NFRC WINDOW ENERGY RATINGS AND BUILDING ENERGY CODES NFRC Webinar/Membership Meeting March 25, 2014
LEARNING OBJECTIVES 1. Understand the 2012 IECC and ASHRAE 90.1-2010 fenestration energy requirements for commercial construction. 2. Understand the role of NFRC related to providing high-performance fenestration for energy-efficient commercial construction. 3. Understand the NFRC 100 and NFRC 200 documents, the NFRC commercial fenestration certification program (CMA), and how CMA enables energy codes compliance. 4. Understand how the NFRC Component Modeling Approach (CMA) Program and associated software (CMAST) are used as design and compliance tools for developing valid specifications for fenestration energy-related performance requirements. 2
AIA CES INFORMATION The National Fenestration Rating Council is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-aia members are available on request. This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.
Copyright Materials This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is prohibited. National Fenestration Rating Council 2012
FOR AIA CREDIT Email rmcgowan@nfrc.org your name and AIA number I will record/report to AIA 1.5 CEUs 5
BUILDING ENERGY CODES Incredibly complex codes Numerous building components to verify Sometimes hard to identify requirement and component value No time to look for either! 6
Building Energy Codes Ensures building performance Codes are laws enacted by state legislatures or local jurisdictions IECC and ASHRAE most common Most states will soon move to IECC 2012/ASHRAE 90.1-2010 Require window rating and labeling Prescriptive or performance New or renovation 7
NFRC 100 (U-factor) and NFRC 200 (SHGC) are required in: International Energy Conservation Code (IECC) Also state developed codes (CA, WA, FL, etc.) ASHRAE 90.1 ENERGY STAR USGBC-LEED requires ASHRAE 90.1-2010 8
Residential or Small Commercial NFRC 100/200 = Sticker on each window! 9
COMMERCIAL ONLY-NOT RESIDENTIAL NFRC 100/200 = One Label Certificate For each project 10
BUILDING ENERGY CODE NFRC 100 and NFRC 200 are instructions on how to determine whole window energy performance Center of glass is not acceptable 11
LABELED = CERTIFIED IECC Definition 12
LABELED = CERTIFIED ASHRAE 90.1 Definition 13
USE OCEAN WEB SITE TO DETERMINE CODE IN US http://energycodesocean.org/code-status Click on state to learn energy code specifics 14
Residential Code Compliance IECC 09 is residential energy code for most states IECC 2012 will be adopted by most states in the future IECC allows two window rating methods Default (punitive) NFRC 100 and 200 ratings IECC includes commercial code also 15
NFRC in IECC 16
IECC CLIMATE ZONES 17
IECC 09 RESIDENTIAL 18
IECC 2012-RESIDENTIAL 19
IECC Window Defaults 2012 IECC window Defaults Punitive! Project not likely complaint New: VT defaults 20
IECC 06 FOR TN (FROM RECA SITE) 21
NFRC PARTICIPATES WITH: Building Code Appliance Project (BCAP) http://bcap-energy.org/ Responsible Energy Codes Alliance (RECA) http://reca-codes.org/ Obtain IECC compliance guides: http://recacodes.org/iecc-compliance-guides.php BCAP and RECA advocate for better energy codes nationally ASHRAE 90.1 organization member, full committee and envelope subcommittee 22
WINDOW ENERGY INFORMATION Efficient Window Collaborative (EWC) www.efficienctwindows.org Use window selection tool to compare annual energy cost of one window to another Windows for High-Performance Commercial Buildings http://www.commercialwindows.org Window Coverings and Attachments http://www.efficientwindowcoverings.org/ Info on shades, blinds, awnings 23
ENERGY STAR-residential only Until December 31, 2014 Begins January 1, 2015 Northern criteria 1/1/16 24
Commercial Code Compliance IECC allows ASHRAE 90.1 as alternate ASHRAE 90.1-07 is most common building energy code Ways to satisfy building energy codes Default (punitive) NFRC 100 and 200 based ratings 25
ASHRAE 90.1 NFRC Statements 26
NFRC IN ASHRAE 90.1 27
Energy Code Requirements for ASHRAE 90.1-07 28
IECC AND ASHRAE 90.1 IECC allows ASHRAE 90.1 as alternate Confirm with local code official what is being enforced. 29
IECC 09, Commercial 30
IECC 2012-COMMERCIAL Note: frame material dependency removed 31
No NFRC ratings, use defaults: 32
Window Energy Rating Confirmation NFRC offers a simple verification methods Residential Online database Look up CPD number Commercial Online database Look up project label certificate 33
NFRC Makes Code Enforcement Easy Developed easily verifiable ratings Residential Online database with 9.5 million rated products Commercial Online database enabling project specific label certificates to be downloaded at no charge 34
NFRC RESIDENTIAL RATING CONFIRMATION www.nfrc.org Select verify ratings Enter CPD # 35
Commercial Compliance Ask Manufacturer/Builder for NFRC Label Certificate Found on NFRC web site (www.nfrc.org ) Electronic (PDF) No cost to download/access/view Caution NFRC offers bid report Preliminary document, accept during plan review Insist on label certificate at occupancy 36
Check NFRC Label Certificate for Compliance 37
Confirm U, SHGC on Label Certificate 38
Where do I get the label certificates? NFRC posts all label certificates online as energy codes require Easy to use No cost Downloadable adobe documents [live demo on web] 39
Verify Commercial Window Ratings Go here: www.nfrc.org Click on commercial link: 40
NFRC HAS NEW, DEDICATED COMMERCIAL CODE WEB SITE http://www.nfrc.org/commercial/code-officials/ 41
Enter Search Criteria 42
Click on Label Certificate Link for Project 43
Review U-factor and SHGC Values or Download Label Certificate 44
Compare to NFRC Label Certificate 45
What if no certificate is available? Codes require default values be assigned You may direct manufacturers to use NFRC ratings Put manufacturers in contact with NFRC 46
If no label certificate Manufacturers may offer test reports per NFRC 100/200 Difficult to confirm May not be current NFRC does not recommend this method 47
Defaults May Be Assigned Code official may simply assign defaults 48
Unacceptable Window Energy Performance documents U-factors and SHGC on drawings Marketing literature Center of glass values Documents from previous jobs Code officials determine what is acceptable per the energy code! Architects can specify NFRC ratings to ensure code compliance 49
NOT ACCEPTABLE 50
About NFRC Formed by industry in 1989 To provide standardized fenestration energy performance ratings Educational non-profit public/private organization, not a trade association, 501 C3 16on staff in five states, HQ near Washington DC 750participants (manufacturers labeling product) 260 members (vote at meetings, develop standards) Members may be: Fenestration and related building industry State energy offices Design professionals Utilities, consumer organizations Anyone with a fenestration interest 51
Windows Matter! Fenestration consumes 32% of that primary energy : 52
NFRC PROVIDES REQUIRED RATINGS For Building Energy Codes For Manufacturers to compete fairly 53
NFRC Rating Determination Computer simulation is the basis of all ratings Simulation performed at standardized sizes & environmental conditions Simulation generates a whole-product rating Simulated U-factors validated by physical testing 4000 tests/year Always whole product rating! 54
55 ENERGY SIMULATION SOFTWARE Residential WINDOW 6.3 and THERM 6.3 Written by University of CA-Lawrence Berkeley National Labs Commercial Component Modeling Approach Software Tool Written by NFRC WINDOW is embedded THERM files are imported
THERM Profiles use CAD drawings CAD drawing file, section view, curtain wall 56
THERM assigns properties THERM simulation file, profile view, curtain wall 57
NFRC Rating Documents and Indices U-factor (thermal transmission) NFRC 100 VT (Visible Transmittance) NFRC 200 SHGC (Solar Heat Gain) NFRC 200 58
NFRC Rating Documents and Indices Air Leakage (Air infiltration, no exfiltration) NFRC 400 CR (Condensation Resistance) NFRC 500 59
60 SIMULATION AND TESTING All products are simulated Simulated values appear on labels One product/product line tested every 4 years About 4,000 tests each year Simulated U-factor compared to tested U- factor +10% variance allowed
61 RESIDENTIAL RATING PROCESS Product Certification Program Governs rating and labeling Laboratory Accreditation Program Governs test and simulation labs Certification Accreditation Program Governs Inspection Agencies
62 RESIDENTIAL PROGRAM 12 test labs US, Canada, South Africa 20 simulation labs US, Canada, Philippines
63 NFRC RESIDENTIAL PROGRAM 750 participants 95% of residential market Windows, doors, skylights, tubular daylighting devices, some blinds/frits 9,000 product lines 9 million product options Only about 1% actual produced Must have NFRC ratings for energy codes and ENERGY STAR
Residential Quality Control Compliance Assurance and Penalties for non-compliance
U-FACTOR TESTING
Commercial Fenestration Energy Rating Program NFRC has only allowable energy rating software May use residential method to rate for small commercial Component Modelling Approach Software Tool (CMAST) LBNL s WINDOW program embedded LBNL s THERM program provided spacer and frame component modules for upload 66
Commercial Fenestration Energy Simulation Program Component Modeling Approach ( CMA ) Program 67
CMAST Concept Glazing component Frame component Spacer component Glazing infill / Center of Glazing assembly Frame system / Frame assembly Spacer system / spacer assembly PRODUCT CONFIGURATION Overall product rating calculation 68
CMAST U-factor, SHGC Calculation Screen Shot 69
70 NFRC CMA Label Certificate (page 2):
Commercial Participants 31 Frame Manufacturers 6000 components 5 Spacer Manufacturers 200 spacer components 45 Glazing participants 2700 glass component NFRC accepted in LBNL IGDB 71
Commercial Ratings 313 Label Certificates 6000 unique product ratings Need more! 72
NFRC Accredited Labs 20 simulation labs, 4 in Canada Perform component simulations 9 Accredited Calculation Entities (ACES), 1 in Canada Issue LCs 11 Testing labs, 1 in Canada 73 Test whole product Validate U-factor for components
Commercial Fenestration Quality Control ACE s audited every two years by staff Includes frame, spacer manufacturers Participate in interlaboratory study Test, simulation labs Audited every two years Participate in interlaboratory studies each year Label Certificates 74 Audited during inspections Confirm construction documents match what is on Label Certificate
Compliance Program NFRC can fine for mislabelling $5000 per incident Follow up with audit if necessary Revocation possible if egregious 75
New: ComCheck Prompts for NFRC Rating 76
Please contact NFRC with any questions NFRC Webpage: Ray McGowan Sr. Program Manager rmcgowan@nfrc.org 240-821-9510 www.nfrc.org 77