ANSI/ASHRAE/IESNA Addendum y to ANSI/ASHRAE/IESNA Standard

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1 ANSI/ASHRAE/IESNA Addendum y to ANSI/ASHRAE/IESNA Standard ASHRAE STANDARD Energy Standard for Buildings Except Low-Rise Residential Buildings Approved by the ASHRAE Standards Committee on June 24, 2006; by the ASHRAE Board of Directors on June 29, 2006; by IESNA on June 18, 2006; and by the American National Standards Institute on March 3, This standard is under continuous maintenance by a Standing Standard Project Committee (SSPC) for which the Standards Committee has established a documented program for regular publication of addenda or revisions, including procedures for timely, documented, consensus action on requests for change to any part of the standard. The change submittal form, instructions, and deadlines may be obtained in electronic form from the ASHRAE Web site, or in paper form from the Manager of Standards. The latest edition of an ASHRAE Standard may be purchased from ASHRAE Customer Service, 1791 Tullie Circle, NE, Atlanta, GA orders@ashrae.org. Fax: Telephone: (worldwide), or toll free (for orders in US and Canada). Copyright 2006 ASHRAE, Inc. ISSN Illuminating Engineering Society of North America American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc Tullie Circle NE, Atlanta, GA

2 ASHRAE Standing Standard Project Committee 90.1 Cognizant TC: TC 7.6, Systems Energy Utilization SPLS Liaison: Hugh F. Crowther ASHRAE Staff Liaison: Steven C. Ferguson IESNA Liaison: Rita M. Harrold Jerry W. White, Jr., Chair* Ned B. Heminger Michael I. Rosenberg* James M. Calm, Vice-Chair* Randall T. Higa* Steven Rosenstock Karim Amrane* John F. Hogan* Robert D. Ross* Wagdy A.Y. Anis William G. Holy* David A. Schaaf, Jr.* Anthony M. Arbore Hyman M. Kaplan* Leonard C. Sciarra* William P. Bahnfleth* Larry Kouma* Bipin Vadilal Shah* Peter A. Baselici* Ronald D. Kurtz* Stephen V. Skalko* Van D. Baxter Samantha H. LaFleur Frank A. Stanonik* Denise M. Beach Michael D. Lane* Joseph K. Ting* Donald L. Beaty* Dean E. Lewis Cedric S. Trueman* Valerie L. Block* Richard Lord Martha G. VanGeem Donald M. Brundage* Kenneth Luther* Carl Wagus* Ernest A. Conrad Ronald Majette* McHenry Wallace, Jr.* Charles C. Cottrell* Itzhak H. Maor* Richard D. Watson* Roy Crane* Carol E. Marriott* David Weitz* Joseph J. Deringer* R. Christopher Mathis* Robin Wilson* Keith I. Emerson* Merle F. McBride Michael W. Woodford Drake H. Erbe Michael W. Mehl Donald R. Wulfinghoff* Thomas A. Farkas* Harry P. Misuriello Stanley W. Zajac* Alan Fraser* Louis J. Molinini* James A. Garrigus* John Montgomery* Jason J. Glazer* Frank T. Morrison S. Pekka Hakkarainen Frank Myers* Katherine G. Hammack* Ronald G. Nickson* Susanna S. Hanson Jim A. Ranfone* Richard V. Heinisch* Eric E. Richman* *Denotes members of voting status when this standard was approved for publication.

3 Richard D. Hermans, Chair David E. Knebel, Vice-Chair Donald L. Brandt Steven T. Bushby Paul W. Cabot Hugh F. Crowther Samuel D. Cummings, Jr. Robert G. Doerr Hakim Elmahdy Roger L. Hedrick John F. Hogan Frank E. Jakob Stephen D. Kennedy ASHRAE STANDARDS COMMITTEE Jay A. Kohler James D. Lutz Merle F. McBride Mark P. Modera Cyrus H. Nasseri Stephen V. Santoro Stephen V. Skalko David R. Tree Jerry W. White, Jr. James E. Woods William E. Murphy, BOD ExO Ronald E. Jarnagin, CO Claire B. Ramspeck, Assistant Director of Technology for Standards and Special Projects SPECIAL NOTE qüáë=^ãéêáå~å=k~íáçå~ä=pí~åç~êç=e^kpf=áë=~=å~íáçå~ä=îçäìåí~êó=åçåëéåëìë=ëí~åç~êç=çéîéäçééç=ìåçéê=íüé=~ìëéáåéë=çñ=íüé=^ãéêáå~å pçåáéíó=çñ=eé~íáåöi=oéñêáöéê~íáåö=~åç=^áêj`çåçáíáçåáåö=båöáåééêë=e^peo^bfk=`çåëéåëìë=áë=çéñáåéç=äó=íüé=^ãéêáå~å=k~íáçå~ä=pí~åç~êçë fåëíáíìíé=e^kpffi=çñ=ïüáåü=^peo^b=áë=~=ãéãäéê=~åç=ïüáåü=ü~ë=~ééêçîéç=íüáë=ëí~åç~êç=~ë=~å=^kpi=~ë= ëìäëí~åíá~ä=~öêééãéåí=êé~åüéç=äó ÇáêÉÅíäó=~åÇ=ã~íÉêá~ääó=~ÑÑÉÅíÉÇ=áåíÉêÉëí=Å~íÉÖçêáÉëK=qÜáë=ëáÖåáÑáÉë=íÜÉ=ÅçåÅìêêÉåÅÉ=çÑ=ãçêÉ=íÜ~å=~=ëáãéäÉ=ã~àçêáíóI=Äìí=åçí=åÉÅÉëë~êáäó=ìå~åáãáíóK `çåëéåëìë=êéèìáêéë=íü~í=~ää=îáéïë=~åç=çäàéåíáçåë=äé=åçåëáçéêéçi=~åç=íü~í=~å=éññçêí=äé=ã~çé=íçï~êç=íüéáê=êéëçäìíáçåkò=`çãéäá~ååé=ïáíü=íüáë ëí~åç~êç=áë=îçäìåí~êó=ìåíáä=~åç=ìåäéëë=~=äéö~ä=àìêáëçáåíáçå=ã~âéë=åçãéäá~ååé=ã~åç~íçêó=íüêçìöü=äéöáëä~íáçåk ^peo^b=çäí~áåë=åçåëéåëìë=íüêçìöü=é~êíáåáé~íáçå=çñ=áíë=å~íáçå~ä=~åç=áåíéêå~íáçå~ä=ãéãäéêëi=~ëëçåá~íéç=ëçåáéíáéëi=~åç=éìääáå=êéîáéïk ^peo^b=pí~åç~êçë=~êé=éêéé~êéç=äó=~=mêçàéåí=`çããáííéé=~ééçáåíéç=ëééåáñáå~ääó=ñçê=íüé=éìêéçëé=çñ=ïêáíáåö=íüé=pí~åç~êçk=qüé=mêçàéåí `çããáííéé=`ü~áê=~åç=sáåéj`ü~áê=ãìëí=äé=ãéãäéêë=çñ=^peo^bx=ïüáäé=çíüéê=åçããáííéé=ãéãäéêë=ã~ó=çê=ã~ó=åçí=äé=^peo^b=ãéãäéêëi=~ää ãìëí=äé=íéåüåáå~ääó=èì~äáñáéç=áå=íüé=ëìäàéåí=~êé~=çñ=íüé=pí~åç~êçk=bîéêó=éññçêí=áë=ã~çé=íç=ä~ä~ååé=íüé=åçååéêåéç=áåíéêéëíë=çå=~ää=mêçàéåí `çããáííééëk= qüé=j~å~öéê=çñ=pí~åç~êçë=çñ=^peo^b=ëüçìäç=äé=åçåí~åíéç=ñçêw ~K=áåíÉêéêÉí~íáçå=çÑ=íÜÉ=ÅçåíÉåíë=çÑ=íÜáë=pí~åÇ~êÇI ÄK=é~êíáÅáé~íáçå=áå=íÜÉ=åÉñí=êÉîáÉï=çÑ=íÜÉ=pí~åÇ~êÇI ÅK=çÑÑÉêáåÖ=ÅçåëíêìÅíáîÉ=ÅêáíáÅáëã=Ñçê=áãéêçîáåÖ=íÜÉ=pí~åÇ~êÇI ÇK=éÉêãáëëáçå=íç=êÉéêáåí=éçêíáçåë=çÑ=íÜÉ=pí~åÇ~êÇK DISCLAIMER ^peo^b=ìëéë=áíë=äéëí=éññçêíë=íç=éêçãìäö~íé=pí~åç~êçë=~åç=dìáçéäáåéë=ñçê=íüé=äéåéñáí=çñ=íüé=éìääáå=áå=äáöüí=çñ=~î~áä~ääé=áåñçêã~íáçå=~åç=~ååééíéç áåçìëíêó=éê~åíáåéëk=eçïéîéêi=^peo^b=ççéë=åçí=öì~ê~åíééi=åéêíáñói=çê=~ëëìêé=íüé=ë~ñéíó=çê=ééêñçêã~ååé=çñ=~åó=éêççìåíëi=åçãéçåéåíëi=çê ëóëíéãë=íéëíéçi=áåëí~ääéçi=çê=çééê~íéç=áå=~ååçêç~ååé=ïáíü=^peo^bûë=pí~åç~êçë=çê=dìáçéäáåéë=çê=íü~í=~åó=íéëíë=åçåçìåíéç=ìåçéê=áíë=pí~åç~êçë çê=dìáçéäáåéë=ïáää=äé=åçåü~ò~êççìë=çê=ñêéé=ñêçã=êáëâk ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDS ^peo^b=pí~åç~êçë=~åç=dìáçéäáåéë=~êé=éëí~ääáëüéç=íç=~ëëáëí=áåçìëíêó=~åç=íüé=éìääáå=äó=çññéêáåö=~=ìåáñçêã=ãéíüçç=çñ=íéëíáåö=ñçê=ê~íáåö éìêéçëéëi=äó=ëìööéëíáåö=ë~ñé=éê~åíáåéë=áå=çéëáöåáåö=~åç=áåëí~ääáåö=éèìáéãéåíi=äó=éêçîáçáåö=éêçééê=çéñáåáíáçåë=çñ=íüáë=éèìáéãéåíi=~åç=äó=éêçîáçáåö çíüéê=áåñçêã~íáçå=íü~í=ã~ó=ëéêîé=íç=öìáçé=íüé=áåçìëíêók=qüé=åêé~íáçå=çñ=^peo^b=pí~åç~êçë=~åç=dìáçéäáåéë=áë=çéíéêãáåéç=äó=íüé=åééç=ñçê=íüéãi ~åç=åçåñçêã~ååé=íç=íüéã=áë=åçãéäéíéäó=îçäìåí~êók få=êéñéêêáåö=íç=íüáë=pí~åç~êç=çê=dìáçéäáåé=~åç=áå=ã~êâáåö=çñ=éèìáéãéåí=~åç=áå=~çîéêíáëáåöi=åç=åä~áã=ëü~ää=äé=ã~çéi=éáíüéê=ëí~íéç=çê=áãéäáéçi íü~í=íüé=éêççìåí=ü~ë=äééå=~ééêçîéç=äó=^peo^bk

4 (This foreword is not part of this standard. It is merely informative and does not contain requirements necessary for conformance to the standard. It has not been processed according to the ANSI requirements for a standard and may contain material that has not been subject to public review or a consensus process. Unresolved objectors on informative material are not offered the right to appeal at ASHRAE or ANSI.) FOREWORD The high albedo roof provisions of Standard were reviewed with the intent of coordinating with Standard It is recommended to modify the exception to Section by adding the ASTM test method E 1980-Standard Practice for Calculating Solar Reflectance Index (SRI) of Horizontal and Low Sloped Opaque Surfaces. This test method employs the use of the solar reflectance and thermal emittance values of a roof product in the ASTM E1980 calculation to derive the SRI. The SRI minimum value of 82 was chosen as it represents the rounded value when applying the two current minimum values, solar reflectance of 0.70 and thermal emittance of 0.75, when applied to the calculation at medium wind speed condition. The reasons for this are twofold. First, this is another test method that will allow additional roof products to meet the high albedo roof requirements of Standard 90.1 and in our view more paths toward compliance will encourage energy efficiency. Second, Standard contains this test method; therefore, there is an attempt to bring both standards into near agreement on the subject of high albedo roof provisions. It is proposed to modify Chapter 12, Normative References to introduce ASTM E1980 in the listing of ASTM references. Note: In this addendum, changes to the current standard are indicated in the text by underlining (for additions) and strikethrough (for deletions) unless the instructions specifically mention some other means of indicating the changes. Only these changes are open for review and comment at this time. Additional material is provided for context only and is not open for comment except as it relates to the proposed substantive changes. TABLE Roof U-Factor Multipliers for Exception to where U roofadj Climate Zone Roof U-Factor Multiplier through in accordance with the Solar Reflectance Index method listed below, other than roofs with ventilated attics or roofs with semiheated spaces, the U-factor of the proposed roof shall be permitted to be adjusted using Equation 5-1 for demonstrating compliance: U roofadj = U roofproposed Factor roofmultiplier (5-1) = the adjusted roof U-factor for use in demonstrating compliance U roofproposed = the U-factor of the proposed roof, as designed Factor roofmultiplier = the roof U-factor multiplier from Table Solar Reflectance Test Methods: ASTM E903, ASTM E1175, or ASTM E1918. Thermal Emittance Test Methods: ASTM C835, ASTM C1371, or ASTM E408. Solar Reflectance Index Method: ASTM E1980 calculated at medium wind speed conditions. Add the following reference to Section 12: American Society for Testing and Materials, 100 Barr Harbor Dr., West Conshohocken, PA ASTM E1980-(2001), Standard Practice for Calculating Solar Reflectance Index of Horizontal and Low Sloped Opaque Surfaces Addendum y to (I-P and SI Editions) Revise as follows: Roof Insulation. All roofs shall comply with the insulation values specified in Tables through Skylight curbs shall be insulated to the level of roofs with insulation entirely above deck or R-5, whichever is less. Exception to : For roofs where the exterior surface has a minimum total solar reflectance of 0.70 when tested in accordance with one of the solar reflectance test methods listed below and has a minimum thermal emittance of 0.75 when tested in accordance with one of the thermal emittance test methods listed below, or a minimum Solar Reflective Index of 82 when determined Revise Table G3.1, 5 Building Envelope, exception (c) as follows:... c. For exterior roofs, the roof surface may be modeled with a reflectance of 0.45 if the reflectance of the proposed design roof is greater than 0.70 and its emittance is greater than 0.75, or it has a minimum SRI of 82. Reflectance values shall be based on testing in accordance with ASTM E903, ASTM E1175, or ASTM E1918, and the emittance values shall be based on testing in accordance with ASTM C835, ASTM C1371, or ASTM E408, and SRI shall be based on ASTM E1980 calculated at medium wind speed. All other roof surfaces shall be modeled with a reflectance of ANSI/ASHRAE/IESNA Addendum y to ANSI/ASHRAE/IESNA Standard

5 POLICY STATEMENT DEFINING ASHRAE S CONCERN FOR THE ENVIRONMENTAL IMPACT OF ITS ACTIVITIES ^peo^b=áë=åçååéêåéç=ïáíü=íüé=áãé~åí=çñ=áíë=ãéãäéêëû=~åíáîáíáéë=çå=äçíü=íüé=áåçççê=~åç=çìíçççê=éåîáêçåãéåík=^peo^bûë ãéãäéêë= ïáää= ëíêáîé= íç= ãáåáãáòé= ~åó= éçëëáääé= ÇÉäÉíÉêáçìë= ÉÑÑÉÅí= çå= íüé= áåçççê= ~åç= çìíçççê= ÉåîáêçåãÉåí= çñ= íüé= ëóëíéãë= ~åç ÅçãéçåÉåíë= áå= íüéáê= êéëéçåëáäáäáíó= ïüáäé= ã~ñáãáòáåö= íüé= ÄÉåÉÑáÅá~ä= ÉÑÑÉÅíë= íüéëé= ëóëíéãë= éêçîáçéi= ÅçåëáëíÉåí= ïáíü= ~ÅÅÉéíÉÇ ëí~åç~êçë=~åç=íüé=éê~åíáå~ä=ëí~íé=çñ=íüé=~êík ^peo^bûë=ëüçêíjê~åöé=öç~ä=áë=íç=éåëìêé=íü~í=íüé=ëóëíéãë=~åç=åçãéçåéåíë=ïáíüáå=áíë=ëåçéé=çç=åçí=áãé~åí=íüé=áåçççê=~åç çìíçççê= ÉåîáêçåãÉåí= íç= ~= ÖêÉ~íÉê= ÉñíÉåí= íü~å= ëééåáñáéç= Äó= íüé= ëí~åç~êçë= ~åç= ÖìáÇÉäáåÉë= ~ë= Éëí~ÄäáëÜÉÇ= Äó= áíëéäñ= ~åç= çíüéê êéëéçåëáääé=äççáéëk ^ë= ~å= çåöçáåö= Öç~äI= ^peo^b= ïáääi= íüêçìöü= áíë= pí~åç~êçë= `çããáííéé= ~åç= ÉñíÉåëáîÉ= íéåüåáå~ä= ÅçããáííÉÉ= ëíêìåíìêéi ÅçåíáåìÉ=íç=ÖÉåÉê~íÉ=ìéJíçJÇ~íÉ=ëí~åÇ~êÇë=~åÇ=ÖìáÇÉäáåÉë=ïÜÉêÉ=~ééêçéêá~íÉ=~åÇ=~ÇçéíI=êÉÅçããÉåÇI=~åÇ=éêçãçíÉ=íÜçëÉ=åÉï ~åç=êéîáëéç=ëí~åç~êçë=çéîéäçééç=äó=çíüéê=êéëéçåëáääé=çêö~åáò~íáçåëk qüêçìöü=áíë=handbooki=~ééêçéêá~íé=åü~éíéêë=ïáää=åçåí~áå=ìéjíçjç~íé=ëí~åç~êçë=~åç=çéëáöå=åçåëáçéê~íáçåë=~ë=íüé=ã~íéêá~ä=áë ëóëíéã~íáå~ääó=êéîáëéçk ^peo^b=ïáää=í~âé=íüé=äé~ç=ïáíü=êéëééåí=íç=çáëëéãáå~íáçå=çñ=éåîáêçåãéåí~ä=áåñçêã~íáçå=çñ=áíë=éêáã~êó=áåíéêéëí=~åç=ïáää=ëééâ çìí=~åç=çáëëéãáå~íé=áåñçêã~íáçå=ñêçã=çíüéê=êéëéçåëáääé=çêö~åáò~íáçåë=íü~í=áë=ééêíáåéåíi=~ë=öìáçéë=íç=ìéç~íáåö=ëí~åç~êçë=~åç ÖìáÇÉäáåÉëK qüé= ÉÑÑÉÅíë= çñ= íüé= ÇÉëáÖå= ~åç= ëéäéåíáçå= çñ= ÉèìáéãÉåí= ~åç= ëóëíéãë= ïáää= ÄÉ= ÅçåëáÇÉêÉÇ= ïáíüáå= íüé= ëåçéé= çñ= íüé= ëóëíéãûë áåíéåçéç=ìëé=~åç=éñééåíéç=ãáëìëék=qüé=çáëéçë~ä=çñ=ü~ò~êççìë=ã~íéêá~äëi=áñ=~åói=ïáää=~äëç=äé=åçåëáçéêéçk ^peo^bûë= éêáã~êó= ÅçåÅÉêå= Ñçê= ÉåîáêçåãÉåí~ä= áãé~åí= ïáää= ÄÉ= ~í= íüé= ëáíé= ïüéêé= ÉèìáéãÉåí= ïáíüáå= ^peo^bûë= ëåçéé çééê~íéëk= eçïéîéêi= ÉåÉêÖó= ëçìêåé= ëéäéåíáçå= ~åç= íüé= éçëëáääé= ÉåîáêçåãÉåí~ä= áãé~åí= ÇìÉ= íç= íüé= ÉåÉêÖó= ëçìêåé= ~åç= ÉåÉêÖó íê~åëéçêí~íáçå=ïáää=äé=åçåëáçéêéç=ïüéêé=éçëëáääék=oéåçããéåç~íáçåë=åçååéêåáåö=éåéêöó=ëçìêåé=ëéäéåíáçå=ëüçìäç=äé=ã~çé=äó áíë=ãéãäéêëk