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HomeMy WebLinkAboutFile Documents.210 S 1st St.0281.2017 (11).ARBK FLEETWOOD WINDOWS & DOORS I Fleetwood Way, Corona CA 92878 www.FleetwoodUSA.com Energy Code Compliance IECC(International Energy Compliance Code) DOE(Department of Energy) ASHRAE(American Society of Heating,Refrigeration&Air Conditioning Engineers) LBL(Lawrence Berkley Laboratories) NFRC(National Fenestration Rating Council) CMA(Component Modeling Approach) Building Department Professional: This packet is being provided to you in advance to assist in the approval process.While performance energy reports have been used for over a decade,some are frustrated when these reports are submitted in the late stages.Therefore,along with this packet a Fleetwood Dealer is providing specific information regarding the project(attached packet). Fleetwood's sole business is making windows and doors for custom built,modern houses.In modern designs much of the envelope is glass and window framing, making energy compliance a challenge.In the early 2000's, Fleetwood began using approved NFRC software to help homeowners prove envelope compliance with the IECC.Our goal herein is to illustrate the legitimacy of residential projects using the Simulated Performance Alternative method. Federal or State? Most states are using the Federal government code(IECC)but some states, such as California, have adopted their own energy code e.g.Title 24 (www.energy.ca.gov/title24/2013standards/)which is possible as long as the state can prove their code is equal to or more stringent than the IECC. Most of the information within this document is geared toward IECC. Building Envelope Compliance The IECC allows for several methods in which to validate building envelope compliance. The most common methods are ASHRAE calculations, NFRC labeling or a Simulated Performance Alternative "The 2009 IECC and ASHRAE Standard 90.1-2007,as well as the 2012 IECC and ASHRAE Standard 90.1-2010,contain a number of compliance paths. Choosing an Energy Code Compliance Path TOPIC BRIEF(Resource 2)presents these paths in more detail"(energycodes.gov/resource-center/ace/compliance/step2) Commercial Fenestration Compliance Most commercial projects use the IECC Simulated Performance Alternative method with the help of NFRC approved software THERM 6.3, WINDOW 6.3 or CMA/CMAST. These rate fenestration energy compliance by inputting actual sizes of the windows and doors. http://windows.lbl.gov/software/therm/therm.html http://windows.lbl.gov/software/window/window.html Residential Fenestration Compliance Many residential projects use the same software to achieve envelope compliance(Prescriptive) but unlike the commercial building in the same Climate Zone, actual sizes are not tested. Instead, results are derived from prescribed specimen sizes most common in tract housing projects. However,these specimen sizes('Market Standardization')do NOT reflect the house window sizes.Therefore, to achieve the most accurate energy rating Fleetwood will provide the Simulated Performance Alternative report. Compliance Software The Simulated Performance Alternative is made possible with compliance software such as ResCheck,which is free software offered by the Federal government. However, this software is limited and is not the best product to use with custom home projects. Other products to consider are: • RemRate • RemDesign • EnergyPro RECEIVED 10t/039V18 ASPEN BUILDING DEPARTMENT Energy Consultants Compliance software is most effectively utilized when operated by a trained energy professional. Below is a list of a few firms Fleetwood can recommend: • Title 24 Consultant: Chuck Visnic • Title 24 Consultant: Energy Impacts Gilberto Carrillo 2613 Coronado Drive Title 24 Guys LLC Fullerton, CA 92835 10964 Memory Park Avenue Phone: 714-871-8197 Mission Hills, CA 91345 energyi@pacbell.net Phone:818-850-3385(Office) Phone:818-220-2540(Mobile) • Title 24 Consultant: gilberto@title24guys.com Tom Rotchford, PE, LEED AP Solargy, Inc. • IECC Consultant: 22028 Ventura Blvd., Suite 207 Stephen Mogowski Woodland Hills, CA 91364 Desert Skies Code Compliance Phone:818-347-6096 Ext 110 1576 E. Windsor Drive, Unit E info@solargy.com Gilbert,AZ 85296 Phone:480-489-2692 • Title 24 Consultant: info@buildcompliant.com David Knight Monterey Energy Group 26465 Carmel Rancho Blvd. #8 Carmel, CA 93923 Phone:831-250-0314(Direct) Phone:831-372-8328(Office) info@meg4.com Trade-off Measures Compliance software allows professionals to trade-off lower performing components in one part of the envelope for higher performing components elsewhere. Some of the measures being used are: • Tank-less water heater • Air exchanges • Whole building air leakage(HERS) • Air handler fans • Whole house fans • HVAC ducting inside conditioned space • QII (Quality Insulation Installation) • Floor and wall heating • Interior blinds • Thicker walls/insulation • Attic insulation below the roof deck • Install a PV system (photovoltaic) • Convert garage, attic and basement space into Conditioned Space to reduce the percentage of glass to Conditioned Floor Area Verify that the respective building code allows the measure because some versions of the IECC have greater restrictions. California's Title 24, on the other hand, allows many mechanical trade-offs. ASHRAE? ASHRAE has been around since the late 1800's. Many builders use 'ASHRAE calculations to prove building compliance by means of the total UA Alternative. However,this method is cumbersome and not as accurate as it could be if ONLY the windows were concerned.Therefore NFRC's mandate by the DOE and respective state governments was to create a more reliable and more stringent methodology of compliance determination.As result, the programs developed by LBL (THERM& WINDOW)have commonly replaced ASHRAE calculations. The IECC accepts ASHRAE calculations if done by a qualified engineer on the actual window sizes. Similarly,the IECC allows manufacturers to provide test reports using the NFRC approved THERM 6.3 and WINDOW 6.3 software (But only using Prescriptive standard sizes). NFRC? Fleetwood has successfully tested, and therefore publishes, thousands of NFRC laboratory results based on the Prescriptive sizes. When the "NFRC developed this testing protocol they did so with tract builders in mind. For exarhp0 l il assumed that 7'x 7' patio doors are common. In reality, modern architecture and custom built homes are designed Witl441 '=l 101/039V18 ASPEN BUILDING DEPARTMENT door openings commonly at 20'x 10'and often times much larger. The NFRC Prescriptive values worked well until we started understanding the negative affects it was having on custom projects. Specifically,when only the NFRC Prescriptive or Prescriptive Weighted Average results are used,the house is not being calculated accurately. Fleetwood therefore provides Simulated Performance Alternative reports using THE SAME SOFTWARE AND SAME METHODS the NFRC uses to create the Prescriptive energy reports. The only difference is the actual window sizes are entered and calculated. Supervising Entity Building codes that specify the NFRC as the"Supervising Entity"may interpret the code as requiring NFRC prescriptive labels under NFRC 100 and 200. In these cases, project professionals should work closely with the permitting building department to verify THEIR interpretation. Many building departments throughout the country recognize the Simulated Performance Alternative calculations as more than satisfactory. Compromises Architectural Compromises If a Simulated Performance Alternative energy report is disallowed the architectural integrity of the house is certain to be compromised. Example: Sliding doors in warmer climate zones do not need thermally broken aluminum. If only the Prescriptive results are allowed the architect may be forced to switch to thermal break,which adds wider sight lines, restricts sizes and costs more money(see"The Energy Code Trap"on Fleetwood's website).Additionally, "upgrading"glass can destroy the home's elevation appearance with darker tints or more reflective glazing. In fact, some communities prohibit reflective glass. Homeowner Compromises If the house is forced to use the NFRC Prescriptive results rather than the more accurate results the owner is forced to spend more money on fenestration simply to satisfy ambiguity and inefficiency of the building code. For example, in some parts of the country the owner may be forced to spend tens of thousands of dollars on glass and product"upgrades"that are only needed to offset the tract home energy results simulated by the NFRC. New Construction or Remodel? Whether the house is being constructed from the ground up or is a remodel, energy reports are needed to demonstrate compliance. If the builder is using the Prescriptive method to achieve energy compliance for the house envelope, metal windows will be difficult to pass unless the method is changed to the Performance method wherein software can be used to calculate actual size energy results—Fleetwood can provide this. Custom Report Certification & Labeling Many building departments do not require all fenestration products to carry a label, let alone an NFRC label. However, Fleetwood will provide an NFRC label for all tested products.Additionally, along with the Simulated Performance Alternative report Fleetwood will provide custom labels if desired. Each will clearly state: U-Factor, SHGC,Air Infiltration and Condensation Resistance (CR). Each label will clearly indicate the values as Manufacturer Certified. Conclusion If a Simulated Performance Alternative report is disallowed the NFRC prescriptive results must be disallowed too as both were created from the same software.The only difference is actual sizes were used. If the NFRC calculated these factors they would achieve THE EXACT results as in our custom actual size reports ' Fundamentals Handbook chapter 31, pg. 31.4, or 2001 Handbook chapter 30, pg. 30.4: "U-Factor(Overall Coefficient of Heat Transfer)" "The NFRC was designed as a means of helping communities build Energy Efficient homes. Below is a link to the NFRC website with helpful documents: http://nfrccom m unity.site-yrn.com/?page=Techdocs EXCERPT: The validity of the software is held in high regard by the NFRC. "For NFRC Certification of fenestration products,either WINDOW5/THERM5 or WINDOW6/THERM6 maybe used for the simulation of those products.However,after July 1, 2011 c e ruc rt WINDOW6/THERM6 will be authorized for NFRC Certification Ek-PILI110PDO/18 ASPEN BUILDING DEPARTMENT Energy Report (Weighted Average) The information below is a typical example of what Fleetwood provides with every quote. The Simulated Performance Alternative Energy Report is a more accurate energy report than ASHRAE or simply reporting Prescriptive. Results are computed with the same software NFRC uses to rate Prescriptive Energy Ratings, but using actual sizes of the windows and doors: FLEETWOOD 6. Job Name:Energy Example Customer FLEETWOOD WINDOWS AND DOORS Quote: #398125 MANUFACTURER ENERGY REPORT Job Specific Summary The U-Factor and SHGC values provided in this report comply with NFRC 100 and NFRC 200-A summary of these values has been presented as a Weighted Average to assist dealers in assessing the general impact if changes are made to the Window or Door order.e.g.glass type change. Additionally.Fleetwood has provided a column of Simulated Performance Alternative energy values that may be a useful tool in illustrating how the size of a Door or Window will impact the true living conditions inside the home By request.Fleetwood will provide Manufacturer Labels for such values For more information about Simulated Performance Alternative visit Fleetwood's website:under the Designers/Energy section then select Energy Code Compliance. Product Type 1 Category Information (Metric/SI version available upon request) Category: Series: Item: Glazing"; VT: NFRC ;tauyladerfarma"p GlazingArea Allemali e 0-Fadrx/SHGC 0-Facto SHGC Imo)* ' DOOR Series 3070-7 2-0 A 047 0.32 0.21 0.27 0.24 22042 123w1381^ DOOR Series 3300-T 1-0 A 0.49 0.34 022 028 024 138.00 1144.13er1 DOOR Series 3900-T 6-0 A 0.34 041 017 030 021 104 72 11160301N DOOR Weighted Average (1t2)-463 14 NFRC: U-Factoc 0.346 SHGC:0.204 Simard AanA11p' 0.28 0.233 witin Category: Series: Item: Glazing': VT: NFRC Simulated Perfomfance GlazingArea U-F WO,1SHGC UFactori SHGC Ift2)*QtY' FIXED Series 3850-F 3-0 A 0 55 0.23 024 022 025 72 22 Ikir,c:" Undefined Weighted Average (ft2).72.22 NFRC U-Factor 0.23 SHGC 0.24 Simulated PMormante 0.22 0.25 Allernaave Category: Series: Item: Glazing': VT: NFRC SonoiolldPorto as a Glazing Area AnamatM uFacror 1 SHGC u-Factor f SHGC (ft21 QN. FIXED Series 250-T 5-0 B 0 53 0.29 0.23 0 27 0 24 72.22 Iepd3ot1 FIXED Series 3800-T 4-0 B 0.55 0.27 0.24 0.26 0.25 72.22 gloom WINDOW Weighted Average (ft2):144.44 NFRC. U-Factor. 0.28 SHGC:0.235 Simulated Performance 0 28 0.245 Al:ematrre The"Performance method"for certification is recommended;wherein envelope components can be"traded off'to allow the desired windows and doors. (See Energy Code Compliance for a list of common trade-offs.) Total Weighted Average Total Glazing Area NFRC U-Factor 0.32 SHGC.0 21 (f12)679 8 Senulated Performance 0 27 0.24 Alternative The overall produot U-Facia comWlnes the center-or-pass,produd frame and edge-Of-glass U-Fades in a frame mode. Nde All U-facto,and SHGC values are Shown well non-enled glass.Tint a,glass cob further reduce the SHGC values *Glazing Type. Description. COG U-Valve I SHGC A CLR5B366189TG 1'.Clear Cardinal 366 Ernm-T_0.5argon_Clear Cardnal'89 6mm-T 0.19 0.26 B CLR6B366189G7 1.25'.Clear Cardinal 3666mm-T 0.75argon pear Cardinal i896mm-T 02 026 NFRC Prescriptive Sizes: Series 'Ca,epuraam mho z Height(Int Westwood250 Erred 47x59 Norwood 3070-T OX a XX 76 x 78 Glacier 3300.1 OX or XX 78 x 78 Kona 3800-T Fired 47 x 59 3850.F Fired 47x59 Atlantic 3900-7 OXa XX 37x 82 References V-Fetfa The rated Winter u-r actor 04 the fenestrebon product.In etumr-52•'F. SHGC Solar Heal Gain Coemoere v7 Visible Transmittance pea 012) The area or the surface in sware feet NFRC National Feneslretrtn Rating Cwnal w raga (ECG International Energy Conservation Code RECEIVE E'. E I'f E 10/09/18 ASPEN BUILDING DEPARTMENT Temporary Label Below are examples of temporary labels available for Fenestration Values: NFRC Default Fleetwood Simulated Performance Alternative y; FLEETWOOD Manufacturer's x Windows and Doors Fenestration Default Values LEETWO OD Norwood 3070-T FLEETWOOD r L MANUFACTURER LABEL I Product Type DOOR-MS ""° 0i0tn Aluminum wrtnermal Breaks Windows&Doors PRODUCT: Norwood 3070-T aur9.c..[m.ds EgIMIE Double Glazing-Argon FM•Low E Norwood 3070-T TYPE,DOOR-MS CPO,. Product Type DOOR-MS 230"x 138"(584mm x 350mm) ENERGY PERFORMANCE RATINGS Aluminum w/Tbemlal Breaks Aluminum w/Tmermal Breaks U-Factor(U.S.'I PI Solar Meet Gain Coefficientr-C'ee1 Carona!366 6mm n.T D Sargon Cam Cana d9 6mrr.- Double Glazing-Argon FIN-Low E 0.32 0.21 I ENERGY PERFORMANCE VALUES I ENERGY PERFORMANCE RATINGS U-Facler(U S%(-P) Solar Heat Gam Coetx,e-• (Simulated Performance Alternative) ADDITIONAL PERFORMANCE RATINGS u-Petra Solar Meat Gem CoeBnenr Visible Transmittance Arr Leakage(U S rl-P) 0.59 0.63 0.47 5 0.3 0.27 1.53 0.24 Cendensahon Resistance ADDITIONAL PERFORMANCE RATINGS 44 Visible Transmittance Ar leakage 0.47 5 0.3 1.5 (U Sn-P) (M.10US!) Condensation Resistance 44 — r ma.m.w.arac runs... r.swsw.ur+ r.v«r.um..r Coaw.wr.r0•.r...err..e.wws.sr ......c.. .�.r OS. rw wmr hlaMo. r crass...tatha Ens.P ..r err.r.....w.re s. r..—n.N , ...r... I eu.m*r. .a r Coat r ry... erasre.uyr car«r..aa n.ww.r�rn�.ow...,w..n.er...o...cat.ma .w..^ w.wwrnw .ur . .ra.Mselam ,rr...r« the <.m.•.o�.....u RECEIVED 10/09/18 ASPEN BUILDING DEPARTMENT