Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
File Documents.315 E Hyman Ave.0011-2023-BCOM (36)
Installation and Operation Instructions Document 1464 Installation and Operation Instructions for ommiTHERm® Category II and IV Venting with Laars Linc® • 011 fl 0 Boiler Water Heater s Model OCH1250 Model OCV1250 p G • G 1,250 MBTU/h 1,250 MBTU/h Model OCH 1500 Model OCV1500 1,500 MBTU/h 1,500 MBTU/h Model OCH 1750 Model OCV1750 1,750 MBTU/h 1,750 MBTU/h Model OCH2000 Model OCV2000 2,000 MBTU/h 2,000 MBTU/h Model OCH2500 Model OCV2500 2,500 MBTU/h 2,500 MBTU/h Model OCH3000 Model OCV3000 2000-2500 1750 "iPmmismi. 3,000 MBTU/h 3,000 MBTU/h 3000 1250-1500 FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician, qualified in hot water boiler and heater installation and maintenance. Improper installation and/or operation could create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death. Improper installation and/or operation will void the warranty. A WARNING A AVERTISSEMENT If the information in this manual is not followed Assurez-vous de bien suivres les instructions exactly, a fire or explosion may result causing donnees dans cette notice pour reduire au minimum property damage, personal injury or loss of life. le risque d'incendie ou d'explosion ou pour eviter tout dommage materiel,toute blessure ou la mort. Do not store or use gasoline or other flammable Ne pas entreposer ni utiliser d'essence ni d'autres vapors and liquids in the vicinity of this or any vapeurs ou liquides inflammables dans le voisinage de other unit. cet appareil ou de tout autre appareil. WHAT TO DO IF YOU SMELL GAS QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ: • Do not try to light any unit. • Ne pas tenter d'allumer d'appareils. • Do not touch any electrical switch; do not use • Ne touchez a aucun interrupteur.Ne pas vous servir des any phone in your building. telephones dansle batimentou vous etes. • Immediately call your gas supplier from a • Appelez immediatement votre fournisseur de gaz depuis un voisin. Suivez les instructions du fournisseur. nearby phone. Follow the gas supplier's • Si vous ne pouvez rejoindre le fournisseur de gaz, instructions. appelez le service des incendies. • If you cannot reach your gas supplier, call the L'installation et l'entretien doivent etre assures par un fire department. installateur ou un service d'entretien qualifie ou par le Installation and service must be performed by fournisseur de gaz. a qualified installer,service agency,or gas supplier. LAARI* RECEIVED co = Heating Systems Company 0 8/2 5/2 0 2 3 A subsidiary of BRADFORD WH/TE'Corporation ASPEN BUILDING DEPARTMENT LAARS Heating Systems Table of Contents SECTION 1 General Information 1.A Introduction 5 5.A.2 Cold Water Make-Up 27 1.B Warranty 5 5.A.3 Freeze Protection 27 1.0 Model Identification 5 5.A.4 Suggested Boiler Piping Schematics...28-30 1.D Safety Notes 6 5.B Water Heaters 31 1.E Unit Dimensions and Components 8 5.B.1 Water Quality 31 1.E.1 Model 1250/ 1500 8 5.B.2 Heater Water Connections 31 1.E.2 Model 1750 10 5.B.3 Cold Water Make-Up 31 1.E.3 Models 2000/2500 12 5.B.4 Freeze Protection 31 1.F Unpacking 14 5.B.5 Suggested Piping Schematics 31 1.G Locating the Unit 14 1.H Clearances 14 SECTION 6 Condensate Drain Trap 33 SECTION 2 Venting and Combustion Air SECTION 7 Electrical Connections 2.A General Venting Info 15 7.A Installation Warnings 33 2.A.1 Vent and Air Pipe Sizing 15 7.B Main Power Connections 34 2.A.1.a Category II Vent 16 7.0 Main Power Data 34 2.A.1.b Category IV Vent 16 7.D Control Panel Layout 35 2.A.2 Vent and Air Pipe Material 16 7.E Field Connections 35 2.A.3 Exhaust Vent Terminal 17 7.E.1 Power 36 2.A.4 Air for Combustion and Ventilation 17 7.E.2 Boiler Pump 36 2.A.4.a Combustion Air From Room 17 7.E.3 Dry Contacts 36 2.A.4.b Ducted Combustion Air 17 7.E.4 Alarm Bell 36 2.B Common Venting 18 7.E.5 Sensors 36 2.B.1 Common Venting 18 7.E.6 Heat Demands 37 2.B.2 Removing a Boiler From an 7.E.7 Spare Inputs 37 Existing Common Vent System 18 7.E.8 Inputs, BMS 37 2.0 Locating Vent& Combustion 7.E.9 Outputs, Pump 37 Air Terminals 19 7.E.10 Dry Contacts (Run &Alarm) 37 2.C.1 Side Wall Vent Terminal 19 7.E.11 RS 485 for Cascade (Lead Lag) 37 2.C.2 Side-wall Combustion Air Terminal 20 7.E.12 RS485 BMS 37 2.C.3 Vertical Vent Terminal 20 7.F Modbus/BACnet Memory Map 39-41 2.C.4 Vertical Combustion Air Terminal 20 7.G Wiring Diagrams, High Voltage 42 2.D Outdoor Installation 22 7.H Ladder Diagrams 47-53 2.E Installations in the 7.1 Wiring Diagram 54 Commonwealth of Massachusetts 23 SECTION 3 Gas supply and Piping SECTION 8 Control Operation 3.A Gas Supply and Piping 23 8.A The Home Screen 56 3.B Gas Pipe Sizing 24 8.A.1 Home Screen Active Icons 56 8.A.2 Keypad Operations 57 SECTION 4 Water Flow and Headloss Data 8.B Login to Lock/ Unlock the Disp Screen 58 4.A General Water Flow Information 24 8.0 Quick Start 59 4.B Boiler Water Flow & Headloss Data 25 8.C.1 CH (Central Heat) 59 4.0 Water Heater Flow and Headloss Data....25 8.C.1.a CH1 (Central Heat, One) 1 60 4.D Recovery Data 26 8.C.1.b CH2 (Central Heat, Two) 2 60 8.C.2 DHW (Domestic Hot Water) ��► �. SECTION 5 Piping 8.C.3 Outdoor Reset �e. 1 • , . - VED 5.A Boiler Water Piping 27 8.C.4 Warm Weather Shut Down 61 5.A.1 Boiler Water Connections 27 8.C.5 Anti-Short Cycle 08/2W2023 j 8.C.6 Time & Date ASPEN BUILDING DEPARTMENT The OMNITHERM SECTION 8 (continued) SECTION 9 Gas Valve Touchscreen, 8.D Configuration 63 Menus and Descriptions 8.D.1 CH (Central Heat) 63 9.A About the Gas Valve 95 8.D.1.a CH1 (Central Heat, One) 64 9.B Menu Structure (Example) 96 8.D.1.a.1 PID Low 65 9.0 Gas Valve Display Navigation and Menus 96 8.D.1.a.2 PID High 65 9.D Fuel Air Ratio & Ignition, Menus 98 8.D.1.b CH2 (Central Heat, Two) 65 9.D.1 OEM 99 8.D.2 DHW (Domestic Hot Water) 66 9.D.2 Ignition Menu 100 8.D.3 Outdoor Reset 67 9.D.3 Base Curve Menu 101 8.D.4 Cascade (All about Lead/Lag) 68 9.D.4 Correction Curve Menu 101 8.D.4.a Cascade Parameters 73 9.D.5 Summary Menu 104 8.D.4.a.1 Base/ Drop Load 74 9.D.6 Load & Save Menu 104 8.D.4.b Rotation 74 9.E Diagnostics 104 8.D.4.b.1 Rotation Setup 74 9.F Verification Menu 104 8.D.4.c Redundancy 75 9.G Gas Valve Password & Login Menu 106 8.D.5 Pumps 76 8.D.5.a Vari-Prime 77 SECTION 10 Parameter Tables 107 8.D.6 Manual Firing Rate 78 8.D.6 Temp Limits 78 SECTION 11 Initial startup Instructions 8.D.7.a Delta T Parameters 79 11.A Filling the Boiler System 111 8.D.7.b Flue Limitation Parameters 79 11.B Initial Operation 112 8.D.7.c Outlet Limitation Parameters 79 11.B.1 Initial Burner Operation 112 8.D.8 External 80 11.0 Shutting Down the Unit 112 8.D.8.a External — Remote Set Point 81 11.D Restarting the Unit 112 8.D.8.b External Firing Rate 81 11.E Combustion setup 113 8.D.9 Time & Date 82 11.E.1 Firing Rate for Boiler 113 8.D.10 Miscellaneous Features 82 11.E.2 Combustion at the Gas Valve Display.... 114 8.D.10.a Demands Priorities 83 8.D.10.b Anti-Short Cycle 83 8.D.10.c Warm Weather 84 SECTION 12 Maintenance 8.D.10.d COM Port, BMS 85 12.A System Maintenance 115 8.D.10.e Temperature Conversion 86 12.B Maintenance Notes 115 8.D.10.f Anti-Frost 86 12.B.1 Burner 115 8.D.11 Login 87 12.B.2 Gas Valve/Venturi 115 8.E Service Screens 88 12.B.3 Main OmniTherm Controller 116 8.E.1 Burner(Enable/Disable 88 12.B.4 Valve Control / Display 116 8.E.2 Digital I/O Inputs 89 12.B.5 Spark& Flame Sensors Electrodes 116 8.E.2.a Digital Outputs 89 12.B.6 Blower 116 8.E.3 Analog I/O 90 12.B.7 Heat Exchanger Tubes 116 8.E.4 Screen Settings Timeout 91 12.B.8 Gas Pressure Switches 116 8.E.5 History 91 8.E.6 Restart Touchscreen & Recalibrate 92 SECTION 13 Troubleshooting 8.E.7 Factory Reset 92 13.A Error Codes 118 8.E.8 HMI Model OEM only 92 8.E.9 BIC Model OEM only 92 SECTION 14 Replacement Parts 8.E.10 Both Models. OEM only. 92 14.A General Information 122 8.E.11 About the Firmware of the touchscreen. ..92 14.B Component Illustrations, Parts Lists, 8.E.12 Dev Fan 92 and Part Numbers 122-140 8.E.13 Fan Settings 92 8.F Messages and USB 93 RE,, IVE 8.F.1 Messages 93 8.F.2 USB Functionality 93 08/25/2023 8.G Active Demands 94 11 ASPEN BUILDING DEPARTMENT LAARS Heating Systems OMNITHERM il , II 1 II - ® C - m m 3000 2000&2500 1750 1250& 1500 U` U '-ei awls* Heating Systems Company A subsidiary of BRADFORD WHITE"Corporation RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 5 SECTION 1 General Information 1.A Introduction 1.6 Warranty This manual provides information necessary for the LAARS Heating Systems OmniTherm appliances are installation, operation, and maintenance of LAARS covered by a limited warranty. The owner should complete Heating Systems OmniTherm appliances. Read it the warranty registration at www.Laars.com. carefully before starting the installation. All warranty claims must be made to an authorized All application and installation procedures should LAARS Heating Systems representative. Claims must be reviewed completely before proceeding with the include the serial number and model (this information installation. Consult the LAARS Heating Systems factory, can be found on the rating plate), installation date, and or local factory representative, with any problems or name of the installer. Shipping costs are not included in questions regarding this equipment. Experience has the warranty coverage. shown that most operating problems are caused by improper installation. OmniTherm is protected against over pressurization.A pressure relief valve is included with each OmniTherm. Some OmniTherms may require that the PRV be 1.0 Model Identification installed prior to filling the system. Refer to Figures 4-7 Consult the rating plate on the unit. The following for PRV locations. information describes the model number structure. 1 2 3 4 5 6 7 8 9 10 11 12 13 1-11-1 1-1 nn Series Size/MBH Fuel Construction Electrical System Revision OC-OmniTherm 1 2 5 0 N-Nat X-Standard A-120V,single phase(1250-2000) 1-First Cat II&IV 1 5 0 0 J-CSD-1 B-220/240V,single ph(1500-2500) 1 7 5 0 C-208V,single phase(1500-2500) Usage 2 0 0 0 D-208V,three phase(2500-3000) H-Hydronic 2 5 0 0 E-480V,three phase(2500-3000) V-Volume Water 3 0 0 0 F-600V,three phase(2500-3000) Waterway Options X-std OCH,75psi PRV,H-Stamp N-OCV w/H-Stamp,30psi PRV Additional Options W-std OCV, 125psi PRV,HLW-Stamp P-OCV w/H-Stamp,50psi PRV X- None H- Gateway LONworks A-30psi PRV R-OCV w/H-Stamp,60psi PRV A- Gateway,BACnet IP &alarm bell B-50psi PRV S-OCV w/H-Stamp,75psi PRV B- Gateway,LONworks J- Gateway LONworks C-60psi PRV T-OCV w/H-Stamp, 125psi PRV C- Alarm bell &high limits D-OCV 75psi PRV U-OCV w/H-Stamp, 150psi PRV D- Auto&manual K- Gateway LONworks E-OCH 125psi PRV 2-Flange kit,OCV H-Stamp,30psi PRV high limits &alarm bell F-150psi PRV 3-Flange kit,OCV H-Stamp,50psi PRV E- Gateway BACnet IP &high limits G-Flange kit&30psi PRV 4-Flange kit,OCV H-Stamp,60psi PRV &alarm bell L- Alarm&high limits H-Flange kit&50psi PRV 5-Flange kit,OCV H-Stamp,75psi PRV F- Gateway BACnet IP J-Flange kit&60psi PRV 6-Flange kit,OCV H-Stamp, 125psi PRV &high limits K-Flange kit&75psi PRV 7-Flange kit,OCV H-Stamp, 150psi PRV G- Gateway BACnet IP L-Flange kit&125psi PRV &alarm bell M-Flange kit&150psi PRV &high limits RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 6 LAARS Heating Systems 1.D Safety Notes Safety Notes are used thoughout this manual to bring attention to the presence of hazards with various risk levels and to offer important information concering the life of this product. There are 3 basic types. 1 A WARNING Indicates an imminently hazardous situation which, if not avoided, can or will result in death or serious injury and can or will result in catastrophic property damage. 2 A CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in moderate injury and/or property damage. 3 NOTE: Indicates instructions that are important to that topic but not related to personal injury or property damage. A WARNING A WARNING • Water temperature over 125°F (52°C) can cause The inlet gas pressure to the unit must not severe burns instantly or death from scalds. exceed 13"W.C. (3.2kPa). • Children, disabled and Li elderly are at highest ■ risk of being scalded. •,'& WARNING • See instruction manualThis unit must be installed in accordance with the before setting temperature HOTS procedures detailed in this manual, or the manufacturers at the unit. ��NI" warranty will be voided.The installation must conform • Feel water before bathing to the requirements of the local jurisdiction having or showering. BURN authority, and, in the United States, to the latest edition • If this unit is used of the National Fuel Gas Code,ANSI Z223.1/NFPA54. to produce water that could scald if too hot, such In Canada,the installation must conform to the latest as domestic hot water use, adjust the outlet control edition of CSA B149.1 Natural Gas and Propane Gas (limit) or use temperature limiting valves to obtain a Installation Code, and/or local codes.Where required maximum water temperature of 125°F (52°C). by the authority having jurisdiction, the installation of these units must conform to the Standard for Controls and Safety Devices for Automatically Fired Boilers, A WARNING ANSI/ASME CSD-1.Any modifications to the boiler, its gas controls, or wiring may void the warranty. If field Fire or Explosion Hazard conditions require modifications, consult the factory Improper configuration can cause fuel buildup and representative before initiating such modifications. explosion. Improper user operation may result in property loss, severe physical injury, or death. Any changes to safety-related configuration A WARNING parameters must only be done by experienced and/or licensed burner/boiler operators and mechanics. Carbon Monoxide Hazard If any odor of gas is detected, or if the gas burner does Improper adjustment of the burners may lead to poor not appear to be functioning in a normal manner, close combustion quality, increasing the amount of carbon the main gas shutoff valve. Do not shut off the power monoxide produced. Excessive carbon monoxide switch. Contact your heating contractor, gas company, levels may lead to personal injury or death. or factory representative. A WARNING NOTE: This unit is protected against hydronic CANCER AND REPRODUCTI " ' ' • ED over-pressurization. A pressure relief valve is included WWW.P65WARNINGS.C 'r� .� with each unit. AS REQUIRED BY THE STA-A 5/2 123 CALIFORNIA PROPOSITION 65. ASPEN BUILDING DEPARTMENT The OMNITHERM Page 7 A WARNING NOTE: All installations must be made in accordance with Electrical Shock Hazard 1)American National Standard Z223.1/NFPA54-Latest Edition"National Fuel Gas Code"or Electrical shock can cause severe injury, death or 2)CSA B149.1 "Natural Gas and Propane Installation property damage. Disconnect the power supply before Code"or in Canada reference the B149.1 latest beginning installation or changing the wiring to prevent edition and with the requirement of the local utility or electrical shock or damage to the equipment. It may be other authorities having jurisdiction. Such applicable necessary to turn off more than one power supply requirements take precedence over the general to disconnect. instructions contained herein.All electrical wiring is to All electrical wiring is to be done in accordance with be done in accordance with the local codes, or in the local codes, or in the absence of local codes,with: 1) absence of local codes,with: 1)The National Electrical The National Electrical Code ANSI/NFPA No. 70-latest Code ANSI/NFPA No. 70-latest Edition, or Edition, or 2)CSA STD. C22.1 "Canadian Electrical Code 2)CSA STD. C22.1 "Canadian Electrical Code-Part -Part 1."This appliance must be electrically grounded in 1".This appliance must be electrically grounded in accordance with these codes. accordance with these codes. A WARNING The Repair Parts list designates parts that contain refractory ceramic fibers(RCF). RCF has been classified as a possible human carcinogen.When exposed to temperatures above 180°F, such as during direct flame contact, RCF changes into crystalline silica, a known carcinogen.When disturbed as a result of servicing or repair,these substances become airborne and, if inhaled, may be hazardous to your health. Do not remove or replace RCF parts or attempt any service or repair work involving RCF without wearing the following protective gear: 1. A National Institute for Occupational Safety and Health (NIOSH)approved respirator. 2. Long sleeved, loose fitting clothing. 3. Gloves. 4. Eye Protection. A CAUTION The supply voltage to this unit must not be disengaged, except for service or isolation, or unless otherwise instructed by procedures outlined in this manual. To signal a call for heat, use the correct terminals as instructed in the Electrical Connections, Field Wiring 7.E on page 35 of this manual. RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 8 LAARS Heating Systems 1.E Unit Dimensions and Components 1.E.1 Model 1250 / 1500 All dimensions are in inches. 21 _ 24.5 26.7 _ _ 24 Electrical j10.3_ 0 6" Connections Air Inlet le U 43. ® 1 ► II it 66 o • • ► 0 •,. 0 2" NPT Gas Conn. 62 58 • • 0 6" 48.4 Vent . • � ) PRV ' r 17.5 '' ' ' Cond .:- ` Trap tJ u' 1 1 1 1 1 5 'u 2 1/2"Outlet 2 1/2" Inlet 39 r6.2� 11.5 _ 17.7 _ Gas Train as viewed from the front of the unit : W •dui -.411.111r-411.11r- ill irttp .. Gas Valve Reset /--T- --,11111- ilk\ IIV 71W 111 i 4 ----' ` -m _. _..-•-".-4..,..-I.R6,.. '--.--.. ,00.; 14,"' ((t,iit - -07,--i l' . (r -- \ * /)- Eik i ---.... - _...,...4 Iri 1 ,.... „ ,, , ,,, , , 1, ,i. Sight 1 ® ®•.® ' - �, Glass Ci- 111,, orile " x.----.0" ei ili i li „.„,41-, L---- gill 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 9 Blower Gas Valve "" System Controls pi Touchscreen rir ,''• • i-i,' 4, ✓" :"a.✓et, ,r:_ F.: 7- f e r% Gas Valve Touchscreen '` 1 toraga - Control n Panel s Heat Exchanger ' f- r� am; L r _ di .. i • . i ' - 'mow 'f Power Pack f aa cRs1_ Power ,.,,,..,i Connections Conduit Manual gas valve it _. ► = I 1!-/J <. • Air Filter Box ; ,I 111- , .,. oi, Y :`77 Power 1 I• Connections ASK • 0 I-I i ;1 :::ensate Ii ( _, '-il.� Trap r1 ' 4_ " Water Inlet RECEIVED ___ 4,,,, c. Water outlet 08/25/2023 ASPEN BUILDING DEPARTMENT Page 10 LAARS Heating Systems 1.E.2 Model 1750 All dimensions are in inches. 32.0 31 .6 431.1 Electrical f 20.2 i Connection • ° 08" NPT I a I II- t PRV -cy—Air Inlet • • 69PI1 .202" NPT tGas Inlet �� 55.6 -44 1 29 65 0 8" 16 ,r Vent it ! 44 Cond. 22.7 -i Trap II.� 4.14, . 4 -- t1 l� - - - - - 8.0 . I� 53 3" Outlet 3" Inlet 5.7f 20.1 i Gas Train as viewed from the front of the unit - Gas Valve Reset — k 1.0) '--- opOsuimersiii-a4--4-1 . i.... I- illir P , '; b JJ --li 1 Sight 7 "77----- 10R- -- 1 Glass o I RECEIVED Note: The gas train layout is the same for Models 1750 up to 3000 with only the 0 8/2 5/2 0 2 3 size of the components increasing to suit the increased size of that model. ASPEN BUILDING DEPARTMENT Page 11 The OMNITHERM Blower Gas Valve 1 i•-- =:` System Controls __ •" .� "— ;, Touchscreen ram. `� I I � 'J/ '1 alma Ilk - ,.7, ..-, Gas Valve r , - _ --,-0" /E"' Touchscreen • • _ `i* (Behind Top Panel) I:. . I 14k 4` Control k`*: ' g0�1 Panel - 0 { „ E. • Manual -�, _` _ _ i,clit _ gas valve ,,, iiik 1 i '''i.:6-.''''-- ,-.;-..T. -____-,----A. ( Power I I Pack Power __ _- Connections Conduit Manual Gas Valve '— Power III i Connections «�- E i41111111- ' Air Filter Box • a - ��, �r ci ; Gas Inlet e f ..00: •IU ! P RV 1 •r II "J Heat Exchanger f r . ttj Vent (1 .:"."--•;&__ ._ I n_T_ C;,-„,„„..- Aid, Condensate f �" ' -' ( 'tC0 Trap O w, a L Water Inlet RECEIVED ----_ 08/25/2023 Water Outlet ASPEN BUILDING DEPARTMENT Page 12 LAARS Heating Systems 1.E.3 Models 2000 / 2500 and 3000 All dimensions are in inches. 32.0 h 42.8 ELECTRICAL - 20.2 " CONNECTIONS .5 8 f 080 AIR INLET , r , r 3000 1 2000 &2500 �- PRV0/7. 2"NPT GAS PI o • mu - e.s 65.8 60 71.5 85 65.6 78 010" 08" 60 VENT 60.2 ii 1 • ' 54.3 / • • \s COND 22.7 TRAP • — — — — — • 8.0 t —..-5.7f 1.8 53 f 20.1 03"WATER INLET GROOVE LOCK OR FLANGE Gas Train as viewed from the front of the unit Gas Valve Reset Nilieemti"."1"..rou 0,1 I r) Ai V -- --11- 141121'--=--- "Itita• I LIV11?...:s' k ly. 1 ril - „1:ne5t., , ,...._ 4 L ____. ��� i �� �-__,�; Sight 6 1, Glass _,...__, 1_ . ,,, _________ _________ 0 I RECEIVED Note: The gas train layout is the same for Models 1750 up to 3000 with only the 0 8/2 5/2 0 2 3 size of the components increasing to suit the increased size of that model. ASPEN BUILDING DEPARTMENT The OMNITHERM Page 13 Blower ---------,-,,- ____)LE L,rsigil--.1*11 w` Gas Valve i / r / i�r/ Gas Valve A W t Touchscreen Note: The Model 3000 is 7 taller iu 0 w than the Model 2000 and '4.0 System Controls Model 2500 �, - - /j Touchscreen 3000 Control ' O$1Panel �I 2000/2500 zt ii r 0 �- r Heat - i --__ Exchanger L,,. Power61110., 1 ,. '�1 Pack cD �y-r_ � "" r I I Power Connections Manual gas valve Conduit Power _ �._• /1 Connections f «' ice+ � ✓ Air Filter Box ROA -"1";0 ( .1r if _��li .00* 1 ig ig Gas Inlet ',' 4 :i a--rya _ ( ✓�I i K -� �I PRV i I Q C� Vent. , , ,� I Bp o 1, T, . . �� Condensate r '� '1s Trap LPie of o .1, . 4.:-..., Wita - ' ,' - P,--,T %i Water Inlet RECEIVED 08/25/2023 Water Outlet ASPEN BUILDING DEPARTMENT Page 14 LAARS Heating Systems 1.F Unpacking This unit is shipped in a single crate. Carefully The unit should not be located in an area where leakage disassemble the crate and inspect the unit for any of any connections will result in damage to the area damage during shipping. Included in the crate and yet adjacent to the unit, or to lower floors of the structure. outside of the unit is the `Installation Kit' box. When this type of location is not available, install a Inspect the contents of the the Installation Kit box, making suitable drain pan, adequately drained, under the unit. sure that all parts are included and not damaged. This unit is design-certified by CSA-International for 1. Installation Instructions for Sensors (3) installation on combustible flooring; in basements; in utility rooms, alcoves, or closets. Boilers must never be 2. Box containing Outdoor Sensor installed on carpeting. The location for the unit should 3. Box containing System Sensor be chosen with regard to the vent pipe lengths and 4. Tank Sensor external plumbing. 5. Spring Clip(used to hold tank sensor in sensor well) The unit shall be installed such that the gas ignition system components are protected from water(dripping, 6. Nylon Bushing spraying, rain, etc.)during operation and service(circulator 7. Cable Tie replacement, control replacement, etc.). NOTE: A condensate neutralizer is NOT included. When vented vertically, the unit must be located as close as practical to the vertical section of the vent. If the vent terminal and/or combustion air terminal terminate through 1.G Locating the Unit a wall, and there is potential for snow accumulation in the local area, both terminals should be installed at an appropriate level above grade or the maximum expected This unit may be installed indoors or outdoors. If snow line. installing outdoors in a location that may experience The dimensions and requirements that are shown in freezing temperatures, precautions must be taken to Table 1 should be met when choosing the location for the prevent water in the heat exchanger and condensate unit. inside and outside of the boiler from freezing. For units installed outdoors, the minimum outdoor operating Ensure the location takes into account the maximum temperature is 5°F (-15°C).Damage due to freezing water allowable vent length shown in SECTION 2 of this or condensate is not covered by the warranty. manual. Choose a location for the unit which allows clearances on NOTE : The unit shall be installed such that the gas all sides for maintenance and inspection. See Table 1. ignition system components are protected from water Always install the unit on a firm, level surface. It is dri spraying, rain, etc.)duringoperation and recommended that the unit is installed on a raised 4" pad (dripping,g' pra y g' service (circulator replacement, control so that there is elevation for a condensate neutralizer kit (not included with unit). replacement, etc.). 1.H Clearances Certified Clearances to Combustibles Model Front Back Left Right Top inches cm inches cm inches cm inches cm inches cm 1250-3000 closet* - 0 0 0 0 0 0 0 0 *With required openings Suggested Service Clearances Model Front Back Left Right Top inches cm inches cm inches cm inches cm inches cm 1250-1500 24 61 24 61 8 20 8 20 18 46 '! 1750-3000 24 61 24 61 8 20 8 20 17 43 Table 1. Clearances 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 15 SECTION 2 Venting and Combustion Air 2.A General Venting Info A WARNING A ADVERTISSEMENT All venting must be installed according to this manual Tous les events doivent etre installes conformement a ce and any other applicable local codes, including but not manuel et a tout autre code local applicable,y compris, limited to,ANSI Z223.1/NFPA 54, CSA B149.1, CSA mais sans s'y limiter,ANSI Z223.1 /NFPA 54, CSA B149.2 and ULC S636. Failure to follow this manual B149.1, CSAB149.2 et ULC S636. Le non-respect de and applicable codes may lead to property damage, ce manuel et des codes applicables peut entrainer des severe injury or death. dommages materiels, des blessures graves ou la mort. A WARNING A ADVERTISSEMENT For indoor installations, as an additional measure Pour les installations interieures,comme mesure de securite of safety, Laars strongly recommends installation of supplementaire,Laars recommande fortement l'installation de suitable Carbon Monoxide detectors in the vicinity of detecteurs de monoxyde de carbone appropries a proximite this appliance and in any adjacent occupied spaces. de cet appareil et dans tout espace occupe adjacent. This unit is certified to vent as a Category II (negative pressure condensing)or Category IV(positive pressure condensing) appliance. The vent can terminate through the roof, or through an outside wall. All vent systems which discharge horizontally(without the use of a power venter)are considered Category IV vent systems. All installations must be done following the vent supplier's recommended installation techniques. If these are not available, refer to the Manufacturer recommendations for the material used. Route the vent pipe to the heater as directly as possible. Seal all joints and provide adequate hangers as required in the venting system manufacturer's installation instructions. Horizontal portions of the venting system must be supported to prevent sagging and may not have any low sections that could trap condensate. The unit must not support the weight of the vent pipe. Horizontal runs must slope downwards not less than '/4 inch per foot(2 cm/m)from the unit to the vent terminal. Up to 100 equivalent feet of vent can be used. For each elbow subtract 5 ft of vent length from the total allowable length of vent pipe. 2.A.1 Vent and Air Pipe Sizing Maximum Category IV Maximum Typical** Air Collar Ducted Air Vent Collar Category IV Category II Model Size Pipe Size Ducted Air Pipe Size Vent Pipe Vent Pipe Vent Pipe Length Size Length Size inches cm inches cm ft* m inches cm inches cm ft* m inches cm 1250 6 15 6 15 100 30.5 6 15 6 15 100 30.5 12 30 1500 6 15 6 15 100 30.5 6 15 6 15 100 30.5 12 30 1750 8 20 8 20 100 30.5 8 20 8 20 100 30.5 14 36 2000 8 20 8 20 100 30.5 8 20 8 20 100 30.5 14 36 2500 8 20 8 20 100 30.5 8 20 8 20 100 30.5 16 41 3000 10 25 10 25 100 30.5 10 25 10 25 100 30.5 18 46 *Equivalent Feet:To calculate, measure the linear feet of the pipe and add 5 ft(1.5m)for each elbow used. **Category II vent pipe size must be engineered for vent system configuration, and may differ from what is shown. Notes: 1. Installations in the U.S. require exhaust vent pipe that is stainless steel complying with UL1738. RECEIVED 2. Intake air pipe may be single-wall galvanized steel pipe, polypropylene,ABS, PVC, or CPVC, properly sealed. Table 2: Vent/Air Pipe Sizes 08/25/2023 ASPEN BUILDING DEPARTMENT Page 16 LAARS Heating Systems 2.A.1.a Category II Vent Non-positive pressure vent systems are generally vertically-terminated. Table 2 gives guidelines for vent and air pipe sizes, but the draft must be measured to ensure that it remains between -0.001"w.c. and -0.10"w.c. at all firing rates. The vent system must be sealed stainless steel. 2.A.1.b Category IV Vent Positive pressure vent systems may be either horizontally or vertically vented. The vent system must be sealed stainless steel. Recommended manufacturers and Category IV component part numbers are shown in Table 3. Manufacturer Model Numbers (abbreviated) Selkirk Duravent NovaFlex Component Safe-T Vent EZ Seal FasNSeal Z Flex 90° Elbow 9x14 FSELB90xx 2SVEExx90 Pipe 9x07 FSVLxxxx 2SVEPxxxx Horizontal Air Inlet 9xTERM FSAIHxx 2SVSTEXxx90 Vertical Termination 5x00CI FSRCx 25VSRCxx Boiler Adapter 5x01 BOI FSAAUx 25VSAxx Table 3: Component Examples 2.A.2 Vent and Air Pipe Material A WARNING Failure to use the appropriate vent material, installation techniques, or glues and sealants could lead to vent failure causing property damage, personal injury, or death. This unit requires a special venting system. See tables 4 and 5 for a list of allowable exhaust vent and combustion air pipe materials. Refer to venting supplier's instructions for complete parts list and method of installation. The manufacturers and product lines listed in Table 3 have been tested and authorized to safely operate with this equipment. Suppliers of stainless steel that are not listed on these tables are not permitted for use with this appliance. Do not mix venting suppliers and models in venting systems. Failure to comply could result in personal injury, property damage, or death. Installations must comply with applicable national, state and local codes. Material United States Canada Stainless Steel UL 1738 The vent pipe material must be chosen based upon the intended application of the boiler or water heater and must be installed according to the vent manufacturer's installation instructions. Table 4: Required Exhaust Vent Material Material United States Canada ABS ANSI /ASTM D1527 The air pipe material must be chosen PVC, sch. 40 ANSI /ASTM D1785 or D2665 based upon the intended application of the boiler or water heater and must CPVC, sch. 40 ANSI/ASTM F441 _ be installed according t Single wall galv. Steel 26 gauge manufacturer's installati i tiEIvE® Polypropylene ULC S636 Class 2C 08/25/2323 Table 5: Required Combustion Air Pipe Material ASPEN BUILDING DEPARTMENT The OMNITHERM Page 17 2.A.3 Exhaust Vent Terminal An exhaust vent terminal must be installed. If an exhaust vent terminal is not available with the certified vent system, the manufacturer suggests the use of a coupler fitting from the certified vent system into which the vent terminal screen can be installed. Laars offers vent terminals, shown in Table 6. Be sure to locate both vent and combustion air terminals per the instructions in section 2.0 Locating Vent&Combustion Air Terminals. Size Laars Part Number Exhaust Vent Inlet Air 1250 D2012004 CA011904 1500 1750 D2012001 CA011901 2000 2500 3000 D2012002 CA011902 Table 6: Horizontal Vent and Air Terminations 2.A.4 Air for Combustion and Ventilation Method 2: One permanent opening, commencing within 12 inches (30 cm)of the top of the enclosure, shall Boilers and water heaters must have provisions for be permitted. The opening shall directly communicate combustion and ventilation air in accordance with Section with the outdoors or shall communicate through a vertical 9.3,Air for Combustion and Ventilation, of the National or horizontal duct to the outdoors or spaces that directly Fuel Gas code,ANSI Z223.1, or Sections 7.2, 7.3, or communicate with the outdoors and shall have a minimum 7.4 of CSA B149.1, Installation Codes, or applicable free area of 1 square inch per 3000 Btu/hr(7 square cm/ provisions of the local building codes. kW)of the total input rating of all equipment located in the The unit may receive combustion air from the space in enclosure. This opening must not be less than the sum of which it is installed, or it can be ducted directly to the the areas of all vent connectors in the confined space. unit from the outside. Ventilation air must be provided in Other methods of introducing combustion and ventilation either case. air are acceptable, providing they conform to the 2.A.4.a Combustion Air From Room requirements in the applicable codes listed above. In Canada, consult local building and safety codes, or, in In the United States, the most common requirements absence of such requirements, follow CSA B149.1. specify that the space shall communicate with the outdoors in accordance with method 1 or 2,which follow. 2.A.4.b Ducted Combustion Air Where ducts are used, they shall be of the same cross- sectional area as the free area of the openings to which The combustion air can be taken through the wall, or they connect. through the roof. When taken from the wall, it must be taken from out-of-doors by means of the Laars horizontal Method 1: Two permanent openings, one commencing wall terminal. When taken from the roof, a field-supplied within 12 inches (30 cm)of the top and one commencing rain cap or an elbow arrangement must be used to within 12 inches (30 cm)of the bottom, of the enclosure prevent entry of rain water(see Figure 3). shall be provided. The openings shall communicate Use pipe of the appropriate size and material (see directly, or by ducts, with the outdoors or spaces sections 2.A.1 and 2.A.2), for the combustion air intake. that freely communicate with the outdoors. When Route the intake to the heater as directly as possible. directly communicating with the outdoors, or when Seal all joints with tape. Provide adequate hangers. The communicating to the outdoors through vertical ducts, unit must not support the weight of the combustion air each opening shall have a minimum free area of 1 intake pipe. Maximum linear pipe length allowed is 100 square inch per 4000 Btu/hr(5.5 square cm/kW) of total feet(30.4m). subtract 5 allowable linear feet(1.5m)for input rating of all equipment in the enclosure. When every additional elbow used. communicating with the outdoors through horizontal In addition to air needed for combustion, aj l�/ qww, it ducts, each opening shall have a minimum free area of be supplied for ventilation, including all air' $quir ',t; `' /l not less than 1 square inch per 2000 Btu/hr(11 square comfort and proper working conditions for personnel. cm/kW)of total input rating of all equipment in the The unit loses less than 1 percent of its inpuOrgtit2S)2 023 enclosure. room, but other heat sources may be present. ASPEN BUILDING DEPARTMENT Page 18 LAARS Heating Systems 2.B Common Venting Refer to the installation and operating instructions on A WARNING all appliances to be common vented for instructions, warnings, restrictions and safety requirements. If safe Operation of appliances with a blocked common vent operations of all appliances connected to a common may lead to serious injury or death. Safety devices vent cannot be assured, including prevention of spillage must be implemented to prevent blocked common vent of flue gasses into living spaces, common venting should operation. If safe operation of all appliances connected not be applied, and appliances should each be vented to a common vent cannot be assured, including separately. prevention of spillage of flue gasses into living spaces, common venting should not be applied, and appliances 2.B.2 Removing a Boiler From an Existing should each be vented separately. Common Vent System A ADVERTISSEMENT NOTE: This section does not describe a method for Le fonctionnement des appareils avec un event common venting this unit. It describes what must commun bloque peut entrainer des blessures graves be done when a unit is removed from a common ou la mort. Des dispositifs de securite doivent etre mis vent system. Contact the factory or your factory en place pour empecher le fonctionnement de ('event representative if you have questions about common commun bloque. Si le fonctionnement en toute securite venting this unit. de tous les appareils connectes a un event commun ne peut etre assure, y compris la prevention du When an existing boiler is removed from a common deversement de gaz de combustion dans les espaces venting system, the common venting system is likely de vie, une ventilation commune ne doit pas etre to be too large for proper venting of the appliances appliquee et les appareils doivent chacun etre ventiles remaining connected to it. separement. At the time of removal of an existing boiler, the following steps shall be followed with each appliance remaining 2.B.1 Common Venting connected to the common venting system placed in operation, while the other appliances remaining This unit can be common vented; however, the common connected to the common venting system are not in venting must be a professionally designed and approved operation. system. When common venting a fan-assisted unit with other appliances through one shared vertical duct 1. Seal any unused openings in the common venting called a "common vent", special care must be taken by system. the installer to ensure safe operation. In the event that 2. Visually inspect the venting system for proper the common vent is blocked, it is possible, especially size and horizontal pitch and determine there is for fan-assisted devices, to vent backwards through no blockage or restriction, leakage, corrosion and non-operating appliances sharing the vent, allowing other deficiencies which could cause an unsafe combustion products to infiltrate occupied spaces. If the condition. appliances are allowed to operate in this condition, 3. Insofar as it is practical, close all building doors serious injury or death may occur. and windows and all doors between the space in It is for this reason that, in addition to following proper which the appliances remaining connected to the vent sizing, construction and safety requirements from common venting system are located and other the National Fuel Gas Code,ANSI Z223.1 or in Canada, spaces of the building. Turn on clothes dryers from CSA B149.1 as well as all applicable local codes, it and any appliance not connected to the common is required that installers provide some means to prevent venting system. Turn on any exhaust fans, such operation with a blocked common vent. It is suggested as range hoods and bathroom exhausts, so they that a blocked vent safety system be employed such that will operate at maximum speed. Do not operate a all appliances attached to the vent be locked out and summer exhaust fan. Close fireplace dampers. prevented from operating under blockage conditions. 4. Place in operation the appliance being inspected. As an additional precaution, it is recommended that a Follow the lighting instructions.Adjust thermostat Carbon Monoxide (CO) alarm be installed in all enclosed so appliance will operate continuously. spaces containing combustion appliances. If assistance 5. Test for spillage at the draft hood reli is required in determining how a blocked vent safety after 5 minutes of main burner oper ivE system should be connected to a LAARS product, please the flame of a match or candle, or smo e from a call Application Engineering at the Rochester phone cigarette, cigar or pipe. number listed on back cover of this manual. 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 19 6. After it has been determined that each appliance systeme d'evacuation est mis a I'air libre de fagon remaining connected to the common venting adequate. Remettre les portes et les fenetres, les system properly vents when tested as outlined ventilateurs, les registres de cheminees et les appareils above, return doors, windows, exhaust fans, au gaz a leur position originate. fireplace dampers and any other gas burning 7. Tout mauvais fonctionnement du systeme d'evacuation appliance to their previous conditions of use. commun devrait etre corrige de fagon que/'installation 7. Any improper operation of the common venting soit con forme au National Fuel Gas Code,ANSI Z223.1/NFPA 54 et(ou) aux codes d'installation system should be corrected so that the installation CSA-B149.1. Si la grosseur d'une section du systeme conforms to the National Fuel Gas Code,ANSI devrait etre modifie, le systeme devrait etre modifie Z223.1/NFPA 54 and/or CSA B149.1, Installation pour respecter les valeurs minimales des tableaux Codes. When resizing any portion of the common pertinents de 1'appendice F du National Fuel Gas Code, venting system, the common venting system ANSI Z223.1/NFPA 54 et(ou)les codes d'installation should be resized to approach the minimum size as CSA-B149.1 determined using the appropriate tables in Part II of the National Fuel Gas Code,ANSI Z223.1/NFPA 54 2.0 Locating Vent & Combustion Air and/or CSA B149.1, Installation Codes. Terminals 2.B.2 Verification des events communs— 2.C.1 Side Wall Vent Terminal Chaudieres An appropriate quality side wall vent terminal must be Lorsqu'une chaudiere existante est deconnectee du reseau used. d'events commun, ce reseau d'events commun devient probablement trop grand pour les appareils qui lui restent The terminal provides a means of installing the vent connectes. Lorsqu'une chaudiere existante est retiree, les piping through the building wall and must be located in stapes suivantes doivent etre accomplies pour chaque accordance with ANSI Z223.1/NFPA 54 and applicable appareil qui reste connects au reseau d'events commun local codes. In Canada, the installation must be in utilise, alors que les autres appareils qui sont encore accordance with CSA B149.1 or.2 and local applicable connectes au reseau commun d'events ne sont pas en codes. Consider the following when installing the fonctionnement.: terminal: 1. Sceller toutes les ouvertures non utilisees du systeme 1. Figure 2 shows the requirements for mechanical d'evacuation. vent terminal clearances for the U.S. and Canada. 2. lnspecter de fagon visuelle le systeme d'evacuation pour determiner la grosseur et 1'inclinaison horizontals 2. Vent terminals for condensing appliances or qui conviennent et s'assurer que/e systeme est exempt appliances with condensing vents are not permitted d'obstruction, d'etranglement, de fuite, de corrosion to terminate above a public walkway, or over an area et autres defaillances qui pourraient presenter des where condensate or vapor could create a nuisance risques. or hazard. 3. Dans la mesure du possible, fermer toutes les 3. Locate the vent terminal so that vent gases cannot portes et les fenetres du batiment et toutes les be drawn into air condition system inlets. portes entre 1'espace ou les appareils toujours 4. Locate the vent terminal so that vent gases cannot raccordes au systeme d'evacuation sont installes et les autres espaces du batiment. Mettre en marche enter the building through doors, windows, gravity les secheuses, tous les appareils non raccordes au inlets or other openings. Whenever possible, systeme d'evacuation common et tous les ventilateurs locations under windows or near doors should be d'extraction comme les hottes de cuisiniere et les avoided. ventilateurs des sal/es de bain. S'assurer que ces 5. Locate the vent terminal so that it cannot be blocked ventilateurs fonctionnent a la vitesse maximale. Ne by snow. The installer may determine that a vent pas faire fonctionner les ventilateurs d'ete. Fermer les terminal must be higher than the minimum shown in registres des cheminees. codes, depending upon local conditions. 4. Mettre/'appareil inspects en marche. Suivre les instructions d'allumage. Reegler le thermostat de fagon 6. Locate the terminal so the vent exhaust does not continue. settle on building surfaces or other nearby objects. 5. Faire fonctionner le bruleur principal pendant 5 min Vent products may damage such surfaces or objects. ensuite, determiner si le coupe-tirage deborde a 7. If the boiler or water heater uses ducted combustion 1'ouverture de decharge. Utiliser la flamme d'une air from an intake terminal located o; , s r'i I (i) allumette ou d'une chandelle ou la fumes dune wall, locate the vent terminal at least (2 'mil cigarette, d'un cigare ou d'une pipe. horizontally from the combustion air ter I 6. Une fois qu'il a ete determine, selon la methode locate the vent terminal at least 1 foot( 1} /v3 02 3 indiquee ci-dessus, que chaque appareil raccorde au the combustion air terminal. ASPEN BUILDING DEPARTMENT Page 20 LAARS Heating Systems *When vent terminal is less than 10 feet(3 m) horizontally from a forced air inlet,the terminal must be at least 3 feet(0.9 m)above the air inlet. (US only) } A �� i g I SDED 0—114 OPERABLE C OSED I M O S F) — �..—J .IB A I— EVENT TERMINAL 0 AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED U.S.Installations(see note 1) Canadian Installations(see note 2) A= Clearance above grade,veranda, porch, 12 inches(30 cm) 12 inches(30 cm) deck,or balcony See note 6 See note 6 B= Clearance to window or door that may be Direct vent only: 12 inches(30 cm); 36 inches(91 cm) opened Other than Direct vent:4 ft(1.2m)below or to side of opening; 1 ft(30 cm)above opening C= Clearance to permanently closed window See note 4 See note 5 D= Vertical clearance to ventilated soffit located above the terminal within a horizontal See note 4 See note 5 distance of 2 feet(61 cm)from the center line of the terminal E= Clearance to unventilated soffit See note 4 See note 5 F= Clearance to outside corner See note 4 See note 5 G= Clearance to inside corner See note 4 See note 5 H= Clearance to each side of center line 3 feet(91 cm)within a height 15 feet extended above meter/regulator assembly See note 4 above the meter/regulator assembly I= Clearance to service regulator vent outlet See note 4 3 feet(91 cm) J= Clearance to non-mechanical air supply Direct vent only:36"(91cm) inlet to building or the combustion air inlet Other than Direct vent:4 ft(1.2m)below 36 inches(91 cm) to any other unit or to side of opening; 1 ft(30 cm)above opening K= Clearance to a mechanical air supply inlet 3 feet(91 cm)above if within 10 feet(3 m) 6 feet(1.83 m) horizontally L= Clearance above paved sidewalk or paved Vent termination not allowed in this location 7 ft(2.1 m) driveway located on public property for category IV units. See note 5 M= Clearance under veranda,porch,deck, See note 4 12 inches(30 cm) or balcony See note 5 Notes: 1. In accordance with the current ANSI Z223.1 /NFPA 54 National Fuel Gas Code. 2. In accordance with the current CAN/CSA-B149 Installation Codes. 3. Permitted only if veranda,porch,deck,or balcony is fully open on a minimum of two sides beneath the floor. 4. For clearances not specified in ANSI Z223.1 /NFPA 54,clearance is in accordance with local installation codes and the requirements of the gas supplier. 5. For clearances not specified in CAN/CSA-B149,clearance is in accordance with local installation codes and the requirements of the gas supplier. 1-1 4 6. IMPORTANT:All terminals must be placed so that they remain a minimum 12"above expected snow line. Local codes may avo ,17 more specific requirements,and must be consulted. 08/25/2023 Figure 1. Combustion Air and Vent Through Side-wall. ASPEN BUILDING DEPARTMENT The OMNITHERM Page 21 1VIaltiple Vents 2"Mn.(Typ) OUTLET 0 0 0 Window Multiple Air Intakes A ►- 2"Mn.(Typ) 12" 30cm 36" 90cm Min. Min. f . 84" 213 cin.m M 1 0 0 0 INI ET T Terminals must be placed such that they are a Minimum of 12"above the 12" Mn.3i Above expected snow line expected snow line. Local codes may have more specific requirements and must be consulted. Refer to the NFPA 54 National Fuel Gas Code and your local codes for all required clearances for venting. Figure 2. Minimum Side-wall Venting Distance for Single and Multiple Units. 2.C.2 Side-wall Combustion Air Terminal Consider the following when installing the terminal. 2.C.4 Vertical Combustion Air Terminal 1. Do not locate the air inlet terminal near a source When combustion air is taken from the roof, afield- of corrosive chemical fumes (e.g., cleaning fluid, supplied rain cap or an elbow arrangement must be used chlorine compounds, etc.). to prevent entry of rain water. The opening on the end of the terminal must be at least 12" (30 cm)above the point 2. Locate the terminal so that it will not be subject to at which it penetrates the roof, and high enough above the damage by accident or vandalism. It must be at leat roof line to prevent blockage from snow. When the vent 7 feet (2.1 m) above a public walkway. terminates on the roof, the combustion air must terminate 3. Locate the combustion air terminal so that it cannot at least 12" (30 cm) below the vent terminal. See Figure 3. be blocked by snow. The National Fuel Gas Code requires that it be at least 12 inches (30 cm) above grade, but the installer may determine it should be higher, depending upon local conditions. 10 ft(3.Om) 10 ft 3.0m) 4. If the unit is side-wall vented to the same wall, use or less 2 ft or ess Figure 2 to determine the proper mounting locations. (0.6m) ' ' 2 ft ± min._ 5. Multiple vent kits should be installed such that the Chimney minimum ---4— ini(o sm> mum 2 ft(0.6m) —4-3 ft horizontal distance between outlet group and inlet (o sm) -minimum (on9n) group is 84" (213 cm). (See Figure 2). min. + 6. The vent outlet must be at least 12" above the top wall or of the air inlet and must be at least 84" (213 cm) 4 Vent parapet horizontally from the air inlet. (See Figure 2). Vent Vent Approved Vent Terminal 2.C.3 Vertical Vent Terminal Rain Alternate Cap Elbow When the unit vented through the roof, the vent must 10 ft(3.1 m)min. 12"(305mm) Termination extend at least 3 feet(0.9 m) above the point at which t°wall +n. 1 it penetrates the roof. It must extend at least 2 feet (0.6 -- 1 1 12"(305mm) I m) higher than any portion of a building within a horizon- min. /- tal distance of 10 feet(3.0 m), and high enough above the roof line to prevent blockage from snow. When the f 3ft I 4 combustion air is taken from the roof, the combustion Exhaust Gases I (0.9m) it combust m7�na ; t t�1 `, air must terminate at least 12" (30 cm) below the vent min. ,` } i terminal. 08/25/ 023 Figure 3. Combustion Air and Vent through Roof ASPEN BUILDING DEPARTMENT Page 22 LAARS Heating Systems 2.D Outdoor Installation 2.E Installations in the Commonwealth of Precautions must be taken to prevent water in the heat Massachusetts exchanger and condensate inside and outside of the In Massachusetts the following items are required if the boiler from freezing. Damage due to freezing water or side-wall exhaust vent termination is less than seven condensate is not covered by the warranty. For units (7)feet above finished grade in the area of the venting, installed outdoors, the minimum outdoor operating including but not limited to decks and porches. (From temperature is 5F (-15C). Massachusetts Rules and regulations 248 CMR 5.08.) For proper operation in outdoor installations, the boiler 1. Installation of Carbon Monoxide Detectors must be equipped with the inlet air and exhaust terminal At the time of installation of the side-wall vented kits listed in Table 7. Additional instructions are supplied gas fueled unit,the installing plumber or gasfitter with the terminal kits. shall observe that a hard wired carbon monoxide detector with an alarm battery back-up is installed on the floor level where the gas unit is to be installed. In addition,the installing plumber or gasfitter shall Size Laars Part Number observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on each Exhaust Vent Inlet Air additional level of the dwelling, building or structure 1250 CA017600 CA017900 served by the side-wall horizontally vented gas fueled equipment. It shall be the responsibility of the property 1500 owner to secure the services of qualified licensed professionals for installation of hard wired carbon 1750 CA017700 CA018000 monoxide detectors. 2000 a. In the event that the side-wall horizontally vented gas fueled equipment is installed in a crawl space or an 2500 attic,the hard wired carbon monoxide with alarm and battery back-up may be installed on the next adjacent 3000 CA017800 CA018100 floor level. Table 7: Outdoor Terminals b. In the event that the requirements of the subdivision cannot be met at the time of completion of installation, the owner shall have a period of thirty(30)days A WARNING to comply with the above requirements, provided, however,that during said thirty(30)day period, a If installing outdoors in a location that may experience battery operated carbon monoxide detector with an freezing temperatures, provisions must be made to alarm be installed. protect the unit from freeze damage. Manufacturer 2. Approved Carbon Monoxide Detectors does not warranty damage caused by freezing Each carbon monoxide detector shall comply with temperatures. The unit must not operate if the outdoor NFPA 720 and be ANSI/UL 2034 listed and IAS temperature drops below 5F (-15C). certified. 3. Signage A metal or plastic identification plate shall be A WARNING permanently mounted to the exterior of the building The outdoor vent terminal gets hot. This unit must be at a minimum height of eight(8)feet above grade installed in such a way as to reduce the risk of burns directly in line with the exhaust vent terminal for from contact with the vent terminal. horizontally vented gas fueled heating unit or equipment.The sign shall read, in print no less than one-half(1/2)inch in size: "GAS VENT DIRECTLY BELOW, KEEP CLEAR OF ALL OBSTRUCTIONS." 4. Inspection The state or local gas inspector of the side-wall horizontally vented gas fueled unit shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors pia . i� installed in accordance with the provisi CMR 5.08(2)(a) 1-4. 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 23 SECTION 3 Gas Supply and Piping 3.A Gas Supply and Piping All Installations must conform to the National Fuel Gas Review the following instructions before proceeding with the Code ANSI Z223.1/NFPA54, and/or local codes. In installation. Canada, the installation must conform to the latest edition 1. Verify that the unit is fitted for the proper type of gas by of CSA B149.1 Natural Gas and Propane Gas Installation checking the rating plate. Code, and/or local codes. Gas piping should be supported by suitable hangers or floor stands, not the unit. NOTE: This unit is equipped to operate at elevations up to 2000 feet(610m). However,the unit will function A WARNING properly without the use of high altitude modification at Do not use open flame to check for leaks.An open elevations up to 10,000 feet(3050 m). flame could lead to explosion, which could result in For elevations above 2000 ft(600 m),the input gas rating property damage, serious injury or death. shall be reduced at a rate of 4 percent for each 1000 ft (300 m)above sea level.This must be considered before selecting the equipment size. A WARNING If an inline high gas pressure regulator is used, it must 2. The gas pressure must be 4.0-10.5 inches w.c. be of the lockup type and located a minimum of 10 feet 3. Table 2 offers some gas pipe sizing information. Refer from the unit. Failure to do so may result in insufficient to the applicable gas code for more detailed sizing gas volume supplied to the unit. information. 4. Run gas supply line in accordance with all applicable codes. 5. Locate and install manual shutoff valves in accordance with state and local requirements. NOTE:After placing the boiler in operation, the ignition 6. Asedimenttrap must be provided upstream of the gas system safety shutoff device must be tested. See 11.A controls. on page 111 7. The unit and its individual shutoff valve must be disconnected from the gas supply piping during any pressure testing of that system at test pressures in NOTE: This unit and all other gas units sharing the excess of 1/2 PSIG(3.45kpa). gas supply line must be firing at maximum capacity 8. The unit must be isolated from the gas supply system to properly measure the inlet supply pressure. The by closing its individual manual shutoff valve during any pressure can be measured at the supply pressure pressure testing of the gas supply piping system at test port on the gas valve. Low gas pressure could be an pressures equal to or less than 1/2 PSIG(3.45kpa). indication of an undersized gas meter, undersized gas 9. The unit and its gas connection must be leak tested supply lines and/or an obstructed gas supply line. The before placing it in operation. units may be equipped with low and high pressure gas switches that are integrally vent limited. These types of 10. Purge all air from gas lines devices do not require venting to atmosphere. RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 24 LAARS Heating Systems 3.B Gas Pipe Sizing SECTION 4 Water Flow and The following are gas line sizing examples from the Headloss Data National Fuel Gas Code. Size your gas lines properly, based on your installation and all applicable codes. 4.A General Water Flow Information SCH 40 METAL PIPE CAPACITY FOR 0.60 SPECIFIC This appliance is a water-tube design that requires GRAVITY NATURAL GAS water flow for operation. Boilers are generally used in NOMINAL PIPE SIZE @ 0.30"W.C. PRESSURE DROP closed systems, so Laars bases the water flow data on temperature rise (difference between boiler inlet and Nominal: 2" 2/2 3" 4" 5 outlet temperature.) Water heaters are used in open Actual D. 2.067" 2.469" 3.068" 4.026" 5.047" systems, with new water constantly being introduced Length(If) Capacity in Cubic Feet of Gas per Hour to the system. This brings a constant supply of new 10 4,020 6,400 11,300 23,100 41,800 minerals into the system, as well. Minerals can cause 20 2,760 4,400 7,780 15,900 28,700 scale to form on the inside surfaces of water heater 30 2,220 3,530 6,250 12,700 23,000 systems (heaters, tanks, pipes, valves, and other components). Laars uses the water-tube design to 40 1,900 3,020 5,350 10,900 19,700 its advantage by basing the water flow data on water 50 1,680 2,680 4,740 9,660 17,500 hardness, to assist in minimizing mineral buildup in the 60 1,520 2,430 4,290 8,760 15,800 heater's waterways. 70 1,400 2,230 3,950 8,050 14,600 80 1,300 2,080 3,670 7,490 13,600 90 1,220 1,950 3,450 7,030 12,700 100 1,160 1,840 3,260 6,640 12,000 125 1,020 1,630 2,890 5,890 10,600 150 928 1,480 2,610 5,330 9,650 175 854 1,360 2,410 4,910 8,880 200 794 1,270 2,240 4,560 8,260 150 704 1,120 1,980 4,050 7,320 300 638 1,020 1,800 3,670 6,630 350 587 935 1,650 3,370 6,100 400 546 870 1,540 3,140 5,680 Table 2. Pipe Capacity for Natural Gas Notes: 1. Inlet pressure- Less than 2 psi 2. Pressure drop-0.5 in w.c. 3. Specific gravity-0.60 4. Schedule 40 metallic pipe RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 25 4.B Boiler Water Flow & Headloss Data See Table 11 for water flow and boiler headloss, based on heat exchanger temperature rise. Model 20°F 25°F 30°F 35°F 40°F Flow Headloss Flow Headloss Flow Headloss Flow Headloss Flow Headloss gpm ft gpm ft gpm ft gpm ft gpm ft 1250 110 25.0 88 16.4 73 11.5 63 8.6 55 6.6 1500 131 34.8 105 22.9 87 16.0 75 12.1 65 9.1 1750 152 19.5 122 13.4 102 9.4 87 6.4 76 4.2 2000 176 24.9 140 16.6 117 11.8 100 8.5 88 6.2 2500 219 36.1 175 24.7 146 17.9 125 13.4 110 10.4 3000 259 65.2 207 40.7 173 28.1 148 20.4 129 15.6 Model 11°C 14°C 17°C 19°C 22°C Flow I/m Headloss Flow I/m Headloss Flow I/m Headloss Flow I/m Headloss Flow I/m Headloss m m m m m 1250 416 7.6 333 5.0 276 3.5 238 2.6 208 2.0 1500 496 10.6 397 7.0 329 4.9 284 3.7 246 2.8 1750 575 5.9 462 4.1 386 2.9 329 2.0 288 1.3 2000 666 7.6 530 5.1 443 3.6 379 2.6 333 1.9 2500 829 11.0 662 7.5 553 5.5 473 4.1 416 3.2 3000 980 19.9 784 12.4 655 8.6 560 6.2 488 4.8 Table 11. Boiler Flow and Head Requirements 4.0 Water Heater Water Flow and Headloss Data Water flow and headloss for water heaters is based on the water's hardness, to help minimize scale (mineral) buildup inside the heater's water tubes. Table 12 shows water flow and headloss based on the hardness of the system's water. Temperature rise is shown for information and testing/troubleshooting purposes. Model 1 - 10 Grains Per Gallon Hardenss 11 - 15 Grains Per Gallon Hardness Flow Rate Headloss* (ft) Temp Rise (°F) Flow Rate Headloss*(ft) Temp Rise (°F) (gpm) (gpm) 1250 85 16.1 26 104 23.6 21 1500 90 17.9 29 110 26.3 24 1750 120 12.9 25 150 19.6 20 2000 135 16.1 26 170 24.4 21 2500 140 17.2 31 170 24.4 26 3000 150 21.0 35 183 31.5 28 Model 1 - 10 Grains Per Gallon Hardenss 11 - 15 Grains Per Gallon Hardness Flow Rate (I/m) Headloss*(m) Temp Rise(°C) Flow Rate (I/m) Headloss*(m) Temp Rise(°C) 1250 322 4.9 14 394 7.2 12 1500 341 5.5 16 416 8.0 13 1750 454 3.9 14 568 6.0 11 2000 511 4.9 14 644 7.4 11 2500 530 5.2 17 644 7.4 14 ' 3000 568 6.4 19 693 9.6 16 *Headloss is for the heater only(no piping)Allowable pH is 6.5 to 9.5 0 8/2 5/2 0 2 3 Table 12. Volume Water Flow Rates ASPEN BUILDING DEPARTMENT Page 26 LAARS Heating Systems 4.D Water Flow Recovery Data Model Temperature Rise 40°F 50°F 60°F 70°F 80°F 90°F 100°F gph gph gph gph gph gph gph 1250 3293 2634 2195 1881 1646 1463 1317 1500 3920 3136 2613 2240 1960 1742 1568 1750 4568 3654 3045 2610 2284 2030 1827 2000 2568 4214 3512 3010 2634 2341 2107 2500 6578 5262 4385 3759 3289 2923 2631 3000 7767 6214 5178 4438 3884 3452 3107 Model Temperature Rise 22°C 28°C 33°C 39°C 44°C 50°C 56°C L/h L/h L/h L/h L/h L/h L/h 1250 12463 9971 8309 7122 6232 5539 4985 1500 14837 11870 9891 8478 7418 6594 5935 1750 17290 13832 11527 9880 8645 7684 6916 2000 19942 15953 13294 11395 9971 8863 7977 2500 24899 19919 16599 14228 12449 11066 9959 3000 29401 23521 19601 16801 14701 13067 11761 Table 13. Recovery Data RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 27 SECTION 5 Piping 5.A Boiler Water Piping 5.A.1 Boiler Water Connections in the heat exchanger and condensate inside and outside NOTE: This unit must be installed in a closed pressure of the boiler from freezing. Damage due to freezing water or system with a minimum of 12 psi (82.7 kPa) static condensate is not covered by the warranty.The unit must pressure at the boiler. not be operated in conditions below 5F (-15C). If installed outdoors, and there is an event such as The water piping should be supported by suitable a power outage, interruption of gas supply, failure of hangers or floor stands. Do not support the piping with system components, activation of safety devices, etc., this unit. The hangers used should allow for expansion this may prevent a boiler from firing. Any time a boiler and contraction of pipe. Rigid hangers may transmit is subjected to freezing conditions, and the boiler noise through the system resulting from the piping sliding is not able to fire, and/or the water is not able to in the hangers. We recommend that padding be used circulate, there is a risk of freezing in the boiler or when rigid hangers are installed. Maintain 1" (2.5 cm) in the pipes in the system. When water freezes, it clearance to combustibles for all hot water pipes. expands. This may result in bursting of pipes, or damage Suggested piping diagrams are shown in Figure 4 to the boiler, and this could result in leaking or flooding through Figure 6. These diagrams are meant only as conditions. guides. Components required by local codes must be properly installed. Do not use automotive antifreeze. To help prevent Pipe the discharge of the relief valve (full size)to a drain freezing, The manufacturer recommends the use of or in a manner to prevent injury in the event of pressure inhibited glycol concentrations between 20% and 35% relief. Install an air purger, air vent, expansion tank, glycol. Typically, this concentration will serve as burst hydronic flow check valve in the system supply loop, and protection for temperatures down to approximately-5°F any other devices required by local codes. The minimum (-20°C). If temperatures are expected to be lower than fill pressure must be 12 psig (82.7 kPa). Install shutoff -5°F (-20°C), glycol concentrations up to 50% can be valves where required by code. used. When concentrations greater than 35% are used, water flow rates must be increased to maintain the desired temperature rise through the boiler. 5.A.2 Cold Water Make-Up A WARNING 1. Connect the cold water supply to the inlet Glycol must not be used in domestic hot water connection of an automatic fill valve. applications. Refer to 5.B.4 on page 31 for instructions on freeze protection for units(domestic hot 2. Install a suitable back flow preventer between the water). automatic fill valve and the cold water supply. 3. Install shut off valves where required. Different glycol products may provide varying degrees In some installations, a hot water heating boiler is of protection. Glycol products must be maintained connected to heating coils located in an air handling properly in a heating system, or they may become unit where the coils may be exposed to refrigerated air ineffective. Consult the glycol specifications, or the glycol circulation. In these cases, the boilerpipingmanufacturer, for information about specific products, system must y maintenance of solutions, and set up according to your be equipped with flow control valves or other automatic means to prevent gravity circulation of the boiler water particular conditions. during the cooling cycle. The following manufacturers offer glycols, inhibitors, A boiler installed above radiation level, or as required by and anti foamants that are suitable for use in the unit. the authority having jurisdiction, must be provided with a Please refer to the manufacturers instructions for proper low water cutoff device either as a part of the boiler or at selection and application. the time of boiler installation. • Sentinel Performance Solutions Group • Hercules Chemical Company 5.A.3 Freeze Protection • Dow Chemical Company /�� This unit may be installed indoors or outdoors. If installing The boiler control offers some assistance wi �/ outdoors in a location that may experience freezing protection,as long as the boiler is energized,and able to fire. temperatures, precautions must be taken to prevent water 0 8/2 5/2 0 2 3 ASPEN BUILDING DEPARTMENT Page 28 LAARS Heating Systems 5.A.4 Suggested Boiler Piping Schematics 1. If the outlet sensor detects less than 45°F, the control Figure 4 on page 28 through Figure 6 on page 30 energizes the boiler pump. show suggested piping configurations for boilers. These 2. If the outlet sensor detects less than 35°F, the control diagrams are only meant as guides.All components or will fire the boiler. piping required by local code must be installed. 3. Once in freeze protect mode, the boiler will remain in that state until the outlet sensor detects greater than 50°F. —61=6— ors nnN'nN'IVV VV= Low temp radiant zone Space heating zone circuit i 4( 1 air vent y _a 1 —�I A I I1C —�;.—ilni—�■ M -i M- I -i • 4 pipe dia.max 4 pipe dia.max 4 pipe dia.max Water Feed controls 11/1 Expansion tank 4 pipe dia.max F- -I • 4 pipe dia.max rl Note- This drawing isa schematic \1/,l representation of a piping style, and isnot intended to be used asaworking installation drawing. A Local code requirements must be met. na Indirect DWH Tank • Domestic Hot water out . 1—th I Cold water —• (1 7—— — a Figure 4. Boiler Piping—Single Boiler with Multiple �f— —U RECEIVED Temperature Zones, 0 8/2 5/2 02 3 Zoning with circulators, and an indirect tank ASPEN BUILDING DEPARTMENT The OMNITHERM Page 29 Note- Space heating This drawing is a schematic zone circuits representation of a piping style, ' ITf4f= and isnot intended to be used as a working installation drawing. Local code requirements r/ must be met. ►• III11111liii Space heating zone circuit Low temp.radiant zone 4( r C-Ea Air vent .,u IN IN L' 1 4 Ile 4 pipe dia.max. 4 pipe dia.max. Water feed controls Expansion tank 4 pipe dia.max. r t Common piping must be sized for the combined water flow of all the boilers. A ,., Anti-scald t. tom] E.l t.l ti] E. IC] mixing valve me • me • Domestic y hot water out Cold lt.- water Indirect DHW tank - . - - : o,1 Note-Indirect pump must be sized for boiler and indirect iniur Cd fl Figure 5. Boiler Piping—Multiple Boilers, Multiple Temperature Zones, Reverse Return. Zoning with circulators and DHW Cascade Option. 08/25/2023 ASPEN BUILDING DEPARTMENT Page 30 LAARS Heating Systems Note- High temp. This drawing is a schematic representation of Space heating space heating zone circuit a piping style, and is not intended to be used zone circuits as a working installation drawing. Local code requirements must be met. Space heating zone circuit r41 _ _ Ire r Ire v Air vent . . 11 a I- -1 I- -I I- -I "��"� 4 pipe dia. max. 4 pipe dia. max. Water feed controls Expansion tank 4 pipe dia. max. I.- -4 ■§I . C Common piping must be sized for the combined water flow of all the boilers. )111111 I I I I Anti-scald Ai D a-I II ¢a-I ii EC mixing valve 4 pipe Dia. Max v Domestic _L hot water out i�i EI_ T i -if-- -} � I_ I.. Cold =J water 7 I= I _ o ' _ _ o �:. Lag Lag Lead Indirect DHW tank Note-Indirect pump must be sized for boiler and indirect Figure 6. Boiler Piping—Multiple Boilers, Indirect DHW Off of One Boiler DECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 31 5.B Water Heaters 5.B.1 Water Quality 5.B.3 Cold Water Make-Up Water heaters must be installed in water conditions of The cold water make-up may be connected to the tank 15 gpg hardness or less, with a pH range of 6.5 to 9.5 as shown in Figure 7 through Figure 9. If the tank does pH. Values outside of this range may reduce the life not have a tapping for the cold water supply, the supply expectancy of the product. Operating at higher water may be run to the pipe between the tank and boiler hardness levels will cause heat exchanger fouling, outlet. Install back-flow preventers and shut-offs where erosion, or corrosion, leading to premature component needed or required by code. failure, reduced efficiency, heat exchanger failure or system failure. Failure of this type will not be warranted. If the water in use exceeds the conditions recommended, 5.B.4 Freeze Protection water softeners or other devices should be installed to improve water quality. If installing outdoors in a location that may experience freezing temperatures, precautions must be taken to 5.B.2 Heater Water Connections prevent water in the heat exchanger and condensate inside and outside of the boiler from freezing. Damage The water piping should be supported by suitable due to freezing water or condensate is not covered by the hangers and floor stands. Do not support the piping with warranty. this unit. The hangers used should allow for expansion If installed indoors and there is an event such as a power and contraction of copper pipe. Rigid hangers may outage, component failure or other issue when freezing transmit noise through the system resulting from piping is likely, the heater and system must be drained to avoid sliding in the hangers. We recommend that padding be the risk of damage due to freezing. Glycol must not be used when rigid hangers are installed. Maintain 1" (2.5 used in volume water heating applications. cm) clearance to combustibles for hot water pipes. Pipe the discharge of the relief valve (full size)to the drain or in a manner to prevent injury in the event of 5.B.5 Suggested Piping Schematics pressure relief. Install a diaphragm-type expansion tank, flow check, and shutoff valves where needed or as Figure 7 through Figure 9 shows suggested piping required by code. configurations for water heaters. These diagrams are only meant as guides.All components or piping required by local code must be installed. l G�� NOTE:This drawing shows suggested piping ` e- configuration and valving.Check with local codes and ordinances for additional requirements. ' :0 NOTES: `lam i 1. Locate DHW sensor or remote aquastat well ;, t mo . S J in lower 1/3 of tank. DPP lY 2. Backflow preventer may be required-check local codes. I lET 3. Thermal expansion tank may be required-check NEATER I local codes. FIELD SUPPLIED OU). 4. Caution: Pump sizing must be based upon water PUMP (See Note 3) FT hardness at job site. 5. If the tank does not have a tapping for the cold water supply,the supply may be run to the pipe between the tank and boiler inlet. Figure 7. DHW Piping -One Heater, One Vertical Tank 08/25/2023 ASPEN BUILDING DEPARTMENT Page 32 LAARS Heating Systems `I 13 ad NOTE:This drawing shows suggested piping 4 /-` 00. ® f— ^O configuration and valving.Check 1 0 with local codes and ordinances for TwrL�FA1zR additional requirements. �, ` EJ , ,iIN� fz� fgTFR 0 GIRD. R CIDuqIELD SUPPPPLIED ,, PUMP(see Note 3) 12( 5OPP ._.---,ib vckE 1 ? e i1 I ® NOTES: . 11 1. Locate the DHW sensor or remote aquastat well in lower 1/3 of tank. 0 2. Backflow preventer may be required-check local codes. 1 3. Thermal expansion tank may be required-check local codes. 4. Caution: Pump sizing must be based upon water hardness at job site. 5. If the tank does not have a tapping for the cold water supply,the supply may be run to the pipe between the tank and boiler inlet. Figure 8. DHW Piping -One Heater, Two Vertical Tanks NOTES: 1. Optional CWMU&recirculation line location. r 2. Locate NTV DHW sensor or remote aquastat well in lower 1/3 of tank. 3. Back Flow Preventer may be required.Check local codes. 4. Thermal expansion tank may be required.Check local codes. 5. CAUTION: Pump sizing must be based upon water hardness at 111111*111 job site.9t,„ Rf A1fR INl _ °uTl�l 0I. ►1 ��R DUT� ►' 101 ON°® �R ►4 N�H ►4 Ip SIR-. 0 1 I Tf o ..i 0 NOTE:This drawing shows suggested 0 piping configuration and l'f 2 valving.Check with local ►, I c ►, codes and ordinances for Q additional requirements. , RECEIVED 08/25/2023 Figure 9. DHW Piping -Two Heaters, Two Vertical Tanks ASPEN BUILDING DEPARTMENT The OMNITHERM Page 33 SECTION 6 Condensate Drain Trap SECTION 7 Electrical Connections This appliance creates condensation at some operating 7.A Installation Warnings conditions as a by-product of cold water supply conditions.The condensate must be drained from unit. A CAUTION A combination condensate drain/trap is included on The supply voltage to this unit must not be the unit. See Figure 10 This is used to drain the disconnected, except for service or isolation, or unless condensate from the heat exchanger of the unit. This otherwise instructed by procedures outlined in this condensate drain trap must be installed to prevent the manual. To signal a call for heat, use the heat demand accumulation of condensate. Connect a 3/4" PVC pipe inputs, as shown in the wiring diagram. between the drain connection and a floor drain. The PVC pipe must continuously slope downward toward DO NOT MAKE AND BREAK THE LINE VOLTAGE the drain,with no spiraling. If there is no accessible TO THE UNIT TO SIGNAL A CALL FOR HEAT. A floor drain, or if the drain pipe cannot be installed with call for heat/end call for heat MUST be connected to the proper slope, a condensate pump will be needed to the heat demand terminals. Some components are ensure that condensate is removed. designed to have constant voltage during normal Consult local codes for direction on disposal of operation. If the units supply voltage is toggled as a call for heat signal, premature failure of these condensate. In some cases (code requirements or components may result. drain material), condensate will need to be neutralized. A condensate neutralizer is not included with the unit, but is available from Laars as an accessory. If a _ neutralizer is required, it is helpful to install the boiler A CAUTION or water heater on a raised 4" (minimum)concrete Label all wires prior to disconnection when servicing platform. This will generally allow sufficient elevation controls.Wiring errors can cause improperand dangerous for the condensate neutralizer to be installed below the operation.Verify proper operation afteroperation servicing. condensate trap. See Figure 10. If the unit is installed outdoors in a location that may experience freezing temperatures, precautions must be A ATTENTION taken to prevent condensate from freezing. Damage Au moment de l'entretien des commandes, etiquetez due to freezing condensate is not covered by the tous les fils avant de les debrancher. Les erreurs de warranty. cablage peuvent nuire au bon fonctionnement et etre dangereuses. S'assurer que l'appareil fonctionne A CAUTION adequatement une fois I'entretien termine. Condensate is mildly acidic(pH=5)and may harm some floor drains and/or pipes, particularly those A WARNING that are metal. Ensure that the drain, drainpipe, and anything that will come in contact with the The unit must be electrically grounded in accordance with condensate can withstand the acidity, or neutralize the requirements of the authority having jurisdiction or, in the condensate before disposal. Damage caused the absence of such requirements,with the latest edition of the National Electrical Code,ANSI/NFPA 70, in the by failure to install a neutralizer kit or to U.S. and with the latest edition of CSA C22.1 Canadian adequately treat condensate will not be the Electrical Code, Part 1, in Canada. Do not rely on the gas manufacturer's responsibility. or water piping to ground the metal parts of the unit. Plastic pipe or dielectric unions may isolate the unit electrically. 'db ?, r Service and maintenance personnel,who work on or 2-' .; around the unit, may be standing on wet floors and could ailt be electrocuted by an ungrounded unit. Electrocution can , result in severe injury or death. ' N h' I Single pole switches, including those of safety controls and 101 '' protective devices, must not be wired in a grounded line. r All electrical connections are made on the ter ' I luk Neutralizer kit is that are located inside the control panel. VE D not included. All internal electrical components have been prewired. No Figure 10. Raised Concrete Platform. 4" Min attempt should be made to connect electrical e ,'3Sn/y2 02 3 other location except the terminal blocks. ASPEN BUILDING DEPARTMENT Page 34 LAARS Heating Systems 7.B Main Power Connections This unit is provided with an electrical junction box on the rear panel for main power connections. See Figure ' 77,.,. _ ___,,_,___ 11. All power wires are factory installed between this �� t; • , 0 junction box and the main high voltage box at the front 1 1 of the unit. The unit is available with multiple voltage i r ' p p g r:rrl to ada t to customer needs ranging from 1 • ' l fj�ill - .-- packages p 9 9 1 -. IIIGii. I .., , I -7 120-600 volts with single or 3 phase versions. Refer to j -1 the rating plate and Table 14 for appropriate voltage and 4 I �I 1 m.11 t current ratings. „,�' II • On all models, the incoming voltage must be protected ' ,t - . • by an appropriately sized circuit breaker, installed by ,1' qualified/authorized personnel. The 120-volt and 24- r I volt systems will be protected with resettable fuses - �� mounted in the top of the high voltage box. The 24- r e volt transformer is also redundantly protected by its ` 1 j._ 1 r _ integrated 4 amp resettable fuse. r" ;1_s �` e ., _ `' r On three phase models, a step down transformer(which _ , I ..: is protected using an appropriate din rail mounted circuit ° - •,0 : ., °ite breaker)generates 120-volt single phase to power the 24-volt transformer. The 120-volt and 24-volt outputs of either transformer are protected with resettable fuses VIEW from the BACK mounted in the top of the high voltage box. The 24- volt transformer is also redundantly protected by its Power and Field Co nections must be integrated 4 amp resettable fuse. wired vertically between cascaded units. All power connections must be run through the back Use the factory installed conduit to run all wiring. panel as shown in Figure 11. Figure 11. Wiring Access 7.0 Main Power Data Voltage 1250 Current 1500 Current 1750 Current 2000 Current 2500 Current 3000 Current FLA MCA MOP FLA MCA MOP FLA MCA MOP FLA MCA MOP FLA MCA MOP FLA MCA MOP 120V, 1 9.4 11.8 20 9.4 11.8 20 9.2 11.5 20 9.2 11.5 20 N/A N/A N/A N/A N/A N/A phase 208V, 1 N/A N/A N/A 4.8 6.0 15 5.0 6.3 15 5.0 6.3 15 5.0 6.3 15 N/A N/A N/A phase 220/240 N/A N/A N/A 4.8 5.8 15 4.8 6.0 15 4.8 6.0 15 4.8 6.0 15 N/A N/A N/A V, 1 phase 208V,3 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.2 6.5 15 6.2 7.8 15 phase 480V,3 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.2 2.8 15 2.7 3.4 15 phase 600V,3 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.8 2.3 15 2.2 2.8 15 phase Table 14. Electrical Data FLA-Full Load Amperage MCA-Minimum Circuit Ampacity MOP-Maximum Over-current Protection Single Phase Three Phase A Caution 120 240 208 600 480 208 The supply voltage to the unit must not be disengaged, L1 Blk Blk Blk L1 P BR Blk except for service or isolation,or unless of r �� 1 L2/N Wht Red Red L2 V 0 Red instructed by procedures outlined in this n'i lial.ITO .,li 1) L3 T Y BL signal a call for heat, use the correct terminals as instructed in Figure 13 08/25/2023 Table 15. Phase Voltage Color Identification _ ASPEN BUILDING DEPARTMENT The OMNITHERM Page 35 7.D Control Panel Layout 12UL 9 8 1 6 T 120E 10 24N 11 1 24N 12 ° 1 a 24N 13 0it e ••• i (5 0 N 24V 14 ® 24V 15 e 24V 16 L l� BOILER PUMP (N) BOILER PUMP (L) 18 C©".n-O A-m---. )7 DHW PUMP 19 DHW PUMP 20 7 iO 'Itl'�.O�� a SYSTEM PUMP 21 �.r--i�! z SYSTEM PUMP 22 o o '� ti 9 SPARE 1 23 5 c3 °I ; �_ _ SPARE 1 24 •• IL l; c SPARE 2 25 _c. ' • Ft SPARE 2 26 _. '° 'di V ALARM BELL 27 um ® -- ALARM BELL 28 ° �" al SYSTEM SUPPLY 29 O - 0, SYSTEM SUPPLY 30 2 on 0•�11 =i x` SYSTEM RETURN 31 1_ i n _ 0i ' 1 o SYSTEM RETURN 32 0 0 0 I z DHW 33 w ® DHW 34 OUTDOOR 35 OUTDOOR 36 N CH1/DHW1 37 O ® (� O z CH1/DHW1 38 YJ 2 CH2/DHW2 39 3 o CH2/DHW2 40 H ITEM w DHW/DHW3 41 QTY. DESCRIPTION NO. = DHW/DHW3 42 1 TRANSFORMER ASSY, 120-24V,75 VA 1 r SPARE 1 43 5 BUSHING,NYLON,7/8,SLIT 2 z SPARE 1 44 1 LABEL,CONTROL PANEL,MGT 3 W SPARE 2 45 1 LABEL,TERMINAL BLOCK,CONTROL PANEL,OMT 4 a 1 BOARD,CONTROL,COMMERCIAL BOILER,SIT 5 5,- SPARE 2 46 1 _ SWITCH,CUTOFF,LOW WATER 6 z BAS 0-1OVD 47 15 STANDOFF,PCB 7 BAS 0-10VDC 48 1 PANEL,CONTROL 8 H PUMP 0-10VDC 49 O PUMP 0-10VDC 50 Figure 12. Control Panel Layout and Components RUN C 51 I RUN-N.C. 52 a z RUN-N.O. 53 7.E Field Connections o ALARM-C 54 Wiring for all field connections must be run through the available electrical o ALARM-N.C. 55 conduit to the back of the unit. See Figure 11. ALARM-N.O. 56 CASCADE-B 57 When running the field connection wiring between the units in a cascading 0 71-installation, always exit and enter the unit through the lower back panels CASCADE A 58 so that during future servicing, the wires do not have to be disconnected in CASCADE GND 59 order to remove the top and side panels. BMS B 60 71- BMS-A 61 , It is up to the electrician to install all power and system wiring a �, as per codes and best practices. BMS GND 62 Figure 13. Field Connec A25/2023 (on Terminal Block 1) ASPEN BUILDING DEPARTMENT Page 36 LAARS Heating Systems 7.E.1 Power A Notice 7.E.2 Boiler Pump When running the Power and Field Connection wiring between the units (Cascade, System If connecting a boiler contactor or pump, use terminals Sensor, Outdoor Sensor, Building Automation, 17 (neutral) and 18 (line voltage). The output of these Etc), always Exit and Enter the wiring through terminals is 120VAC with a maximum output current of the lower back panels so that during future 1.5 amps. Boiler pump functionality is configured using servicing, the wires are not in the way and do not the touch screen. (See 8.D.5 on page 76) have to be disconnected in order to remove the The controller energizes the appropriate pump contacts top and side panels. when it receives a call for heat. Once the call for heat is satisfied, the pumps will remain on for the defined pump overrun time. A Attention The boiler pump is fed 120VAC internally from the main Lors de ('execution du domaine d'alimentation et power feed. The current rating of this output is 2.5A les fils electriques de connexion entre les unites maximum at 250VAC. The system and DHW pump (Cascade, Capteur, systeme capteur exterieur, outputs are dry contacts, both with current ratings of domotique, etc), TOUJOURS quitter et entrer les 1.5A maximum at 250VAC. An appropriately sized unites a travers la partie inferieure arriere de sorte contactor must be supplied and installed by a qualified qu'au cours de l'entretien futur, les fils ne sont pas technician for each of these outputs. Pump functionality dans la voie et n'ont pas a etre deconnecte afin is configured using the touchscreen. d'enlever le haut et le cote. 7.E.3 Dry Contacts DHW Pump-when connecting a domestic hot water (DHW) pump, use terminals 19 and 20. As this is a dry System Return - if used, is connected to terminals 31 contact, the DHW pump supply voltage or DHW pump and 32. When connected, the controller automatically relay coil voltage would be applied at terminal 19, and detects the presence of this sensor and the temperature when the DHW pump is activated, would be available is shown on the home screen above the blue system at terminal 20. Contact ratings are 250VAC, 1.5A output arrow. maximum. DHW pump functionality is configured using the touch screen. Domestic Hot Water(DHW) - if a tank sensor is used, System Pump - if connecting a system pump, use connect to terminals 33 and 34. When connected, the terminals 21 and 22.As this is a dry contact, the system unit will automatically detect the presence of this sensor pump supply voltage or system pump relay coil voltage and perform the DHW thermostat function based on the would be applied at terminal 21, and when the system settings selected at DHW or DHW3 parameter screens. pump is activated, power will be available at terminal 22. The temperature is displayed on the home screen below Contact ratings are 250VAC, 1.5A maximum. System the faucet icon. The controller initiates a call for heat, pump functionality is configured using the touch screen. maintaining the set point within the on and off hysteresis selected at DHW or DHW3 demand screen, without any Spare 1 and Spare 2 - no functionality available on this need for jumpers. unit. Note: The Heat Demands at 33 to 34 are used for sensors 7.E.4 Alarm Bell only, aquastats would be applied to the "Heat Demand" terminals 41 and 42 (see Heat Demands section below). If connecting an alarm bell, use terminals 27 and 28. As this is a dry contact, the alarm bell supply voltage is Outdoor- if used, is connected to terminals 35 and 36. applied at terminal 27, with the alarm bell connected to When connected,the controller automatically detects the terminal 28. presence of this sensor and the temperature is shown on the home screen as the Outdoor Ambient Temperature(OAT). 7.E.5 Sensors If installed, options such as outdoor reset and warm System Supply- if used, is connected to terminals 29 weather shutdown can be enabled through the display. and 30. When connected, the controller automatically Always install the Outdoor Sensor at an outdoor location detects the presence of this sensor and the temperature that is not affected by false temperature r s is shown on the home screen above the red system sunlight or hot equipment. kACI�E� supply arrow. When installed, the unit controls the firing rate to maintain the system supply temperature to the heat demand set point (or CSP)and hysteresis. 08 2 5 2 2 3 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 37 7.E.6 Heat Demands (Boiler/Water Heater) Alarm -when used, is connected to terminals 54 CH1/DHW1 - if a thermostat/aquastat or end switch (common), 55 (normally closed), and 56 (normally open). (isolated contact only) is used as a heat demand, connect The controller closes the normally open set of contacts to terminals 37 and 38 . CH1/DHW1 functionality is whenever the unit is locked out. Contact ratings are configured on the touch screen on the CH1/DHW1 250VAC, 0.6A maximum. screens. 7.E.11 RS485 for Cascade (Lead Lag) CH2/DHW2—if an additional thermostat/aquastat or This commercial unit can be connected in Lead Lag up end switch (isolated contact only) is required as a heat to a total of 8 units (controllers). One as the Lead control demand, connect to terminals 39 and 40. CH2/DHW2 and up to 7 more as the Lag controllers. functionality is configured on the touch screen on Prior to wiring units for cascade operations, select one CH2/DHW2 screens. unit as the lead boiler/heater. Other units connected to the lead boiler/heater will be referred to as lag DHW/DHW3—if an aquastat, end switch (isolated units. Communication between lead and lag units is contact only), or flow switch is used as a DHW heat accomplished using RS485. When wiring these units demand, connect to terminals 41 and 42. If preferred, a for cascade operations, use terminals 57, 58, and 59 DHW tank sensor can be used in lieu of an aquastat to (See Figure 13 on page 35). Use 2-wire twisted pair, generate a heat demand (see Sensors section above). shielded w/drain (communication cable) between units. NOTE: CH1/DHW1, CH2/DHW2, and DHW heat demand Connect one wire of the communication cable to A(-), terminal 58, and the other wire to terminal B (+), terminal contacts must be dry contacts. The controllers heat 57, and a third conductor to GND, terminal 59 (see demand voltage is 24VDC. RS485 NOTE: Grounding). Connect the other end of the cable to the next unit, matching the termination wiring on the previous unit. If more than two units are cascaded 7.E.7 Spare Inputs together, daisy chain the wiring from unit to unit, keeping There is no functionality associated with these inputs. the cables as short as possible.A system supply sensor must be installed and connected to the lead boiler. The lead boiler will use this system supply sensor as the 7.E.8 Analog Input, BMS temperature control sensor for cascade operations. BMS—if an analog input (0-10VDC or 4-20mA)from a Section 8.D.4.a on page 73 shows how these systems Building Management System is used as a remote set are configured in the touchscreen controls.Any heat point or remote firing rate command, wire to terminals 47 demand at the lead boiler/heater will be treated as a and 48 (See Figure 13 on page 35). Polarity is shown cascade heat demand. on the terminal label. Selecting voltage or current input is accomplished through jumper placement on the control 7.E.12 RS485 BMS board. Analog BMS functionality is configured using the BMS— if communicating to the unit via RS485 serial touch screen. communications, either Modbus or BACnet MSTP, connect to terminals 60, 61, and 62 (Figure 13 on 7.E.9 Analog Output, Pump page 35. Use 2-wire twisted pair, shielded w/drain Pump—when using Vari-Prime pump control, wire the (communication cable) between units. Connect one pump speed wires to terminals 49 and 50. Polarity is wire of the communication cable to A(-), terminal 61, shown on the terminal label. Selecting voltage or current and the other wire to terminal B (+), terminal 60, and a output is accomplished through jumper placement on third conductor to GND, terminal 62 (see RS485 NOTE: the control board. Vari-Prime functionality is configured Grounding &Shielding). using the touch screen. Section 8.D.10.d on page 85 shows how these systems are configured in the touchscreen controls. 7.E.10 Dry Contacts (Run &Alarm) Run - when used, is connected to terminals 51 (common), 52 (normally closed), and 53 (normally open) A WARNING (See Figure 13 on page 35). The controller closes When servicing the controls, label all w � ���� the normally open set of contacts whenever the unit is disconnection. Wiring errors can cans running. Contact ratings are 250VAC, 0.6A maximum. dangerous operation. Verify proper operation after servicing. 08/25/2023 ASPEN BUILDING DEPARTMENT Page 38 LAARS Heating Systems 7.E.12 RS485 BMS (continued) RS485 NOTE: RS485 Grounding & Shielding Grounding: To ensure that common mode voltage does not compromise the date, or damage the equipment, an extra wire should always be used to connect the signal grounds. This means that a "two-wire" system actually requires three conductors. Although it is possible to obtain cable with a twisted pair and a third conductor, it is simpler to use a cable with an extra twisted pair and use one or both conductors for the signal ground. Shielding: It is often difficult to make a clear determination as to whether shielded cable is required in an application. Since the added cost of shielded cable is usually minimal, in most cases it is worth installing. If shielded cable is used, the shield should be grounded at one end only, preferably to earth ground. It is not recommended to use a shield drain wire as the signal ground. e U HLHKIVI-l_ 74 e U HLHKIVI-L J4 ® U O ALARM-N.C. 55 0 ALARM-N.C. 0 VJ e _:14 -k • 0 _ e:UU - ► I m 0 ,,, CASCADE-B 57 __ .0 L, CASCADE-B 57 4=_ Li, CASC CASCADE-A 58 # - -� 4 CASCADE-A 58 ,y _ R CASCAI in CASCADE-GND 59 ' - -O z CASCADE-GND 59 'ri y`•r _ CASCAI 0 ,,, BMS-B 60 I la Ln BMS-B •60 li Y Y 4 e ,,, BMS- BMS-A 61 m BMS-A 61 :, : : m BMS- in BMS-GND 62 : 0 cc BMS-GND 62 :: : I m cc BMS I p : , Lead Lag 1, , ; I p - I I I I " A A. Figure 14. Cascade Wiring Connections O HLHKIVI-1. J4 0 0 KIVI-,.. 0 U H■ U m ALARM-N.C. 55 m z ALARM-N.C. 1 ALAR 'M-N.O.II 56 0 RM-N.O. 0 ALARM e in CASCADE-B 57 G , CASCADE-B 57 e u, CASC 0 CASCADE-A 58 0 CASCADE-A 58 0 CASCAI O - CASCADE-GND 59 0 z CASCADE-GND 59 0 CASCAI BMS-B 60 0 I„ BMS-B 60 4=_0 �, BMS- LI)CO • BMS-A 61 - -0 BMS-A 61 r-iyt _ BMS- cc BMS-GND 62 ,- - -I z BMS-GND 62 '�y`��• _ ccBMS- I II II 1 0 I II ' V • ti Y I it Y y I II Y h ., ., , - - 1., y. Y {,;U RECEIVED Y Figure 15. BMS Wiring Connections 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 39 7.F Modbus/BACnet Memory Map Modbus Data Object Address R/W Map Descriptor Name Type ID Read/Write Notes 0 Read Inlet sensor Al 0 Read 1 Read Outlet sensor Al 1 Read 3 Read DHW sensor Al 3 Read 4 Read System Inlet Sensor Al 4 Read 5 Read System Outlet Sensor Al 5 Read 6 Read Outdoor Sensor Al 6 Read 7 Read Flue Sensor Al 7 Read 12 Read Flame Signal 1 Al 12 Read 14 Read 0-10VDC(4-20mA)Input for BMS Al 14 Read bit)=Flow Switch bitl=LWCO bit2=MRHL 18 Read Safety Chain Status Al 18 Read bit3=SV2 Valve Interlock bit4=High Gas Pressure bits=Low Gas Pressure bit6=ARHL bit7=Condensate Level 19 Read Non-safety Chain Status Al 19 Read bit0=Field Input 1 bitl=Field Input 2 0=None 1=Anti-Short Cycle 2=Service 3=DHW 20 Read Demand source Al 20 Read 4=Cascade 5=External 6=CH1 7=CH2 10=Anti-Frost 11=Warm Weather Shutdown bit()=Run Contact bitl=Alarm Contact bit2=DHW Pump 21 Read Digital Output Status Al 21 Read bit3=System Pump bit5=Aux Dry Contact 1 bit6=Aux Dry Contact 2 bit7=Boiler Pump bit8=Aux Powered Contact 22 Read Gas and Pilot Valve Status Al 22 Read bit 0=N/A bit 1 =Burner 1 Gas valve 1 23 Read 0-10VDC(4-20mA)Output for Pump Speed Al 23 Read mV 27 Read Modulating Fan 1 -Speed Al 27 Read RPM 33 Read Modulating Burnerl Firing rate Al 33 Read % LOW FLOW ERROR=0 LOW WATER CUT OFF ERROR=1 MANUAL RESET HIGH LIMIT ERROR=2 BLOCKED FLUE ERROR=3 HIGH GAS PRESSURE ERROR=4 LOW GAS PRESSURE ERROR=5 AUTO RESET HIGH LIMIT ERROR=6 SPARE SAFETY CHAIN ERROR=7 OUTLET PROBE ERROR=8 OUTLET PROBE DRIFT ERROR=9 35 Read Lockout Code Al 35 Read OUTLET PROBE HIGH LIMIT ERROR=10 FLUE PROBE ERROR=11 FLUE PROBE DRIFT ERROR=13 FLUE PROBE HIGH LIMIT ERROR=14 INLET PROBE ERROR=15 DELTA T ERROR=16 GENERIC LOCKOUT=17 BURNER1 MAX TRIALS ERROR=22 BURNER1 MAX FLAME LOST ERROR=24 BURNER1 FAN SPEED ERROR=28 NO LOCKOUT=255 24VDC ERROR=30 24VAC ERROR=31 DHW PROBE SUPPLYRR SYSTEM OR=32 PROBE ERRO 1 pE IVE D 08/25/2023 ASPEN BUILDING DEPARTMENT Page 40 LAARS Heating Systems 7.F Modbus/BACnet Memory Map (continued) Modbus Data Object Address R/W Map Descriptor Name Type ID Read/Write Notes 36 Read Error Code Al 36 Read SYSTEM RETURN PROBE ERROR=34 OUTDOOR PROBE ERROR=35 FLUE PROBE ERROR=36 HIGH LIMIT AUTO ERROR=41 HIGH DELTA T ERROR=42 FAN SPEED ERROR=43 38 Read History-DHW Demand Cycles Al 38 Read x 10 39 Read History-CH1 Demand Cycles Al 39 Read x 10 40 Read History-CH2 Demand Cycles Al 40 Read x 10 43 Read History-Cascade Demand Cycles Al 43 Read x 10 44 Read History-Burner Stage 1 Cycles Al 44 Read x 10 48 Read History-Boiler Pump Cycles Al 48 Read x 10 49 Read History-DHW Pump Cycles Al 49 Read x 10 50 Read History-System Pump Cycles Al 50 Read x 10 51 Read History-Average Boiler Outlet Temperature Al 51 Read °F 52 Read History-Maximum Boiler Outlet Temperature Al 52 Read °F 53 Read History-Minimum Boiler Outlet Temperature Al 53 Read °F 54 Read History-Boiler Average Firing Temperature Al 54 Read °F 55 Read History-Boiler Maximum Firing Time Al 55 Read Hours 56 Read History-Boiler Minimum Firing Time Al 56 Read Hours 0=None 1 =Outlet 2=DHW 64 Read Modulation Sensor Al 64 Read 3=System 4=Inlet 5=Flue 6=System Return 65 Read Active Service Al 65 Read 0=Not Present 1 =Not Available 66 Read Lag 1 State Al 66 Read 2=Available 3=Running 4=Locked Out 67 Read Lag 1 Firing Rate Al 67 Read Current firing rate(0-100%) 0=Not Present 1 =Not Available 68 Read Lag 2 State Al 68 Read 2=Available 3=Running 4=Locked Out 69 Read Lag 2 Firing Rate Al 69 Read Current firing rate(0-100%) 0=Not Present 1 =Not Available 70 Read Lag 3 State Al 70 Read 2=Available 3=Running 4=Locked Out 71 Read Lag 3 Firing Rate Al 71 Read Current firing rate(0-100%) 0=Not Present 1 =Not Available 72 Read Lag 4 State Al 72 Read 2=Available 3=Running 4=Locked Out 73 Read Lag 4 Firing Rate Al 73 Read Current firing rate(0-100%) 0=Not Present 1 =Not Available 74 Read Lag 5 State Al 74 Read 2=Available 3=Running 4=Locked Out 75 Read Lag 5 Firing Rate Al 75 Read Ccrrent firing rate(0-100%) 0=Not Present 1 =Not Available 76 Read Lag 6 State Al 76 Read 2=Available 3=Running 4=Locked Out 77 Read Lag 6 Firing Rate Al 77 Read Ccrrent firing rate(0-100%) 0=Not Present 1 =Not Available 78 Read Lag 7 State Al 78 Read 2=Available 3=Running RECEIVED 4=Locked Out 79 Read Lag 7 Firing Rate Al 79 Read Current firing rate(0-100%) 0 8/2 5/2 0 2 3 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 41 Modbus Data Object Address R/W Map Descriptor Name Type ID Read/Write Notes 0=Not Present 1 =Not Available 80 Read Lead 0 State Al 80 Read 2=Available 3=Running 4=Locked Out 81 Read Lead 0 Firing Rate Al 81 Read Current firing rate(0-100%) 83 Read Active CH Setpoint Al 83 Read 0=None 5=Start 24=Error Block 160=Standby 165=Check Safety Swtich 166=Run 177=Prepurge Open 181 =Parameter Block 183=Lockout 84 Read Burner Status 1 Al 84 Read 188=Testmode 194=Prepurge Closed 195=Wait for HIS Free 196=HIS Preheat/Prespark 200=Verify Primary SF 217=interpurge 241 =Postpurge 245=Trial for Ignition 250=Trial for Ignition Main 52=Post Purge 0= no CH source 86 Read CH Set Point Source Al 86 Read 1 =CH1 2=CH2 5=External Demand 89 Read Boiler Pump Status Al 89 Read 90 Read Cascade Master Heat Demand Al 90 Read 91 Read Burner 1 Run Time Al 91 Read 128 Read/Write CH1 Enable/Disable AV 0 Read/Write 0=Disable;1 =Enable; 129 Read/Write CH1 Set Point AV 1 Read/Write 130 Read/Write CH1 P AV 2 Read/Write 131 Read/Write CH1 I AV 3 Read/Write 132 Read/Write CH1 D AV 4 Read/Write 133 Read/Write CH2 Enable/Disable AV 5 Read/Write 0=Disable;1 =Enable; 134 Read/Write CH2 Set Point AV 6 Read/Write 135 Read/Write CH2 P AV 7 Read/Write 136 Read/Write CH2 I AV 8 Read/Write 137 Read/Write CH2 D AV 9 Read/Write 140 Read/Write CH1 PID High-P AV 12 Read/Write 141 Read/Write CH1 PID High-I AV 13 Read/Write 142 Read/Write CH1 PID High-D AV 14 Read/Write 145 Read/Write CH2 PID High-P AV 17 Read/Write 146 Read/Write CH2 PID High-I AV 18 Read/Write 147 Read/Write CH2 PID High-D AV 19 Read/Write 148 Read/Write DHW Enable/Disable AV 20 Read/Write 0=Disable;1 =Enable; 149 Read/Write DHW Set Point AV 21 Read/Write 150 Read/Write DHW PID Low-P AV 22 Read/Write 151 Read/Write DHW PID Low-I AV 23 Read/Write 152 Read/Write DHW PID Low-D AV 24 Read/Write 159 Read/Write DHW PID High-P AV 31 Read/Write 160 Read/Write DHW PID High-I AV 32 Read/Write 161 Read/Write DHW PID High-D AV 33 Read/Write 165 Read/Write Vari-Prime P-Proportional Term AV 37 Read/Write 166 Read/Write Vari-Prime I-Integral Term AV 38 Read/Write 167 Read/Write Vari-Prime D-Derivative Term AV 39 Read/Write 168 Read/Write Vari-Prime Delta T AV 40 Read/Write 174 Read/Write DHW Demand switch BV 0 Read/Write 0=No Heat Demand; 1 =Heat Demand E ivE r 175 Read/Write CH 1 Demand switch BV 1 Read/Write 0=No Heat Demand;1 =Heat Demand ti 176 Read/Write CH 2 Demand switch BV 2 Read/Write 0=No Heat Demand;1 =Heat Demand' 179 Read/Write Modbus Parameter Write Enable 0 • . 23 ASPEN BUILDING DEPARTMENT Page 42 LAARS Heating Systems 7.G Wiring Diagrams, High Voltage m W O H V ) seQ Q m Uu- X — N W N1-1 O Q c 0 �•� Z=w %�` Op O I U m ° Q _OHO 0 `o O 0,0 Q Z Lo O O,O Q Z v O 0,0 I co O O--o N O O"-o - o 0 c -uJ =w U IV w Um Y m (c,_ oQ 0 u m m 3 x X Cu- t J O rI X , �� O � 0 cn Q L LLJ CO O Z ^' w Y O U N ——— Z U p - cc a_ , X co w W N = I L IW J � se O m O m y 0 m ce V 0 J J z RECEIVED Figure 16. Wiring Diagram, 208 or 240V 1 Phase 1500 to 2500 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 43 N N X W OZ� N ZI Z= O O M ^ 0� V N O I [0 O � O O N U W LLI ZAAJ.r mr� 0_CO z N U z W / � �j� ON O.4" U w Um o^ OM 0, 0 o N 0- C 0 0 nZ 0 1 0_0 a. ., 0 ono �_ o 00 M 0 OHO N 0 O, J O 0 SZ Z CO 0 133 u u 0 0 z Lc o 0 N N M Q J J J 'Z V O JJ RECEIVED Figure 17. Wiring Diagram, 208V 3 Phase 2500 08/25/2023 ASPEN BUILDING DEPARTMENT Page 44 LAARS Heating Systems 7.G Wiring Diagrams, High Voltage (continued) N X c.O 0 ww cc, Zit c, — 0 O= QL°0 OOZ w v CV Y m oQ ohX o Z XX o W W '^ K W Y 3 oe n 2 2 m m LI d == ON ON<ZZ o=F 0 a Z §zO - `j oCV -togw 0 m O^ <o U m o Q O O u o. O 0,0 (; m O O,O ' RzN. 0 0,0 .'71_ ,o 0 0,0 zon 0 O O = v O O O 0 M O - 0,0 Li N O 0,0 J — O 3 m 0 i i m Q �'V'il- w x Z ! : j CVQ! M N : 2= hi:; w L , m § J F .0 ,Z., o O Z 8 °V \ w > m O r j20 ? O z zz � 0 � 0 .(� -0 J J J z 0 0 RECEIVED Figure 18. Wiring Diagram, 480V or 600V 3 Phase 2500 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 45 M NWpp V N — xZCr) ��w Q O Uz Y wo m O3 O 1-2 O U C° O '° o Y m r 0 X X Z 0 O Z w 8 X X Z w 0 w z ✓' w 2 O N � g U Q x xr G rn Z w —_— z Q O J x x E F- U w O LL Z a uw Kd Q 0 co O > :� U w (oN ,o� Ce w Um o w m U m ° Q ��O > O C 0 0 ' Nz-o 0 O>O a Z L0 O 0,0 R x v 0 OHO _ M O OHO � N O 0 3 N LJ LJ LJ c.o Q .— CO U Q z O U Q N V ' n I I I I 0 - J J z m O O } W 9 • l— Wm O 0Um z ( m a O m W Z J J J RECEIVED Figure 19. Wiring Diagram, 208V or480V 3 Phase 3000 08/25/2023 ASPEN BUILDING DEPARTMENT Page 46 LAARS Heating Systems 7.G Wiring Diagrams, High Voltage (continued) 0 m 0 V N h N � xZM O N 0 = Q UZ z0 Z O U m W srvvt O Z Z W ° m 0,0 ONO c)O O,O aNe a0 0,0' NAOZ1 (00 l= w oN o.1- O/0 HAOZI N-O w 0 0 81 087 •-o 0 m o^ oM 0 0 Zl 087 Lo O 0_ > 0 0 Il 087 v O O,O Cl 009/SLS 00 0 0,0 Zl 009/SLS N 0 0,0 Ll 009/SLS —0 o O m 3 m O r N u u u o Q ^ M LO O Q II I m 0 > Z w NO CIO 'ciIO m 0 �_ ( 1 1 J J Co w O J m O N 0 RECEIVED Figure 20. Wiring Diagram, 600V 3 Phase 3000 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 47 7.H Ladder Diagrams 120VAC(1PH/69Hz) GND L1 N R1 es O—I I—OGI BLOWER MOTOR OFF ON 0 1 0 POWER SWITCH L \, / e O 0 O e POWER INDICATOR e F. ® LOW VOLTAGE PANEL ri ENCLOSURE FAN 080 O ® BLOWER CONTACTOR 1120E] a BOILER/HEATER CONTROLLER e L120N] TB 120VAC \ 0 GAS VALVE lB_ 24VAC TRANSFORMER 1 24V] e LWCO e L 24N] e TB 24VAC BOILER/HEATER CONTROLLER DHW HEAT TB1-36]TT-1 TB1-38]TT-2 TB1-40]DHW (24VDC)MANDS [XI4-8 - CB1-18 fill [x14-1] CBI-17] BOILER (NOT INCLUDED) SYSTEM PUMP [81-21 - [14-4 1 O'/O [14-11] [81-22] DRY CONTACT DH PUMP [TB1-19] C14-3] OHO LX14-101 CB1-201 DRYICONTACT MRHL FLOW LWCO (OPTIONAL) LX4-1 IJ--o-- O [X4-11] [X4-2 1-0----0 CX4-121 [X4-3] 0- 0 CX4-131 \ GAS VALVE RELAY INTERLOCK HIGH GAS PRESSURE LOW GAS PRESSURE LX4-4 X4-141 LX4-5] �O [X4-15] [X4-6] O- ^O LX4-161 Ell Ell SAFETY CHAIN ? (24VDC) ARHL CONDENSATE (OPTIONAL) ] [ ] (OPTIONAL) ] [ SPARE [ xaa] 0 [ n xa- xa-a O- 50 [xaaa xa-s Jam,-' -ten' L xa-1s] MAIN VALVE LX12-31—GENSPARK ERATOR---------{X12-0] LX9-3 I-0T \/!0 LTB1-71 / IGNITORLX15-4] FLAME RECEIVErt D Figure 21. Ladder Diagram 120V 1 Phase 1250 -2000 08/25/2023 ASPEN BUILDING DEPARTMENT Page 48 LAARS Heating Systems 7. H Ladder Diagrams (continued) 208/220/240VAC(1 PH/60Hz) L1 L2 R1 IQ R1 M1 BLOWER MOTOR IQ CB O 0 0 120VAC TRANSFORMER 0 OFF ON 0 : 0 POWER SWITCH L ♦1 / e 00 0 e POWER INDICATOR a HIGH VOLTAGE PANEL ENCLOSURE FAN o 01-1 ® LOW VOLTAGE PANEL ENCLOSURE FAN 00 0 e BLOWER CONTACTOR LER/HEATER L120L1 e B CONTROLLER a L120N1 a TB 120VAC GAS VALVE e 24VAC TRANSFORMER Q1 24V] ® LWCO ® [24N] o TB 24VAC BOILER/HEATER CONTROLLER DHW HEAT TB1 36]TT-1 TB1 38]TT-2 TB1-40]DHW (24VDC)MANDS LX14-81 [B1-18el LX14-11 [B1-17] BOILER PUMP (NOT INCLUDED) SYSTEM PUMP [B1-21] [14-4] 0% [14-11] [B1-22] DRY CONTACT DHW PUMP [B1-19] [14-3] 0 O [14-10] [61-20] DRY CONTACT MRHL FLOW _ LWCO (OPTIONAL) [X4-1 i--Q1,Q [X4-11] [X4-2_-0----0 [X4-12] [X4-3] o- [X4-13] GAS VALVE RELAY INTERLOCK HIGH GAS PRESSURE LOW GAS PRESSURE [X4-4_moo [X4-14] [X4-5] O O LX4-151 [X4-6] 0- c0 [X4-16] Ll, SAFETY CHAIN (24VDC) ARHL CONDENSATE L(OPTIONAL) ] [ ] (OPTIONAL) ] [ "���r"1 SPARE [X4-7] 0 [X4-17 X4-8 CI —lr Jam` [X4-18 X4-9 J— X4-191 MAIN VALVE LX12-31—GENERATOR ---------{X12-0] IX"_ DOD [TB1-7] IGNITOR [X15-4] FLAME RECEIVED , , Figure 22. Ladder Diagram 220V 1 Phase 1500 to 2500 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 49 7. H Ladder Diagrams (continued) 208VAC(3PH/60Hz) L1 L2 L3 R1 — — O ® TB1-17 Boiler(N) POWER TB1-18 Pump(L) OUTPUTS R1 BLOWER MOTOR O TB1-19 DHW TB1-20 Pump — 21-21 System CB TB1-22 Pump O O O TB1-23 Spare 1 >DRY TB1-24 Spare 1 CONTACTS(OUTPUTS) 120VAC TRANSFORMER _____I_____ TB1-25 Spare 2 TB1-26 Spare 2 TB1-27 ALARM TB1-28 BELL OFF,,,,, ON TB1-29 System O : 0 POWER SWITCH TB1-30 Supply L TB1-31 System e OOO a POWER INDICATOR TB1-32 Return SENSOR TB1-33 DHW INPUTS e j ® HIGH VOLTAGE PANEL TB1-34 DHW ENCLOSURE FAN — — TB1-35 Outdoor e Ia• a LOW VOLTAGE PANEL ENCLOSURE FAN TB1-36 Outdoor — — TB1.37 CH1/DHW1 e O R1 O o BLOWER CONTACTOR TB1-38 CH1/DHW1 TB1-39 CH2/DHW2 HEAT BOILER/HEATER [120L] e CONTROLLER o [120N] a TB 120VAC TB1.40 CH2/DHW2 DEMANDS TB1.41 DHW/DHW3 o GAS VALVE o TB1-42 DHW/DHW3 TB1-43 Spare 1 TB1-44 Spare 1 SPARE 24VAC TRANSFORMER Tg1.45 Spare 2 INPUTS 0 , TB1.46 Spare 2 TB1-47 BMS(-) ANALOG LWCO 24V] [24N] o TB 24VAC TB1.48 0-10V(+) INPUT BOILER/HEATER TB1.49 Pump(-) ANALOG CONTROLLER — TB1-50 0-10V(+) OUTPUT TB1-51 Common RUN RELAY TB1-52 N.C. DRY CONTACTS TB1.53 N.O. TB1-35 TT-1 TB1-37 TT-2 TB1-39 DHW HEAT DEMANDS TB1.54 Common TB1-36 TT-1 TB1-38 TT-2 TB1-40 DHW (24VDC) ALARM RELAYTB1-55 N.C. DRY CONTACTS 41 BOILER PUMP TB1-56 N.O. [%14-8] [81-18 Cx14-11 [B1-17] (NOT INCLUDED) TB1.57 B RS485 CTB1-21 X14-0 OHO X14-11 TB1-22 SYSTEM PUMP TB1-58 A CASCADE ] C ] C H ] DRY CONTACT TB1-59 GND CB1-19] C14-3] O/O [14-10] C61-201 DDRY/CONTACT TB1E�B RS485 TB1-61 A BMS MRHL TB1-62_GND C C ] C ]--O=°Go C ] C ] (OPTIONAL)�� C ] %4-1 O %4-11 x4-2 %4-12 x4-3 O x4-13 ( [x1-1 Dual Element Outlet G VALVE RE AY INTERLOCK HIGH GAS PRESSURE LOW GAS PRESSURE [X1 14 10k ©u Sensor [%4-4]—OHO [%4-14] [x4-5] O-ZO [x4-151 [x4-6] 0 x4-16] [x1 2 20k SAFETY CHAIN Dual Element (24VDC) FACTORY < [x1-1 ARHL CONDENSATE INSTALLED Flue (OPTIONAL) (OPTIONAL) SPARE 0 [%4-7] 0 I.---0 [%4-17] [X4-8 1 0— [X4.18] [X4-9 1-0---0 [%4-19] [X1-15 10k '©u Sensor 20k � MAIN ��VALVE� [X1-3 [%12-31—GENERATOR—1X12-41 Ex" I (}H'�,)O [TB1-7] / [X1-13 Inlet \% Sensor X [x1-1 0 SPARK X154 FLAME . IGNITOR ROD AREC EIVED Figure 23. Ladder Diagram 208V 3 Phase 2500 08/25/2023 ASPEN BUILDING DEPARTMENT Page 50 LAARS Heating Systems 7. H Ladder Diagrams (continued) 480/575/600VAC(3PH/60Hz) L1 L2 L3 -CB R1 O 0 I M1 BLOWER MOTOR TB1-17 Boiler(N) l POWER IM ( 220VAC(1PH160Hz) TB1-18 Pump(L) lJj OUTPUTS 1y TBI-19 DHW TB1-20 Pump ,.e TB1-21_System \} \CB /1_ TB1-22 Pump • i 0 0 0 TB1-23 Spare 1 DRY �` 120VAC TRANSFORMER TBI-24 Spare 1 CONTACTS • ® TB1-25 Spare2 (OUTPUTS) TB1-26 Spare 2 TB1-27 ALARM OFF' ON TB-28 BELL l TBI-29 System 0 i 0 POWER SWITCH TB1-30 Supply L •'i TB1-31 System ® 000 0 m POWER INDICATOR TB1-32 Return i SENSOR t7a HIGH VOLTAGE PANEL TB1-33 DHW INPUTS ENCLOSURE FAN TB1-34 DHW o Lt. ® LOW VOLTAGE PANEL TBI-35 Outdoor rj1 ENCLOSURE FAN TB1-36 Outdoor TB1-37 CH1/DHW1 0 EDO ® BLOWER CONTACTOR TB1-38 CH1/DHW1 BOILER/HEATER TB1-39 CH2/DHW2 HEAT [120L] ® CONTROLLER ® [120N] C TB 120VAC TB1d0 CH2/DHW2 DEMANDS TB1-41 DHW/DHW3 ® GAS VALVE TB1-42 DHWIDHW3 TB1-43 Spare 1 24VAC TRANSFORMER TBI-44 Spare 1 SPARE 0 cry�^'`(1 ® TBI-45 Spare 2 INPUTS TB1-46 Spare 2 24V] LWCO a [24N] C TB 24VAC TB1-47 BMS(-) ANALOG TB1-48 0-10V(+) INPUT BOILER/HEATER CONTROLLER TBI-49 Pump(-) ANALOG _ _ TB1-50 0-10V(+) OUTPUT TB1-51 Common RUN RELAY r r TB1-52 N.C. DRY CONTACTS T EB1-35]TT-1 I IB1-37'TT-2 I IB1-39'DHW HEAT DEMANDS TB1-53 N.O. B1-36 -MITB1-38 TT-2 TB1-40 DHW (24VDC) TB1-54 Common ALARM RELAY TB1-55 N.C. DRY CONTACTS [%14-8] [B1-18II [%14-1] [81-17] ( R PUMP OIT INCLUDED) — — T61-56 N.O. TB1-57 B B1-21 X14-4 0/0r14-11 TB1-22 SYSTEM PUMP CASCADE ] ] L ] ] DRY CONTACT C TB1-58 A TBI-59 GND EB1-19] [X14-3] 0 0 [14-10] EB1-20] DDRY CONTACT TB1-60 B RS485 TB1-61 A BMS MRHL LWCO (OPTIONAL) [%4-1 TB1-62 GND O [X4-11] [%4-2]—OYO [X4-12] [X4-3 1 0 [X4-13] Dual Element 7 EX" GAS VALVE RELAY INTERLOCK HIGH GAS PRESSURE LOW GAS PRESSURE [X1 14 10k et Outletsen. 20k [%4-4]]•�}}�0 [%4-14] [X4-5] 0-� [X4-15] [X4.6] OTL1,O [X4-18] _ SAFETY CHAIN [X1-2 (24VDC) [XI Dual Element ARHL CONDENSATE FACTORY X1-1 [X4 7 1 (OPTIONAL) [X4-17] [X4-8] 0--(5AL) SPARE[X4-18] [X4-9]��0 [X4-19] INSTALLED 10k ©1 Flue f}`-'1 vyr7`-'1 [X1-15 ©Q Sensor 20k MAIN VALVE [XI-3 [X12-31—GENERATOR—EX124] [X9-3] o-G),0 [T81.7] .. [%1-13 Inlet [X„ Sensor SPARK [X15-4] FLAME IGNITOR ROD RECEIVED Figure 24. Ladder Diagram 480V or 600V 3 Phase 2500 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 51 208/480VAC(3PH/60Hz) L1 L2 L3 R1 TB1-17 Bailer(N) l POWER Mi TB1-18 Pump(L) OUTPUTS BLOWER MOTOR TBi-19 DHW TB1-20 Pump CB — TBi-21_System \I TB1-22 Pump TB1-23 Spare 1 (1> 120VAC TRANSFORMER COY �� TB1-24_Spare 1 CONTACTS O TB1-25 Spare 2 (OUTPUTS) TB1-26 Spare 2 TB1-27 ALARM OFFm. ON TB1-28 BELL 0 L 0 POWER SWITCH — — TB1-29 System TB1-30 Supply — — ® OOA TB1-31 System O ® POWER INDICATOR - — TB1-32 Return SENSOR ® . HIGH VOLTAGE PANEL TB1-33 DHW INPUTS ® ENCLOSURE FAN TB1-34 DHW ltT�� o LOW VOLTAGE PANEL TB1-35 Outdoor ENCLOSURE FAN TB1-36 Outdoor TB1-37 TT-1 ® 080 O ® BLOWER CONTACTOR TBi-38 TT-1 TB1-39 TT-2 HEAT [120L] 0 BOCONTROLLER 0 [120N] o TB120VAC TB1-40 TT-2 DEMANDS TB1-41 DHW — — u GAS VALVE n TB1-42 DHW TB1-43 Spare 1 \CB TB1-44 Spare 1 SPARE 1 24VAC TRANSFORMER — — INPUTS ..... CYWyi TB1-45 Spare TB1-46 Spare 2 24V] q LWCO [24N] o TB 24VAC TB1-07 BMS(-) ANALOG TB1-48 0-10V(+) INPUT BOILER/HEATER TB1-49 Pump(-) ANALOG CONTROLLER — — — TB1-50 0-19V(+) OUTPUT TB1-51 Common RUN RELAY r r TB1-52 N.C. DRY CONTACTS EBt-35] T-1 Bi-37]TT-2 1181-391 DHW HEAT DEMANDS TB1-53 N.O. TB1-36 TT-1 TBi-38 TT-2 TBi-40 DHW (24VDC) TB1-54 Common ALARM RELAY TB1-55 N.C. DRY CONTACTS [X14-81 [B1-18filo [%14-1] [131-17] BOILER PUMP (NOT INCLUDED) — — TB1-56 N.O. TB1-57 B [81-21] [14-0] l.J'/ [14-11] [T81-22] SDRV CONTACT CASCADE TB1-58 A TB1-59 GND PUMP [81-19] [14-3 1 o—/o [14-10] [TB1-20] DDRYCONTACT TB1-60 B RS485 TB1-61 A BMS MRHL TB1-62 GND FLOW LWCO (OPTIONAL) _ [X4-1 O [X4-11] [X4-2 1- 0----0 [X4-12] [X4-31-0--4-0 [X4-13] Dual Element [X1-1 GAS VALVE RELAY INTERLOCK HIGH GAS PRESSURE LOW GAS PRESSURE [X4-0]--t7� L1lo [%4-14] [X4-5 1 T o-� [%4-15] [X4-fi] � [X4-16] [Xi 14 10k 20k ©� Senlsor iet SAFETY CHAIN(24VDC) [X1-2 ARHL CONDENSATE FACTORY [X1-1 [ 1 0- Dual Element (OPTIONAL) [ ] [ 1 o-(OPTIONAL) 1 [ , `r'��n' [SPARE %4-7 %4-77 X4-8 X4-18 X4-9 JI X4-19] INSTALLED Flue [Xi-15 10k ©0 Sensor MMAII/N VAALL�VE [X1 3 20k [X12-3�GENERATOR I—I` �r V7/�%X12-4] [X9-3 Q [TB1-7] J [X1-13 • © Inlet SPARK [X15-0] FLAME , [Xi-1 Sensor IGNITOR AREC EIVED Figure 25. Ladder Diagram 208V or 480V 3 Phase 3000 08/25/2023 ASPEN BUILDING DEPARTMENT Page 52 LAARS Heating Systems 7. H Ladder Diagrams (continued) 575/600VAC(3PHl60Hz) L1 L2 L3 \CB\ R1 �' 0 O TBI-17 Boiler(N) POWER 480VAC(3PH/60Hz) — — — O O I M1 BLOWER MOTOR TB1-18 Pump(L) OUTPUTS O O TB1-IS DHW TB1-20 Pump �B GCB — TB1-21—System O 0 0 TB1-22— TB1-23 Spare 1 Pump 120VAC TRANSFORMER DRY �� TB1-24_Spare 1 CONTACTS 0 TB1-25 Spare 2 (OUTPUTS) TB1-26 Spare 2 TB1-27 ALARM OFF,„...,.., ON TB1-28—BELL 0 : 0 POWER SWITCH TB1-29 System 1_ TB1-30—Supply e OOA O e POWER INDICATOR TB1-31—System TB1-32 Retum SENSOR 0-1.l ® HIGH VOLTAGE PANEL TB1-33 DHW INPUTS ENCLOSURE FAN T — TB1-34 DHW ® T�J ® LOW VOLTAGE PANEL TB1-35 Outdoor • ENCLOSURE FAN — — TB1-36 Outdoor ® 000 O e BLOWER CONTACTOR TB1-37—TT-1 TB1-38 TT-1 C120L] a BOILER/HEATER CONTROLLER e C120N] e TB 120VAC TB1-39 TT-2 HEAT TB1.40 TT-2 DEMANDS ® GAS VALVE a TB1-41 DHW TB1.42 DHW r.n TB1A3 Spare 1 � � 24VAC TRANSFORMER TB1-44 Spare 1 SPARE 0 e TB1-45—Spare 2 INPUTS � LWCO ® 24N a TB1.46 Spare-) 24V ] C ] TB24VAC TB1A7 EMS(-) ANALOG BOILER/HEATER TB1-48 0-10V(+) INPUT CONTROLLER B1.49 Pump(-)— T_ p(-) ANALOG TB1-50 0-10V(+) OUTPUT TB1-51 Common RUN RELAY TB1-52 N.C. DRY CONTACTS TB1-35 TT-1 T81-37 TT-2 TB1-39 DHW DEMANDS TB1-53 N.O. TB1-36 TT-1 TB1-38 TT-2 TB1-40 DHW (24VDC) TB1-54 Common ALARM RELAY BOILER PUMP TB1-55—N.C. DRY CONTACTS CX14-81 CB1-18 10 CX14-11 [BI-17] (NOT INCLUDED) TBI-56 N.O. SYSTEM PUMP —TB1-57 B [81-21] [14-4] OHO [14-11] [BI-22] DRY CONTACT —TB158 A RS485 / CASCADE TB1 59 GNDCB1-19] C14-3] l /O C14-10] CB1-20] DRYCON ACT TB150 B RS485 MRHL TB1-61 A EMS FLOW LWCO (OPTIONAL) TB152 GND CX4-1�O CX4-111 CX4-2]—O------ CX4-121 CX4-3] 0 CX4-131 Dual Element GAS VALVE X LX1-1 RELAY INTERLOCK HIGH GAS PRESSURE LOW GAS PRESSURE CX4-4]—o----0 CX4-141 CX4-5] O-ZO {X4-15] CX4-6] O-Ll,�O CX4-161 CX1 14 10k © sensor SAFETY CHAIN 20k (24VDC) LX1-2 ARHL C CONDENSATE x4-18 Dual Element Cxa-7 C] 0(OPTIONAL) x4-17 0-TONAL) SPARE FACTORY Lxl-1] Cxa-a 1 O IJJrT1 ] Cxa-s] ti Cn xa-1s] INSTALLED Flue MAIN VALVE CX1-15 10k ©ii Sensor 20k CX12-31—GENERATOR—EX12-4] Cx9-3 l ° 0 LTB1-7] CX1 3 SPARK CX15-4] FLAME IGNITOR ROD IOLUKAN( S AKt. THIRD ANGLE PROJECT DECIMALS.X ±.1 FRACTIONS ± 1/8" nIAACLICInIJC ADC IN.I !Air RECEIVED Figure 26. Ladder Diagram 600V 3 Phase 3000 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 53 This page intentionally left blank RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 54 LAARS Heating Systems 7.1 Wiring Diagram v 1 a c l a LT a 8 n o3 NI w o mn ro r__/.__, r A \ r o tTAI' LO tO r` COW N ti M V Z . N en o v z a 8 m m 3 m i i - , m Y m K a0 (7 0 V' > O. cam' >i V' W •. N M 4 V1 T r; T H r; b N N CO X X X X X X X X X X X X O ,, 4 X X N W O Qarn ,720 W 8n 8R F. N . m ; .. .M. tiQ ti o . to n O? .r y M o N O O ti ` ti y Os v, a X oXf OOO X X X X X Xti X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X O m Y C g K K > (7 m K rrr c' c� 3 m > m 3 m > m O m o m m m m m m m 3 u m m z m m m O o z z m m > 0 0 3 m 0 s v E 0 r, 2220000000000000600000000000000000000000000000000 ( 6 6 6 1 ! Z o o . ,T , • R P z a o .. �.a. m 4 N N A ry N M M M M M M a V V V a T P ^a $ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 m 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 mm 3 3 m r m w f f wG, f a � w w w z o 3 3 3 3 3 3p - N V - Z w 71am O xxmmp ww - o /Oi� O a p a utY Ell.; a a a m > 0 O E00 — 33a aa a . u,� $a $n 3 �3c v n DVAbZ a0 ou ,a, xvQ `,t ¢`S a`o O 11 Z iVM 1 Wire Voltage Legend Wire Color Legend Low Voltage Black BK g 120VAC Blue BL c.9 1° High Voltage Brown BR Si Green G au O Grey GY i w Orange 0 z C}v,�,n Pink P m O Red R m Y m White W RECEIVED m Violet V Fo I a ,,, .. N I Yellow Y 08/25/2023 Figure 27. Wiring Diagram, All Sizes ASPEN BUILDING DEPARTMENT The OMNITHERM Page 55 El TB1-16:3 24L m 24VAC a V Y o TB1-12:3 24N - 24VAC f (COM) m > j + f O 5 EEl o —O ' fn. 8 0 w 3 0 m f S O O ry O z .J. Y z F (J U' - V r .i .y . NI P Z rl O mb rn Co' m m Y m 0 } m V O c 0 o z z ry N r s Eg s ELL9 X > < X n ..'n .. " 'nM n f . ry n . ry n N n m ." .V .. .'+ .�r ry ti M 1- .ai of .i . 2 r i m � co 1 x x x x x x x x x x x x x i i x x x x v x v v t t v xv v v cx v xc xv xa xa t xv c m 0 } z c m 0 > a a 3 m 3 Y � m m m m � m � s z � m m m � m z O m m m > m 3 > m 3 > -. cz Z m m 3 m 3 3 > 3 3 3 Z n v ry g ���r�r �r , �„ z m ® �H J V Li- cV 00000000000I000 [7 u a; >9 KE �i w + V Z Z V Z Z m ¢ (7 m ¢ c7 Q z¢x > ax v vmi o'�i vrvi v"'i o�i ou'i omi vrvi vmi 2 2 �c m \' lY' lY Y' s w 00000000000000 L T T 000000 I Zm ry M 1- `,-1 ' ° _ z a o C Y 52 o m ¢ tY tY a co R.f; H >cn pm vm LL F O O <_ 5G a m<r a g° V ;—(1 i� ON 0Lt. �� xm 3n wW 'aOJ u ZJ 0 V RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 56 LAARS Heating Systems SECTION 8 Control Operation 8.A The Home Screen f1 Thursday1 Rl R 12/17/1 5.-12PM Setpoint Boiler Status CSP: 180°F B: Running CH 1: 180°F Actual Rate: 100% 147°F 169°F CSP: is the Calculated Set Point CH 2: 170°F Target Rate: 100% DHW: 140°F OAT: --°F and is the Current Demand. This Flame: 13.6uA — — —y could be either the CH1 (Central Heat AT 22°F One), CH2, or the DHW (Domestic Hot Water), depending on the model Pumps SYSTEM TEMP. DHW TEMP. Boiler: On { il and the installation set up. System: Off 154°F l 147 °F DHW: Off y�J�1 E> 140°F Quick Start Configure Service Messages # 10:i `4° o 0 D 8.A.1 Home Screen Active Icons Name Icon Description Security Displays the current lock status icon. Touch the lock icon to lock or unlock the Touchscreen Display. See Section 8.B on page 58 Quick Start Provides quick access to the most commonly used parameters for easy installation. See Section 8.0 on page 59 Configure Cr• Provices access to ALL of your configurations for a detailed setup of the unit. See *" Section 8.D on page 63 Service e Allows the service technician to access the basic diagnostic and troubleshooting d information. See Section 8.E on page 88 Messages =i a) Will show an 'Exclamation Point'when there is a message. Clicking onto the Message icon will take you to the message itself. 0 The USB functionality will show the USB Icon at this location, if being used. See Section 8.F on page 93 Active o Will show icons that indicate the active parameters that are currently in Demands n o � " +� :�: demand. See Section 8.G on page 94 Navigation jot t Top left of every menu.The constant indicator of where you are as you Bar navigate into and out of the touchscreens. The alarm bell icon indicates that the units alarm has been silenced. LOCKOUTS and ERROR Codes are also show in the Navigation Bar when there is one of several unit Lockouts, Errors or Shut-downs that have occured. See SECTION 12 on page 115 P Lockout: Outlet Probe High Limit RESET Date & Thursday To change date and time, simply touch the date or time and follow the Time 03/19/17 5'12 PM directions. Section 8.D.9 on page 82 Figure 28. Active Areas of the Home Screen 0 8/2 5/2 0 2 3 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 57 8.A.2 Keypad Operations NOTE: You can always tell exactly where you have navigated tom by looking at the icons in the Navigation Bar. In this example you are in Home/Configure/Central Heat/Central Heat One / / Shows the current setting o % 1 C H 1 ® Tuesday 9 A. 'PM of the Parameter..., ] , . �� These windows will reflect the CH1 Parameters 18 allowable ranges of the parameter Enable/Disable Set Point C 100 200' n On Hysteresis Of f Hysteresis 7 8 9 4— To delete the current setting before • k.-- entering in the new value. PID Low PID High 4 5 6 . I. Max Power ` 1 2 3 II.- "Up and Down" arrows are used to increment the setting accordingly. 0 ♦.J Back Allowed ta: edit. The "Enter" button is used to accept the new value. A Typical Numeric Keypad Entry Screen. This is the indicator that will be shown when the correct password has been Remember to always save the new setting with the L~ button. entered to allow the setting to change. Min Jll CH1 n T iirsday /05/19 10:26 (e� © 12/05/19 CH1 Parameters Allowed to edit. The highlighted button (orange)shows Enable/Disable set Point 0 Disable which one is selected. Some screens , may only allow you to set one or On Hysteresis Of f Hysteresis O Enable the other, while some other screens (example: pump selection)will allow PID Low PID High you to select any or all of the options. Max Power The "Back" button jumps to the previous screen. 41 Bad A Typical Selection Screen. RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 58 LAARS Heating Systems 8.B Login to Lock / Unlock the Display Screen EiPassword Protection: To change configuration or parameters, a password is required. The control system includes three levels of password protection. Touch the 'Current Lock Status' icon at the top of the screen. 1- USER password is Ihs. This password is for'Safe'access `Non-Critical' adjustments and functions. Use this password if you want to make adjustments without fear of altering the critical configuration of the system. When unlocked in the User mode, the icon will change to In 2- INSTALLER password is 17. This password is for the trained Installer/Technician for configuration and parameter changes made during the initial setup and commissioning. Be aware that in this level of password protection, changes to the configuration setup may result in lock-outs or conflicts with your system setup, resulting in technical issues. When unlocked in the Installer mode, the icon will change to 3- OEM: Configuration and parameter changes available only to the factory. When unlocked in the OEM mode, the icon willchange to rb • RIFF- ii 08/ Monday 06/17 9:40AM 1 ' 3 4 5 6 7 8 9 0 delete y w e t t y u 1 o p i s d f g It j k I Elite/ / x ( v h it n, . U-* ii Back f rite r v()1ir I '^ttitiwt)rcl To Logout Walk Away Result Logout. If the Installer is done and wants to lock the display immediately, tap the Logout icon to exit Installer or User Mode. Exiting the Installer or User Mode will lock the unit. Walk-Away Result. The user can choose how long the control will remain unlocked after interaction with the control has stopped.After this time (default is 5 minutes), the screen will lock itself. SCR See "8.E.4 Screen (Settings Timeout)" on page 91 N SET. VEINED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Q U I C K S T A R T Page 59 8.0 Quick Start Quick Start will allow a user to configure the basic functionality of the control, without going through all of the parameters that are available. 1 Thursday 5:12 fL' a 12/17/19 • PM Setpoint Boiler Status n CSP: 180°F B: Running CH1: 180°F Actual Rate: 100% 147°F 169°F CH 2: 170°F Target Rate: 100% DHW: 140°F OAT: --°F Flame: 13.6uA AT 22°F Pumps Boiler: On System: Off DHW: Off Configure Service Messages 4titip O (Al The 6 basic functionalites are 4� fl Wednesday El 04/08/17 5: 2PM' L�L°J • Central Heat, • Domestic Hot Water, ^ DHW Outdoor Weather Anti-shortarm yl Time& Date • Outdoor Reset, AS`' O■■ ■■■■ • Warm Weather Shutdown l ■■■■ • Anti-short Cycle and • Time& Date 8.C.1 CH (Central Heat) "CH"stands for"central heat." It is used for space heating demands. On the Quick Start Screen, touch the CH thermometer icon to navigate to the CH Selection Screen There are two identical heat demands, CH1 and CH2, each with independent control algorithms and independent inputs on the input terminal strip, see "8.D Configuration"on page 63 Touching CH1 navigates to the CH1 Quick Start Screen NOTE: Grey Icons indicate ligh © 04/08/17y 5• 2 PM 'Non-Applicable' OHW Outdoor Warm Ann-short T - I ED Weather Cycle T - v ■a V ASC ;:R8/2 /2023 A PEN BUILDING DEPARTMENT Page 60 0 Q U I C K S T A R T LAARS Heating Systems 8.C.1.a CH1 (Central Heat, One) U 1 • Enable/Disable—This allows CH1 to be enabled/disabled. The default setting is Enabled. • Set Point—This is the set point temperature. Oh 0 n Wednesday C H 1 © 04/08/17 5:12PM CH1 Parameters Allowed to edit. Enable/Dhabls Set Point 0 Disable O Enable 8.C.1.b CH2 (Central Heat, Two) 12 O 0 I� CH2 To navigate to the CH2 Quick Start Screen, touch the CH2 Icon on the CH Quick Start Selection Screen. The CH2 screen will have the same look and functionality CH2 Parameters as the CH1 Screen. 8.C.2 DHW (Domestic Hot Water) • "DHW" stands for"domestic hot water." To navigate to the DHW/DHW3 Quick Start Screen, touch the DHW icon on the Quick Start Screen. The DHW/DHW3 Quick Start Screen allows adjustment of the following parameters: • Enable/Disable—This allows DHW/DHW3 to be enabled/disabled. The default setting is Enabled. • Set Point—This is the hot water set point temperature. it GO © Wednesday 5:12 04/08/17 PM DHW Parameters 1111::=2:311r Enabls/Dlaabls Set Point Disable NOTE: A DHW/DHW3 heat demand can be Enable initiated by an aquastat or sensor, while CH1-2(DHW1-2)are activated by RECEIVED aquastat only. See Section SECTION 7 on page 33 * Back 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Q U I C K S T A R T Page 61 8.C.3 Outdoor Reset CO Outdoor reset adjusts a boiler's setpoint based on outdoor air temperature. This is for boilers only, and is not used for domestic water. To navigate to the Outdoor Quick Start Screen, touch the Outdoor Icon on the Quick Start Screen. The Outdoor Quick Start Screen allows the adjustment of the following parameters: • Enable/Disable- Enables and disables the outdoor reset functionality. • Maximum Outdoor Temperature-The outdoor temperature at which the unit will use the minimum water temperature as the set point. • Minimum Outdoor Temperature-The outdoor temperature at which the unit will use the maximum water temperature as the set point. • CH1 Minimum Water Temperature-The minimum boiler CH1 outlet temperature based on the Maximum Outdoor Temperature. • CH2 Minimum Water Temperature p(1) fl Wednesday 5.12 -The minimum boiler CH2 outlet El 04/08/17 PM temperature based on the Maximum - - - Outdoor Temperature. Outdoor Parameters 0 5 Enable/Disable Max Outdoor F I I Temperature Also see Outdoor Reset Min Outdoor CH1 Min Water - 4- Curve, Figure 30 on Temperature Temperature page 67 CH2 Min Water Temperature I _ 8.C.4 Warm Weather Shut Down Warm weather shut down allows the user to disable the heating system based on outside air temperature. It is used for boilers only. To navigate to the Warm Weather Quick Start Screen, touch the Warm Weather Icon on the Quick Start Screen. The Warm Weather Quick Start Screen allows adjustment of the following parameters: • Temp Min-If the unit is in warm weather shutdown mode, it will resume normal operation when the air temperature drops to this value. • Temp Max-The temperature at which the warm weather shutdown condition will occur. • Feature Options-This allows the shutdown to be enabled or disabled.When t Wednesday 5:12 enabled, and the outside air temperature0 El 04/08/17 PM rises to the shut down (temp max)value, this tells the controller whether to shut down Warm Weather Settings 65 immediately or satisfy the current call for i heat before shutting down. Temp. Min Temp. Max 50 , "F 140 1 Feature Options 7 8 9 4-- 1 4 5 6 1 2 3RE IVED 0 4_1 INE=06.11 023 ASPEN BUILDING DEPARTMENT Page 62 0 Q U I C K S T A R T LAARS Heating Systems 8.C.5 Anti-Short Cycle ASC To navigate to the Anti-Short Cycle Quick Start Screen,touch the Anti-Short Cycle Icon on the Quick Start Screen. The Anti-Short Cycle Quick Start Screen allows adjustment of the following parameter: • Cycle Time—The amount of time after a heat demand is satisfied that the unit will wait to satisfy the next active heat demand. NOTE: Anti-Short Cycle Time does not apply to DHW/DHW3 heat demands. :0 n © Wednesday 5:11 f� 04/08/17 PM Anti Sliurt Cvi If. Tini� 60 I,, H v 4-- u dik �[ Back Aland to fit. L 8.C.6 Time & Date 1:::: To navigate to the Time & Date Quick Start Screen, touch the Time & Date area on any screen. NOTE: The Time is set in a 24 hour parameter, but displays only as a 12 hour clock with the AM / PM automatically added. The Time & Date Quick Start Screen allows adjustment of the following parameters: • Hour • Minute • Month • Day • Year RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT ri$6 The OMNITHERM CONFIGURATION Page 63 8.D Configuration ic:Itt This area of the controller allows access to all parameters available, based on the access level that is unlocked. To navigate to the Configuration Screen, touch the Configure Icon in the lower left portion of the Home Screen. � Thursday 5:• 2 f1J 12/17/19 PM Setpoint Boiler Status CSP: 180°F B: Running CH 1: 180°F Actual Rate: 100% 147°F 169°F CH2: 170°F Target Rate: 100% DHW: 140°F OAT: --°F y _ Flame: 13.6uA 6T 22"F Pumps Boiler: On System: Off DHW: • Quick Sta Configure Service Messages 0 0 O Ø4O RI c' The Configuration Screen shows all configurable parameters. n.. 1. Monday 5:12 08/06/19 PM CH DHW Outdoor Cascade Hybrid Pumps l;] :l5t j', :1 U B5.„ * Firing Rate Temp.Limits External Time&Date Misc Login -4 4 i - . 1 O.. - _ . • 14 ■.N - Q 4 [47 1 t L 08/06/19 5:12PM Anti-short Warm Temperature Priorities Cycle Weather COM Port Conversion Anti Frost 1. ,)) . . . • 2. Q �--t--i 5. "'SC RS-48S « Back 08/25/2023 ASPEN BUILDING DEPARTMENT Page 64 04,. CONFIGURATION LAARS Heating Systems 8.D.1 CH (Central Heat) "CH"stands for"central heat." It is used for space heating demands. On the Configure Screen,touch the CH thermometer icon to navigate to the CH Selection Screen I 1 I 2 There are two identical heat demands, CH1 and CH2, each with independent control algorithms and U U independent inputs on the input terminal strip, see SECTION 7 From the CH Selection Screen,touching CH1 navigates to the CH1 8.D.1.a CH1 (Central Heat, One) CH1 is one of the heat demands available.The CH1 Configuration Screen allows adjustment of the following parameters: • Enable/Disable-This allows CH1 to be enabled or disabled.The default setting is Enabled. • Set Point-This is the temperature set point for CH1. • On Hysteresis-The temperature at which the hysteresis will turn on. • Off Hysteresis-The temperature at which the hysteresis will turn off. • PID Low-controls the firing rate whenever the temperature is below the set point. Lower values in P and I will reduce overshoot. • PID High-controls the firing rate between the set point and the off Hysteresis. Higher values in P and I will reduce overshoot. • Max Power-limit the maximum power, or firing n Thursday rate, allowed by this specific heat demand.This .Il CH1 © 12/05/19 10:26 can be used to"de-rate"the boiler to reduce short cycling. CH1 Parameters Allowed to edit. l Enable/Disable Set Point O Disable i On Hysteresis Off Hysteresis P' 1 Enable PID Low PID High Max Power Set Point On the Set Point screen, use the keypad on j f1 Tuesday the right or the up/down arrows to enter the 't C I I El03/19/19 6'SOPM desired temperature set point for CH1. PressI , the"Enter" button to save the setting. Set l CH1 Parameter. 180 Point range is 40-210°F, and default is 180°F. Enable/Disable Su*Nit 100 ) °F ( 200 1 On Hysteresis r Off Hysteresis �7 I 9 PID Low PID High ' 4 Max Power L 2 3 « Back - .. EDD Allowed to eat. J,r, _�ildllt ylil. . 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM filo CONFIGURATION Page 65 8.D.1.a.1 PID Low Active below Setpoint. Note that in most cases, PID parameters will not need to be changed. The PID Parameters Screen allows adjustment to the following parameters: WO (� CHl PID A Tuesday • Proportional Gain-This value is the LOW El12/10/19 3:04 corrective action that is proportional to the CH1 Low PID Parameters 5 ` error(set point-control temperature). ,. ) 1711.111.- Proportional Gain Integral Time 1-0-1 10 J • Integral Time-This value is applied to the Derivative Time 7 g g sum of the error over a period of time. L; L. • Derivative Time-This value is applied to _ L 12 ;3 the rate of change of the error. _- - r lc Back 1- Allowed to edit. 8.D.1.a.2 PID High Active from Setpoint to Off Hysteresis of demand. • *I.) U I PID A Tuesday El HIGH 12/1o/to 3:05 • Proportional Gain-This value is the CH1 High PID Parameters corrective action that is proportional to the 7 error(set point-control temperature). Proportional Gain Integral Time , \ 0 10 • Integral Time-This value is applied to the Derivative Tillie 7 8 9 F 4' sum of the error over a period of time. 4 5 6 . • Derivative Time-This value is applied to 1 2 3 the rate of change of the error. (-) 0 ♦-' IW Back 8.D.1.b CH2- (Central Heat, Two) Additional heat demand CH2 is available and is set up in the same manner as CH1. RECEWED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 66 LAARS Heating Systems 8.D.2 DHW (Domestic Hot Water) To navigate to the DHW/DHW3 Screen, touch the DHW faucet icon on the Configure Screen. DHW/DHW3 has all the same parameters as CH1/DHW1 and CH2/DHW2 with one exception. DHW/DHW3 has the following additional parameter for adjustment: • DHW Offset—Upon a DHW/DHW3 heat demand, the unit will control the outlet temperature to the DHW Set Point plus the DHW Offset(set point+ DHW Offset). For example, with a DHW/DHW3 Set Point of n Thursday 10 51 140°F and a DHW Offset of 40°F, the unit will Min 12/05/19 control the boiler/heater outlet temperature to 180°F (140°F +40°F)to satisfy the heat DHW Parameters Allowed to eitc demand. Enable/Disable Set Point O Disable 1 On Hysteresis Of f Hysteresis 0 Enable NOTE: Only a DHW/DHW3 PID Low PID High 1/4 heat demand can be initiated by an aquastat or sensor, see DHW Offset Max Power Section SECTION 7 « Back RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM % CONFIGURATION Page 67 8.D.3 Outdoor Reset D° Outdoor reset adjusts a boiler's setpoint based on outdoor air temperature. This is for boilers only, and is not used for domestic water. The Outdoor Parameters Screen allows the adjustment of the following parameters: • Enable/Disable- Enables and disables the outdoor reset functionality. • Maximum Outdoor Temperature-The outdoor temperature at which the unit will use the minimum water temperature as the set point. • Minimum Outdoor Temperature-The outdoor temperature at which the unit will use the maximum water temperature as the set point. • CH1 Minimum Water Temperature-The minimum CH1 boiler outlet temperature based on the Maximum Outdoor Temperature. • CH2 Minimum Water Temperature-The minimum CH2 boiler outlet temperature based on the Maximum Outdoor Temperature. When there is an active outdoor4$1.0 fl Wednesday 5:12 Al © 04/08/17 PM reset condition, the set point . _ will be a calculated value (CSP) Outdoor Parameters Alowed to eat. based on the outdoor reset settings. The example in Figure Max Outdoor Enable/Disable 29 and Figure 30, shows that the Temperature O Disable Outdoor Air Temperature is 42°F. ,Min Outdoor CH1 Min Water Based on this, and without a call L Temperature ( Temperature , !, Enable for DHW, the set point (CSP) J is 160°F.As the outdoor air CH2 Min Water jtemperature increases, the CSP ` Temperature decreases. 4 Back Setpoint Boiler Status CHLSnetPint CSP: 160°F B: Running 190 and Minimum CHW1: 160°F Actual Rate: 100% 180 CHW2: 150°F Target Rate: 100% ai ut oar DHW: 140°F OAT: 42 15 170 Flame: 13.6uA 160 t - - IV Pumps w 150 Outdoor Boiler: On ~ 140 -CH2 Setpoint - CH1 System: Off = and Minimum__ DHW: Off 6 130 . i CH2 Min o. Outdoor Outdoor Figure 29. Status Window, in 120 CH2 Outdoor Reset Example 110 —1 100 -- - .1 - CH1 and CH2 use the set points on the Parameter 0 10 20 30 40 50 60 70 80 90 screen as the"Max Hot Water Temp"allowing two distinct curves based on the demand in use. Outdoor Air Temperature Figure 30. Outdoor Reset Example RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 68 LAARS Heating Systems 8.D.4 Cascade (All about Lead / Lag) An installation with two or more units may be configured for cascade operation. Up to eight units can be cascaded and controlled together. To navigate to the Cascade Screen, touch the Cascade Icon on the Configuration Screen. The Cascade Screen provides four navigation icons to configure the system for cascade operations. These navigation icons are: • Cascade—This icon navigates to the Cascade Parameters screen for hydronic boiler cascade operations. This icon is available on hydronic boilers(MGH)only. • Rotation—This icon navigates to the cascade rotation screen. • Redundancy—This icon navigates to the setup screen for cascade leader redundancy options. ' © Thursday 5:12 03/19/17 • PM NOTE: A system supply sensor Cascade Rotation Redundancy (supplied with each unit)must be installed and connected to the slang (?{?-0 Lead boiler. The Lead boiler will use this system supply sensor as the temperature control sensor for cascade operations. « Back About Cascading (Lead/ Lag) The Lead boiler uses the Base Load Value to determine when to fire the Lag units and at what firing rate. The Base Load Value should be adjusted based on the number of units installed, with a default value of 65%. Recommended base load values based on the number of units installed is shown in the table below. The Base Load Value is adjustable via the DU with installer login credentials. Boiler Qty Recommended Base Load Upon an active cascade heat demand, the Lead boiler will dictate which unit will 1 N/A fire first based on the cascade rotation logic. As the firing rate of this unit reaches 2 65% the Base Load Value, once the Min On Time timer expires, the next unit in the 3 50% sequence will fire and both units will modulate up or down together at the same firing rate in reaction to changes in heat demand. This pattern will continue until 4 40% the firing rates of all cascaded units reach the base load value. Once all units are 5 40% firing at the base load value, the firing rate can exceed the base load value, with 6 40% all units maintaining the same firing rate. Refer to the Lead/Lag figures below for additional clarification. 7 40% 8 40% With boilers firing at the same firing rate, minimum firing rates need to be taken Table 16. Recommen,, edF� , (� �`1 into consideration. Units with varying turndown ratios can be cascaded together, Base Loads, t! �M,.%� therefore, the unit with the highest minimum firing rate dictates the minimum firing rate of the total cascaded system. For example, if a 5:1 unit is cascaded with a 0 8/2 5/2 0 2 3 20:1 unit, and the 5:1 unit has reached the base load value, the 20:1 will be called to run.The 20:1 will fire at the same firing rate as the 5:1,which is limited to 20% ASPEN BUILDING DEPARTMENT The OMNITHERM .14,. CONFIGURATION Page 69 Log In Settings Parameter User Installer OEM Min Max Default Unit Base Load X X 40 100 65 Drop Load X X 20 100 20 Min On Time X X 30 600 60 Seconds Min Off Time X X 30 600 30 Seconds Table 17. Parameter Settings minimum (instead of the allowable minimum firing rate of 5%). In addition, if the Drop Load Value is higher than the minimum firing rate of the unit, the unit will turn off at the Drop Load Value and not the minimum firing rate of the unit. NOTE: The single exception to a unit turning off at the Drop Load Value in a cascade configuration is when there is only one unit running,where the single unit acts as a standalone boiler. Boilers 1 2 Low demand: The first boiler in sequence ignites and gradually increases firing rate to satify the heat demand. 30% Boilers Boilers 1 2 1 2 Increased demand: Once the first boiler reaches the Base Load Value (65%)firing rate, the second boiler ignites. After ignition, both units modulate to half of the cascade firing rate, then gradually increase the firing rate together, up to the Base 65% Load Value. 30% 30% Boilers Boilers 1 2 1 2 Approaching max demand: Once both boilers reach 65%, both units are allowed to increase firing rate (same at ioor i00% both boilers) up to maximum firing rate. 65% 65% Boilers Boilers 1 2 1 2 Decreasing demand: As the demand decreases, once the requested firing rate reaches the Drop Load Value, the second boiler turns off. 20% 20% 20% Boilers Boilers 1 2 1 2 Demand Satisfied: When the heat demand is satisfied or the temperature is at the set point+ off hysteresis, the final boiler will turn off. 20% 5 08/25/2023 Figure 31. Lead/ Lag, 2 Boilers ASPEN BUILDING DEPARTMENT Page 70 LAARS Heating Systems As the load increases: As the load decreases: • Until all units are firing, no unit is requested to exceed • As long as all units are firing—the base load value can the base load value. be exceeded, as long as all units maintain the same • Additional units are added once the Base Load Value firing rate. has been reached and the Min On Time timer has • As the firing rate decreases below the Drop Load expired. Value, the last unit to ignite turns off first(last on/first • As long as all boilers are firing, the base load value can off), following this pattern until the heat demand is be exceeded, as long as all units maintain the same satisfied and all units are off. firing rate. Units in Lead/Lag mode maintain local boiler limiting features (firing rate limiting based on outlet or flue temperature)when in Lead/Lag mode operations. 1 2 3 Low demand: The first boiler in sequence ignites and gradually increases firing rate to satify the heat demand. 30% Increased demand: Once the first boiler reaches the Base 1 2 3 1 z 3 Load Value (50%)firing rate, the second boiler ignites. After ignition, both units modulate to half of the cascade firing rate, then gradually increase the firing rate together, up to the 50% Base Load Value. 25% 25% 1 2 3 1 2 3 Increased demand: Once the first two boilers reach the Base Load Value (50%)firing rate, the third boiler ignites. After ignition, the three units modulate at 1/3 of the cascade 5o% 5o% firing rate, then gradually increase firing rate together, up to 33% 33% 33% the Base Load Value. 1 2 3 1 2 3 Approaching max demand: Once all three boilers reach 1.00% 100% 1.00% the Base Load Value (50%), all units are allowed to increase 50% 50% 50% firing rate (same at all boilers) up to maximum firing rate. 1 2 3 1 2 3 Decreasing demand: As the demand decreases, once the requested firing rate reaches the Drop Load Value, the third boiler turns off. 1 2 3 1 2 3 Continued Decreasing demand: As the demand decreases, once the requested firing rate reaches the Drop Load Value, the second boiler turns off. 20% 20% 20% 1 2 3 1 2 3 Demand Satisfied: When the heat demand is satisfied or the temperature reaches set point+ off hysteresis, the final boiler will turn off. 20% 0 8/9 5/9 0 2 3 Figure 32. Lead/ Lag, 3 Boilers ASPEN BUILDING DEPARTMENT The OMNITHERM % CONFIGURATION Page 71 About Cascading (Lead / Lag) -continued 1 2 3 4 5 6 7 8 Low demand: The first boiler in sequence ignites and gradually increases firing rate to satify the heat1 11 u u LI 11 11 demand. 30% 1 2 3 4 5 6 7 8 Increased demand: Once the first boiler reaches the Base Load Value (40%)firing rate, the second boiler 40% ll ll LI li ignites. After ignition, both units modulate to half of the cascade firing rate, then gradually increase the firing 1 2 3 4 5 6 7 8 rate together, up to the Base Load Value. 20% 20% 1 2 3 4 5 6 7 8 Increased demand: Once the first two boilers reach the Base Load Value (40%), the third boiler ignites. After ignition, all three units modulate to 1/3 1 40% 40% of the cascade firing rate, then 1 gradually increase firing rate together, 1 2 3 4 5 6 7 8 up to the Base Load Value. This pattern continues as demand increases. 27% 27% 27% li 1 2 3 4 5 6 7 8 Approaching max demand: Once all eight boilers reach the Base Load 40% 40% 40% 40% 40% 40% 40% 40% Value, all units are allowed to increase 1 firing rate (same at all boilers) up to 1 2 3 4 5 6 7 8 maximum firing rate. 100% 100% 100% 100% 100% 100% 100% 100% Figure 33. Lead/Lag, Demand Increase, 4 to 8 Boilers RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT rib,Page 72 CONFIGURATION LAARS Heating Systems 1 2 3 4 5 6 7 8 Decreasing demand: As the demand 20% 20% 20% 20% 20% 20% 20% 20% decreases, once the requested firing Tir rate reaches the Drop Load Value, the eighth boiler turns off. 1 2 3 4 5 6 7 8 23% 23% 23% 23% 23% 23% 23% 1 2 3 4 5 6 7 8 20% 20% 20% 20% 20% 20% 20% Continued decreasing demand: As 1 the demand decreases, once the 1 2 3 4 5 6 7 8 requested firing rate reaches the Drop Load Value, the seventh boiler turns off. This pattern continues as demand continues to decrease until there is a 23% 23% 23% 23% 23% 23% single boiler firing. 1 1 2 3 4 5 6 7 8 39% 1 0 mn - m 1 2 3 4 5 6 7 8 r- Demand Satisfied: When the heat 20% demand is satisfied or the temperature 1 reaches the set point+ off hysteresis, 1 2 3 4 5 6 7 8 the final boiler will turn off. _ 0 _ _ 01- - - Figure 34. Lead/ Lag, Demand Decrease, 4 to 8 Boilers RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM .14, CONFIGURATION Page 73 y4016 8.D.4.a Cascade Parameters To navigate to the Cascade Parameters Screen, touch the Cascade Icon on the Configuration Screen, then touch the Cascade Parameters Icon. The Cascade Parameters Screen allows adjustment of the following parameters: • Address—When manually addressing each boiler for cascade operations, this parameter is used to set the local boiler address. Each boiler must have a unique address. A boiler with a value of 1 is the lead boiler. Lag boilers use values 2 through 8. When automatically addressing each boiler, set the lead boiler to a value of 1. With a value of 1, the Cascade Auto-Config button is available to use, refer to this parameter below for instructions for automatic addressing the lag boilers. • Dynamic Address—This reflects the address of the local boiler after it has been manually or automatically addressed. After a boiler has been manually/automatically addressed, setting this parameter to 0 will remove the boiler from cascade operations. • Lead Settings—This button is only selectable when configured as the lead boiler. When configured as the lead boiler, touching this button navigates to the Lead boiler settings. • Lost Lead Backup Setpoint— When configured for Cascade Redundancy- Boiler Internal Set Point, this parameter is the maximum outlet temperature the local boiler is allowed to supply the system. • Lag On Hysteresis-The value below the Max Lag Temp (Max Lag Temp—Lag On Hysteresis)that the boiler will turn on to satisfy an active cascade demand based on the local boiler outlet water temperature. Max Lag Temp is set at the Lead boiler. • Lag Off Hysteresis-The value above the Max Lag Temp (Max Lag Temp + Lag Off Hysteresis)that the boiler will turn off when satisfying an active cascade heat demand based on the local boiler outlet water temperature. Max Lag Temp is set at the Lead boiler. • Cascade Auto-Config—This is only adjustable at the lead boiler. Once configured as the lead boiler, pressing this button will initiate the lead boiler to find and address all lag boilers automatically. • Cascade Release Demand -When communications with the master is lost and the lag units continue to satisfy the cascade heat demand, pressing this button will remove the heat demand. NOTE: This only applies when configured for cascade- Boiler Internal Set Point Control. • Max Lag Temp—The maximum outlet temperature each unit is allowed to supply the system. it 4 'O ?O © 12/05/19 11 42 .r. 1 T.- Cascade Parameters 1 MM. Dynamic Address 0 1 8 J Base Drop Load Lost Lead 7 r 8 9 Backup Set Point ` L_ �.. Lug On Hysteresis Lag Off Hysteresis 4 5 6 . Cascade — \ Auto-Config / Release Demand 1 2 3 / Max Lag Temp , (-) 0 Back Allowed to edit. NOTE: All boilers must be wired for cascade operations prior to ErEIVED performing Cascade Auto-Config. 08/25/2023 ASPEN BUILDING DEPARTMENT Page 74 ' CONFIGURATION LAARS Heating Systems 8.D.4.a.1 Base / Drop Load Base Load— Is the firing rate that must be achieved prior to adding another unit to satisfy the heat demand. Drop Load— As the demand for heat decreases, this is the firing rate that units turn off. The last unit to fire is the first to get turned off. Min On Time—As the demand for heat increases, this is the delay time prior to firing additional units. Min Off Time—As the demand for heat decreases, this is the delay time prior to turning off additional units. f� BASE n Thi Thursday y `ri LOAD El12/05/19 12 00 ` Cascade Base/Drop Load 65 11 Base Load Drop Load ( 40[.!. ) L % 100 Min On Time , Min Off Time IL. 9 t 4-- L_ � 1.6 iiik LI. 11. (-) 0 ik:).„ 8.D.4.b Rotation To navigate to the Cascade Rotation Screen, touch the Cascade Icon on the Configure Screen, then touch the Rotation Icon on the Cascade Configuration Screen. The Cascade Rotation Screen is a view only screen. This screen indicates how many units are connected in a cascade configuration, the order in which each unit will run, and the percent at which each unit is running. The red circle with the exclamation mark means The blue circle means that that boiler has a soft that that boiler is locked out and will need to be or auto-reset condition and the lead boiler has manually reset to return to operations. placed it later in the queue to attempt to re-fire. **1) Q� Q�<7n Tiicsda. i ti To To © 08/06/19 4:13 , Lead Addr. I Add!. 2 Addr. 3 A.dr. 4 Addr. 5 l ddr. 6 Addr. 7 Addr. 8 9 2 i i i i i i Seq. 1 Seq. 5 Seq. 2 Seq. 8 Seq. 3 Seq. 7 Seq. 4 Seq. 6 MGH MGH MGH MGH MGH OMH OMH OMH 2000 2000 2000 2000 2000 1750 1750 1750 T: 35 % T: 35 % T: 35 % T: 0 % T: 35 % T: 0 % T: 35 % T: 35 C: 35 % C: 37 % C: 34 % C: 0 % C: 35 % C: 0 % C: 35 % C: 35 % Target Cascade Power: 26 % « Back Rotation Current Cascade Power: 26 % System Temperature: 152 °F di RECEIVED ....... ..,----:-. The Rotation Setup button is found only on the boiler that is assigned as `Lead'. 0 8/2 5/2 0 2 3 ASPEN BUILDING DEPARTMENT The OMNITHERM01414CONFIGURATION Page 75 8.D.4.c.1 Rotation Setup There are two options for cascade Rotation Setup, Rotation 'Mode': 1. Run Time 2. Recurrence QO 0 ' Tucsday 413:,. Q.,) �1 Tucsday 413.,. fir Ya © 08/06/19 Mr% To L © os/o6/i� Rotation Setup Allowed to edit. Rotation Setup Allowed to edit. Rotation Mode Rotation Rotation Mode Time of Da Run Time Hrs eRun Time y 0 Run Time ORecurrence L Every X Days 411() Recurrence `•. Back In the Run Time Mode, you can adjust only the For Recurrence Mode, there are two parameters: Rotation Run Time Hours. This chooses which 1. Time of Day.You can adjust the hour and minute unit will fire first based on run time hours. of the day for rotation. 2. Every X Days.You can select how many days you want to wait until rotation, and then it will rotate at the hour and minute of the day previously selected. 8.D.4.c Redundancy '. To navigate to the Cascade Redundancy Screen, touch the Cascade Icon on the Configuration Screen, then touch the Redundancy Icon on the Cascade Configuration Screen. The Cascade Redundancy Screen allows the selection of one of three options for redundancy in cascade systems. These options are: • Boiler Internal Set Point— In a cascade configuration, upon loss of communication with the lead unit, the lag units will continue to operate in the same manner as when the communication stopped. For example, if a lag unit was firing to satisfy a cascade heat demand, it will continue to satisfy the heat demand upon loss of communication with the Leader. q • Redundant Lead— In a cascade �Q 4n Monday 8106/17 5' 2PM configuration, upon loss of ��00 communication with the lead unit, a second unit will assume lead Loss of Lead Setup responsibilities. This requires the 2nd lead to have a manual address of 2 and I a 2nd system sensor installed at that Boiler Internal Set Point unit. • Disable Redundancy— In a Redundant Lead cascade configuration, upon loss of communication with the lead unit, lag Disable Redundant v units will no longer satisfy the cascade heat demand. k3,i I. Note: The redundant lead unit should have a system sensor and be connected to the system pump (if/wh' Oli0 ) " If the lead boiler maintains communication with the lag units, but loses connectivity with the system se''or; the.' 1) cascaded units will run at the calculated set point(CSP) provided by the lead unit, but will control to the " '�'2 02 3 outlet sensor. In this mode, the firing rate can be limited using the Backup Mode Max Lag Power parame r /. ASPEN BUILDING DEPARTMENT Page 76 fit, CONFIGURATION LAARS Heating Systems 8.D.5 Pumps * The Pump Configuration Screen allows adjustment of the following 7 parameters: • Boiler Pump Control —This parameter provides the ability to set the boiler pump functionality to be: Auto—the pump will turn on automatically upon a call for heat. Always On—the pump will run continuously. Off During DHW—the pump will not turn on during a DHW heat demand. Auto/Off When Temp. Lim. Reach -When the system temperature limit is reached, the pump will turn off. • Boiler Pump Post Circulation—This parameter is the amount of time the boiler/heater pump will continue to run after a heat demand has been satisfied or after a lock-out condition has occurred. • DHW Pump Control—This parameter provides the ability to set the DHW pump functionality to be: Auto—the pump will turn on automatically upon a call for heat. Always On—the pump will run continuously. Disable—the pump will not turn on upon a DHW heat demand. • DHW Pump Post Circulation—This parameter is the amount of time the DHW pump will continue to run after a heat demand has been satisfied or after a lock-out condition has occurred. • System Pump Control —This parameter provides the ability to set the system pump functionality to be: Auto—the pump will turn on automatically upon a call for heat. Always On—the pump will run continuously, with or without a heat demand. Off During DHW—the pump will not turn on during a DHW heat demand. Disable—the pump will not turn on during a call for heat. • System Pump Post Circulation—This parameter is the amount of time the System pump will continue to run after a heat demand has been satisfied or after a lock-out condition has occurred. • Vari-Prime -Select Vari-Prime to get to the controls of the variable speed pump. Int @ n 1© 10,l l 8 i i, 5:12PM Pump Configuration Parameters Allowed to exit. Boiler Pump Boiler Pump Control ( Post Circulation Auto DHW Pump DHW Pump Control C , Post Circulation Always On System Pump 1 r System Pump Control lJ Post Circulation J Off during DHW Vari-Prime J Auto/Off When O Temp. Lim. Reach « Back RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM OA CONFIGURATION Page 77 8.D.5.a Vari-Prime The Vari-Prime Screen allows the adjustment of the following parameters: • On Delay— Upon a call for heat, once the unit ignites, this is the amount of time the unit will wait prior to modulating the pump speed. • Proportional Gain—This value is the corrective action that is proportional to the error(Set Point—Control Temperature). • Integral Time—This value is applied to the sum of the error over a period of time. • Derivative Time—This value is applied to the rate of change of the error. • Minimum Speed—This is the minimum speed to which the Vari-Prime will control the pump. Changes to min/max speed require cycling power to accept the changes, similar to changing communication protocols, see Section 8.D.10.d on page 85. • Maximum Speed—The is the maximum speed to which the Vari-Prime will control the pump. • Off Delay—Once the heat demand is satisfied, Vari-Prime will control to the maximum pump speed until the Off Delay time expires. • Delta T—Vari-Prime will control the pump to maintain this delta T(temperature rise)across the unit. 11115-4 VAR h F���.�y 5:12 PRM 10/28/16 • PM Vjri-Prini4' Par.uti.'ts'r� 60 On Delay Proportional Gain 1 ` o j s 120 Integral Time Derivative Time , 7 8 9 Minimum Speed J (Maximum Speed 4 5 6 Off Delay ( Delta T 1 3 l - J U 4-1 « Back Allowed to eat. NOTE: Vari-Prime applies only to boilers. RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 78 % CONFIGURATION LAARS Heating Systems 8.D.6 Manual Firing Rate i To navigate to the Manual Firing Rate Screen, touch the Manual Firing Rate Icon on the Configuration Screen. The Manual Firing Rate Control Screen allows the adjustment of the following parameters: • Enable/Disable- Enables and disables the manual firing rate functionality. • Fan Speed-With the manual firing rate functionality enabled, an operator can manually set the firing rate. This functionality is used for combustion adjustment purposes. With the manual firing rate functionality enabled, and the desired fan speed set, apply a call for heat at CH1/DHW1 and the boiler/heater will step through the ignition process and run at the set fan speed. • Time Out-is the setable amount of time that the operator has to adjust the Manual Firing Rate before the control will go back to automatic. It's a walkaway timer and safety feature. i-94t 4 Ei 12/05/19 1 41,,1 Manual Firing Rate Control Allowed to edit. ` l Enable Burner Firing Rate 4�® Disable ' Time Out Enable Back out I f n,p.: h l"I et` 8.D.7 Temp Limits i To navigate to the Temp Limits Screen, touch the Temp Limits Icon on the Configuration Screen. The Temp Limits Configuration Screen allows adjustment of the following parameters: • Auto Reset CH-The temperature at which the unit will shut down when outlet temperature exceeds its maximum auto reset set point. The control will automatically reset, based on the reset differential. • Manual Reset CH -The temperature at which the unit will shut down when outlet temperature exceeds its maximum manual reset set point. The control will require manual reset in this condition. • Reset Differential-The value below the Auto Reset temperature at which the unit " eil- f1 Monday will automatically reset itself and resume ft � t II 07/08/19 6'• OPM functionality. - , , , • Delta T Parameters-The MIN and MAX Temperature Limits Parameters 195 Temperature between which your system Auto Reset Manual Reset , ' will fire. Boiler Outlet Boiler Outlet 100 , "F , 210 , • Flue Limitation-Sets the flue temp (' Reset Delta T 7 8 . limitations. L Differential Parameters • Outlet Limitation Parameters-Allows Flue Limitation Outlet 4 5 G RA for the adjustment of Min and Max Outlet Limitation Temps. 1 2 3 ED 0 ?8,11/2 23 L ASPEN BUILDING DEPARTMENT The OMNITHERM irilo CONFIGURATION Page 79 8.D.7.a Delta T Parameters To navigate to the Delta T Parameters Screen, touch the Temp Limits Icon on the Configuration Screen, then touch the Delta T Parameters button on the Temperature Limits Parameters Screen. The Delta T Parameters Screen allows adjustment of the following parameters: D-T • Enable/Disable—Enables/disables the Delta T temperature functionality. o • PAR • Delta T Temp Max—The Delta T temperature at which the boiler/heater will shut down [ Delta T Parameters due to a high Delta T temperature condition. - - Enable/Disable Delta T • Delta T Temp Min—The temperature difference between the unit's inlet and outlet Temp Min at which the boiler/heater will begin to de-rate to prevent a Delta T shut down Delta T condition. Temp Max 8.D.7.b Flue Limitation Parameters To navigate to the Flue Limitation Parameters Screen, touch the Temp Limits Icon on the Configuration Screen, then touch the Flue Limitation button on the Temperature Limits Parameters Screen. The Flue Limitation Parameters Screen allows adjustment of the following parameters: • Manual Reset Flue—The temperature at which the unit will shut down due to exceeding a flue temperature manual reset condition. • Flue Temp MIN—The flue temperature at which the unit will begin to de-rate, in an attempt to prevent a manual reset high flue temperature condition. • Flue Temp Max—The flue temperature at which the unit will run at minimum firing ic LIM conditions. Flue Limitation Parameters Manual Reset Flue Flue Temp Min Flue Temp Max 8.D.7.c Outlet Limitation Parameters To navigate to the Outlet Limitation Parameters Screen, touch the Temp Limits Icon on the Configuration Screen, then touch the Outlet Limitation button on the Temperature Limits Parameters Screen. The Outlet Limitation Parameters Screen allows adjustment of the following parameters: • Outlet Temp Min—The outlet temperature at which the boiler/heater will begin to de-rate, in an attempt to prevent a manual reset high temperature outlet shut down condition. • Outlet Temp Max—The outlet temperature at which the boiler/heater will shut down on a manual reset high temperature outlet condition. OUT LIM Outlet Limitation P' a ri) Outlet Outlet Temp Min Tepp Ma: 23 ASPEN BUILDING DEPARTMENT Page 80 4%. CONFIGURATION LAARS Heating Systems 8.D.8 External iiL9 The External Configuration Screen applies to the 0-10VDC (4-20mA) analog input BMS signal, and allows adjustment of the following parameters: To navigate to the External Configuration Screen, touch the External Icon on the Configuration Screen. • Control Mode—This parameter provides the ability to either disable external control or configure the unit for Boiler Set Point or Firing Rate control mode. • Max Set Point—When the Control Mode is set to Boiler Set Point, this is the maximum value that corresponds to the Demand Max value. • Min Set Point—When the Control Mode is set to Boiler Set Point, this is the minimum value that corresponds to the Demand Min value. • Demand Max—This is the maximum value that corresponds to the control mode selected. With Firing Rate control mode selected, this is the maximum rate at which the boiler/heater will run. The unit of this parameter is %, so if the value of this parameter is 10000, or 100.00%, this equates to 10.0VDC or 20mA. • Demand Min—This is the minimum value that corresponds to the control mode selected. With Firing Rate control mode selected, this is the minimum rate at which the boiler/heater will run. The unit of this parameter is %, so if the value of this parameter is 2000, or 20.00%, this equates to 2.0VDC or 4.8mA. • Demand On—This is the threshold (VDC/mA)at which the input signal will initiate the selected control mode behavior. The unit of this parameter is %, so if the value of this parameter is 1500, or 15.00%, this equates to 1.5VDC or 4.6mA. • Demand Off—This is the threshold (VDC/mA)at which the input signal will deactivate the selected control mode behavior. The unit of this parameter is %, so if the value of this parameter is 1000, or 10.00%, this equates to 1.0VDC or 4.4mA. • Input Type—This parameter allows the user to select between voltage (0-10VDC)or current(4-20mA) input. Jumpers will need to be configured accordingly. Q• n Monday 5:12PM El 08/06/17 External Control j , Mowed to edit. Max Set Point J Q Disable Min Set Point Demand Max �1 External Set Point V Demand Min Demand On Firing Rate Demand Off Input Type l Back RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM irilo CONFIGURATION Page 81 8.D.8.a External - Remote Set Point. External (0— 10VDC or 4—20mA) • An External heat demand can be 190 initiated by a Building Management System (BMS) using a 0-10VDC or 4-20mA signal. This input can be 180 configured for Remote Set Point or Remote Firing Rate operations. 170 • With Remote Set Point selected, the unit will initiate a heat demand once the analog input signal exceeds = 160 the Demand On value. Once the demand is initiated, the analog input E signal must be lower than Demand lso Off to remove the heat demand. With an active demand, the unit will 140 locate the set point according to the analog input signal. 130 • Using the default values for Boiler Max Set Point(180°F), Boiler Min Set Point (140°F), Demand 120 Minimum (2.5VDC), Demand 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 Maximum (10.0VDC), the unit will Voltage linearize the set point, as shown in Figure 35. Figure 35. External Set Point Example 8.D.8.b External Firing Rate 100 With External Firing Rate selected, the unit will initiate a heat demand 90 once the analog input signal exceeds the Demand On value. Once the so demand is initiated, the analog input 70 signal must be lower than Demand Off to remove the heat demand. The 60 • external analog signal will activate stages as shown in Figure 36. In m 50 L this control mode, if the unit outlet temperature exceeds the Auto Reset 40 High Limit setting, the boiler will shut down and an "Auto Reset High 30 Limit" condition will appear on the Messages screen. Once the outlet 20 temperature decreases below the 10 value of(Auto Reset High Limit— Reset Differential), the boiler will turn 0 back on at the firing rate set by the 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 analog input signal. voltage Figure 36. External Firing Rate Example RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 82 LAARS Heating Systems 8.D.9 Time & Date L•��= To navigate to the Time & Date Screen, touch the Time and Date area of ANY Screen. The Time & Date Quick Start Screen allows adjustment of the following parameters: • Hour • Minute • Month • Day • Year NOTE:The Time is set in a 24 hour parameter but displays only as a 12 hour clock with the AM/PM automatically added. 8.D.10 Miscellaneous Features RI To navigate to the Miscellaneous Features Screen,touch the Miscellaneous Features Icon on the Configuration Screen. The Miscellaneous Features screen provides navigation for the following items: • Demands Priorities—To set priorities for all configured CHW or DHW heating demands. • Anti-short Cycle—To navigate to the Anti-short Cycle Configuration Screen. The higher the number, the higher the priority it is assigned. • Warm Weather—To navigate to the Warm Weather Configuration Screen. • COM Port—To navigate to the Communication Port(Modbus/BACnet MSTP)Configuration Screen. • Temperature Conversion—To navigate to the Temperature Conversion Configuration Screen. • Anti-Frost—To navigate to the Anti-Frost Configuration Screen. e Monday .+ _ ® 08/06/19 5:12PM And-short Warm Temperature Priorities Cycle Weather COM Port Conversion Anti Frost 1. 2. F 3. ABC ' 4' RS-485 5.- * Back RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM filo CONFIGURATION Page 83 1.- 2._ 3._ 8.D.10.a Demands Priorities ::— To navigate to the Demands Priorities Screen, first go to the Miscellaneous folder. At the Demands Priorities screen select each configured demand and assign a priority number. NOTE: Demands Priority is only active on the lag or stand alone boilers. Z;— n Monday Ott 4$1.:} r4: 1 3._ © 08/06/17 5:12PM Demands Priorities 2 CHI Demand ' CH2 Demand , I ^) ( 5 J Priority: 2 Priority: 3 DHW Demand Cascade Demand r' 113 �4- Priority: I i , Priority:4 J External Demand Ft , , r i 9 Priority:5 i . LI_ LLL gp �_c ) � _ Eiii______ Back ii. Allowed to edit. _....im. alt. Remember to always save the new setting with the 40..j button. L ASC 8.D.10.b Anti-Short Cycle To navigate to the Anti-Short Cycle Configuration Screen, touch the Miscellaneous Features Icon on the Configuration Screen, then touch the Anti-Short Cycle Icon on the Miscellaneous Features screen. The Anti-Short Cycle Configuration Screen allows adjustment of the following parameter: • Cycle Time—The amount of time after a heat demand is satisfied that the unit will wait to initiate the next active heat demand. NOTE: Anti-Short Cycle Time does not apply to DHW/DHW3 heat demands. itt 4 {77ASC l i Monday 5:12PM © 08106/17 Anti-Short Cycle Time i ' 60 Cycle Time ` 10 s (. 24 `_7 ` 8 �9 + 4 ` 5 Al 2 t 1 �'I 1 RECEIVED Remember to always save the new setting with the 4--1 button. 0 8/2 5/2 0 2 3 L. ASPEN BUILDING DEPARTMENT Page 84 CONFIGURATION LAARS Heating Systems 8.D.10.c Warm Weather To navigate to the Warm Weather Configuration Screen, touch the Miscellaneous Features on the Configuration Screen, then touch the Warm Weather Icon on the Miscellaneous Features screen. The Warm Weather Configuration Screen allows adjustment of the following parameters: • Temp Min—Upon an active warm weather shutdown condition,this is the temperature at which the unit will reset the shutdown condition to satisfy a heat demand. • Temp Max—This is the temperature at which the warm weather shutdown condition will occur. • Feature Options—This parameter provides the ability to either disable warm weather shutdown or upon a warm weather condition, configure the unit to shut down immediately or to shut down after the current heat demand is satisfied. • Summer Kick CH—The amount of time the unit pump is energized if it hasn't cycled for an extended period of time. • Summer Kick DHW—The amount of time the DHW pump is energized if it hasn't cycled for an extended period of time. • Summer Kick SYS—The amount of time the SYS pump is energized if it hasn't cycled for an extended period of time. • Summer Kick Period—The duration of time between heat demands that the boiler will wait before exercising the boiler, DHW, and system pumps. There are three options for Warm Weather Shutdown (WWSD). WWSD is only applicable to boilers. It is not mandatory, so it can be enabled/disabled on the WWSD configuration screen. 1 -WWSD -Shutdown Immediately When the outdoor sensor measures an outdoor air temperature that exceeds the WWSD set point, one of the following two conditions will occur. If the unit is idle, upon a call for heat,the unit will not turn on to satisfy a heat demand. If the unit is running to satisfy a call for heat,the unit will immediately shutdown. In either case, the WWSD icon will appear on the home screen. 2 -WWSD—Shutdown After Demand is Satisfied When the outdoor sensor measures an outdoor air temperature that exceeds the WWSD set point, one of the following two conditions will occur. If the unit is idle, upon a call for heat, the unit will not turn on to satisfy a heat demand, and the WWSD icon will be shown on the home screen. If the unit is running to satisfy a call for heat, the unit will satisfy the heat demand and then the WWSD shutdown icon will appear. As long as the unit is in a WWSD condition, no additional heat demands will be satisfied. 3 -WWSD—Disabled Control ignores any WWSD set points, and operates normally. E n Monday © 08/0s 1 i 5:12PM Warm Weather Shutdown 0 Temp. Min L Temp. Max F Feature Options LSumreE Kick ,1 4- Summer Kick 1 Summer Kick DHW SYS J 4 Summer Kick 1 ? Period « tsd( 4-1 � RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM filo CONFIGURATION Page 85 r+, 8.D.10.d COM Port, BMS RS,ES The control has Modbus and BACnet MSTP (RS485) protocols on board, for use with Building Management Systems. Gateways can be used for other communication protocols. To navigate to the COM Port Configuration Screen, touch the Misc Icon on the Configuration Screen, then touch the COM Port Icon on the Misc Configuration Screen. The COM Port Configuration Screen allows adjustment of the following parameters: With Modbus protocol selected, the following parameters are adjustable on this screen: • Baudrate—Modbus can be configured for the following standard baudrates: 9600, 19200, 38400, and 57600. • Address—The address of the unit on the Modbus network. • Timeout—Upon loss of communication, this is the duration of time in which the unit will wait prior to timeout conditions occurring. With BACnet protocol selected, the following parameters are adjustable on this screen: • Baudrate—BACnet can be configured for the following standard baudrates: 9600, 19200, 38400, and 76800. • Address—The address of the unit on the BACnet network. • Timeout—Upon loss of communication, this is the duration of time in which the unit will wait prior to timeout conditions occurring. • Device Model Name—The name of the unit Model on the BACnet network. • Device Object Name—The name of the unit Object on the BACnet network. • Object Instance—The object number of the unit on the BACnet network. NOTE: Changing the protocol requires a power cycle of the unit for the change to take effect. ait n Ti 7esday 5:12 © 06/05/18 PMJ COM port options Allowed to edit. Protocol Baudrate O Modbus J Address Timeout f * ) BACnet Device Device Model Name J L Object Name Object Instance Back RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 86 fil:6CONFIGURATION LAARS Heating Systems "F 8.D.10.e Temperature Conversion "C To navigate to the Temperature Conversion Configuration Screen, touch the Temperature Conversion Icon on the Miscellaneous Features screen. The Temperature Conversion Configuration Screen allows adjustment of the following parameter: • Conversion unit—This parameter can be set to Fahrenheit or Celsius. 8.D.10.f Anti-Frost To navigate to the Anti-Frost Configuration Screen, touch the Miscellaneous Features Icon on the Configuration Screen, then touch the Anti-Frost Icon on the Miscellaneous Features screen. The Anti-Frost Configuration Screen allows adjustment of the following parameters: • Anti-Frost—This parameter provides the ability to either disable anti-frost or upon an anti-frost condition, configure the unit to only turn on the pump or to turn on the pump and fire the burner. • Set Point—The unit will enter anti-frost mode when the unit's inlet sensor reads the set point minus the hysteresis value. It will leave anti-frost mode at the set point plus the hysteresis value.. • Hysteresis—This parameter is a+/-offset of the Anti-Frost Set Point used to turn on/off the Anti-Frost mode. • Pump Control—This parameter provides the ability to select which pump(s)are used in Anti-Frost Mode. The Set Point parameter is the temperature at the boiler inlet sensor to which the boiler/heater will apply the Hysteresis value to enable the Anti- Frost mode. 84 r For example, if the Set Point is 44°F, and the Hysteresis is 4,Anti-Frost will initiate at 40°F (set point—hysteresis)and then will end at 48°F (set 40 F 41 point+ hysteresis). If Pump Only or Pump and Burner mode is selected, the Pump Control parameter allows configuration of which pump(s)will run during an anti-frost condition. At least one pump must be selected, but all three pumps (unit, DHW, or System)can be selected. If Anti- AT 0 r Frost mode is active, a snow flake icon will appear above the unit inlet temperature on the home screen. As shown in Figure 37 Figure 37. Active Anti Frost Condition litt n Monday lT 1 El 8106/17 5.12PM Frost Protection Allowed to edit. Anti Frost Set Point Disabled Hysteresis Pump Control Pump Only Pump & Burner Back RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM CONFIGURATION Page 87 8.D.11 Login To navigate to the Login Screen, touch the Lock Icon on any screen. The Login Screen allows the operator to make parameter adjustments based on the level of the login credentials. See Section 8.B on page 58 itt 0 ii Monday 08/06/17 5:12PM Table 19 on page 107 indicates which parameters 1 2 3 4 5 b 7 8 9 U delete are available with each login t Y " 1' level. ., cl t g It j k I Eiit i 1 x c v b ii iii �♦ V « Back Enter your Password. Logout Lock RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 88 SERVICE BARS Heating Systems 8.E Service Screens To navigate to the Service Screen, touch the Service Icon in the lower left portion of the Home Screen. Thursday 5.12 PM 12/17/19 Setpoint Boiler Status C CSP: 180°F B: Running CH 1: 180°F Actual Rate: 100% 147°F 169"F CH2: 170°F Target Rate: 100% DHW: 140°F OAT: -- °F ._ _b Flame: 13.6uA AT 22"F Pumps Boiler: On System: Off DHW: Off Quick Start Configure Service Messages (11) *16 Monday 9:39 1 L'� 08/06/17 AM Burner Digital I/O Analog I/O Screen History Restart Factory Reset Available only to the factory or technician qualified at the OEM level. About 8.E.1 Burner (Enable/Disable BRN �l Thursday 1.56 PM EN © 12/05/19 • Burner Enable/Disable 1 Enable 0 Disable Ipr:%41 edit. RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM SERVICE Page 89 8.E.2 Digital I/O Inputs There are two screen associated with the Digital I/O: Digital I/O Screen-Inputs; Digital I/O Screen-Outputs. Navigate to the Digital I/O Screen by touching the Digital I/O Button on the Service Screen. Digital I/O Inputs: The indicator light associated with the input is green when the input is satisfied. For example, if there is adequate flow, the flow switch is satisfied, and the flow switch digital input indicator light is green. The indicator light associated with the input is red, when the input is not satisfied. For example, if the blower is off, the air proving switch is not satisfied and the air proving switch digital input indicator light is red. dot DGTL It i Thursday ay IN El 12/05/19 2:�3 O Flow Switch CH1 Low Water Cutoff CH2 ' 1 Manual Reset High Limit DHW Inputs SV2 Valve ILK filf Spare Input 1 -) High Gas Pressure Spare Input 2 Low Gas Pressure Outputs Additional High Limit Condensate Level Back Spare Safety 8.E.2.a Digital Outputs Digital I/O Outputs:The output is on,the indicator light associated with that output is green. For example, if the boiler pump is running,the boiler pump output indicator light is green. If the output is off,the indicator light associated with that output is red. For example, if there is no call for heat,the gas valves are off, and the gas valve indicator lights are red. • DGTL DGTL © Th 12/05/19 ursday 1.58 IN OUT Spare Output 1 • Spare Output 2 Outputs C) Main Gas Valve Q Boiler Pump • System Pump Q DHW Pump Run (1 Alarm « Back RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 90 k•Q SERVICE &ARS Heating Systems 8.E.3 Analog I/O Navigate to the Analog I/O Screen by touching the Analog I/O Button on the Service Screen. There are two screens associated with the Analog I/O:Analog I/O Inputs;Analog I/O Outputs. Analog I/O Input: There are three types of analog inputs; temperature sensors, flame signal, and voltage/current(VDC/ mA). Wiring of these inputs are covered in SECTION 7 NOTE: If the input is not attached, the value will be zero. ANLG A Thursday 2:05 IN © 12/05/19 Illlc t Outlet 1 Outlet 2 Fli_ie 1 F F °F "F 230 230 230 Inputs 115 115 115 115 53 53 53 63 _ 0 0 0 0 Outputs - . Back ANL nu Monday 6:10 pm ISO 07/08/19 Pump Speed Fan Speed I I00 100 Outputs 50 0 0 « Back CEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM SERVICE Page 91 8.E.4 Screen (Settings Timeout) Navigate to Screen Settings by touching the Screen Button on the Service Screen. There are two adjustable screen settings: Light Timeout and AutoLock Timeout. • Light Timeout allows the user to adjust the amount of time the touch screen backlight will remain lit after user interaction has ceased. • AutoLock Timeout allows the user to adjust the amount of time the touch screen will remain unlocked with no user interaction. SCR fl Monday SET © 08/06/17 Screen Settings J I 600 Light Timeout AutoLock 60 1 S Thou Timeout 7 ii 9 4 L.. I 4 5 r, . 1 2 3 4-1 8.E.5 History Navigate to the History Screen by touching the History Button on the Service Screen. The History Screen provides information on boiler operations and cycle counts. The control accumulates and displays the number of heat demand cycles, burner cycles, and pump cycles. It displays the 10 most recent lock-out conditions, unit temperatures, and firing statistics. BLR f1 Monday O HIS © 08/06/17 Boiler History Demand Cycles Last 10 Lockout Conditions Boiler Temp Stats DHW: 0 1. 09/21/19 0:09 Spare Satety Maximum: 116 °F CH1: 5 2 Minimum: 116 "F CH2: 0 . ... Cascade: 0 Burner Run Time Burner Cycles 5 0 hours Burner: 3 6. ... - -- Pump Cycles Boiler: 5 8. .,. DHW: 0 g. ... System: 4 10. ... Back RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 92 '8Q SERVICE &ARS Heating Systems a x. 8.E.6 Restart (Touchscreen & Recalibrate) Touching the Restart Button on the Service Screen reboots the display. If the touchscreen seems to be out of alignment, it can be recalibrated by pressing the Restart Button, promptly touching (and holding)the touch screen. Follow the calibration procedure as shown on the touch screen. 8.E.7 Factory Reset Touching the Factory Reset Button on the Service Screen resets all touch screen adjustable parameters back to the factory default setting. 8.E.8 HMI Mode. OEM only. 8.E.9 BIC Mode OEM only 8.E.10 Both Model. OEM only. 8.E.11 About About the Firmware version of the touchscreen. 8.E.12 Dev Fan OEM only. 8.E.13 Fan Settings OEM only. Monday 0.10 08/06/17 AM Burner Digital I/O Analog I/O Screen History Restart Factory Reset nivii ivioael bit.. Model Both Model I GREY= Only available to the factory service tech or About I Dev Fan 1 Fan Settings I to a technician qualified at the OEM level. Ba RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 93 8.F Messages and USB vnvv. vii Quick Start Configure Service Messages ' 8.F.1 Messages The 'Messages' icon at the bottom of the home screen 0 qi 1 I ..Z displays an 'Exclamation Point'when messages are present. Press the icon to see the message(s). 8.F.2 USB Functionality Quick Start Configure Service USB The USB port is on the back of the display.To access it, the control display can be lifted off of the front of the unit and the USB port is 0till, `X Q I found behind the touchscreen. See Figure 38.I5‘ NIEW ISI n Thursday © 03/19/17 Download Parameters 4n parameters to the boiler Upload 1 Parameters 17 parameters from the boiler yM,.. N Upload data I Data/Log from the boiler i -.M- « Back /0 When the USB icon has appeared over the Message icon, press the USB icon to access the USB menu. The following three tasks will be available: his; 'r , • Download Parameters from the boiler: During a cascade setup or a ,1 " control replacement, enter the values in one unit, to copy into the others. .$ ` • Upload Parameters from the boiler: Uploads all parameters and itd;' IT)" settings into a thumb drive for documentation purposes, or copies thesesettin s from unit to unit.9 • • Upload Data from the boiler: This is used to retrieve runtime data, andhistory. It captures all settings in a tab delimited text file, for use with spreadsheet programs. — .11 t `` I. 1 a I ;- r Figure 38. Photo of USB Slot on the back of tg ews259t2 0 2 3 display. ASPEN BUILDING DEPARTMENT Page 94 LAARS Heating Systems 8.G Active Demands The Active Demand Window indicates the status of active heat demands. t1 Thursday 5:12 f LJ © 03/19/17 PM t. J Setpoint Boiler Status C CSP: 160°F B: Running CHW1: 160°F Actual Rate: 100% 74°F 85°F CHW2: 150°F Target Rate: 100% DHW: 140°F OAT: 42°F _ y Flame: 13.6uA tT11°F Pumps Boiler: On System: Off DHW: Off Quick Start Configure Service USB rit, ig .ram . ' A black heat demand icon indicates the heat demand that is currently being satisfied. A "greyed out" heat demand icon is either lower in priority than the heat demand that is currently being satisfied, or the heat demand has reached set point, but remains active. Icon Demand rt_ 0 D CH1/2 Central Heat Demand DHW or DHW3 Volume Water Heat Demand External Demand Warm Weather Shutdown II 4 NOTE: Warm Weather Shutdown is not ' ' a heat demand. This icon indicates that a space heating demand is disabled due to high outdoor ambient temperature. ►O Cascade Table 18. Demand Examples RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 95 SECTION 9 Gas Valve Touchscreen, Menus and Descriptions 9.A About the Gas Valve This unit utiizes a Honeywell Gas Valve with a touchscreen display. Models 1250 and 1500 Gas Valve Reset —erifil% 1.\\\r, , fe- III- NI 7 ''rii Sight 1 er Il1ia, Glass .� 4I!' .[ �, *110111110—iiii I ..',;14b\i M-- �11111 Models 1750, 2000 and 2500 Gas Valve Reset citot a n IF t NV - isviftr"ft-maiiJkl '''' W .- 1 , ,--).) IAA -11 I P /_w-SIF d.L1 _ II ' imita �1 INN -- 1 Sight Glass ______ RErEIVED 0 08/25/2023 ASPEN BUILDING DEPARTMENT Page 96 LAARS Heating Systems 9.B Menu Structure (Example) Your current menu location is always shown in the NAV LOCATION. Keep an eye on this area as it will always tell you where you have navigated to. NAV LOCATION: Home o Valve 1 o Setup&Tests 0 settings • CO Q e MENU TABS: LGeneral Security Access Levels Units PRESSMOD FARMOD POC Settings Valve Proving Hi-Gas&Lo-Ga 1 •I-Air Ratio Sequence(VPS) Pressure &Ignition SELECTION AREA: —� IP Pressure Module Disabled '9,abled MENU OPTIONS: Modbus 1 f Guided Valve j f Valve Production Verify Safety j Editor l Set Up l Cloning Parameters 9.0 Gas Valve Display Navigation and Menus From Home, select Valve 1. 11111 Valve 1 Last con1111 11/01/20 111111111111 File Settings 1 Search for Valve(s)J [ Display Setup Menu Options • File Settings—files to be saved to a USB device or be loaded to the system memory from a USB device. File types that can be saved or loaded include A/F curve, valve configuration data, and log files. • Search for Valves— If for some reason Valve 1 doesn't appear on the display may need to search for th, = 1 by pressing search for Valve. `i ,_ia-a4.•,, . .„r /) • Display Setup—Allows the date and time to be set, volume and brightness adjustments, screen calibratio�8/25/2023 modbus address settings and display port setup. ASPEN BUILDING DEPARTMENT The OMNITHERM Page 97 From Valve 1, select Setup &Tests. Home o • • • • Note your ------4" location. I Valve Status II Setup&Tests 14:53 11/02/2018 — Current operation OStatus Valve 1 Valve 2 OK � � Coil f � Coil Idle Not Powered Not Powered Cycles Hours 1340 152 111 Operating Pressure Diagnostics 0.000 Psi _:LIit I1 None 0 0.000 psi fY1 Hi-Gas Disabled Selections • Valve Status -This section gives general information about valve operation and hours and cycles. • Setup&Tests—Allows for valve settings adjustment, configuration of optional components on the boiler and combustion setup of the boiler. • Diagnostics—Displays lockout history and detailed information on current valve lockouts. From Setup &Tests, Home o Valve 1 0 d • • Select Settings. Settings Valve Proving Hi-Gas&Lo-Gas Fuel-Air Ratio Sequence(VPS) Pressure &Ignition Pressure Disabled Disabled Modbus Guided Valve Valve Production Verify Safety Editor Set Up Cloning Parameters Selections Settings—The sub-menus found in `Settings'allow for configuration of the gas valve and the devices that can be incorporated into the boiler.All of these items are set at the factory, so these menus will only be needed if a valve or component is replaced or a units change is desired. When changes are made it is likely that that the changes will need to be verified before the valve will operate using the changes. Valve Proving Sequence— Not available Hi-Gas & Lo-Gas Pressure— Not available r liVEr ,,,,,..,_,,,,,, ..„. „ ., Fuel Air Ratio& Ignition—The sub-menus found in 'Fuel Air Ratio& Ignition'allow for combustion setup, ignition/2 5/2 02 3 characteristics modification, loading and saving A/F curves and valve configuratioti ASPEN BUILDING DEPARTMENT Page 98 LAARS Heating Systems You are now in the Settings menu. Home 0 Valve 1 0 Setup&Tests r Settings • • • • MENU TABS: General Security Access Levels Units EPRESSMOD FARMOD POC ' Valve Body a 1.0 inch=DN25 - LED Indication a Normal(MV1-MV2) - Valve Name a Valve 1 Valve SW Version 11.07-5759 HMI Tool SW Version 11.07.901--- Factory Data Modbus Address a 1 Baud Rate a 38400 Menu Tabs. General: This menu displays these current settings (as shown). Valve body:Allows the selection of the proper valve body size. This should be done at the factory. No adjustments necessary. Valve Name: The valve can be given a unique name if need to suit application requirements. In rare cases this may be a benefit with Building Management System. Valve SW version: Software revision of the valve. This might be needed if troubleshooting of the valve system is required for diagnostic purposes. HMI Tool SW version: Identifies the SW revision of the display that is attached to the valve. Modbus address: This address can be changed if the valve is going to be added to a BAS that will be communicating with the valve. Baud rate: Sets the communication speed of the Modbus network Security: This menu allows the installer and OEM passwords to be reset if needed. If the passwords are changed the installer/building owner is responsible for remembering the password to gain access to the system. Laars doesn't have access to the installer password once changed. Access Levels: Controls the password level access to the settings of the gas valve. This menu lists out each section of the display and assigns a password level to each. The installer can limit access to items that don't require installer level access if desired. Units: Allows the units of pressure, volume and flow rate to be set to the desired engineering units. PRESSMOD: Not available at this time. FARMOD: Lists the factory data from the FARMOD and the current status of the FARMOD. IF the FARMOD is replaced in the field the new FARMOD will need to be accepted in this menu to allow for proper combustion setup. POC: Not available RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 99 9.D Fuel Air Ratio & Ignition, Menus Click back to Home ► Valve 1 r Setup rrilsts ► Settings • • • • Setup &Tests __ 'General • -Is Units PRESSMOD FARMOD POC Valve Body a 1.0 inch . r - LED Indication a Normal(MV1-MV2) Home • Valve 1 • :?tup&Tests ID • • From Setup &Tests, select Fuel-Air Ratio &Ignition. Settings Valve Proving Hi-Gas&Lo-Gas Fuel-Air Ratio Sequence(VPS) Pressure &Ignition Pressure Module Disabled Disabled Fuel Air Ratio & Ignition has several menus that allow for combustion setup, Ignition characteristics modification, Loading and saving A/F curves and valve configurations. Home ► Valve 1 ► Setup&Tests ► l-uei-A r Ratio& Ignition • fiti0 • MENU TABS: 0, 'OEM Ignition Base Curve Correction Curve Summary Load&Save Default Pos-2 a 230.0 step S1 pre-ignition lower threshold a 80% S1 pre-ignition upper threshold a 120% 1 S1 minimum threshold a 80% Valve Actual 0.0 step/0.0% 100%=open Position o%=closed Si maximum threshold a 120% Learnt Pos.2 230.0 step/26.2% 100%=open 0%=closed 9.D.1 OEM The OEM menu sets several safety parameters that can not be adjusted in the field. The default position 2 value and Learned Pos. 2 values can be used for troubleshooting. 0 8/2 5/2 02 3 ASPEN BUILDING DEPARTMENT Page 100 LAARS Heating Systems 9.D.2 Ignition Menu The settings in the ignition tab allow the ignition characteristics of the boiler to be customized to fit the boiler application if needed. In most cases customization will not be necessary. The ignition graph shown is a representation of how the gas valve will react during the trial for ignition process. In the graph position 3 is the normal operating combustion level for the boiler at the ignition fan speed. Valve positions below position 3 indicate that the boiler combustion will be lean during ignition. Valve positions higher than position 3 indicate combustion will be rich during ignition. Home ► Valve 1 ► Setup&Tests ► gel--Air Ra_... & Ignition • • • • OEM ■Ignition Base Curve Correction Curve Summary Load &Say. Valve Actual 10o%=open Position 357.0 step 124.5 o%=closed Ramp Offset 25.0 step too%=open Learnt Pos.2 382.0 step 126.2% 0%=closed Ramp Period OA s Ignition Sequence-Valve Position Position 3 Hold On Period 2.6 s Learnt Pos.2 Ignition Period 4.0 s Ramp offs. Ignition Setpoint 90 I Ramp Period I He > I Hold On Period Record Ign. l Ignition Period Air Level J 0 1 2 3 4 5 Time[s] Ramp offset—defines the starting position of the valve during the ignition period. Sets the amount of valve steps below the learned position the valve starts from during the ignition process. This can be used to start from a lean starting point if needed. Ramp period—the amount of time it takes the valve to open through the ramp offset. This can be used to fast or slow open the valve to tune the ignition if pulsing occurs at ignition. Hold on period—during the hold on period the gas valve will not make adjustments based on feedback from the system. This allows the system to stabilize after ignition before the valve starts to make adjustments. Ignition period—The ignition period must be set to 4 seconds to match the actual ignition period of the boiler control. If this is changed to something other than 4 seconds the valve may not make the proper adjustments to the learned position for proper ignition. Ignition setpoint—defines the learned position 2 identified on the graph. When set to 100% the boiler will try to ignite with combustion settings the same as position 3. With values less than 100% the boiler will ignite in a lean condition. With values greater than 100% the boiler will ignite in a rich condition. Record Ign.Air Level—is an air proving setting at ignition that determines if the boiler has the correct amount of air flow. If the air flow is low due to blockage or other condition the valve will lockout. When first installing the boiler and getting the boiler setup the record ign. air level button should be selected, so that the proper air level can be recorded for the application. Learned Position 2—the learned position defines the A/F ratio during ignition. The learned position is defined by the settings made in the ignition menu and the installation characteristics such as gas supply pressure. The learned position will adjust automatically within a range from the default position to maintain the proper A/F ratio at ignition. During this process it is likely that the first few ignitions will be more noticeable than later ignitions. This is a normal part of the boiler adjusting to the installation. r try CAUTION: If the boiler runs through several ignitions with the gas off the Learned position will be adju$ 46..,` , "o richen up the A/F ratio. When the gas is then turned on the ignition might be more noticeable than after the boiler has gone through several ignitions and the learned position is adjusted correctly. 0 8/2 5/2 0 2 3 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 101 9.D.3 Base Curve Menu Controls the base A/F ratio curves.These values are set at the factory and can not be adjusted in the field. 9.D.4 Correction Curve Menu Allows for adjustment of the A/F ratio by the installer.To adjust the A/F curves follow the steps provided. Home ► Valve 1 ► Setup&Tests ► r o & Ignition • O • • OEM Ignition Base Curve Correction Curve Summary Load&Save Valve Actual 1ao%=open 1.6 _ Gain - min1000rpm Position 357.0step/24.5% o%=dosed 1.5 M Addition Deletion 1.4 . r _____M1.312.' _ __ Set Gain . __ _M 1.. -fir, . V V 1.000 1.0, 0.9 Lean Rich 0.8' — Enter Optional Data J 0.7 0.6 0.5 0 500 1000 1500 2000 2500 3000 3500 40004500 Modulation rate=S1 Curve Name mini 000rpm 1. Set the desired fan speed. 2. Measure the CO2 with an analyzer. 3. Start point commissioning 4. Adjust CO2 levels. Touch the lean arrows to decrease CO2. Touch Rich arrows to increase CO2. Double arrows move the CO2 richer or leaner faster than single arrows. In most cases touching the double arrows is acceptable when adjusting the CO2. 5. When the CO2 level is set correctly press set min if setting the min modulation point, press set max if setting the maximum point, or commission point if setting a point between min and max. 6. Repeat this process until five points have been setup through the modulation range. RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 102 LAARS Heating Systems 9.D.5 Summary Menu The Summary tab shows the A/F curves for the base curve and correction curve, so each curve can be reviewed. The summary tab doesn't allow the A/F curves to be adjusted, so there is not a risk of making unintended changes Home Valve 1 ► Setup&Tests ► aI-Air Rai„_ • • • •nition Base Curve Correction Curve Summary Load &Save 1.6 Gain -min1000rpm 1.5 /1.4 1.3 / 12 ''/ 11 ,/ e o u 10 0-9 0-8 ;/ 07 0-5 '/ 0 i 500 1000 1500 2000 2500 3000 3500 4000 4500 Modulation rate=S1 Valve Actual 100%=open Correction Position 357.0 step/24.5% Base Curve Table View Chart View 0%=closed Curve 9.D.6 Load & Save Menu Allows for valve configurations,A/F curves and log files to be saved or loaded from system memory. Saving the original A/F curves to memory before starting to make adjustments will allow the installer to revert back to previous A/F curves without having to make manual adjustments. When loading valve configurations or A/F curves the correction curve will be cleared, so the correction curve will need to be setup for the boiler to operate correctly. Home ► Valve 1 ► Setup&Tests ► • O • • OEM Ignition Base Curve Correction Curve Summary ■Load & Save File Name Valve 1- Save to File Saved Curves No saved curves RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 103 9.E Diagnostics Home ► Valve 1 ► • Active Faults Fault History Trends Reports Data Acquisition No fault is active Home > Valve 1 > Diagnostics—The diagnostics section is broken up into several menus and will help to diagnose issues if they occur. Active faults- lists the faults that are currently active preventing or limiting boiler function. Fault History—lists the faults that have occurred and are no longer active. Trends—variables can be added to a graph to create a trend. The time scale and variables to monitor can be selected from pulldown menus. Reports—creates a report of all of the gas valve settings,A/F curves, faults, ignition settings and OEM settings that can be used when trouble shooting the boiler. This report is something that you may be asked to collect when requesting application support, so settings and adjustments can be confirmed. Data Acquisition—Only available during BETA.Allows for the collection of data specific to valve operation for diagnostic and troubleshooting purposes. RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 104 LAARS Heating Systems 9.F Verification Menu Verification is a required process when changes to safety parameters are made. Verification forces a review of the changes made and allows those changes to be accepted. 1. When a setting is changed that requires verification a notification will appear at the bottom of the screen. Press the Verify Safety Parameters button to proceed to the verification process. 2. Select begin to start the verification process 3. Select yes if the parameter change is correct. Select No if the parameter change is incorrect. If No is selected the parameter must be changed to the correct setting and the verification process started again. 4. If yes is selected, press the reset button on the gas valve face when prompted to complete the verification process. Home ► Valve 1 ► Setup&Tests ► =uel-Air Ratio & Ignition • • ® • OEM Ignition Base Curve Correction Curve Summary Load & Save Valve Actual 100%=open Position 181.5 step/21A o%=closed Ramp Offset 35.0 step 100%=open Learnt Pos.2 216.5 step/25.5% 0%=closed Ramp Period 1.0 s Ignition Sequence-Valve Position Learnt Pos.2 Position 3 Hold On Period 2.0 s Ignition Period 4.0 s Ramp offs Ignition Setpoint 100% I Ramp Period I t x , I Hold On Period Record Ign. ( 1 < [Ignition Period Air Level l 0 1 2 3 4 5 Time Is] Safety Parameter(s)Verification Needed.You may verify them now Verify Safety or later by going to Setup&Tests->button Verify Safety Parameters. Parameters Home ► Valve 1 ► Setup&Tests ► Safety Verification Safety Parameters Verification Press Begin to start verification RECEIVEt 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 105 Home ► Valve 1 ► Setup & Tests ► Safety Verification • • • • Safety Parameters Verification Ignition setpoint=101 % Are these parameters set to proper values? Confirm in 178 seconds_ Home ► Valve 1 ► Setup&Tests ► Safety Verification Safety Parameters Verification Ignition setpoint= 100°o Press reset button at device now. Reset must be completed in 28 seconds. RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 106 LAARS Heating Systems 9.F Verification Menu (continued) Home ► Valve 1 ► Setup &Tests Safety Verification • • • • Safety Parameters Verification All safety parameters are OK 9.G Gas Valve Password & Login Menu 0 The login screen will appear with an attempt to make changes to a password protected parameter. The login screen can also be accessed by pressing the login icon at the top of the gas valve display. When entering a password select the installer tab and then enter the password LaarsOmt2018. Passwords are case sensitive. Home ► Val\ • • • • Login Valve Status & Tests Please entrn Installer password phrase. 14.66 11.02 2018 urrent operation 0 Status die OK tnct,i►� Cycles Hour ••••••••••••••••••• 1340 152 Operating Pressure •StiCS 0.000 psi Irt I 0 utrj you forget you. :Password Reset, -h-Gas ;isaWzd R c IVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 107 SECTION 10 Parameter Tables Table 19. OCH (Boiler) Parameter and Range Table (next 3 pages) OCH J''' eti- 0 Minimum Maximum Default Time&Date Hour x x x NA NA NA Minute x x x NA NA NA Month x x x NA NA NA Day x x x NA NA NA Year x x x NA NA NA CH1 _ CH1 Enable/Disable x x _ Disable Enable Enable CH1 Setpoint x x x 100 F 200 F 180 F CH1 On Hysteresis x x O F 20 F 10 F CH1 Off Hysteresis x x O F 20 F 10 F CH1 PID Low-Proportional Gain x x 0 10 5 CH1 PID Low-Integral Time x x 0 10 2 CH1 PID Low- Derivative Time x x 0 10 0 CH1 PID High-Proportional Gain x x 0 10 7 CH1 PID High-Integral Time x x 0 10 7 CH1 PID High- Derivative Time x x 0 10 0 CH1 Max Power x x 20 100 100 CH2 CH2 Enable/Disable x x Disable Enable Enable CH2 Setpoint x x x 100 F 200 F 170 F CH2 On Hysteresis x x O F 20 F 10 F CH2 Off Hysteresis x x O F 20 F 10 F CH2 PID Low-Proportional Gain x x 0 10 5 CH2 PID Low-Integral Time x x 0 10 2 CH2 PID Low-Derivative Time x x 0 10 0 CH2 PID High-Proportional Gain x x 0 10 7 CH2 PID High-Integral Time x x 0 10 7 CH2 PID High-Derivative Time x x 0 10 0 CH2 Max Power x x 20 100 100 DHW _ DHW Enable/Disable x x Disable Enable Enable _ DHW Setpoint x x x 100 F 200 F 120 F DHW On Hysteresis x x O F 60 F 10 F DHW Off Hysteresis x x O F 20 F 10 F DHW PID Low-Proportional Gain x x 0 10 5 _ DHW PID Low-Integral Time x x 0 10 2 DHW PID Low-Derivative Time x x 0 10 0 DHW PID High-Proportional Gain x x 0 10 7 _ DHW PID High-Integral Time x x 0 10 7 DHW PID High-Derivative Time x x 0 10 0 _ DHW Offset x x x OF 70 F OF DHW Max Power x x 20 100 100 Outdoor Reset Outdoor Reset Enable/Disable x x Disable Enable Disable Maximum Outdoor Temperature x x O F 120 F 65 F _ Minimum Outdoor Temperature x x -40 F 65 O F Minimum Water CH1 Temperature x x 100 F 200 F 120 F Minimum Water CH2 Temperature x x 100 F 200 F 120 F Cascade CH I _ Address ' x x 0 8 0 Dynamic Address x x 0 8 0 Base Load x x 20 100 65 Drop Load x x 20 100 20 Minimum On Time x x 30 s 600 s 60 s Minimum Off Time x x 30 s 600 s 60 s Lost Lead Backup Setpoint x x 120 F 200 F 140 F Lag On Hysteresis x x O F 20 F 10 F Lag Off Hysteresis x x O F 20 F 10 F _ Maximum Lag Temperature x x 120 F 200 F 140 F Backup Mode Max Lag Power x x 20% 100% 100% Cascade Rotation Rotation Mode x x Run Time Recurrence Run Time Run Time Hours x x 12 hrs 744 hrs 24 hrs Time of Day-Hour x x 0 23 2 Time of Day-Minutes x x 0 59 0 _ Every X Day x x 1 365 1 Cascade Redundancy Boiler Internal Loss of Lead Setup x x Disable Setpoint/ Disable Redundant LeadCEIVED Pump Configuration Auto/Always On/ Off During 08/25/2023 Boiler Pump Control x x Disable DHW/Auto-Off Auto When Temperature Reached ASPEN BUILDING DEPARTMENT Page 108 LAARS Heating Systems Boiler Pump Post Circulation x x 0 secs 600 secs 60 secs DHW Pump Control x x Disable Auto/Always On Auto (� DHW Pump Post Circulation x x 0 secs 600 secs 60 secs 0 C H System Pump Control x x Disable Auto/Always On/ Auto Off During DHW (continured) System Pump Post Circulation x x 0 secs 600 secs 60 secs Vari-Prime Pump On Delay Timer x x 0 secs 120 secs 60 secs Proportional Gain x x 0 10 5 Integral Time x x 0 10 2 Derivative Time x x 0 10 0 Pump Minimum Speed x x 0 mV 10000 mV 2000 mV Pump Maximum Speed x x 2000 mV 10000 mV _ 10000 mV Pump Off Delay Timer _x x 0 secs 600 secs 60 secs Delta Temperature x x O F 60 F 20 F Firing Rate - F Enable Burner x _ x Disable Enable Disable Fan speed x Minimum Maximum Minimum Fan speed x 0% 100% 100% Temperature Limits Auto Reset Boiler Outlet x x 100 F 210 F 195 F Manual Reset Boiler Outlet x x 100 F 210 F 200 F Reset Differential x x 1 F 30 F 20 F Manual Reset Flue x x 50 500 500 Flue Temp Min x x 50 500 450 Flue Temp Max x x 50 500 500 Delta T Maximum Temperature x x O F 70 F 60 F Delta T Enable/Disable x x Disable Enable Enable Outlet Temp Minimum x x 180 195 190 Outlet Temp Maximum x x 190 210 195 External Control Control Mode x x Disable External Setpoint Disable Maximum Setpoint x x 120 F 200 F 150 F Minimum Setpoint x x 120 F 200 F 130 F Demand Max x x 0% 100% 100% Demand Min x x 0% 100% 20% Demand On x x 0% 25% 15% Demand Off x x 0% 25% 10% Input Type x x 0-10 Volt 4-20 mA 0-10 Volt Demand Priorities CH1 Demand Priority x x 1 5 2 CH2 Demand Priority x x 1 5 3 DHW Demand Priority x x 1 5 1 Cascade Demand Priority x _ x 1 5 4 External Demand Priority x x 1 5 5 Anti-Frost Anti Frost Mode x x Disable Pump Only/Pump Pump Only &Burner Anti-Frost Setpoint x x 32 F 120 F 40 F Anti-Frost Hysteresis x x 2 F 10 F 5 F Anti-Frost Pump Control x x NA Boiler/DHW/ Boiler System Warm Weather Shutdown Temperature Minimum x x 50 F 140 F 90 F Temperature Maximum x x 50 F 140 F 95 F Shutdown Feature Options x x Disable Immediately/ Shutdown Shutdown After Immediately Demand is Satisfied Summer Kick CH x x 0 secs 600 secs 300 secs Summer Kick DHW x x 0 secs 600 secs 300 secs Summer Kick System x 1 x 0 secs 600 secs 300 secs Summer Kick Period x x 10 min 2000 min 1440 min Anti-Short Cycle Time Cycle Time I I x I x I 0 secs I 240 secs I 60 secs !Temperature Conversion Conversion Unit I I x I x I Celsius I Fahrenheit I Fahrenheit COM port Options Protocol x x Modbus BACnet BACnet Baudrate x x 9600 76800 76800 Address x x 0 255 127 Device Model Name x x NA NA NA Device Object Name x x NA NA NA Object Instance x x 0 4194303 600000RE c E ivE D Timeout I x x 0 secs 300 secs I 300 secs Service Burner Enable/Disable I I x I x I Disable I Enable I Enable Screen Settings 0 8/2 5/2 0 2 3 Light Timeout 7 x x x 60 secs 3600 secs _ 600 secs AutoLock Timeout x x x 60 secs 3600 secs 600 secs ASPEN BUILDING DEPARTMENT The OMNITHERM Page 109 Table 20. OCV(Water Heater) Parameter and Range Table (next 2 pages) e.c OCV Jye� 5'�ap OQ� Minimum Maximum Default Time&Date Hour x x x NA NA NA Minute x x x NA NA NA Month x x x NA NA NA Day x x x NA NA NA Year x x x NA NA NA DHW1 DHW1 Enable/Disable x x Disable Enable Enable DHW1 Setpoint x x x 100 F 200 F 180 F DHW1 On Hysteresis x x O F 20 F 10 F DHW1 Off Hysteresis x x O F 20 F 10 F DHW1 PID Low-Proportional Gain x x 0 10 5 DHW1 PID Low-Integral Time x x 0 10 2 DHW1 PID Low-Derivative Time x x 0 10 0 DHW1 PID High-Proportional Gain x x 0 10 7 DHW1 PID High-Integral Time x x 0 10 7 DHW1 PID High-Derivative Time x x 0 10 0 DHW1 Max Power x x 20 100 100 DHW2 DHW2 Enable/Disable x x Disable Enable Enable DHW2 Setpoint x x x 100 F 200 F 170 F DHW2 On Hysteresis x x 0 F 60 F 10 F DHW2 Off Hysteresis x x O F 20 F 10 F DHW2 PID Low-Proportional Gain x x 0 10 5 DHW2 PID Low-Integral Time x x 0 10 2 DHW2 PID Low-Derivative Time x x 0 10 0 DHW2 PID High-Proportional Gain x x 0 10 7 DHW2 PID High-Integral Time x x 0 10 7 DHW2 PID High-Derivative Time x x 0 10 0 DHW2 Max Power x x 20 100 100 DHW3 DHW3 Enable/Disable I x x Disable Enable Enable DHW3 Setpoint x x x 100 F 200 F 140 F DHW3 On Hysteresis x x O F 60 F 10 F DHW3 Off Hysteresis x x O F 20 F 10 F DHW3 PID Low-Proportional Gain x x 0 10 5 DHW3 PID Low-Integral Time x x 0 10 2 DHW3 PID Low-Derivative Time x x 0 10 0 DHW3 PID High-Proportional Gain x x 0 10 7 DHW3 PID High-Integral Time x x 0 10 7 DHW3 PID High-Derivative Time x x 0 10 0 DHW3 Offset x x x O F 80 F 0 DHW3 Max Power x x 20 100 100 Outdoor Reset(NOT Available on Volume Water Units) Cascade DHW Address x x 0 8 0 Dynamic Address x x 0 8 0 Base Load x x 20 100 65 Drop Load x x 20 100 20 Minimum On Time x x 30 s 600 s 60 s Minimum Off Time x x 30 s 600 s 60 s Lost Lead Backup Setpoint x x 100 F 200 F 140 F Lag On Hysteresis x x 0 F 60 F 10 F Lag Off Hysteresis x x O F 20 F 10 F Maximum Lag Temperature x x 100 F 200 F 140 F Cascade Rotation Rotation Mode x x Run Time Recurrence Run Time Run Time Hours x x 12 hrs 744 hrs 24 hrs Time of Day-Hour x x 0 23 2 Time of Day-Minutes x x 0 59 0 EveryDay x x 1 365 1 E d,, 1 CascadeRedundancy , Boiler Internal Loss of Lead Setup x x Disable Setpoint/ Disable 0 8/2 5/2 0 2 3 Redundant Lead Pump Configuration ASPEN BUILDING DEPARTMENT Page 110 LAARS Heating Systems OC , Auto/Always Off Duringn/ (continured) Boiler Pump Control x x Disable DHW/Auto-Off Auto When Temperature Reached Boiler Pump Post Circulation x x 0 secs 600 secs 60 secs DHW Pump Control x x Disable Auto/Always On Auto DHW Pump Post Circulation x x 0 secs 600 secs 60 secs System Pump Control x x Disable Auto/Always On/ Auto Off During DHW System Pump Post Circulation x x 0 secs 600 secs 60 secs Variprime(NOT Available on Volume Water Units1 111. AM Firing Rate Enable Burner x x Disable Enable Disable Fan speed x Minimum Maximum Minimum Fan speed x 0% 100% 100% Temperature Limits Auto Reset Boiler Outlet x x 100 F 210 F 195 F Manual Reset Boiler Outlet x x 100 F 210 F 200 F Reset Differential x x 1 F 30 F 20 F Manual Reset Flue x x 50 500 500 Flue Temp Min x x 50 500 450 Flue Temp Max x x 50 500 500 Delta T Maximum Temperature x x O F 70 F 60 F Delta T Enable/Disable x x Disable Enable Enable Outlet Temp Minimum x x 180 195 190 Outlet Temp Maximum x x 190 210 195 External Control A A I Control Mode x x Disable External Setpoint Disable Maximum Setpoint x x 120 F 200 F 150 F Minimum Setpoint x x 120 F 200 F 130 F Demand Max x x 0% 100% 100% Demand Min x x 0% 100% 20% Demand On x x 0% 25% 15% Demand Off x x 0% 25% 10% Input Type x x 0-10 Volt 4-20 mA 0-10 Volt Demand Priorities _ DHW1 Demand Priority x x 1 5 2 DHW2 Demand Priority x x 1 5 3 DHW3 Demand Priority x x 1 5 1 Cascade Demand Priority x x_ 1 5 4 External Demand Priority x x 1 5 5 Anti-Frost i I _ Anti Frost Mode x x Disable Pump Only/Pump Pump Only &Burner Anti-Frost Setpoint x x 32 F 120 F 40 F Anti-Frost Hysteresis x x 2 F 10 F 5 F Anti-Frost Pump Control x x NA Boiler/DHW/ Boiler System I Warm Weather Shutdown(NOT Available on Volume Water Units) Anti-Short Cycle Time Cycle Time I I x I x I 0 secs I 240 secs I 60 secs Temperature Conversion Conversion Unit I I x I x I Celsius I Fahrenheit I Fahrenheit Com Port Options Protocol Modbus BACnet BACnet Baudrate x x 9600 76800 76800 Address x x 0 255 127 Device Model Name x x NA NA NA Device Object Name x _ x NA NA NA Object Instance x x 0 4194303 600000 Timeout x x 0 secs 300 secs 300 secs Service Burner Enable/Disable I x I x I Disable I Enable I Enable Screen Settings Light Timeout x x x 60 secs 3600 secs 600C IVE RE AutoLock Timeout x x x 60 secs 3600 secs 600 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 111 SECTION 11 Initial startup Instructions 11.A Filling the Boiler System water level exceeds '/4 of the volume of the expansion 1. Ensure the system is fully connected. Close all tank, open the tank drain, and drain to that level. bleeding devices and open the make-up water valve. 10. Shut down the entire system and vent all radiation Allow the system to fill slowly. units and high points in the system piping, as 2. If a make-up water pump is employed, adjust the described in Step 4. pressure switch on pumping system to provide a 11. Close the make-up water valve. Check the strainer minimum of 12 psi (81.8 kPa)at the highest point in in the pressure reducing valve for sediment or debris the heating loop. from the make-up water line. Reopen the make-up 3. If a water pressure regulator is provided on the make- water valve. up water line, adjust the pressure regulator to provide 12. Check the gauge for correct water pressure and also at least 12 psi (81.8 kPa)at the highest point in the check the water level in the system. If the height heating loop. indicated above the boiler ensures that water is at the 4. Open any bleeding devices on all radiation units at highest point in the circulating loop, then the system the high points in the piping throughout the system, is ready for operation. unless automatic air bleeders are provided at those 13. Refer to local codes and the make-up water valve points. manufacturer's instructions as to whether the make-up 5. To remove all air from the heat exchanger, cycle water valve should be left open or closed. the boiler pump on and off 10 times (10 seconds on 14. Press the reset on the low pressure switch. and 10 seconds off). Then run the system and boiler pumps for a minimum of 30 minutes with the gas shut 15. After placing the unit in operation, the ignition system off. safety shutoff device must be tested. NOTE -There are three (3) air bleeds located on top of First, shut off the manual gas valve, and then call the the water manifolds. unit for heat.The main gas terminals will be energized and attempting to light for five seconds and then will Slotted Top de-energize. The unit will go into lockout after the required number of trials for ignition periods. lerN ``/1 Second, press the manual reset button on the boiler . control, or the user display, open the manual gas ` � valve and allow the unit to light. While the unit is operating, close the manual gas valve and ensure that power to the main gas valve has been cut. A WARNING 16. Within three (3) days of start up, recheck all air Failure to remove all air from the heat exchanger could bleeders and the expansion tank as described lead to property damage, severe injury or death. previously in Steps 4 and 8. 6. Open all strainers in the circulating system, check the NOTE -The installer is responsible for identifying to the operation of the flow switch (if equipped), and check owner/operator the location of all emergency shutoff for debris. If debris is present, clean out the strainers devices. to ensure proper circulation. 7. Check the liquid level in the expansion tank. With A WARNING the system full of water and under normal operating Do not use this unit if any part has been under water. pressure, the level of water in the expansion tank Immediately call a qualified service technician to inspect should not exceed 1/4 of the total with the balance the unit and to replace any part of the control system filled with air. and any gas control that may have been under water. 8. Start up the boiler following they procedure in RECEI ED this manual. Operate the entire system, includingthe pump, boiler, and radiation units for one hour. 9. Recheck the water level in the expansion tank. If the 0 8/2 5/2 0 2 3 ASPEN BUILDING DEPARTMENT Page 112 LAARS Heating Systems 11.B Initial Operation Q WARNING The initial setup must be checked before the unit is put into operation. Problems such as failure to start, rough If any odor of gas is detected, or if the gas burner ignition, strong exhaust odors, etc. can be due to improper does not appear to be functioning in a normal setup. Damage to the boiler resulting from improper setup manner, close the main gas shutoff valve. Do is not covered by the limited warranty. not shut off the power switch. Contact your heating contractor, gas company, or factory representative. 11.B.1 Initial Burner Operation 1. Using this manual, make sure the installation is 8 WARNING complete and in full compliance with the instructions and all local codes. Improper adjustment may lead to poor combustion quality, increasing the amount of carbon monoxide 2. Determine that the unit and system are filled with produced. Excessive carbon monoxide levels may water and all air has been bled from both. Open all lead to personal injury or death. valves. 3. Observe all warnings on the Operating Instructions label and turn on gas and electrical power to the unit. It may be neccesary to reset the low pressure 11.0 Shutting Down the Unit switch. This step must be performed by a qualified service person. .--r,fe• • 1. Turn off the main electrical disconnect switch. Press 2. Close all manual gas valves. to 3. If freezing is anticipated, drain the unit and be sure Reset �� to also protect the building piping from freezing.All - _ water must be removed from the heat exchanger or damage from freezing may occur. 4. The unit will enter the start sequence. The blower and pump will energize for pre-purge, then the ignition sequence will start.After all safety devices are verified, the gas valve will open. If ignition doesn't occur, turn off the unit. Check that 11.D Restarting the Unit there is proper supply of gas. Wait five minutes and start the unit again. If the system has been drained, see 11.A for instructions 5. If ignition starts normally, leave the unit turned on. on proper filling and purging. 6. After placing the unit into operation, the burner 1. Turn off the main electrical disconnect switch. safety shutoff device must be tested: 2. Close all manual gas valves. (a) Close the gas shutoff valve with the burner 3. Wait five minutes. operating. 4. Set the aquastat or thermostat to its lowest setting. (b) The flame will go out, and the blower will continue 5. Open all manual gas valves. to run for the post purge cycle.A few additional 6. Reset all safety switches (pressure switch, manual attempts to light will follow including pre-purge, reset high limit, etc.). ignitor on, valve/flame on and post purge. Ignition will not occur because the gas is turned off. The 7. Set the temperature controller to the desired ignition control will lockout. temperature setting and switch on the electrical (c) Open the gas shutoff valve. Reset the boiler control power. by pressing the Reset button on the control. Restart 8. The unit will go through a prepurge period and ignitor the unit. The ignition sequence will start again warm-up period, followed by ignition. and the burner will start. The unit will return to its previous mode of operation. RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 113 11.E Combustion setup The OmniTherm uses a sophisticated gas control system that monitors the gas air ratio and automatically adjusts to maintain proper operating conditions. On initial installation and subsequent inspections, the CO2 levels should be checked and if outside the allowable range, adjustments made. To make adjustments to the gas air ratio use the Gas valve display inside the boiler jacket and follow the process below. 11.E.1 Firing Rate for Boiler ri fU �1r E g Monday 5.I2PM CH DHW Outdoor Cascade Hybrid Pumps 95� x C7 C7 95 ► 41)) FIR 85t Firing Rate Temp.Limits External Time&Date Misc Login CJ1. a w l l Nees 1. Boiler display>Configure>Firing rate. Force the fan speed to the desired RPM by navigating through the boiler display and setting the Fan RPM. Enable fan speed and set the fan speed to desired RPM. Use the following RPMs to set combustion, 1000, 1500, 2000, 3000, 4000, and maximum fan speed. • f1 Monday 6: O • 0 07/08/19 • PM Manual Firing Rate Control Mowed to edit. Ena le Bunn, Fan Speed •. Disable Time Out Enable Back • Firing Rate. See Section 8.D.6 RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 114 LAARS Heating Systems 11.E.2 Combustion at the Gas Valve Display Home ► Valve 1 ► Setup&Tests ► • • • • OEM Ignition Base Curve ICorrection Curve Sum Load&Save Valve Actual 100%=open 16 Gain-min1000rpm Position 357.0 step/24.5% o%=closed 1-5 14 Addition Deletion 1.3 Set Gain 12 1.1 1.000 1-0 0.9 Lean Rich 0.8 Enter Optional Data 1 OJ 0.6 0-5 0 500 1000 1500 2000 2500 3000 3500 40004500 Modulation rate=S1 Curve Name mini 000rpm 2. Measure the combustion product to determine if the CO2 levels fall in the ranges listed in the table. If the CO2 level is out of range adjust the CO2 by using the gas valve display and the process below. a. Using the gas valve display Navigate to Home >Valve 1 > Settings > Fuel Air Ratio & Ignition > Correction curve. b. Login to the gas valve. See Gas valve password and login section for detailed instructions. c. Press Start point commissioning. d. Adjust CO2 levels according to Table 21. Touch lean arrows to decrease CO2. Touch Rich arrows to increase CO2. Double arrows move the CO2 richer or leaner faster than single arrows. In most cases touching the double arrows is acceptable when adjusting the CO2. e. When the CO2 level is set correctly press set min if setting the min modulation point, press set max if setting the maximum point or Add Generic if setting a point between min and max. If the point added or modified is close to another point on the correction curve the system will ask if overwriting the existing point is ok. f. In some cases it may be necessary to delete the original curve points. To do this select the Deletion tab. Select the point that should be deleted. The point selected will be highlighted on the correction curve. Press Delete point. 3. Repeat this process until all RPMs identified have been setup. Air supply temperature CO2 level F° C° Between 40 - 100 4 - 38 8.5 Below 39 4 8 Above 101 38 9 Table 21. CO2 levels at various air supply temperatures RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 115 SECTION 12 Maintenance 12.A System Maintenance 12.B Maintenance Notes Do the following once a year: Use only genuine manufacturers replacement parts. 1. Lubricate all the pumps in the system, per the A CAUTION instructions on the pump. 2. Inspect the venting system for obstruction or When servicing the controls, label all wires before leakage. Periodically clean the screens in the vent disconnecting them. Wiring errors can cause improper terminal and combustion air terminal (when used). and dangerous operation. Verify proper operation after 3. Remove and inspect the air filter. Clean with soapy servicing. water if needed. Be sure that filter is dry before re- inserting back into air filter box. Replace air filter if damaged. A WARNING 4. Keep the area around the unit clear and free of Disconnect all power to the unit before attempting any combustible materials, gasoline, or other flammable service procedures. Contact with electricity can result vapors or liquids. in severe injury or death. 5. If the unit is not going to be used for extended periods in locations where freezing normally occurs, it should be isolated from the system and NOTE - The Warranty does not cover damage caused completely drained of all water. by lack of required maintenance, lack of water flow, or 6. Low water cutoffs should be cleaned and inspected improper operating practices. annually. 7. Inspect and clean the condensate collection, float The gas and electric controls are engineered for long switch and disposal system yearly. life and dependable operation, but the safety of the 8. Ensure that the condensate is being neutralized equipment depends on their proper functioning. properly if a neutralizer is being used. 9. Inspect the flue passages and clean them using brushes or vacuums, if necessary. Sooting in 12.B.1 Burner flue passages indicates improper combustion. Check the burner for debris. Remove the blower Determine the cause of the problem and correct it. assembly to access the blower adapter plate. Remove 10. Inspect the vent system and air intake system the 4 bolts connecting the blower to the arm. Remove and ensure that all joints are sealed properly. If the blower adapter plate to access the burner. Pull the any joints need to be resealed, follow venting burner up and out. Clean the burner, if necessary, by manufacturer's instructions to clean and reseal vent blowing compressed air from the outside of the burner system. into the center of the burner, and wipe the inside of the 11. The pressure relief valve should be inspected and burner clean with glass cleaner.A dirty burner may be tested every year. an indication of improper combustion or dirty combustion 12. Once a year, the items listed below should be air. Determine the cause of the problem and correct it. inspected by a qualified service technician: If the burner gaskets are damaged, replace them when replacing the burner. a. Controls and Displays g. Flow switch b. Automatic gas valve h. Low water cutoff 12.B.2 Gas Valve / Venturi c. Air filter i. Burner The gas valve consists of a valve body that incorporates d. Pressure switches j. Heat exchanger the On/Off gas flow control and a fuel-air ratio controlled e. Blower k. Ignitor pressure regulator. It provides the air/gas ratio control f. Pump in combination with the fuel/air mixer to the unit. It is designed to operate with gas supply pressure at 4-10.5" W.C. Natural Gas. 13. Replace FARMod air filter. The filter is located in To remove the gas valve or fuel/air mixer, shut off the the top right hand corner of the boiler and can be power supply to the boiler. Turn off all manual gas accessed by removing the front upper panel. On valves connecting the boiler to the main gas supply some models this will require the removal of the line. Remove the front doors of the boiler and the top lower panel first. panels to gain access to the gas valve a 'i. aeTti `VED mixer. Disconnect the four(4)flange bolt- •,$ Do the following once every six (6) months: the gas manifold pipe to the gas valve. Remove the 1. If a strainer is employed in a pressure reducing electrical connections to the gas valve. Ren0)8e/tigq6Gt3s023 valve or the piping, clean it every six months. connecting the fuel/air mixer flange to the blower. This ASPEN BUILDING DEPARTMENT Page 116 LAARS Heating Systems allows the entire gas valve and fuel/air mixer assembly to pass through ceramic insulators and then align with be removed as an assembly to facilitate inspection and the ground rod. In order for a proper spark to form, cleaning. the mounting bracket must be grounded to the boiler After the valve has been removed, reassemble in reverse chassis. To remove the electrodes, shut off the power to order making sure to include all gaskets and 0-rings. the unit, turn off the main gas supply and open the front Turn on the manual gas valves and check for gas leaks. door of the boiler to gain access to the top portion of Turn on the main power. Place the unit in operation the unit. Remove the high tension ignition wire from the following the instructions in SECTION 11. Once the spark electrode. Remove the flame sensor wire. Remove boiler is operating, check for leaks again and confirm all the two (2) nuts and spacers holding the spark electrode fasteners are tight. assembly in place. Pull the spark ignition electrodes out Check the setup for the unit according to the instructions of the boiler slowly making sure to move the assembly in SECTION 14 as needed, so the electrodes are not bent as they are being removed. If the old assembly is determined to be 12.B.3 Main OmniTherm Controller defective, install a new electrode assembly in the reverse order, replacing the gasket if necessary. Each unit has an integrated controller that incorporates manual reset high limit control, operating temperature control, ignition control, outdoor reset control, pump a CAUTION control and many other features. If any of these features The igniters and sensors can become very hot. If are thought to be defective, please consult the factory you touch these parts accidentally, this can cause for proper troubleshooting practices before replacing a burns or injury. control. If it is necessary to replace a controller, turn off all power to the unit and shut off all manual gas valves to the 12.B.6 Blower unit. Open the front doors to the unit. Remove all wire connections from the control board. The control board The combustion air blower is a high pressure centrifugal connections are keyed to only allow connection in the blower with a variable speed motor.The blower is driven by proper location, but proper handling techniques should the control system using a PWM signal. be used to avoid damage to the wiring or connectors. If it is necessary to service, remove or replace the blower, To remove the control, press the mounting tab on each the Main Power MUST be disconnected and the main standoff while gently pulling the control board forward. gas supply to the unit must be turned off. Remove the Repeat this process for all standoffs and then remove doors. Remove the top and side jacket panels. Remove the control. To replace the control repeat the steps listed the fasteners holding the fuel/air mixer to the blower inlet. above in the reverse order making sure to connect all Remove the hardware that is connecting the blower outlet wires in the proper locations. Place the unit in operation to the unit's adapter plate. If the blower is determined to be following the steps outlined in SECTION 11. defective, replace the existing blower with a new one and assemble in the reverse order. Be sure to install all of the required gaskets and 0-rings between the blower adapter 12.B.4 Valve Control / Display plate and air/fuel mixer. Each unit has a valve control display that is used to adjust all operating parameters of the gas valve and 12.B.7 Heat Exchanger Tubes combustion characteristics of the unit. If it is necessary to replace the display turn all power off to the unit. Black carbon soot build-up on the external surfaces Remove the wire connector from the back of the display. of the heat exchanger is caused by one or more of Do NOT remove the individual wires from the connector. the following: incomplete combustion, combustion air Remove the 4 mounting screws holding the display to problems, venting problems or heater short-cycling. the mounting bracket. To replace the display, repeat the Soot buildup or other debris on the heat exchanger may steps above in the reverse order. The wiring connector restrict the flue passages. is keyed, so proper alignment and orientation is required when installing the wiring connector. Turn the power to A CAUTION the unit back on and confirm proper display operation. Black carbon soot buildup on a dirty heat exchanger 12.B.5 Spark Ignition & Flame Sensors can be ignited by a random spark or flame. To p gprevent this from happening, dampen t��lllrl� ivED Electrodes deposits with a wet brush or fine water The spark ignition and flame sensor electrode is a servicing the heat exchanger. three rod assembly. The ground rod is fastened to the 08/25/2023 mounting bracket. The spark and sensor electrodes ASPEN BUILDING DEPARTMENT The OMNITHERM Page 117 If black carbon soot buildup on the heat exchanger is 12.B.8 Gas Pressure Switches suspected, disconnect the electrical supply to the unit The high and low pressure gas switches are manual and turn off the gas supply by closing the manual gas reset switches that act to cut power to the interlock valve on the unit.Access the heat exchanger through the circuit if the gas pressure is too low or too high for proper heat exchanger shrouds. Removal of the outer baffles operation. There is a manual reset on both. may be required for proper inspection. Use a flashlight. If there is a buildup of black carbon soot or other debris on = , the heat exchanger, clean per the following: 1 1. Shut off the main power supply to the boiler. Press I rip to 2. Turn off all manual gas valves connecting the boiler to Reset (Him "I the main gas supply line. 3. Remove the blower assembly and burner from the The gas pressure switches used are integrally vent heat exchanger. limited and do not require venting to atmosphere. To 4. Disconnect the condensate drain line. remove a switch, remove the screw on the plastic 5. Attach a longer hose to the drain and run it to a housing and pull the clear cover off. Disconnect the three bucket. (3)wires from the screw terminals. Twist the switch off the pipe nipple. Reassemble in reverse order. 6. Clean the heat exchanger by brushing away any Set the low pressure gas switch to 3"w.c. light accumulations of soot and debris. Use a non Set the high pressure gas switch to 15"w.c." metallic brush with soft bristles to avoid damaging the surfaces of the heat exchanger tubes. 7. Once the tubes have been brushed clean, rinse the tubes and combustion chamber with a small amount of water to rinse all of the debris out of the bottom of the flue collector and into the longer condensate trap line which is being diverted into a separate container. a WARNING Failure to rinse the debris from the heat exchanger and temporary drain line may lead to clogged condensate lines, traps and neutralizers. Condensate pumps (if used) may also be damaged from the debris left behind, possibly causing property damage. 8. To place the unit back in operation, install all removed components in the reverse order. Be sure all gaskets are in place as the components are installed. Replace any damaged gaskets. Do not reuse damaged gaskets. 9. Place the unit into operation, checking all gas connections for leaks. Confirm all fasteners are tight. RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 118 LAARS Heating Systems SECTION 13 Troubleshooting 1 3.A Error Codes Condition Information Corrective Action Flow Switch • Insufficient flow at the outlet of the • Faulty boiler/heater pump— boiler/heater replace pump. • Auto-reset Condition • Faulty pump contactor— replace A • Annunciation —"Warning Flow contactor. switch open" on Message Screen • Blown boiler/heater pump fuse— replace fuse F14 on the control board. Low Water • Insufficient water level in the • Reset the LWCO from the reset Cut Off boiler/heater heat exchanger. button on the LWCO module. • Manual-reset Condition • Verify the system is full of water • Annunciation —on Nevi ation Bar and all air has been purged from the system. • Check for loose jumpers if the LWCO is not installed. Manual • Outlet water temperature has • Verify the system is full of water Reset High exceeded the manual reset high and all air has been purged from Limit limit setting the system. • Manual-reset Condition • Verify the boiler/heater is piped • Annunciation — on Nevi ation Bar properly into the heating system. • Check for proper pump operations. • Check the manual reset high limit set point. Auto Reset • Outlet water temperature has • Verify the system is full of water High Limit exceeded the auto reset high limit and all air has been purged from setting the system. • Auto-reset Condition • Verify the boiler/heater is piped A • Annunciation —"Warning High limit properly into the heating system. auto error" on Message Screen • Check for proper pump operations. • Check the manual reset high limit set point. Gas Valve • SV2 Gas Valve Lockout refer to gas • Refer to Gas valve Diagnostic Lockout valve display for detailed diagnostic menu active lockouts for detailed information troubleshooting information. • Annunciation — on Navi ation Bar • Annunciation —"Safety Chain open SV2 Valve ILK" on Message Screen Boiler High Gas • The high gas pressure switch has • Refer to Section 3 for Gas Pressure tripped Supply and Piping information. • Manual-reset Condition • Verify supply and manifold gas • Annunciation —on Navi ation Bar pressures satisfy installation requirements. Low Gas • The low gas pressure switch has • Refer to Section 3 for Gas Pressure tripped Supply and Piping information. RECEIVED • Manual-reset Condition • Annunciation —on Navigation Bar 0 8/2 5/2 02 3 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 119 Condition Information Corrective Action • Verify supply and manifold gas pressures satisfy installation requirements. Condensate • Condensate trap water level is high • Check condensate trap for Level • Auto-reset Condition proper drainage • Annunciation —"Warning • Check condensate trap for stuck 0 Condensate level" on Message level switch screen Outlet • Outlet probe is not connected • Check the sensor and wiring. Sensor • Manual-reset Condition Repair or replace as needed. • Annunciation —on Navi ation Bar • The outlet probe is a dual element probe with 10K and 20K thermistors. A quick test is to measure resistance and verify one resistance is double the other. Replace if necessary. • Measure the resistance of each element of the sensor and compare to the resistance table below. Replace if necessary. 10K 20K Temp Resistance Resistance (°F) (Q) (0) 68 12555 25099 86 8025 16057 104 5279 10569 122 3563 7139 140 2463 4937 158 1739 3489 176 1253 2514 194 _ 919 1845 212 685 1376 Outlet • Dual element sensor readings do • Check the sensor and wiring. Sensor Drift not agree. Repair or replace as needed. • Manual-reset Condition • The outlet probe is a dual element • Annunciation —on Navi ation Bar probe with 10K and 20K thermistors. A quick test is to measure resistance and verify one resistance is double the other. Replace if necessary. • Measure the resistance of each element of the sensor and compare to the resistance table below. Replace if necessary. 10K 20K Temp Resistance Resistance (°F) (0) (0) 68 12555 25099 (� 86 8025 1605. - 4 f' it 104 5279 1056 �l 08/25/2023 ASPEN BUILDING DEPARTMENT Page 120 LAARS Heating Systems Error Codes (continued) Condition Information Corrective Action 122 3563 7139 140 2463 4937 158 1739 3489 176 1253 2514 194 919 1845 212 685 1376 Inlet Sensor • Inlet sensor is damaged or not • Check the sensor and wiring. connected. Repair or replace as needed. • Manual-reset condition • Measure the resistance of the • Annunciation —on Navi ation Bar sensor and compare to the resistance table below. Replace if necessary. Temp Temp Resistance (°F) (°C) (0) 68 20 12555 86 30 8025 104 40 5279 122 50 3563 140 60 2463 158 70 1739 176 80 1253 194 90 919 212 100 685 Burner • Sensing flame on burner prior to • Inspect flame and wiring for Parasitic ignition. damage and continuity. Replace Flame • Manual-reset Condition if necessary. • Annunciation —on Navi ation Bar Burner Max • The maximum attempts for ignition • Verify supply and manifold gas Trials has occurred, without sensing pressures satisfy installation flame. requirements. • Manual-reset Condition • Verify the proper intake and • Annunciation —on Navi ation Bar venting. • Inspect the burner. • Check pilot and main valve wiring and operation. • Check ignition transformer electrode, flame detector wiring and position. Additional • Outlet water temperature has • Verify the system is full of water High Limit exceeded the additional high limit and all air has been purged from setting the system. • Auto-reset Condition • Verify the boiler/heater is piped • Annunciation —"Warning Additional properly into the heating system. high limit" on Message Screen • Check for proper pump operations. • Check the additional high limit set point. RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 121 Condition Information Corrective Action Stack • Stack sensor disconnected • Check the sensor and wiring. Sensor • Stack sensor wiring bad Repair or replace as needed. • Thermistor elements bad • The stack probe is a dual element probe with 100K thermistors. Measure the resistance of each element of the sensor and compare Lockout: Stack Sensor Probe to the resistance table below. Replace if necessary. Temp Temp Resistance (°F) (°C) (0) 32 0 334000 50 10 201660 68 20 125500 77 25 100000 86 30 80220 104 40 52590 122 50 35270 140 60 24160 158 70 16870 176 80 12000 194 90 8674 212 100 6369 248 120 3581 284 140 2117 320 160 1307 356 180 839 392 200 558 428 220 382 464 240 269 500 260 194 536 280 143 Flow Switch • Auto reset condition • Verify the system is full of water • Annunciation —"Flow switch error" and all air has been purged from on Message Screen the system. • Verify the boiler/heater is piped properly into the heating system. • Check to see if the pump is on and rotating in the proper direction. • Confirm all ball valves are open • Check wiring to the flow switch • Check flow switch operation to confirm paddle movement and switch operation. RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 122 LAARS Heating Systems SECTION 14 Replacement Parts Use only genuine Manufacturer replacement parts. 14.A General Information To order or purchase parts, contact your nearest manufacturers dealer or distributor. (See the back cover of this manual for the manufacturers website). 14.B Component Illustrations, Parts Lists, and Part Numbers Final Assembly (Models 1250, 1500, 1750, 2000, 2500 and 3000) 0000 11111 :i%! ......._ !ilk : ___ limil .. . . - 1*" --,. iii- ---e,41 A.slo,i!. Ula, . ___.. -. - :_ ......., . 1,40c11 ____ ,...._.___ ,,,:,.7-..---..- . . 1.,...t ,,_il iz . • \ Y" hi ..—'4"...... i.,:-. .--------. a © O CI �w 1 kfie----------„ i c--,_ - ti L ._,_—.------ eljkillil 1 O FARMOD&FILTER BACK VIEW Final Assembly Part Numbers Part Number Item No. Description 1250& 1500 1750-3000 1 Spark Generator E2338400 2 Valve Display R2082600 3 FARMod,Tubes R2084500 R2084600 i , ;- 4 Condensate Switch 40N2008 5 FARMod, Filter R2084700 0 8/2 5/2 0 2 3 6 FARMod R2084800 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 123 Jacket Assembly (Models 1250 and 1500) 6 -.41411111111111111111.1111111111111111-. 0 411 0 • • 1111 ii% III 8 0• • 0 • • ) OO4 Parts List ITEM DESCRIPTION PART NUMBER NO. 1 PANEL, JACKET, REAR 150S3005 2 PANEL, ACCESS, FLUE 150S302601 3 FILTER ASSY, AIR INTAKE 150S2610 4 PANEL, JACKET, RIGHT 150S3006 5 PANEL, JACKET, LEFT 150S3007 6 PANEL, JACKET, TOP 150S3008 7 ACCESS PANEL 150S3013 8 DOOR ASSY, LOWER 150S3024 9 DISPLAY, PANEL R2083400 10 DISPLAY, CONTROL R2082800 RECEIVED 11 POWER SWITCH R2083200 12 FILTER, AIR REPLACEMENT A2121700 08/25/2023 ASPEN BUILDING DEPARTMENT Page 124 LAARS Heating Systems Jacket Parts(Model 1750) 8 10 Oiiii 15 -. 1S 14 11 III I I� • ° .:. i ______c______, •olo 6 © .1::::1. 4 0 4111) PARIbLIST ITEM NO. DESCRIPTION PART NO. 1 DOORASSY,DISPLAY 175S3102 2 DOORASSY,LOWER 175S3104 3 FI LTE2ASSY,AIR INTAKE 250S2500 4 PANEL,JACKET,RIGHT,LOWER 175S3002 5 PANEL,JACKET,LEFT,LOWER 17553018 6 PANEL,JACKET,RIGHT,UPPER 175S3004 7 PANEL,JACKET,LEFT,UPPER 17553016 8 PANEL,JACKET,TOP 300S3005 9 ACCESS 300S3013 10 PANEL,JACKET,REAR 175S300100 11 PANEL,ACC FLUE,TOP 175S302401 12 PANEL,ACC,FLUE,BOTTOM 175S302501 13 SWITC I-I,POWER R2083200 RECEIVED 14 DISPLAY,TOUC HSCF�V,SIT R2082800 15 FILTER AI R REPLAC EM ENT A2121700 0 8/2 5/2 0 2 3 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 125 Jacket Parts(Models 2000 and 2500) 9 10 4 16 6 1Ww.'' : J 5 • � •• 11 3 ' • U 8 C---------1---. • • ..-----0,........s. • 14 • 00,[1--------- • 15 6 13 ® . PARIS LIST ITEM NO. DE9C;RIPIION PART NO. 1 DOORASSY,LOWER 300S3104 2 DOORASSY,DISPLAY 300S3102 3 DOORAMCMBLYUFPBR 250S3023 4 FILT6AY,AIR INTAKE 250500 5 PANEL,JACKET,LET,LOWER 300S3018 6 PANEL,SIDE,UFPERLE=T 250S3021 7 PANE_,JACKET,RIGHT,LOWER 300S3002 8 PANE_,SIDE,UPPBRRGHT 250S3004 9 PANE_,JACKET,TOP 300S3005 10 PANE_,JACKET,REAR 250S300100 11 PANE_,ACCESS,FLUE,TOP 2505302401 12 PANE_,ACCESS FLUE,BOTTOM 2505302501 13 ACCESS PAN B_ 300S3013 RC�EWED 14 DISPLAY,SIT R2082800 1.. 15 SWITCH,POWER R2083200 0 8/2 5/2 0 2 3 ASPEN BUILDING DEPARTMENT Page 126 LAARS Heating Systems Jacket Parts (Model 3000) 9 10 4 16 6 411111111111 • •o411 s .•�� 3 \�� 0 8 %10 • 14 41111 PARTS LIST ITEM NO. DESCRIPTION PART NO. 1 DOOR ASSY, LOWER 300S3104 2 DOOR ASSY, DISPLAY 300S3102 3 DOOR ASSEMBLY UPPER 300S3118 4 FILTER ASSY, AIR INTAKE 300S2500 5 PANEL, JACKET, LEFT, LOWER 300S3018 6 PANEL, SIDE, UPPER LEFT 300S3016 7 PANEL, JACKET, RIGHT, LOWER 300S3002 8 PANEL, SIDE, UPPER RIGHT 300S3004 9 PANEL, JACKET, TOP 300S3005 10 PANEL, JACKET, REAR 300S3001 11 PANEL, ACCESS, FLUE, TOP 300S3019 12 PANEL, ACCESS, FLUE, BOTTOM 300S3020 13 ACCESS PANEL 300S3013 14 DISPLAY, SIT R2082800 15 SWITCH, POWER R2083200 RECEIVED 16 FILTER, AIR A2121700 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 127 Control Panel Assembly (Models 1250, 1500, 1750, 2000, 2500 and 3000) © 411 o ® °J " Ate° Q) 1 4c) 6 y ® CO III ° �. ❑ E po 1 cI E ° 00 0: a n� 11- - pi 61 cv 2Fi 111 cE O a� a� jaI P. 0 0 0 0 0 0 00., 0 4 PARTS LIST ITEM DESCRIPTION PART NO. NO. 1 SWITCH, CUTOFF, LOW WATER E2387600 2 BOARD, CONTROL R2082700 3 TRANSFORMER ASSY, 120-24V, 75 VA 150S7019 4 FAN, COMPACT AC AXIAL E2392600 RECEIVED 5 RELAY, REPLACEMENT, 110V, SLIM E2385500 08/25/2023 ASPEN BUILDING DEPARTMENT Page 128 LAARS Heating Systems Heat Exchanger Assembly (Models 1250 and 1500) og) 6 cer.Vspii silk 10 See Refractory11111111111" CI CI Ceramic Fibers Warning in IN_ - 9 111 Section "1.D Safety Notes" #-5 �-.1: 0 4 0 o )Am -' i GI \ 4)) PARTS LIST ITEM DESCRIPTION 1250 1500 PART NO. NO. 1 SHROUD ASSEMBLY 1 1 R2082901 1 - 125S2141 2 HEAT EXCHANGER - 1 150S2141 3 BLANKET, INSULATION 1 1 150S218201 4 TEMPERATURE SENSOR 1 1 E2387700 5 VICTAULIC COUPLING 2 2 P2101300 6 RFC TILE ASSY, TOP 1 1 R2085600 7 RFC TILE ASSY, BOTTOM 1 1 R2085700 8 BAFFLE 24 24 150S2609 RECEIVED 9 CLAMP ASSEMBLY 6 6 150S2164 10 GASKET, TADPOLE 2 2 S2131304 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 129 Heat Exchanger Assembly(Models 1750, 2000, 2500 and 3000) 6 1 *: 11111 ow.. s 11 0 0 e_i :-.) 7 10 See Refractory Ceramic Fibers I 9 A Warning in Section "1.D Safety Notes" 4 i 8 itli GO ,`, Is) PARTS LIST ITEM DESCRIPTION 1750 2000 2500 3000 PART NO. NO. 1 - - - 175S2050 1 HEAT EXCHANGER - 1 1 - 25052050 - - - 1 30052050 1 - - - R2083701 2 SHROUD ASSEMBLY - 1 1 - R2083802 - - - 1 R2083900 1 - - - 175M17901 3 BLANKET,INSULATION - 1 1 - 2505222901 - - - 1 3005220801 4 TEM PERATURE SENSOR 1 E2387700 5 VICTAULICCOUPLING 2 F2109800 PRV,30 PSI 1 A2124000 PRV,50 PSI 1 A2124005 PRV,60 PSI 1 A2124004 6 PRV,75 PSI 1 A2124009 PRV,125 PSI 1 A2124013 PRV,150 PSI 1 A2124014 7 RFC 71LEASSY,TOP 1 R2085800 8 RFC 71LEASSY,BOTTOM 1 R2085900 42 1 - - - 175S2609 9 BAFFLE - 42 42 - 250S2609 - - - 42 300S2609 R I w► 10 CLAM PASSBV1BLY 5 6 6 5 250M102 11 GASKET,TADPOLE 2 S2131305 0 8/2 5/2 0 2 3 ASPEN BUILDING DEPARTMENT Page 130 LAARS Heating Systems Gas Train Assembly (Models 1250 and 1500) cc......._1/4.:,..414 _ 0 lizi CO iv CIoil CSD-1 14 Version J -k1 �40.` 0 ATik�� l� e WA(-vis+ r. ,s ' .KMdipl -------4!dui�sl'�I`1 :40 � �I(w' (, �� Il!IJI ��llll 0 0 /41,1* 4011 © © II NOTES: 1. APPLY THREAD SEALANT TO ALL MALE NPT THREADS BEFORE ASSEMBLY 2. 0-RINGS INCLUDED WITH GAS VALVE. 3. ITEM 6 FOR USE IN MASSACHUSETS Parts List QTY PART NO. DESCRIPTION ITEM NO. 1 R2004000 SWITCH, HIGH GAS PRESSURE 1 1 V2028100 GAS VALVE 2 2 R2085100 0-RING 3 1 R2004100 SWITCH, LOW GAS PRESSURE 4 1 P2112100 FITTING, ADAPTER, 8mm TUBE TO 1/8" NPT, 316 SST 5 1 KM008800 REGULATOR, GAS, 210E, 2"X 2", MAXITROL 6 -RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 131 Gas Train Assembly (Models 1750, 2000, 2500 and 3000) 0 III CP o p 1 0 0 AIL Ji� 0 _ , _, _dim._ _. II- - -_-iio 0::3 A 0 $161‘i . e .11Q A(.0 I 4 $ gm,„„.... _�_emft ,, _ © oats\ J,,,,....„, 1CSD-1 Il \ Version itk te NOTES: 1. APPLY THREAD SEALANT TO ALL MALE wt. NPT THREADS BEFORE ASSEMBLY O 2. 0-RINGS INCLUDED WITH GAS VALVE 3. ITEM 6 FOR USE IN MASSACHUSETS PARTS LIST 1750-2500 3000 PART NO. DESCRIPTION ITEM NO. 1 R2004000 SWITCH, HIGH GAS PRESSURE 1 1 - V2026300 GAS VALVE 2 1 V2028600 2 R2085200 0-RING 3 1 R2004100 SWITCH, LOW GAS PRESSURE 4 1 P2112100 FITTING, ADAPTER, 8mm TUBE TO 1/8" NPT, 316 SST 5 1 KM008800 REGULATOR, GAS, 210E, 2" X 2", MAXITROL 6 RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 132 LAARS Heating Systems Blower Burner Assembly (Models 1250 and 1500) O 0 (rd) O i „_41.--„, /47i. of :/ �� 4 iO041) 7._ / 411) ' s, 10 c 1 7111, iiiir • 0 l : * i („ '4, „,„, / uliY:. o O ,, O 0 C. . "''' 0 0 • F4 0 jiir O - - (W. _I: i'd ll O 0 --1-._4_ _-__ -- I Parts List ITEM DESCRIPTION 1250 1500 NO. 1 BURNER L2018804 2 GASKET, BURNER FLANGE S2132900 3 GASKET, IGNITER SENSOR S2131900 4 BACKER PLATE, GASKET, IGNITER SENSOR — 150S5048 _ 5 IGNITER-FLAME SENSE (includes gaskets and hardware) R2083000 6 SCREW, 10-32 x 1/2"SHCS,ZINC — F2057200 7 GASKET, BURNER S2131100 8 0-RING,3/16, 5 7/8 ID, EPDM 150S5010 9 BLOWER, 120V MODELS A2124400 BLOWER,208 &220/240V MODELS A2134400 10 0-RING, BLOWER, OMT 300S5039 HA A MIXER ASSEMBLY, FRONT R2084301 1 1 B MIXER ASSEMBLY, REAR R2084400 12 FITTING,ADAPTER,8mm TUBE TO 1/8"NPT,316 SST P2112100 13 GASKET, GAS MIXER S2132800 14 ORIFICE, INSERT, GAS (INCLUDES GASKETS) R2084001 -gi ' �15 ORIFICE, INSERT,AIR (INCLUDES GASKETS) R2084101 ..• 4EIVED 16 AIR STRAIGHTENER R2084200 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 133 Blower Burner Assembly (Models 1750, 2000 and 2500) 9B 41, " CI) fl I' 0 18 _Vil�- m All dk' icw (.4 0 441) �� 0 0 0 .11160 I. O It _ _ c_c:-_-,,-,,-;.--, O T.,-- b.a1100 O . NJ , _ r PART NUMBERS ITEM DESCRIPTION SIZE 1750 SIZE 2000 SIZE 2500 NO. 1 BURNER L2021803 L2021801 L2021801 2 GASKET, BURNER 300S2020 3 GASKET, ADAPTER FLANGE 300S2019 4 IGNITOR, SPARK, WITH FLAME SENSOR R2083100 5 SCREW, 8-32 x.375", SHCS, ZINC F2057300 6 GASKET, BLOWER OUTLET FLANGE 400S6904 BLOWER, 120V MODELS A2134500 A2134500 N/A 7 BLOWER, 208-600V MODELS A2132700 8 0-RING, BLOWER 300S5039 9A MIXER ASSY, FRONT R2084302 9B MIXER ASSY, REAR R2084400 10 FITTING, ADAPTER, 8mm TUBE TO 1/8" NPT P2112100 11 GASKET, GAS MIXER S2132800 12 ORIFICE INSERT, GAS (INCLUDES GASKETS) R2084002 R2084003 R2084004 P 13 ORIFICE, INSERT, AIR (INCLUDES GASKETS) R2084102 R2084103 R2084104 RECEIVED 14 AIR STRAIGHTENER R2084200 08/25/2023 ASPEN BUILDING DEPARTMENT Page 134 LAARS Heating Systems Blower Burner Assembly (Model 3000) 6 9 8B 8A CI,z1 :ii.y,i 411) n _____7, yo, , 1 1 , r .,,. /Al . IQ1'1f� . '" d � $ `1 10 tifir0-_II _ %,� O 1 - O 4;_c_.,.,_________ _, =JIL0111 -_(:= .- CI i=i� �� CI c.... ....) i �I I I . No* PART NUMBERS ITEM DESCRIPTION P/N NO. 1 BURNER L2021802 2 GASKET, BURNER 300S2020 3 GASKET, ADAPTER FLANGE 300S2019 4 IGNITOR, SPARK, WITH FLAME SENSOR R2083100 5 GASKET, BLOWER OUTLET FLANGE 400S6904 BLOWER, 208V MODEL A2133900 6 BLOWER, 480-600V MODELS A2133901 7 0-RING, BLOWER 300S5039 8A MIXER ASSY, FRONT R2084302 8B MIXER ASSY, REAR R2084400 9 FITTING, ADAPTER, 8mm TUBE TO 1/8" NPT P2112100 10 GASKET, GAS MIXER S2132800 11 ORIFICE NSERT, NCLUDES 04 12 ORIFICE,I INSERT, AIR ((IINCLUDES GASKETS)) R20841040 RECEIVED 13 AIR STRAIGHTENER R2084200 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 135 AC Distribution Box (Models 1250 and 1500) 220/240V SECONDARY / H1 - H4 " , PRIMARY X1 -X4 0 111111 O N '% © , ' AROs'�.��� � INF ��� ' ' � © 208V �i1 11 1 111;%. -:.•.0 .! , „ CI , ....,...444›, 1 ,,,.: 11 ;;. ,.,. .., • ., 4 ,11,0%ttk Bill of Material ITEM DESCRIPTION PART NO. 208V 10 220/240V NO. QTY 10 QTY 1 _CIRCUIT BREAKER, 7 AMP, PANEL MOUNT E2378600 1 _ 1 2 DIN RAIL ASSY,208/220/240V 10 300S731702 1 1 3 TRANSFORMER,208 X 416 PRIM, 120 X 240 SEC, 500 VA, 50/60HZ E2385300 1 - TRANSFORMER, 240 X 480 PRIM, 120 X 240 SEC,500 VA,50/60HZ E2384000 - 1 4 CIRCUIT BREAKER,2 POLE,3.0A, DIN RAIL MNT E2355100 1 1 5 POWER RELAY,COMBO, FLANGE/DIN RAIL MOUNT E2367900 1 1 6 WIRE HARNESS ASSY,208-220-240V 10 (not shown) 150S7402 1 1 RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 136 LAARS Heating Systems AC Distribution Box, Single Phase (Models 1750, 2000 and 2500) 11111 `` o p• O 1/ d 6 ie� b `.- -Alry! ,. - 0 :N/01411 0 b U PARTS TABLE AC DISTRIBUTION BOX, 10,MODELS 1750,2000,AND 2500 ITEM DESCRIPTION 120V 208V 220/240V PART NO. NO. QTY QTY QTY TRANSFORMER,208 X 416 PRIM, 120 X 240 SEC,500 VA,50/60HZ - 1 - E2385300 1 TRANSFORMER,240 X 480 PRIM, 120 X 240 SEC,500 VA,50/60HZ - - 1 E2384000 2 CIRCUIT BREAKER,7 AMP, PANEL MOUNT - 1 1 E2378600 3 FAN,AXIAL,4-1 1/16"SQUARE, 1-1/12"DEEP, 115VAC - 1 1 E2376300 4 DIN RAIL ASSY,208/220/240V 10 - 1 1 300S731702 5 CIRCUIT BREAKER,2 POLE,3.0 A, DIN RAIL MNT - 1 1 E2355100 6 POWER RELAY,COMBO,FLANGE/DIN RAIL MOUNT - 1 1 E2367900 7 CORD SET,AXIAL FAN,90 DEG HEAD,24"LEAD (not shown) - 1 1 E2376500 WIRE HARNESS ASSY, 120V, 10 (not shown) 1 - - 250S7401 8 WIRE HARNESS ASSY,208-220-240V 10 (not shown) - 1 1 250S7402 RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 137 AC Distribution Box, Three Phase (Model 2500) m® % .a OW er • fr • \ W p Igo. 1 . 0 I - 80*--'4"'-'4'4 „...1. lei,_.:2,iiii, .! ,, -4-4711e ., 4 1 CI e'Nv- o, 114 fill • fill ,--' - ' ' :, ,L; PARTS TABLE AC DISTRIBUTION BOX,30,MODELS 2500 ITEM DESCRIPTION 208V 480V 575/600V PART NO. NO. QTY QTY QTY 1 FAN,AXIAL,4-1 1/16"SQUARE, 1-1/2"DEEP, 115VAC 1 1 1 E2376300 TRANSFORMER,208 X 416 PRIM, 120 X 240 SEC,500 VA,50/60HZ 1 - - E2385300 2 — TRANSFORMER, HPS,SP2000ACP,Prim 600/480V,Sec 120x240 - 1 1 E2382900 3 TRANSFORMER, HPS,SP500ACP, Prim 600/480V,Sec 120x240 - 1 1 E2383000 4 CIRCUIT BREAKER, 12 APM,PANEL MOUNT - 1 1 E2383400 5 CIRCUIT BREAKER,7 AMP, PANEL MOUNT 1 1 1 E2378600 DIN RAIL ASSY,208V 30 1 - - 300S731703 6 DIN RAIL ASSY,480V 30 - 1 - 300S731704 DIN RAIL ASSY,575-600V 30 - - 1 300S731705 7 POWER RELAY,COMBO,FLANGE/DIN RAIL MOUNT 1 1 1 E2367900 CIRCUIT BREAKER,2 POLE,3.0A, DIN RAIL MNT 1 - E2355100 8 CIRCUIT BREAKER,2 POLE, 1.6A, DIN RAIL MNT - 1 - E2382700 9 CORD SET,AXIAL FAN,90 DEG HEAD,24"LEAD (not shown) 1 1 1 E2376500 WIRE HARNESS ASSY,208V 30 (not shown) 1 - - 250S7403 10 WIRE HARNESS ASSY,480V 30 (not shown) - 1 - 250S7404 WIRE HARNESS ASSY,575/600V 30 (not shown) - - 1 250S7405 11 FUSE,CURRENT LIMITING,600VAC,2.5A,CLASS CC - - 2 E2400100 12 FUSE HOLDER,MODULAR,CLASS CC,2-POLE - - 1 E2400200 RECEIVED 08/25/2023 ASPEN BUILDING DEPARTMENT Page 138 LAARS Heating Systems AC Distribution Box, (Model 3000) ill 0. 1011 0 ! .I k*.c.---I.--. -_ 4 1 „ v .,/ .,",. 11.1, ,..,iro47.,4---'- . p 'iip .4 CI �r cl 0 �i rr� 00 s I� „44 °Z O PARTS TABLE AC DISTRIBUTION BOX,MODEL 3000 ITEM NO. DESCRIPTION 208V 480V 600V PART NO. 1 TRANSFORMER,HPS,P006QKKF,Prim 600/480V,Sec 1 E2383300 480Y/277V TRANSFORMER,208 X 416 PRIM,120 X 240 SEC,500 VA, E2385300 2 50/60HZ TRANSFORMER,HPS,SP500ACP,Prim 600/480V,Sec 120x240 - 1 1 E2383000 3 CONTACTOR,3P,120V COIL 1 1 1 E2353000 4 CIRCUIT BREAKER,7 AMP,PANEL MOUNT 1 1 1 E2378600 5 FAN,AXIAL,4-1 1/16"SQUARE, 1-1/2"DEEP,115VAC 1 1 1 E2376300 6 CORD SET,AXIAL FAN,90 DEG HEAD,24"LEAD(not shown) 1 1 1 E2376500 WIRE HARNESS ASSY,208V,30,OMT 3.0(not shown) 1 - - 300S7401 7 WIRE HARNESS ASSY,480V,30,OMT 3.0(not shown) - 1 - 300S7402 WIRE HARNESS ASSY,600V,30,OMT 3.0(not shown) - - 1 300S7403 CIRCUIT BREAKER,3 POLE,480V 10.0A,DIN RAIL MNT - - 1 E2383500 8 CIRCUIT BREAKER,2 POLE,3.0A,DIN RAIL MNT 1 - - E2355100 CIRCUIT BREAKER,2 POLE,1.6A,DIN RAIL MNT - 1 - E2382700 DIN RAIL ASSY,600V,30,OMT 3.0 - - 1 300S731708 9 DIN RAIL ASSY,208-240V,30,OMT 3.0 1 - - 300S731706 DIN RAIL ASSY,480V,30,OMT 3.0 - 1 - 300S731707 10 FUSE HOLDER,MODULAR,CLASS CC,2-POLE - - 1 E2400200 REcEivED 11 FUSE,CURRENT LIMITING,600VAC,2.5A,CLASS CC - - 2 E2400100 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Page 139 Water Outlet Assembly (Models 1250 and 1500) 0 o fiV C 0 _,..-- 0 _ sir: 4 -1°-1) ) 4:11 _.._ ,,,---*._.,,, --_, _....„ - Cir•-Att 0 ,_.4.0 0 0 et; , ... , ,..c.:). , --0 i ....___... t 0 1) 4 sy;iszi,:, e) © 0 0 PARTS LIST ITEM HYDRONIC VOL WAT NO. DESCRIPTION QTY QTY PART NO. 1 VALVE,SHUT OFF,3/4"NPT, BRASS 1 1 R10-143 2 FLOW SWITCH KIT 1 1 150S4030 3 WELL, IMMERSION, 1/2"NPT 1 1 RE2058300 4 SENSOR,TEMPERATURE 1 1 E2371200 5 NIPPLE,CLOSE,SS,3/4"NPT - 1 P2070700 NIPPLE, CLOSE, BLK,3/4"NPT 1 - P0014100 6 PLUG, PIPE, 1/2 NPT, HEX HEAD,SST 316 ASME - 1 P2084800 PLUG, 1/2"STEEL 1 - P2016000 7 PLUG, 1/4"NPT,316 SS,CLASS 150 - 1 P2104000 PLUG, HD. 1/4"NPT,SQ SOCKET, BLK 1 - P2014200 GAUGE,TEMP/PRESSURE,70°F MAX LO-320°F MIN HI,0-230 PSI 1 1 30,50,60 psi- 8 RA0079000 GAUGE,TEMP/PRESSURE,70°F MAX LO-320°F MIN HI,0-90 PSI 1 1 75 125, 150 psi- R0060600 9 BUSHING, 1 1/4"NPT X 3/4",316 SS 1 1 P2072200 BUSHING, 1 1/4 NPT X 1 NPT,316 SS 1 1 P2069000 NIPPLE, PIPE 3/4 NPT CLOSE 316 SS 1 1 P2070700 10 NIPPLE, 1"NPT X CLOSE,SS 1 1 P2081500 NIPPLE, 1 1/4 NPT X 1 5/8 CLOSE,316 SS 1 1 P2069202 VALVE, PRV,APOLLO 10-604-34 150 PSI 3/4 X 3/4 NPT 3,116 KBTU/HR 1 1 A2124014 VALVE, PRV,APOLLO 10-604-25 125 PSI 3/4 X 3/4 NPT 2,639 KBTU/HR 1 1 A2124013 VALVE, PRV,APOLLO 10-604-15 75 PSI 3/4 X 3/4 NPT 1,686 KBTU/HR 1 1 A2124012 11 VALVE, PRV,APOL LO 10-615-12 60 PSI 1 X 1-1/4 NPT 2,657 KBTU/HR 1 1 A2124004 VALVE, PRV,APOLLO 10-615-10 50 PSI 1 X 1-1/4 NPT 2,295 KBTU/HR 1 1 A2124010 KBTU/HR RV,APOLLO 10-616-05 30 PSI 1-1/4 X 1-1/2 NPT 2,716 1 1 EI ED 08/25/2023 ASPEN BUILDING DEPARTMENT The OMNITHERM Water Outlet Assembly (Models 1750, 2000, 2500 and 3000) 2 ' All Manuals (Install & Operate, Start Up, and 0 Service Manuals) can be downloaded at . t• a ij a --,.._ Ipasir © O>>> 1611 0 in # On � - -- •r. ' ■ 0 NA dp• (is, • /` www.l ars.co J For Laars Product and Service VIDEOS 00 0 1cD' •: 74.(;) 11114 '4 youo :kF! ) •o 0 7101 giit.'_`lub https://www.youtube.com/ user/Iaars Heating PARTS LIST ITEM DESCRIPTION HYDRONIC VOL WAT PART NO. NO. QTY. QTY 1 VALVE,SHUT OFF,3/4"NPT,BRASS 1 1 R10-143 2 FLOW SWITCH KIT 1 1 250S4030 3 WELL, IMMERSION, 1/2"NPT 1 1 RE2058300 4 SENSOR,TEMPERATURE 1 1 E2371200 5 NIPPLE,CLOSE,BLK,3/4"NPT 1 - P0014100 NIPPLE,3/4 NPT,CLOSE,316 SS - 1 P2070700 6 PLUG,PIPE, 1/2 NPT, HEX HEAD,SST 316 ASME - 1 P2084800 PLUG, 1/2"STEEL 1 - P2016000 PLUG,2"NPT,316 SS,CLASS 150 - 1 P2103300 7 PLUG,PIPE,2"NPT,STEEL 1 - P2109300 8 PLUG, 1/4"NPT,316 SS,CLASS 150 - 1 P2104000 PLUG,HD. 1/4"NPT,SQ SOCKET,BLK 1 - P2014200 - GAUGE,TEMP/PRESSURE,70°F MAX LO-320°F MIN HI,0-230 PSI 1 1 30,50,60 psi RA0079000 9 7GAUGE,TEMP/PRESSURE,70°F MAX LO-320°F MIN HI,0-90 PSI 1 1 - 125, 150 psi-R0060600 Dimensions and specifications subject to change4,... without notice in accordance with our policy of continuous product improvement. �5�� / s A® 0 nAst4 ■�I CERTIFIED co�/ w.ehridl,e,ary.,rg 0 �av,%® C US \.,..,�.. as .I- C\J Low Lwd Camel I per,ANS3r: H HLW LAARso Customer Service and Product Support: 800.900.9276•Fax 800.5 1583 tVE D Headquarters:20 Industrial Way,Rochester,NH,USA 03867 •603.335.6300• . 5 9 Brigden Gate, Halton Hills,Ontario,Canada L7G 0A3(905)203-0600 Fax:(905)636-0666 Heating Systems Company www.Laars.com Litho in U.S.A.©Laars 20-01 Document 140$/2 5/2 0 2 3 A subsidiary of BRADFORD WH/TE®Corporation ASPEN BUILDING DEPARTMENT