2015 Supplement ANSI/ASHRAE/IES Addenda a, c, d, e, g, h, j, k, m, n, o, p, q, r, s, z, aa, ac, ad, ae, ag, ak, bm, and dx to ANSI/ASHRAE/IES Standard 90.1-2013 Energy Standard for Buildings Except Low-Rise Residential Buildings (I-P and SI) See Appendix A for approval dates. These addenda were approved by a Standing Standard Project Committee (SSPC) for which the Standards Committee has estab- lished a documented program for regular publication of addenda or revisions, including procedures for timely, documented, con- sensus 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 website (www.ashrae.org) or in paper form from the Senior Manager of Standards. The latest edition of an ASHRAE Standard may be purchased on the ASHRAE website (www.ashrae.org) or from ASHRAE Cus- tomer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail: [email protected]. Fax: 678-539-2129. Telephone: 404- 636-8400 (worldwide), or toll free 1-800-527-4723 (for orders in US and Canada). For reprint permission, go to www.ashrae.org/permissions. © 2015 ASHRAE ISSN 1041-2336 ASHRAE Standing Standard Project Committee 90.1 for Addenda ak and dx Cognizant TC: 7.6, Systems Energy Utilization SPLS Liaison: Mark P. Modera ASHRAE Staff Liaison: Steven C. Ferguson IESNA Liaison: Rita M. Harrold Stephen V. Skalko*, Chair Itzhak H. Maor* James Benney Drake H. Erbe*, Vice-Chair James P. McClendon* Randall Blanchette Michael D. Lane*, Vice-Chair Raymond F. McGowan* Kym Carey Susan I. Anderson* Michael W. Mehl* Ernest A. Conrad Peter A. Baselici* Harry P. Misuriello* Darryl DeAngeles Jeffrey G. Boldt* Frank T. Morrison* James Douglas Donald M. Brundage* Timothy M. Peglow* Mike Erbesfeld Ron Burton* Eric E. Richman* Ron Gorman Charles C. Cottrell* Steven Rosenstock* Brian D. Hahnlen Thomas Culp* Leonard C. Sciarra* David Handwork S. Craig Drumheller* Maria Spinu* David Herron Allan B. Fraser* Frank A. Stanonik* Scott Hintz Jason J. Glazer* Wayne Stoppelmoor* Bjorn Londo David Grassl* Christian R. Taber* Merle F. McBride Chad Groshart * Steven Taylor* Michael I. Rosenberg Pekka Hakkarainen* Michael Tillou* Robert Ross Susanna Hanson* Martha G. VanGeem* Martha (Marty) G. Salzberg Richard Heinisch* McHenry Wallace, Jr.* Terry Smith Ned B. Heminger* Richard D. Watson* Don Surrena John F. Hogan Jerry W. White, Jr.* William J. Talbert Jonathan Humble* Jeremy Williams* Michael Tillou Hyman M. Kaplan* Steven Winkel* Richard Lord* Karim Amrane * Denotes members of voting status when the document was approved for publication ASHRAE Standing Standard Project Committee 90.1 for Addenda a, c, d, g, h, and ac Cognizant TC: 7.6, Systems Energy Utilization SPLS Liaison: Mark P. Modera ASHRAE Staff Liaison: Steven C. Ferguson IESNA Liaison: Rita M. Harrold Drake Erbe,* Chair Itzhak H. Maor* Randall Blanchette Richard Lord*, Vice-Chair Ray McGowan* Kym Carey Michael D. Lane*, Vice-Chair Michael W. Mehl* Jay Crandall Peter A. Baselici* Frank T. Morrison* Darryl DeAngeles Jeffrey G. Boldt* Harry Misuriello* James Douglas Donald M. Brundage* Frank Myers* Brian D. Hahnlen Ernest Conrad* Timothy M. Peglow* David Handwork Charles C. Cottrell* Eric E. Richman* Scott Hintz Thomas Culp* Steven Rosenstock* Michael Ivanovich S. Craig Drumheller* Robert Ross* Hy Kaplan Allan B. Fraser* Leonard C. Sciarra* Merle F. McBride Jim Garrigus* Stephen Skalko* Ron Nickson Jason J. Glazer* Frank A. Stanonik* Michael I. Rosenberg David Grassl* Wayne Stoppelmoor* Ms Marty G. Salzberg Chad Groshart * Christian R. Taber* Kenneth Seibert Pekka Hakkarainen* William Talbert Don Surrena Susanna Hanson* Steven Taylor* William J. Talbert Richard Heinisch* McHenry Wallace, Jr.* Michael Tillou Ned B. Heminger* Jerry W. White, Jr.* Martha VanGeem David Herron* Jeremy Williams* Richard Watson John F. Hogan* James Benney Steven Winkel Jonathan Humble* Sean Bielman * Denotes members of voting status when the document was approved for publication ASHRAE Standing Standard Project Committee 90.1 for Addenda e, j, k, m, n, o, p, q, r, s, z, a, ad, ae, af, ag, bm Cognizant TC: Systems Energy Utilization SPLS Liaison: Mark Modera ASHRAE Staff Liaison: Steven C. Ferguson IES Liaison: Rita M. Harrold Drake Erbe,* Chair Timothy M. Peglow* Gary Ash Michael D. Lane,* Vice-Chair Eric E. Richman* Joseph Brooks Richard Lord*, Vice-Chair Robert Ross* Don Brundage Peter A. Baselici* Leonard C. Sciarra* Jay Crandall Jeffrey G. Boldt* Wayne Stoppelmoor* James Douglas Thomas Culp* Christian R. Taber* Antonio Giacobbe Jim Garrigus* William Talbert* Stan Harbuck Jason J. Glazer* Steven Taylor* Michael Ivanovich David Grassl* Martha VanGeem* Hy Kaplan Pekka Hakkarainen* McHenry Wallace, Jr.* Neil Leslie Susanna Hanson* Jerry W. White, Jr.* Merle F. McBride Richard Heinisch* Ernest Conrad* Benjamin Meyer Ned B. Heminger* Charles C. Cottrell* Ron Nickson Scott Hintz* S. Craig Drumheller* Mark Nowak John F. Hogan* Chad Groshart * Michael I. Rosenberg Jonathan Humble* Ray McGowan* Marty G. Salzberg Itzhak H. Maor* Harry Misuriello* Amy Schmidt Chris Mathis* Steven Rosenstock* Kelly Seeger Michael W. Mehl* Frank A. Stanonik* Don Surrena Frank T. Morrison* Jeremy Williams* Michael Tillou Frank Myers* Karim Amrane Richard Watson * Denotes members of voting status when the document was approved for publication ASHRAE STANDARDS COMMITTEE 2015–2016 Douglass T. Reindl, Chair Keith I. Emerson Heather L. Platt Rita M. Harrold, Vice-Chair Steven J. Emmerich David Robin Joseph R. Anderson Julie M. Ferguson Peter Simmonds James D. Aswegan Roger L. Hedrick Dennis A. Stanke Niels Bidstrup Srinivas Katipamula Wayne H. Stoppelmoor, Jr. Donald M. Brundage Rick A. Larson Jack H. Zarour John A. Clark Lawrence C. Markel Julia A. Keen, BOD ExO Waller S. Clements Arsen K. Melikov James K. Vallort, CO John F. Dunlap Mark P. Modera James W. Earley, Jr. Cyrus H. Nasseri Stephanie C. Reiniche, Senior Manager of Standards SPECIAL NOTE This American National Standard (ANS) is a national voluntary consensus Standard developed under the auspices of ASHRAE. Consensus is defined by the American National Standards Institute (ANSI), of which ASHRAE is a member and which has approved this Standard as an ANS, as “substantial agreement reached by directly and materially affected interest categories. This signifies the concurrence of more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that an effort be made toward their resolution.” Compliance with this Standard is voluntary until and unless a legal jurisdiction makes compliance mandatory through legislation. ASHRAE obtains consensus through participation of its national and international members, associated societies, and public review. ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. The Project Committee Chair and Vice-Chair must be members of ASHRAE; while other committee members may or may not be ASHRAE members, all must be technically qualified in the subject area of the Standard. Every effort is made to balance the concerned interests on all Project Committees. The Senior Manager of Standards of ASHRAE should be contacted for a. interpretation of the contents of this Standard, b. participation in the next review of the Standard, c. offering constructive criticism for improving the Standard, or d. permission to reprint portions of the Standard. DISCLAIMER ASHRAE uses its best efforts to promulgate Standards and Guidelines for the benefit of the public in light of available information and accepted industry practices. However, ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components, or systems tested, installed, or operated in accordance with ASHRAE’s Standards or Guidelines or that any tests conducted under its Standards or Guidelines will be nonhazardous or free from risk. ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDS ASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for rating purposes, by suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providing other information that may serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them, and conformance to them is completely voluntary. In referring to this Standard or Guideline and in marking of equipment and in advertising, no claim shall be made, either stated or implied, that the product has been approved by ASHRAE. CONTENTS ANSI/ASHRAE/IES 2015 Addenda Supplement to ANSI/ASHRAE/IES Standard 90.1-2013, Energy Standard for Buildings Except Low-Rise Residential Buildings SECTION PAGE Addenduma..............................................................................................................................................................2 Addendumc..............................................................................................................................................................3 Addendumd..............................................................................................................................................................4 Addendume..............................................................................................................................................................6 Addendumg..............................................................................................................................................................7 Addendumh..............................................................................................................................................................8 Addendumj...............................................................................................................................................................9 Addendumk............................................................................................................................................................10 Addendumm...........................................................................................................................................................11 Addendumn............................................................................................................................................................12 Addendumo............................................................................................................................................................17 Addendump............................................................................................................................................................18 Addendumq............................................................................................................................................................22 Addendumr............................................................................................................................................................23 Addendums............................................................................................................................................................24 Addendumz............................................................................................................................................................25 Addendumaa..........................................................................................................................................................26 Addendumac..........................................................................................................................................................27 Addendumad..........................................................................................................................................................32 Addendumae..........................................................................................................................................................33 Addendumag..........................................................................................................................................................34 Addendumak..........................................................................................................................................................35 Addendumbm.........................................................................................................................................................37 Addendumdx..........................................................................................................................................................73 InformativeAppendixA—2015AddendaSupplementtoANSI/ASHRAE/IESStandard90.1-2013.......................75 NOTE Approvedaddenda,errata,orinterpretationsforthisstandardcanbedownloadedfreeofchargefromtheASHRAE websiteatwww.ashrae.org/technology. ©2015ASHRAE 1791TullieCircleNE·Atlanta,GA30329·www.ashrae.org·Allrightsreserved. ASHRAEisaregisteredtrademarkoftheAmericanSocietyofHeating,RefrigeratingandAir-ConditioningEngineers,Inc. ANSIisaregisteredtrademarkoftheAmericanNationalStandardsInstitute. (This foreword is not part of this standard. It is merely TABLE3.2 HeatedSpaceCriteria(SIUnits) informativeanddoesnotcontainrequirementsnecessary ClimateZone HeatingOutput(W/m2) for conformance to the standard. It has not been pro- cessedaccordingtotheANSIrequirementsforastandard 1 >15 and may contain material that has not been subject to 2 >15 public review or a consensus process. Unresolved objec- tors on informative material are not offered the right to 3A,3B >27 appealatASHRAEorANSI.) 3C >21 FOREWORD 4A,4B >30 Addendumarevisesthedefinitionofconditionedspacein 4C >24 Section 3.2. The revised definition reflects the reduction in 5 >36 loadsduetogreaterenergyefficiencyinSection5. 6 >42 The revision to Section 5.1.2.1 makes the text consistent withthedefinitionsinSection3.2. 7 >48 Note: In this addendum, changes to the current standard 8 >57 are indicated in the text by underlining (for additions) and strikethrough (for deletions) unless the instructions specifi- c. indirectly conditioned space: an enclosed space callymentionsomeothermeansofindicatingthechanges. withinabuildingthatisnotaheatedspaceoracooled AddendumatoStandard90.1-2013 space,whichisheatedorcooledindirectlybybeing connectedtoadjacentspace(s)provided: RevisethedefinitionsinSection3.2asfollows;deleteTable 1. theproductoftheU-factor(s)andsurfacearea(s) 3.2andreplacewiththefollowing(I-PandSIunits). of the space adjacent to connected space(s) exceedsthecombinedsumoftheproductofthe space: an enclosed space within a building. The classifica- U-factor(s) and surface area(s) of the space tionsofspacesareasfollowsforthe purposeofdetermining adjoining the outdoors, unconditioned spaces, buildingenveloperequirements: and to or from semiheated spaces (e.g., corri- conditionedspace:acooledspace,heatedspace,orindi- dors)or rectlyconditionedspacedefinedasfollows: 2. thatairfromheatedorcooledspacesisintention- allytransferred(naturallyormechanically)into a. cooledspace:anenclosedspacewithinabuildingthat thespaceatarateexceeding3ach(e.g.,atria). iscooledbyacoolingsystemwhosesensibleoutput semiheated space: an enclosed space within a building capacityisgreaterthanorequaltoexceeds53.4Btu/ h·ft2(1510W/m2)offloorarea. thatisheatedbyaheatingsystemwhoseoutputcapacity is greater than or equal to 3.4 Btu/h·ft2 (10 W/m2) of b. heatedspace:anenclosedspacewithinabuildingthat floorareabutisnotaconditionedspace. isheatedbyaheatingsystemwhoseoutputcapacity unconditioned space: an enclosed space within a build- relativetothefloorareaisgreaterthanorequaltothe ingthatisnotaconditionedspaceorasemiheatedspace. criteriainTable3.2. Crawlspaces, attics, and parking garages with natural or mechanical ventilation are not considered enclosed TABLE3.2 HeatedSpaceCriteria(I-PUnits) spaces. ClimateZone HeatingOutput(Btu/h·ft2) ReviseSection5.1.2.1asfollows. 1 >5 5.1.2.1 Separate exterior building envelope requirements 2 >5 are specified for each of three categories of conditioned space: (a) nonresidential conditioned space, (b) residential 3A,3B >9 conditionedspace,and(c)semiheatedspace. 3C >7 4A,4B >10 4C >8 5 >12 6 >14 7 >16 8 >19 2 ANSI/ASHRAE/IESAddendumatoANSI/ASHRAE/IESStandard90.1-2013 (This foreword is not part of this standard. It is merely informativeanddoesnotcontainrequirementsnecessary for conformance to the standard. It has not been pro- cessedaccordingtotheANSIrequirementsforastandard and may contain material that has not been subject to public review or a consensus process. Unresolved objec- tors on informative material are not offered the right to appealatASHRAEorANSI.) FOREWORD Section 8.4.1 previously separated feeder conductors frombranchcircuitswhenlimitingvoltagedrop. Byspecify- ingthesamecombinedvoltagedropoverthecombinationof components,thisaddendumreducesfirstcostsincertainproj- ectswhileremainingneutralonenergycosts. 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 specifi- callymentionsomeothermeansofindicatingthechanges. AddendumctoStandard90.1-2013 Modifythestandardasfollows(I-PandSIunits). 8.4 MandatoryProvisions 8.4.1 VoltageDrop Exception: Feeder conductors and branch circuits that are dedicatedtoemergencyservices 8.4.1.1 Feeders. Feeder conductors shall be sized for a maximumvoltagedropof2%atdesignload. 8.4.1.2 BranchCircuits.Branchcircuitconductorsshall besizedforamaximumvoltagedropof3%atdesignload. 8.4.1 VoltageDrop.Theconductorsforfeedersandbranch circuits combined shall be sized for a maximum of 5% volt- agedroptotal. ANSI/ASHRAE/IESAddendumctoANSI/ASHRAE/IESStandard90.1-2013 3 (This foreword is not part of this standard. It is merely investigated, and it was found that the measure meets the informativeanddoesnotcontainrequirementsnecessary cost-effective criteria even with reduced savings accounting for conformance to the standard. It has not been pro- forthismeasure. cessedaccordingtotheANSIrequirementsforastandard Note: In this addendum, changes to the current standard and may contain material that has not been subject to are indicated in the text by underlining (for additions) and public review or a consensus process. Unresolved objec- strikethrough (for deletions) unless the instructions specifi- tors on informative material are not offered the right to callymentionsomeothermeansofindicatingthechanges. appealatASHRAEorANSI.) AddendumdtoStandard90.1-2013 FOREWORD ModifySection3.2asfollows(forbothI-PandSIunits). This addendum adds deeper thermostat setups and set- networked guest room control system: a control system, backs and ventilation control to unrented hotel guestrooms accessible from the hotel/motel front desk or other central andmoreclaritytotheexistinghotelguestroomrequirements. location,thatiscapableofidentifyingreservedroomsaccord- These deeper setups and setbacks will provide additional ingtoatimedschedule,andiscapableofcontrollingHVAC energysavingswithoutaffectingoccupantcomfort.Thetech- ineachhotel/motelguestroomseparately. nology exists from multiple manufacturers to allow for these reductionsinunrentedguestrooms.Forstand-alonecontrols, Modify Section 6.3.2 as follows, renumbering the existing roomsareconsideredunrentediftheyareunoccupiedforlon- itemskthroughraccordingly(forbothI-PandSIunits). ger than 16 hours. For systems connected to a networked k. Systems serving hotel/motel guest rooms shall comply guestroomcontrol,thecontrolcanbeconfiguredtoindicate withSection6.4.3.3.5. whether the room is scheduled to be occupied; thus setbacks and ventilation can be turned off earlier when the room is AddSection6.4.3.3.5asfollows(forbothI-PandSIunits). scheduled to be unoccupied, and the networked control can returnsetpointstotheirdefaultlevels60minutesinadvance 6.4.3.3.5 AutomaticControlofHVACinHotel/Motel ofscheduledcheck-in. GuestRooms.Inhotelsandmotelswithgreaterthan50guest rooms, automatic controls for the HVAC equipment serving This addendum also requires that ventilation air to the eachguestroomshallbeconfiguredaccordingtotherequire- room be shut off during unoccupied periods. The addendum mentsinthefollowingsubsection. includesanexceptionfora“purgecycle”thatwouldprovide ventilation air to the guest room one hour before scheduled 6.4.3.3.5.1 Guest Room HVAC Setpoint Control. check-intotheroomasindicatedbyanetworkedguestroom Within 30 minutes of all occupants leaving the guest room, controlorthroughatimedoutdoorairventilationpurgecycle HVACsetpointsshallbeautomaticallyraisedbyatleast4°F one hour per day. It is unclear if shutting off the ventilation (2°C) from the occupant setpoint in the cooling mode and airduringvacancycomplieswithASHRAEStandard62.1,as automatically lowered by at least 4°F (2°C) from the occu- the 62.1 requirements regarding ventilation of unoccupied pant setpoint in the heating mode. When the guest room is spacesarenotclear.Inaddition,aproposaltochangeStan- unrentedandunoccupied,HVACsetpointsshallbeautomati- dard 62.1 to allow ventilation to be shut off in response to cally reset to 80°F (27°C) orhigher in the cooling mode and sensed vacancy is being developed (in the form of ASHRAE to 60°F (16°C) or lower in the heating mode. Unrented and Standard 62.1 addendum p) that would clearly allow the unoccupied guest rooms shall be determined by either of the requirementscontainedinthisaddendum.However,thepurge following: cycle exception allowed by this addendum would allow for a. Theguestroomhasbeencontinuouslyunoccupiedforup enhancedindoorairqualitybeyondtherequirementsofStan- to16hours. dard62.1,whilestillcapturingthemajorityoftheenergysav- b. A networked guest room control system indicates the ings of the ventilation shut-off for the rest of the day. The guestroomisunrentedandtheguestroomisunoccupied controls would typically operate from an occupancy sensor, fornomorethan30minutes. sothatcleaningcrewsinunrentedroomswouldreceiveventi- Exceptions: lationnecessaryduringcleaning. An analysis of the small hotel prototypes results in sav- 1. Anetworkedguestroomcontrolsystemshallbe ings and paybacks that meet ASHRAE SSPC 90.1 scalar permitted to return the thermostat setpoints to thresholdsforcosteffectivenessforallclimatezonesforsys- their default occupied setpoints 60 minutes temswheretheventilationfanissimplyswitchedoff,suchas prior to the time the room is scheduled to be PTACs.Forcentralventilationandexhaustsystemstypically occupied. providedwithfancoil-units,thereissomeadditionalcostfor 2. Coolingforhumiditycontrolshallbepermitted ventilation and exhaust dampers and pressure regulation duringunoccupiedperiods. devices. Even with these added costs, the proposed measure 6.4.3.3.5.2 GuestRoomVentilationControl.Within meetstheSSPC90.1cost-effectivenesscriteria.Thesituation 30 minutes of all occupants leaving the guest room, ventila- where an energy recovery ventilation device is required was tionandexhaustfansshallautomaticallybeturnedofforiso- 4 ANSI/ASHRAE/IESAddendumdtoANSI/ASHRAE/IESStandard90.1-2013 lation devices serving each guest room shall automatically tion during unrented periods at the design ventila- shut offthe supplyof outdoorair tothe guestroom andshut tion rate for 60 minutes, or at a rate and duration offexhaustairfromtheguestroom. equivalenttooneairchange. Exceptions: Guest room ventilation systems shall be 6.4.3.3.5.3 AutomaticControl.Captivekeycardsys- permittedtohaveanautomaticdailypreoccupancy tems shall be permitted to be used to comply with Section purgecyclethatprovidesdailyoutdoorairventila- 6.4.3.3.5. ANSI/ASHRAE/IESAddendumdtoANSI/ASHRAE/IESStandard90.1-2013 5 (This foreword is not part of this standard. It is merely AddendumetoStandard90.1-2013 informativeanddoesnotcontainrequirementsnecessary for conformance to the standard. It has not been pro- Modifythestandardasfollows(IPandSIunits) cessedaccordingtotheANSIrequirementsforastandard and may contain material that has not been subject to 9.1.2 LightingAlterations.Forthealterationofanylight- public review or a consensus process. Unresolved objec- ing system in an interior space, that space shall comply with tors on informative material are not offered the right to the lighting power density (LPD) requirements of Section appealatASHRAEorANSI.) 9.5.1or9.6.1andthecontrolrequirementsofSections9.4.1.1 (a), (b), (c), (d), (g), (h), and (i), as applicable to that space. FOREWORD andtheautomaticshutoffrequirementsofSection9.4.1.1. Current requirements for existing building alterations For the alteration of any lighting system in an exterior don’t require compliance with most mandatory control building application, that lighting system shall comply with requirementsevenifitisamajoralteration(e.g.,guttingthe the lighting power density (LPD) requirements of Section 9 space or building). Major renovations of lighting should applicabletotheareailluminatedbythatlightingsystemand require the same compliance as new construction. Further- the applicable control requirements of Sections 9.4.21.7(a) more, Standard 90.1 lags behind the major codes in this and 9.4.1.47(b). Such alterations shall include all luminaires arena.Title242013requirescompliancewithallthecontrol that are added, replaced or removed. This requirement shall requirements (in most cases) when more than 10% of the also be met for alterations that involve only the replacement lightingischangedormorethan40luminairesaremodified- of lamps plus ballasts. Alterations do not include routine in-place.IECC2012requirescompliancewithallthecontrol maintenanceorrepairsituations. requirements when more than 50% of the lighting load is altered. Exception(s): This addendum relaxes the existing threshold somewhat 1. Alterationsthatinvolve20%orlessthan10%ofthe (20%insteadof10%)butcaptureshighenergyefficiencyby requiringmoreofthecontrolrequirements.Thecostoflight- connected lighting load in a space or area need not ing controls has decreased and can probably be expected to comply with these requirements, provided that such decreasefurther,sotheadditionoftheselightingcontrolsin alterationsdonotincreasetheinstalledLPD. analterationnolongerrepresentsalargebarrier 2. Lightingalterationsthatonlyinvolvereplacementof In this addendum, changes to the current standard are lampsplusballastsoronlyinvolveone-for-onelumi- indicatedinthetextbyunderlining(foradditions)andstrike- naire replacement need only comply with LPD through (for deletions) unless the instructions specifically requirementandSection9.4.1.1(h)or9.4.1.1(i). mentionsomeothermeansofindicatingthechanges. 3. Routinemaintenanceorrepairsituations. 6 ANSI/ASHRAE/IESAddendumetoANSI/ASHRAE/IESStandard90.1-2013