HomeMy WebLinkAboutFile Documents.1419 Crystal Lake Rd.0009.2017 (28).ARBK aec
Architectural Engineering Consultants, Inc.
Mechanical, Electrical, & Lighting Design Services
An Office with LEEDTTMM Accredited Professionals
40801 US Hwy 6 & 24,Suite 214,Eagle-Vail, CO 81620 Post Office Box 8489,Avon, CO 81620
phone: 970-748-8520 email: stan@aec-vail.com:www.aec-vail.com
1419 Crystal Lake Design Assist Narrative
To: Matthew Smith From: Bryan Webster
Company: Thunderbowl Architects Project: 1419 Crystal Lake
Phone: 970-618-1645 Project No.: 16077
Date: 12-09-2016 Re: MEP Planning
Intro
The Residence at 1419 Crystal Lake is approximately 8,500 square-feet (sf) in size and is
located in Aspen, CO. We are providing this document to set a basis of design and to assist
a contractor in sizing and scope for the mechanical system. This document is intended to
provide general design specifications and intent, but does not serve as a construction
document. It is the contractor’s responsibility to provide a fully functioning system which
adheres to local codes as well as best design practices. All sizing has been completed using
computer load calculations based on the Architectural floor plans provided in November
2016. Reference permit documents for envelope assumptions & design conditions. Windows
assumed to have U-values not exceeding 0.35 and Shading coefficients of 0.4 max. It
should be noted that any changes to those plans may change the load calculations.
Heating Systems
Forced air heating, domestic hot water production, and kitchen makeup air requirements
will be served by (2) 200 MBH input condensing boilers B-1 & B-2. The snowmelt system
will consist of 7800 sf in the driveway and decks served by (1) 1250 MBH input condensing
boiler B-3.
Equipment
-Boilers
B-1 & 2 – (2) 200 input MBH Condensing Boilers to serve domestic hot water
(88 MBH), fan coil heat (150 MBH), and make-up air (87 MBH based on 1200
cfm). Typically, 30% Propylene Glycol (PG) & 130°F max supply temp.
B-3 – (1) 1250 input MBH Condensing Boiler to serve the snowmelt areas
(975 MBH). Typically, 50% PG & 130°F max supply temp.
-Water heater
WH-1&2 – (2) 80 Gallon side-arm water heaters
-Pumps
Provide variable speed boiler pumps, variable speed fan coil pump, single
speed domestic water pump, single speed snow melt pumps.
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-Glycol Feeders
Provide glycol feeder for each boiler system.
-Expansion Tank
Provide expansion tank for each boiler system.
Sequence of Operations (See boiler piping diagram for reference)
- Boilers B-1 & B-2:
The boilers and their associated boiler pumps shall stage and rotate to provide
heating & domestic hot water. Upon a call for heating the boilers shall fire based
upon an outdoor reset schedule with a maximum temperature at the boiler supply
water temperature sensor of 130°F. Each boiler pump (P-1 & P-2) shall be controlled
with a 0-10 VDC signal from its respective boiler to maintain a 30°F ΔT (adj.)
between the supply water temperature sensor in the secondary loop and the boiler
return water temperature sensor. Upon a call for domestic water heating, P-5 shall
start (duty standby), and the boiler(s) shall provide 180°F supply water.
- Snowmelt Boiler, B-3:
The boiler shall provide heating for snowmelt operations. The snowmelt system shall
be split into separate groups for the driveway on the north side of the house and the
decks on the south side of the house, and shall be controlled according to an
outdoor temperature sensor and a slab snow/ice sensor via Tekmar 654 controller
for each group (set into boiler control mode to provide slab protection). When the
outdoor temperature is below 35°F (adj.), the snowmelt system shall be enabled, P-
7/P-8 shall run, and B-3 and P-6 shall cycle/modulate to maintain a slab temperature
of 28°F (adj.). If the system is enabled and moisture is sensed on either slab, B-3
and P-6 shall cycle/modulate to maintain a slab temperature of 38°F (adj.).
Air Side Systems
Equipment
-Fan Coils
Provide fan coils based upon performance requirements shown below. Precise
location of fan coils TBD, but general locations are as follows: Lower and
main level in storage closets and mechanical room. Upper level in master
closets or bathroom ceilings. Consider noise mitigation when placing units
and extensively coordinate access with Architects and Interior Designers.
-Condensing Units
Provide a condensing unit for each fan coil sized to properly match the
cooling load. Both zoned fan coils will require modulating capabilities from
the condensing unit, which may involve hot gas bypass or a manufacturer
specific method of providing turn-down without risking over-cycling or
freezing of the coils. All condensing units shall be placed on the roof with
clearances and line set lengths coordinated with the manufacturer. Precise
location and screening TBD to limit visibility. Final placement to adhere to
local sound ordinances.
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Fan Coil
Number
Area Served Heating Load
(MBH)
Cooling Load
(MBH)
Airflow
(cfm)*
1 Lower level common areas 18 40 2200
2 ZD-1: Bed 1, ZD-2: Bed 2 10 (5+5) 12 (6.5+5.5) 400+350
3 Living, Entry, Dining 32 30 1800
4 Kitchen (MUA), Family, Mud 115 40 2500
5 Master Suite 24 23 1400
6 ZD-3: Bed 3, ZD-4: Office,
ZD-5: Bed 4
24 (9+6+9) 24
(8+8.2+7.8)
500+530+500
*Sized for 55°F discharge air for cooling. Ensure heating/cooling capacities are met and
coordinate airflow with manufacturer at altitude.
-Unit Heater
The garage has a heating load 18 MBH. This load should be met with a
hydronic unit heater sized by the manufacturer to provide a 18 MBH output
using 130°F fluid with 30% Propylene Glycol at 8000’ asl. This will result in a
unit with a nominal rating much higher than 18 MBH.
-Exhaust Fans
Provide exhaust in all bathrooms (~50-100 cfm for smaller bathrooms, and
~200 cfm for master bath) and ensure either dedicated fans or separate
exhaust inlets in all toilet and shower rooms. Provide exhaust fan for garage
with 100 cfm per vehicle, and not combined with any other exhaust duct.
-Energy Recovery Ventilators (ERV’s)
The total ventilation rate shall be at least 280 cfm (according to ASHRAE
62.2) and connected into the return ducts of fan coils on each level. The
ventilation rate can be achieved using (1) RenewAire EV200 and (1) EV130.
The EV200 shall be distributed to both lower level fan coils, and the main
level unit serving the living room and dining room. The EV130 shall be
distributed between the upper level fan coils. Some exhaust fans can be
eliminated and replaced with return air vents to the ERV’s to provide more
pressure balance.
-Make-Up Air / Economizer
Provide 1200 cfm (size to match hood exhaust) of make-up air to kitchen
area, interlock controls with kitchen hood. An insulated outdoor air duct shall
route from an exterior louver (location TBD) and connect to a return mixing
box on FC-4. Verify size of kitchen hood with owner prior to install, contractor
to balance MUA with exhaust and revise heat requirements as needed.
-Humidification
Provide Nortec RH2 humidifier (or equivalent) on at least one fan coil per
level. Ensure proper space is available for straight, unlined supply duct on
either side of humidifier nozzle (precise length coordinated with
manufacturer), with sloped pan and drain.
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Sequence of Operations
Fan Coils – Upon a call for heating, P-3 shall start (duty standby) and the 2-way
valve shall open from heating water loop to respective fan coil and provide heated
supply air until the call for heating is met. Upon a call for cooling, respective
condensing unit shall run and fan shall start to provide cold supply air until call for
cooling is met. Zoned fan coils shall either be equipped with a variable speed fan
motor, OR a bypass duct to allow supply air to be turned down or bypassed during a
single zone call.
MUA (Fan Coil FC-4) – Upon a call for make-up air from kitchen hood (no heating
call), enable heating coil in FC-4, start P-4 and modulate 3-way mixing valve to
provide supply 70F (adj) supply air temperature based upon the supply air sensor in
the supply duct until call for make-up air is met. Upon a call for heat, the 3-way
mixing valve shall modulate to provide 90F supply air.
Exhaust Fans – Bath exhaust fans to be controlled by wall switches. The garage
exhaust fan shall be interlocked with a carbon monoxide sensor & wall switch.
Whenever carbon monoxide is detected, the fan shall run until the levels drop. The
wall switch shall enable fan operation, but not disable it if carbon monoxide is
detected. Interlock mechanical room fan with cooling only thermostat and damper
on outside air duct.
Energy Recovery Ventilator- Shall include percentage timer and point of use
controller.
Notes
- Due to the small capacity and limited duct space and access for the zoned fan
coils, it has been discussed that mini/multi split systems could be used. This will
involve dedicated fan coils for each zone, but eliminates common ducting needed
to route between spaces. Concealed, ducted units shall be the used over ductless
units due to aesthetics.
- Existing snowmelt boilers are present and it may be possible to utilize those
given they can provide an output capacity of 125 BTU/H/SF of snowmelted area.
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Mechanical Specification
1. GENERAL:
a. FURNISH ALL LABOR, SUPERVISION, MATERIALS, EQUIPMENT AND FACILITIES
NECESSARY TO FURNISH, FABRICATE, DELIVER, STORE AND INSTALL ALL WORK
NOTED ON THE DRAWINGS AND/OR SPECIFIED HEREIN.
b. THE CONTRACTOR SHALL FURNISH AND INSTALL ALL WORK NECESSARY TO MAKE
A COMPLETE SYSTEM WHETHER OR NOT SUCH DETAILS ARE MENTIONED IN THESE
SPECIFICATIONS OR SHOWN ON THE PLANS, BUT WHICH ARE OBVIOUSLY
NECESSARY TO MAKE A COMPLETE SYSTEM, EXCEPTING ONLY THOSE PORTIONS
THAT ARE SPECIFICALLY MENTIONED HEREIN OR PLAINLY MARKED ON THE
ACCOMPANYING DRAWINGS AS BEING INSTALLED UNDER ANOTHER SECTION OF
THE SPECIFICATIONS.
2. WORKMANSHIP:
a. THE WORK SHALL BE ACCOMPLISHED IN A THOROUGH AND WORKMAN-LIKE
MANNER SATISFACTORY TO AND MEETING THE APPROVAL OF THE OWNER AND
ARCHITECT.
3. MATERIALS:
a. ALL MATERIALS AND EQUIPMENT SHALL BE NEW AND THE BEST OF THEIR
RESPECTIVE KIND, FREE FROM ALL DEFECTS AND OF THE MAKE AND QUALITY
SPECIFIED.
4. SITE INSPECTION:
a. CONTRACTOR SHALL VISIT THE SITE OF WORK PRIOR TO SUBMISSION OF HIS BID
AND THOROUGHLY FAMILIARIZE HIMSELF WITH THE WORKING CONDITIONS &
EXACT NATURE OF THE WORK.
b. SUBMISSION OF A BID ACKNOWLEDGES FULL RESPONSIBILITY FOR FURNISHING A
COMPLETE AND FUNCTIONAL SYSTEM.
c. NO CHANGES IN CONTRACT WILL BE MADE TO ACCOMMODATE OR ALLOW EXTRA
FUNDS FOR ANY OMISSION WHICH RESULTS FROM A FAILURE TO THOROUGHLY
MAKE THE EXAMINATION.
5. CODES AND PERMITS:
a. ALL MECHANICAL EQUIPMENT, INSTALLATION, ETC., SHALL CONFORM TO THE 2009
INTERNATIONAL MECHANICAL CODE (IMC), 2009 INTERNATIONAL ENERGY
CONSERVATION CODE (IECC) AND ORDINANCES AS INTERPRETED BY THE CITY OF
ASPEN BUILDING DEPARTMENT.
b. CONTRACTOR SHALL OBTAIN AND PAY FOR ALL PERMITS AND INSPECTIONS.
c. COPIES OF ALL PERMITS AND INSPECTION REPORTS SHALL BE SUBMITTED TO THE
ARCHITECT.
6. AS-BUILTS:
a. CONTRACTOR SHALL PROVIDE A COMPLETE SET OF AS-BUILT DOCUMENTS WITH
ALL CHANGES NOTED THEREON AT THE COMPLETION OF THE PROJECT AND PRIOR
TO FINAL ACCEPTANCE AND PAYMENT.
7. GUARANTEE:
a. CONTRACTOR SHALL UNCONDITIONALLY GUARANTEE ALL LABOR AND MATERIALS
ON ALL WORK AGAINST DEFECTS IN WORKMANSHIP AND MATERIALS FOR A
PERIOD OF ONE YEAR AFTER COMPLETION.
8. SUBMITTALS:
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a. CATALOG INFORMATION AND CUTS OF ALL EQUIPMENT AND DEVICES (WITH ALL
OPTIONS CLEARLY MARKED) SHALL BE SUBMITTED TO THE ARCHITECT FOR
REVIEW (SIX COPIES OF EACH). ELECTRONIC SUBMITTALS PREFERRED.
PERFORMANCE SELECTIONS REQUIRED FOR FAN COILS, HEAT EXCHANGERS, AND
PUMPS.
9. COORDINATION:
a. THE CONTRACTOR SHALL COORDINATE HIS WORK WITH OTHER TRADES TO
PROVIDE BEST ARRANGEMENT OF ALL DUCTS, PIPES, CONDUIT, ETC.
10. CUTTING AND PATCHING:
a. ALL CUTTING AND PATCHING REQUIRED OF THE STRUCTURE (NEW OR EXISTING)
SHALL BE PROVIDED UNDER OTHER SECTIONS OF THE WORK.
b. PROVIDE NECESSARY REQUIREMENTS TO THE PROJECT SUPERINTENDENT.
c. X-RAY SLABS PRIOR TO CORING.
11. CLEANUP:
a. UPON COMPLETION OF THE WORK UNDER THIS SECTION, THE CONTRACTOR
SHALL REMOVE ALL SURPLUS MATERIALS, EQUIPMENT AND DEBRIS INCIDENTAL
TO THIS WORK AND LEAVE THE PREMISES CLEAN AND ORDERLY.
12. MECHANICAL IDENTIFICATION
a. EQUIPMENT NAMEPLATES: METAL, WITH DATA ENGRAVED OR STAMPED, FOR
PERMANENT ATTACHMENT ON EQUIPMENT.
b. PIPE MARKERS: PREPRINTED, COLOR CODED, WITH LETTERING INDICATING
SERVICE, AND SHOWING DIRECTION OF FLOW.
c. VALVE TAGS: STAMPED OR ENGRAVED WITH 1/4" LETTERS FOR PIPING SYSTEM
ABBREVIATION AND 1/2" NUMBERS, WITH NUMBERING SCHEME. PROVIDE 5/32"
HOLE FOR FASTENER.
d. VALVE TAG SCHEDULE: PREPARE A VALVE TAG SCHEDULE TO BE SUBMITTED TO
THE MAINTENANCE ENGINEER FOR RECORD.
13. DUCTWORK:
a. DUCTWORK SHALL BE FABRICATED AND INSTALLED IN ACCORDANCE WITH THE
2009 IMC AND SMACNA STANDARDS.
b. DUCTWORK SHALL BE GALVANIZED STEEL GAUGES TO MEET SMACNA
STANDARDS. DUCTWORK SIZES INDICATED ARE INSIDE TO INSIDE [OUTSIDE TO
OUTSIDE] DIMENSIONS.
c. ALL DUCT JOINTS SHALL BE SEALED AIR TIGHT WITH RCD CORP. # 6 MASTIC
ADHESIVE WITH VERSA GRIP OR MESH.
d. ALL FINAL CONNECTIONS TO SUPPLY GRILLES SHALL BE COMPLETED WITH
ACOUSTICAL FLEXIBLE DUCT UNLESS OTHERWISE NOTED ON THE PLANS.
MINIMUM LENGTH IS 3’, MAXIMUM LENGTH IS 5’.
e. FLEXIBLE DUCT USED FOR CONDITIONED AIR SHALL BE UL APPROVED, VINYL
COATED, WIRE REINFORCED FIBERGLASS, WITH MAXIMUM THERMAL
CONDUCTIVITY OF 0.30 BTU-IN/HR-FT2-°F AND A MAXIMUM LENGTH OF FIVE FEET.
f. CLOTHES DRYER VENT EXHAUST DUCTWORK SHALL BE ALUMINUM. DUCTWORK
SHALL NOT BE CONNECTED OR INSTALLED WITH SHEET METAL SCREWS OR
OTHER FASTENERS THAT WILL OBSTRUCT THE EXHAUST FLOW. TERMINATE WITH
A WALL CAP WITH A BACK DRAFT DAMPER. SCREENS ARE PROHIBITED. REFER TO
SECTION M1502 OF THE 2009 IRC FOR MAXIMUM DRYER EXHAUST DUCT LENGTHS.
g. DUCTWORK SHALL BE SIZED AT A MAXIMUM VELOCITY OF 1,000 FPM/.08"
PRESSURE DROP PER 100 FEET.
h. EACH MECHANICAL VENTILATION SYSTEM (SUPPLY AND/OR EXHAUST) SHALL BE
EQUIPPED WITH A MEANS OF SHUT-OFF WHEN VENTILATION IS NOT REQUIRED,
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AND BACKDRAFT DAMPERS WHICH CAN BE CLOSED ON FAN SHUTDOWN SHALL BE
PROVIDED FOR AIR INTAKES AND/OR DISCHARGES.
i. CLEAN OUT ALL DUCTS PRIOR TO SUPPLY AND RETURN GRILLE INSTALLATION
j. DOUBLE THICKNESS TURNING VANES SHALL BE USED ON ALL DUCT TURNS OF 90°.
14. HEATING PIPING:
a. HEATING HOT WATER PIPING 2½” INCHES AND BELOW SHALL BE TYPE "L" COPPER,
HARD DRAWN, WITH WROUGHT COPPER SWEAT FITTINGS. JOINTS SHALL BE
SOLDERED WITH 95-5 OR SILVER SOLDER. CONDENSER WATER AND HEATING HOT
WATER PIPING 3" AND ABOVE SHALL BE SCHEDULE 40 BLACK STEEL A-53
SEAMLESS PIPE WITH WELDED FITTINGS.
b. VALVES SHALL BE DANFOSS OR EQUAL; SERVICE PRESSURE SHALL BE AS
REQUIRED. VALVES SHALL BE SUITABLE FOR SERVICE INTENDED. PROVIDE
PRESSURE INDEPENDENT CONTROL VALVE MODELS FOR ALL VARIABLE SPEED
SYSTEMS UNLESS NOTED OTHERWISE.
c. PROVIDE HANGERS, SUPPORTS AND INSULATION SADDLES AS REQUIRED AND PER
ANSI REQUIREMENTS. PLUMBERS TAPE AND WIRE ARE NOT ACCEPTABLE.
d. PIPING SHALL BE SIZED AT A MAXIMUM PRESSURE DROP OF 3.5 FT PER 100 FEET &
4 FEET/SEC VELOCITY. UNLESS OTHERWISE NOTED, ALL PIPING SHOWN ON PLANS
HAS BEEN SIZED FOR COPPER. PROVIDE DEDUCT ALTERNATE PRICING FOR PEX. IF
PEX IS USED, UPSIZE PIPE BY 1 NOMINAL SIZE.
e. CONTROL VALVE Cv RATINGS SHALL BE SELECTED AT A MAXIMUM PRESSURE
DIFFERENTIAL ACROSS THE VALVE OF 2 PSI.
f. PROVIDE 3” DIA. x 24" L SCHEDULE 40 PVC INLINE FILTER FILLED WITH LIMESTONE
AGGREGATE TO NEUTRALIZE THE BOILER'S CONDENSATE DRAIN.
g. PROVIDE EXPANSION JOINTS OR LOOPS ON ALL HEATING WATER PIPING RUNS IN
EXCESS OF 50’.
15. REFRIGERANT PIPING:
a. REFRIGERANT LINE SETS SHALL BE FURNISHED BY THE CONDENSING UNIT
MANUFACTURER AND BE PRE-INSULATED.
b. REFRIGERANT PIPING CONNECTIONS SHALL BE BRAZED WITH 15% SILL FLOSS.
PURGE PIPING WITH NITROGEN WHILE BRAZING.
c. PROVIDE HANGERS, SUPPORTS AND INSULATION SADDLES AS REQUIRED AND PER
ANSI REQUIREMENTS. PLUMBERS TAPE AND WIRE ARE NOT ACCEPTABLE.
d. REFRIGERANT PIPING INDICATED IS SCHEMATIC ONLY. SIZE PIPING AND DESIGN
THE ACTUAL PIPING LAYOUT, INCLUDING OIL TRAPS, DOUBLE RISERS,
SPECIALTIES, AND PIPE AND TUBE SIZES, TO ENSURE PROPER OPERATION AND
COMPLIANCE WITH WARRANTIES OF CONNECTED EQUIPMENT.
e. EVACUATE THE ENTIRE REFRIGERANT SYSTEM WITH A VACUUM PUMP TO A
VACUUM OF 500 MICROMETER FOR A PERIOD OF 12 HOURS PRIOR TO CHARGING.
16. DUCTWORK INSULATION:
a. ALL DUCTWORK SHALL BE INSULATED CONSISTENT WITH THE REQUIREMENTS PER
SECTION 604 OF THE 2009 IMC.
b. INSULATION SHALL BE UL LISTED IN COMPLIANCE WITH A FLAME-SPREAD INDEX
NOT MORE THAN 25 AND SMOKE DEVELOPED INDEX NOT MORE THAN 50, PER THE
2009 IMC. INSTALLATION SHALL BE IN ACCORDANCE WITH IMC REQUIREMENTS.
c. RECTANGULAR SUPPLY, RETURN & TRANSFER DUCTWORK SHALL BE INTERNALLY
LINED WITH A VAPOR RESISTANT DUCT LINER OF THICKNESSES SPECIFIED BELOW.
d. CONCEALED ROUND, CONCEALED OVAL & OUTDOOR AIR DUCTS SHALL BE
EXTERNALLY WRAPPED WITH FIBERGLASS INSULATION WITH AN EXTERNAL VAPOR
BARRIER. REQUIRED R-VALUES ARE SPECIFIED BELOW.
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e. ALL SUPPLY, RETURN & TRANSFER DUCTWORK LOCATED WITHIN THE BUILDING
ENVELOPE SHALL BE INSULATED TO A MINIMUM OF R-4 (1” LINER) UNLESS
SPECIFIED OTHERWISE ON THE PLANS.
f. ALL SUPPLY DUCTWORK LOCATED IN ATTICS OR OTHER UNCONDITIONED SPACES
SHALL BE INSULATED TO A MINIMUM OF R-8 (2” LINER). ALL OTHER DUCTS IN
UNCONDITIONED SPACES SHALL BE INSULATED TO A MINIMUM OF R-6 (1-1/2”
LINER).
g. ALL OUTDOOR AIR DUCTS SHALL BE INSULATED TO A MINIMUM OF R-6 WITH A
VAPOR BARRIER.
17. PIPING INSULATION:
a. ALL HYDRONIC PIPING SHALL BE INSULATED CONSISTENT WITH THE
REQUIREMENTS PER SECTION 1204 OF THE 2009 IMC.
b. INSULATION SHALL BE UL LISTED IN COMPLIANCE WITH A FLAME-SPREAD INDEX
NOT MORE THAN 25 AND SMOKE DEVELOPED INDEX NOT MORE THAN 450, PER THE
2009 IMC. INSTALLATION SHALL BE IN ACCORDANCE WITH IMC REQUIREMENTS.
c. ALL HYDRONIC PIPING SHALL BE INSULATED TO A MINIMUM OF R-3.
d. ALL PIPING ROUTED BELOW THE SLAB UNDERGROUND SHALL BE TYPE "k" COPPER
AND SHALL BE INSULATED WITH ARMIFLEX TYPE INSULATION.
18. TEMPERATURE CONTROL DEVICES:
a. CONTRACTOR SHALL PROVIDE STAND-ALONE CONTROLS CAPABLE OF MEETING
THE SEQUENCE OF OPERATION DESCRIBED IN THE DESIGN NARRATIVE.
b. THE HVAC SYSTEM SHALL BE PROVIDED WITH 7-DAY PROGRAMMABLE AUTOMATIC
SPACE TEMPERATURE CONTROL DEVICES (THERMOSTATS) AS SHOWN ON THE
PLANS. THE THERMOSTATS SHALL BE CAPABLE OF SCHEDULING OCCUPANCIES
AND PROVIDING SETBACK CAPABILITIES TO MAINTAIN ZONE SETPOINTS DOWN TO
55°F OR UP TO 85°F.
c. CONTROLS SHALL BE CAPABLE OF PROVIDING A DEADBAND OF AT LEAST 5°F
BETWEEN HEATING AND COOLING.
d. THERMOSTATS SHALL HAVE NUMERIC SET POINTS IN °F, ADJUSTABLE SETPOINT
STOPS, AND SHALL BE MOUNTED AT 46" ABOVE FINISHED FLOOR ADJACENT TO
THE ROOM'S LIGHT SWITCH.
e. COORDINATE CONTROL TIE-INS WITH CONTROLS CONTRACTOR AS NECESSARY.
f. ALL THERMOSTATS SHALL BE APPROVED BY THE OWNER.
19. SNOWMELT INSULATION:
a. INSULATION SHALL BE INSTALLED UNDER ALL SNOWMELT AREAS, MINIMUM R-10.
CONFIRM COMPRESSIVE STRENGTH RATING REQUIREMENTS WITH THE
STRUCTURAL ENGINEER FOR EACH APPLICATION. INSULATION UNDER TRAFFIC
AREAS MUST BE TRAFFIC RATED. BUBBLE-TYPE INSULATION IS PROHIBITED
ENTIRELY.
20. GAS APPLIANCE VENTING:
a. ACCEPTABLE VENT MATERIALS, ROUTING, DISTANCE AND TERMINATION
LOCATIONS SHALL COMPLY WITH MANUFACTURER’S INSTALLATION INSTRUCTIONS
AND ALL REQUIREMENTS IN CHAPTER 8 OF THE 2009 IMC. PVC PIPING IS NOT
ACCEPTED FOR BOILER OR WATER HEATER VENTING. POLYPROPYLENE PIPING
MUST BE APPROVED FOR USE WITH APPLIANCE MANUFACTURER. CPVC MUST
COMPLY WITH ASTM F441.
21. WATER QUALITY:
a. HEATING AND CHILLED WATER CONDITIONS SHALL BE WITHIN HARDNESS AND PH
RANGE SUITABLE FOR MECHANICAL EQUIPMENT (PER MANUFACTURER).
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CONTRACTOR TO TEST CONDITIONS PRIOR TO SYSTEM FILL. WATER SOFTENERS
OR OTHER DEVICES MAY BE REQUIRED TO IMPROVE WATER QUALITY.
b. INCLUDE CORROSION INHIBITORS ON ALL PROPYLENE GLYCOL MIXTURES.
c. PRIOR TO SYSTEM FILL, ALL TUBING SYSTEMS AND MANIFOLDS SHALL BE
CLEANED AS PRESCRIBED BY THE TUBING MANUFACTURER. SUPPLY ALL TOOLS,
CONNECTIONS, LABOR, AND ACCESSORIES NECESSARY TO PROPERLY REMOVE
ALL FOREIGN MATERIAL, CHEMICAL, AND RESIDUE WITHIN THE TUBING SYSTEM
BEFORE PERMANENTLY CHARGING THE SYSTEM AND PLACING INTO OPERATION.
22. BEFORE STARTING ANY WORK, THE CONTRACTOR FOR THIS SECTION OF THE WORK
SHALL EXAMINE A COMPLETE SET OF DRAWINGS FOR ALL TRADES, INCLUDING
ARCHITECTURAL, STRUCTURAL, HVAC, ELECTRICAL, FIRE PROTECTION AND PLUMBING.
DIMENSIONS, SPACE REQUIREMENTS AND POINTS OF CONNECTION TO ALL EQUIPMENT
SHALL BE VERIFIED, AND ANY MINOR ADJUSTMENTS NECESSARY TO AVOID CONFLICT
WITH THE BUILDING STRUCTURE AND THE WORK OF THE OTHER TRADES SHALL BE MADE.
CONTRACTOR SHALL NOTIFY ARCHITECT IMMEDIATELY IF ANY MAJOR CONFLICTS OCCUR.
23. COORDINATE LOCATIONS OF ALL ROOF AND EXTERIOR WALL OPENINGS WITH ALL
RELEVANT TRADES, AND PROVIDE WATERTIGHT FLASHINGS WHEREVER PENETRATIONS
OCCUR. EXACT LOCATIONS AND SIZES MAY BE DEPENDENT UPON EQUIPMENT
SELECTIONS; COORDINATE SIZES AND LOCATIONS OF ALL OPENINGS WITH APPROPRIATE
EQUIPMENT REQUIREMENTS.
24. PERMANENT ACCESS TO EQUIPMENT SHALL BE PROVIDED, AND A MINIMUM OF 30" CLEAR
WORKING SPACE IN FRONT OF ACCESS PANELS TO THE COMPRESSOR, BLOWER
ASSEMBLY AND AIR FILTER SECTION OF THE EQUIPMENT SHALL BE PROVIDED BY
GENERAL CONTRACTOR.
25. ALL EQUIPMENT SHALL BE SECURELY FASTENED TO THE BUILDING STRUCTURE WITH
CODE APPROVED VIBRATION ISOLATORS.
26. EACH PIECE OF EQUIPMENT AND ALL SYSTEMS SHALL BE ADJUSTED AND RE-ADJUSTED
TO INSURE PROPER FUNCTION OF ALL CONTROLS, MAINTENANCE OF TEMPERATURE,
ADEQUACY OF FLOWS AND CAPACITIES, ELIMINATION OF NOISE AND VIBRATION, AND
SHALL BE LEFT IN PROPER OPERATING CONDITION.
27. TEST & BALANCING:
a. THE ENTIRE HEATING AND VENTILATING SYSTEM SHALL BE BALANCED BY AN
INDEPENDENT CERTIFIED TEST AND BALANCE COMPANY.
b. 5 COPIES OF THEIR BALANCE REPORTS SHALL BE SUBMITTED TO THE ENGINEER
FOR REVIEW AND APPROVAL. ELECTRONIC DISTRIBUTION PREFERRED.
c. ALL REQUIRED RE-SHEEVING AND ADJUSTING OF EQUIPMENT SHALL BE MADE BY
THE TEST & BALANCE CONTRACTOR.
d. ALL FINAL MEASURED CAPACITIES SHALL BE WITHIN 10% OF THOSE INDICATED ON
THE PLANS.
28. FINAL LOCATION OF GRILLES, REGISTERS & DIFFUSERS SHALL BE PER THE
ARCHITECTURAL PLANS, ELEVATIONS OR AS PER FIELD REQUIREMENTS (UPON
ACCEPTANCE BY ARCHITECT).
29. THE GENERAL CONTRACTOR SHALL FURNISH & INSTALL ALL OF THE REQUIRED ACCESS
PANELS IN THE DRYWALL CEILINGS TO GAIN SERVICE ACCESS TO THE EQUIPMENT.
EQUIPMENT WITH MANUFACTURER MANDATED SERVICE REQUIREMENTS INSTALLED
WITHIN CRAWLSPACES MUST BE A MAXIMUM OF 20 FEET FROM AN ACCESS PANEL.
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30. ALL EQUIPMENT SHALL BE INSTALLED ACCORDING TO THE MANUFACTURER'S
INSTALLATION, OPERATION & MAINTENANCE MANUAL’S RECOMMENDATIONS ESPECIALLY
FOR SERVICE CLEARANCES.
31. FILTERS:
a. SHALL BE UL RATED AND APPROVED.
b. PRESSURE DROPS SHALL NOT EXCEED .10" STATIC PRESSURE.
32. ELECTRICAL CONNECTIONS:
a. UNLESS OTHERWISE INDICATED ALL MAGNETIC MOTOR STARTERS, THERMAL
OVERLOADS, LOW VOLTAGE THERMOSTATS, CONTROL RELAYS, CONTROL
TRANSFORMERS AND SOLENOID VALVES SHALL BY FURNISHED BY THE
MECHANICAL CONTRACTOR.
b. UNLESS OTHERWISE SPECIFIED, ALL MOTORIZED DAMPERS SHALL BE LOW
VOLTAGE. ALL WIRING AND POWER CONNECTIONS SHALL BE PROVIDED BY THE
MECHANICAL CONTRACTOR.
c. PROVIDE MOTORS AND EQUIPMENT FOR ONLY THOSE CURRENT
CHARACTERISTICS INDICATED ON THE DRAWINGS.
d. IT IS THE INTENT OF THIS DIVISION TO REQUIRE A COMPLETE SYSTEM PER THE
CONTRACT DOCUMENTS.
e. COORDINATE ALL EQUIPMENT REQUIRING ELECTRICAL POWER, REGARDLESS OF
VOLTAGE, WITH OTHER TRADES, SO THAT ALL SYSTEMS ARE COMPLETE AND
OPERATIONAL.
f. ALL THREE PHASE MOTORS SHALL BE PROVIDED WITH PHASE LOSS PROTECTION.
g. ALL SINGLE AND THREE PHASE MOTORS, STARTERS AND DISCONNECTS
PROVIDED BY MECHANICAL CONTRACTOR AND WIRED BY THE ELECTRICAL
CONTRACTOR.
33. ACOUSTICAL COMPLIANCE
a. AEC IS NOT ABLE TO PROVIDE ACOUSTICAL MODELING OF EXTERIOR EQUIPMENT,
NOR PROVIDE DOCUMENTATION SUPPORTING COMPLIANCE WITH THE CITY OF
ASPEN NOISE ORDINANCE. AN ACOUSTICAL CONSULTANT IS RECOMMENDED TO
VERIFY COMPLIANCE. NOISE MITIGATION MEASURES (BY OTHERS) MAY BE
REQUIRED.
34. TEMPORARY HEATING DURING CONSTRUCTION:
a. MECHANICAL EQUIPMENT SHALL NOT BE UTILIZED FOR TEMPORARY HEATING.
b. GAS FIRED TEMPORARY HEAT SHALL BE PROVIDED BY THE GENERAL
CONTRACTOR.
Received
2/22/17