1 |EnergyEfficiencyandRenewableEnergyeere.energy.govTestProcedures:NoticeofProposedRulemakingforPackagedTerminalAirConditionersandPackagedTerminalHeatPumpsApril28,2014ApplianceStandardsDepartmentofEnergyBuildingTechnologiesProgramEERE‐2012‐BT‐TP‐0032PTAC‐2012TP0032@ee.doe.govwww. AJMadison.comwww.bryant.com2PublicMeetingSlidesTopics1Introduction2Regulatory History3Covered Products4Proposed Changes to Test Procedure5Closing Remarks3Welcome•Introductions(aroundtheroom)•RoleoftheFacilitator•GroundRules–Speakoneatatime.–Sayyournamefortherecord– therewillbeacompletetranscriptofthismeeting.–Beconcise– sharethe‘air‐time’.–Keepthefocushere– cellphonesonsilent;limitsidebarconversations.–Webinarparticipantsturnphoneonmute;“raiseyourhand”toberecognizedtospeak.•HousekeepingItems•AgendaReview•OpeningRemarks4Agenda•9:00– 9:15amWelcome,Introductions,OpeningStatements•9:15– 9:20amRegulatoryHistory•9:20– 9:30amCoveredProducts•9:30– 11:30amTestProcedureAmendments•11:30– 12:00amClosingRemarks5ListeningViatheWebcast•TheDepartmentisbroadcastingthismeetingliveovertheInternet.•DOEisprovidingthewebcasttoaccommodatestakeholdersthatareunabletoattendthepublicmeetinginperson.•Thewebbroadcastallowsstakeholderstolisteninandviewtheslides.•Allstakeholdersareencouragedtosubmitwrittencommentsafterthepublicmeeting.6PurposeofthePublicMeeting•PresenttheproceduralandanalyticalapproachestoevaluatechangestotheTestProcedureforPackagedTerminalAirConditionersandHeatPumps.•Invitecommentonthenoticeofproposedrulemaking(NOPR)document.•Discussnextstepsintherulemaking.•Inviteparticipantstoprovidesummarycommentsorstatementsandraiseadditionalissuesfordiscussion.7IssuesforDiscussionIssueboxnumberingcorrespondstothelistofissuespublishedattheendoftheNOPRdocument,availableat:http://www.regulations.gov/#!documentDetail;D=EERE‐2012‐BT‐TP‐0032‐0001ThedeadlineforsubmittingcommentsisMay27,2014.Issue Box: DOE welcomes comments, data, andinformation concerning its proposed test procedurefor packaged terminal air conditioners and heatpumps. Issues that correspond to those raised inDOE’s published material will be numbered inaccordance with that material. Whether invited by anissue box or not, comments are welcome on any partof DOE’s analysis.8OpeningRemarksMeetingparticipantsareinvitedtoprovideopeningremarksorstatementsatthistime.9PublicMeetingSlidesTopics1Introduction2Regulatory History3Covered Products4Proposed Changes to Test Procedure5Closing Remarks10RegulatoryHistory•Thistestprocedurerulemakingcoversthepackagedterminalairconditionersandheatpumpstestproceduresdiscussedin10CFR431.96.•OnDecember8,2006,DOEestablishedthetestprocedureinafinalrule(71FR71340).–ThisruleincorporatedANSI/AHRI310/380‐2004byreference.•OnMay16,2012,DOEestablishedafinalruleforcommercialheating,air‐conditioning,andwater‐heatingequipment(ASHRAEequipment)(77FR28928).–ThisruleincludedamendmentstothetestprocedureforPTACsandPTHPs.11CurrentRulemaking•OnFebruary22,2013,DOEpublishedanoticeofpublicmeetingandavailabilityofframeworkdocumentforarulemakingtoconsideramendingenergyconservationsstandardsrulemakingforPTACsandPTHPs.(78FR12252)•ThecurrenttestprocedurereferencesAHRIStandard310/380‐2004byreference,whichreferencesASHRAEStandard16‐1999,ASHRAEStandard58‐1986,andASHRAEStandard37‐1988.•Intheframeworkdocument,DOEsoughtcommentsonissuespertainingtotestingofPTACsandPTHPs,including:–Equipmentbreak‐in–Wallsleevesealing–Pre‐fillingthecondensatepan–Barometricpressurecorrection–DifferencesinASHRAEStandard16andASHRAEStandard3712ASRACWorkingGroup•OnFebruary26,2013,theApplianceStandardsandRulemakingFederalAdvisoryCommittee(ASRAC)formedaworkinggrouptoengageinanegotiatedrulemakingtoamendcommercialHVACcertificationrequirements.•ThegrouprecommendedanumberoftestprocedureamendmentsforPTACsandPTHPs,includingproposalsfor:–Astandardizedwallsleeveduringtesting–Astandardizedfilterduringtesting–Astandardizedgrillduringtesting•DOEproposedthesetestprocedureamendmentswithoutmodificationintoday’srulemaking.13PublicMeetingSlidesTopics1Introduction2Regulatory History3Covered Products4Proposed Changes to Test Procedure5Closing Remarks14CoveredProducts•EPCAdefinespackagedterminalairconditionersandpackagedterminalheatpumpsasthefollowing:Theterm"packagedterminalairconditioner"meansawallsleeveandaseparateun‐encasedcombinationofheatingandcoolingassembliesspecifiedbythebuilderandintendedformountingthroughthewall.Itincludesaprimesourceofrefrigeration,separableoutdoorlouvers,forcedventilation,andheatingavailabilitybybuilder'schoiceofhotwater,steam,orelectricity.Theterm"packagedterminalheatpump"meansapackagedterminalairconditionerthatutilizesreversecyclerefrigerationasitsprimeheatsourceandshouldhavesupplementaryheatsourceavailabletobuilderswiththechoiceofhotwater,steam,orelectricresistantheat15PublicMeetingSlidesTopics1Introduction2Regulatory History3Covered Products4Proposed Changes to Test Procedure5Closing Remarks16CurrentTestProcedure•ThecurrentDOETestProcedurein10CFR431.96referencesAHRI310/380‐2004,butomitsSection5.6.•AHRI310/380‐2004referencestwopotentialmethodsoftestforstandardcoolingratings:–ANSI/ASHRAE16or–ANSI/ASHRAE37,exceptnosecondarycapacitycheckshallbeusedandnoductshallbeattachedtothecondenser•AHRI310/380referencesthefollowingforthestandardheatingratings:–ANSI/ASHRAE58forunitswithreverse‐cyclecapabilities17ProposedChanges•DOE’sproposedchangestothetestprocedureinclude:•DOEalsoconsideredbutdidnotproposechangesforthebarometricpressurecorrectioninASHRAEstandard16andpart‐loadefficiencymetrics.# ProposedChange1 Explicitlyallowingforabreak‐inperiod(upto20hours)2 Requiringsealingofgapsbetweenwallsleevesandthetestfacilitywall3 Explicitlyallowingforpre‐fillingofthecondensatedrainpanwithwater4 Requiring ASHRAE16onlyasthemethodformeasuringcoolingcapacity5 Requiringtestingusinga14‐inchdeepwallsleeve6 Requiring testingusingthemosttypicalfilteroptionshippedwithaunit18Break‐InDuration•DOEaskedforcommentontheappropriatetimerequiredforbreak‐inandwhetheritneededtobeconductedinsidethetestchamber,intheframeworkdocumentpublishedonFebruary22,2013.77FR12252•Break‐in,alsocalledrun‐in,referstotheoperationofequipmentpriortotestingtocausepreliminarycompressorwear,whichmayimprovemeasuredperformance.DOEunderstandsthatmanylabscommonlyincorporateabreak‐inperiodbeforethestartofefficiencytestsforairconditioningequipment.•DOE'sMay16,2012finalruleforSmall,Large,andVeryLargeCommercialPackageAirConditionersandHeatPumps(ASHRAEequipment),77FR28928,28991,addedaspecificationinthetestprocedurethatallowsanoptionalbreak‐inperiodofupto20hoursformanytypesofcommercialairconditioningandheatingequipment(butnotPTACsorPTHPs).19Break‐inDurationProposal•DOEisproposingallowingPTACandPTHPtestingtouseanoptionalbreak‐inperiodofupto20hours,consistentwiththetestprocedureforothercommercialair‐conditioningequipment.•DOEisalsoproposingtorequiremanufacturerstoreportthedurationofthebreak‐inperiodincertificationreports.Issue 1: DOE seeks comment on its proposal to add an optional break-inperiod to the test procedure (up to 20 hours) for PTACs and PTHPs, andwhether the duration of the proposedbreak-in period is appropriate. Ifcommenters support longer break-in times, DOE also requests datashowing that break-in periods longer than 20 hours make a significantimpact on efficiency measurements for this equipment type.20WallSleeveSealing•PTACsandPTHPsaretestedinafacilitywithtworoomsseparatedbyadividingwallwithanopening.Thetestsampleisplacedintheopeningandanyremaininggapsbetweenthedividingwallandthewallsleevearoundtheunitarefilledwithinsulatingmaterial.•Airleakagebetweentheoutdoorandindoorroomsthroughgapsbetweenthewallsleeveandthedividingwallcanreducethemeasuredcapacityandefficiency,whichwouldcontributetotestresultsunrepresentativeoffieldoperation.•Thecurrenttestproceduredoesnotexplicitlyallowforthegapbetweenthetestsampleandtheinsulatingmaterialtobesealedtopreventthisairleakage.21WallSleeveSealingProposal•ToimprovetherepeatabilityofPTACandPTHPtesting,DOEproposestorequirethattestfacilities,wheninstallingPTACsandPTHPsinthetestchamber,sealallpotentialleakagegapsbetweenthewallsleeveandthedividingwall.Issue 2: DOE seeks comments on the sealing of PTAC and PTHP wallsleeves to the test facility dividing wall, including whether the type ormethod of sealing should be specified inthe test procedure, and whethera test has been developed that could beperformed to verify that adequateelimination of air leakage has been achieved.22Pre‐FillingCondensateDrainPan•Duringoperation,mostPTACsandPTHPstransfercondensatethatcondensesontheindoorsidetotheunit’soutdoorside,anddistributethewaterovertheair‐inletsideofthecondenser.Thisenhancestheoperationoftheoutdoorcoilinair‐conditioningmode.•Atthestartofatest,PTACsandPTHPsmaystartwithnowaterinthecondensatepan,andasthetestprogresses,theunitapproachesanequilibriumstateofoperationinwhichthecondensatelevelinthedrippanstabilizesataconstantlevel.Itcantakeseveralhourstoreachthissteadystate.•Toacceleratethetestingprocess,testfacilitiestypicallyaddwatertothecondensatepanatthebeginningofthetestratherthanwaitingfortheunittogeneratesufficientcondensatetostabilize.23Pre‐FillingCondensateDrainPanProposal•DOEproposestoaddaprovisioninitstestproceduresat10CFR431.96toallowmanufacturerstheoptionofpre‐fillingthecondensatedrainpanbeforestartingtheefficiencytest.•Theprovisionwouldnotsetrequirementsregardingthewaterpurityorthewatertemperaturethatistobeused,asDOEhasnoinformationindicatingthatthiswouldimpactthetestresults.Issue 3: DOE seeks comments on its proposal to permit the pre-filling ofthe condensate drain pan, including whether the mineral content of thewater or temperature of the water used would affect the measurementand/or whether these data should be recorded and documented as part ofthe test records underlying certification.24ASHRAEStandard16vsASHRAEStandard37•ANSI/AHRIStandard310/380‐2004indicatesthateitherASHRAEStandard16‐1999(acalorimeter‐basedmethod)orASHRAEStandard37‐1988(apsychrometric‐basedmethod)maybeusedtodeterminecoolingefficiency.Thetwotestmethodshavesignificantdifferencesthatmayinfluencetestresults,includingwhetheroutgoingevaporatorairisallowedtorecirculatebackintotheevaporator.•DOEinvestigatedpotentialdifferencesinresultsbetweenthetwostandardsbyconductingexperimentaltesting,andcomparedtheenergyefficiencyratio(EER)results,whichshowedawiderangeofdifferences(from0.4to1.0Btu/h‐W)inresults.25ASHRAEStandard16vsASHRAEStandard37Proposals•TostandardizethetestingofPTACsandPTHPs,DOEisproposingtorequirethatonlyASHRAEStandard16beusedwhenconductingacoolingmodetestforPTACsandPTHPs.•DOEunderstandsthatthereisanongoingprocesstoreviseASHRAEStandard16toincorporatepsychrometric testingsimilartoASHRAEStandard37.Uponreleaseoftheupdatedstandard,DOEmayconsiderupdatestotheDOEtestproceduretoreferencethenewstandardinafuturerulemakingprocess.Issue 3: DOE seeks comments on its proposal to designate ASHRAEStandard 16 as the sole test method for measuring cooling efficiency forPTACs and PTHPs. Specifically, DOE is interested in the test burden onmanufacturers resulting from this proposed requirement, and whetherthere are PTAC or PTHP manufacturers that currently conduct asignificant number of tests using ASHRAE Standard 37.26WallSleeveSize•TheDOEtestprocedureprovideslimitedguidanceonthetypeofwallsleevethatshouldbeusedduringtesting.•ForstandardsizePTACsandPTHPs,thewallsleevemeasures42incheswideand16incheshigh;however,thereisnostandardizeddepth.Somemanufacturersofferextendedwallsleevesinavarietyofdepths(upto31inches)thatcanbeusedwithanyoftheirstandardsizePTACsorPTHPs.DOEbelievesthattheuseofvaryingtestsleevedepthsmayaffectmeasuredtestresults,duetothesleeve’spotentialtoaffectairflowandfanperformance.DOE'ssurveyofwallsleevesizesonthemarketshowedthatthemostcommonwallsleevedepthis14inches.•TheASRACWorkingGroupdiscussedtheissueofvaryingwallsleevesizesandvotedtoadoptthepositionthatunitsshouldbetestedusingastandard14inchsleeve(DocketNo.EERE‐2013‐BT‐NOC‐0023,No.53,pg.17).27WallSleeveSizeProposal•DOEproposestoaddaprovisionto10CFR431.96torequiretestingusingawallsleevewithadepthof14inches(orthewallsleeveoptionthatisclosestto14inchesindepththatisavailableforthebasicmodelbeingtested).•ThisisconsistentwiththeWorkingGroup’srecommendation.Issue 4: DOE seeks comments on its proposal to require testingusing 14-inch deep wall sleeves. DOE is also interested in whetherthere are any PTACs or PTHPs that cannot be tested with a 14-inchdeep wall sleeve.28FilterRequirement•PTACsorPTHPsgenerallyshipwithafiltertoremoveparticulatesfromtheindoorairstream.ThereiscurrentlynodescriptionintheDOEtestprocedureofthetypeoffiltertobeusedduringtesting.WhilesomePTACsandPTHPsonlyhaveonefilteroption,somePTACsandPTHPsareshippedwitheitherastandardfilterorahighefficiencyfilter.Ahighefficiencyfilterwillimposemoreairflowrestriction,whichcanincrementallydecreaseairflowandthecapacityorefficiencyoftheunit.•TheWorkingGroupdiscussedtheissueofvaryingairfilterefficiency.TheWorkingGroupvotedtoadoptthepositionthatunitsshouldbetested“asshipped”withrespecttoselectingafilteroption(DocketNo.EERE‐2013‐BT‐NOC‐0023,No.53,pg.16).29FilterRequirementProposal•DOEproposestoaddaprovisionto10CFR431.96torequiretestingusingawallsleevewithadepthof14inches(ortheavailablewallsleeveoptionthatisclosestto14inchesindepth).•ThisisconsistentwiththeWorkingGroup’srecommendation.Issue 4: DOE seeks comments on its proposal to require testingusing standard filters.Issue 5: DOE also seeks comment on its proposal to require theuse of MERV-3 filter for testing PTACs and PTHPs that do not shipwith filters.30BarometricPressureCorrection•DOErequesteddetailedtestdatashowingtherelationshipofcapacitytobarometricpressureintheframeworkdocument.78FR12252(Feb.22,2013).•TheDOEtestprocedure,inSection6.1.3ofreferencedASHRAEStandard16,allowsforadjustmentofthecapacitymeasurementbasedonthetestedbarometricpressure.–ASHRAE16:“Thecapacitymaybeincreased0.8%foreachin.Hgbelow29.92in.Hg.”•DOEnotedthattherearesomeeffectsathigheraltitudesthatmayincreasecapacity,butthereareothercompetingeffectsthatmaynegatethisdecrease.31BarometricPressureCorrectionProposal•BecauseDOEhasnotreceivedanydatatosupporttheremovalofthebarometricpressurecorrectionfromtheDOEtestprocedure,DOEisnotproposingtoamendorremovethisprovision.Issue 6: DOE seeks comments or data on the need for abarometric pressure correction for PTACs and PTHPs.32PartLoadMetricandVaryingAmbientConditions•DOEreceivedinputfromstakeholdersduringtheframeworkmeetingontheissueofafull‐loadmetricversusapart‐loadmetric,andonconsideringdefrostmodeoperationat17°F.•ThecurrentDOEtestprocedureforPTACsandPTHPsmeasurescoolingandheatingefficiencyintermsofEERandcoefficientofperformance(COP),respectively.Bothofthesemetricsmeasuretheefficiencyoftheunitrunningsteadilyatthemaximumcoolingorheatingoutputsettings.•DOEisunawareofanydatashowingthetimePTACsandPTHPsspendoperatinginpart‐loadconditionsversusfull‐loadconditions.•Likewise,DOEisnotawareofanydatashowingtheamountoftimethatPTHPswithdefrostcapabilitiesspendatdifferentoutdoortemperatures,specificallyat17°Fcomparedwiththatat47°F.33PartLoadMetricProposal•DOEisnotproposingtoadopteitherapart‐loadorseasonalefficiencymetricforthecoolingmodethatconsiderspart‐loadperformance,oraseasonalefficiencymetricfortheheatingmodethatconsiderselectricresistanceheatingforPTACsorPTHPs.Issue 6: DOE seeks comments on its proposal not to developseasonal efficiency metrics that would evaluate part-loadoperation of PTACs and PTHPs or the impact of electric resistanceheating in low ambient temperatures for PTHPs. DOE also seeksany information regarding seasonal load patterns for PTACs andPTHPs in both cooling and heating modes.34ComplianceDateProposal•TheproposedtestprocedureamendmentsforPTACsandPTHPSdonotcontainchangesthatwouldmateriallyalterthemeasuredenergyefficiencyofequipment.Rather,mostoftheproposedchangesrepresentclarificationsthatwouldimprovetheuniformapplicationofthetestproceduresforthisequipment.•DOE'stestprocedureproposalsbeingconsideredinthisnoticewouldbeeffective30daysafterpublicationofthefinalruleintheFederalRegister.•Consistentwith42U.S.C.6314(d),anyrepresentationsofenergyconsumptionofPTACsandPTHPsmustbebasedonanyfinalamendedtestprocedures360daysafterthepublicationofthetestprocedurefinalrule.35CertificationandEnforcementProvisions•DOEhasalsoproposedaddingproduct‐specificenforcementprovisionsfortheverificationofcoolingcapacity.–ThestandardequationsforEERandCOPin10CFR431.97arebasedonthecoolingcapacityoftheunit.Proposed10CFR429.134(e):“Thetotalcoolingcapacityofthebasicmodelwillbemeasuredpursuanttothetestrequirementsofpart431foreachunittested.Theresultsofthemeasurement(s)willbeaveragedandcomparedtothevalueofcoolingcapacitycertifiedbythemanufacturer.Thecertifiedcoolingcapacitywillbeconsideredvalidonlyifthemeasurementiswithinfivepercentofthecertifiedcoolingcapacity.(i) Ifthecertifiedcoolingcapacityisfoundtobevalid,thatcoolingcapacitywillbeusedasthebasisforcalculationoftheEERand,ifapplicable,theCOPenergyconservationstandardthatappliestothegivenbasicmodel.(ii) Ifthecertifiedcoolingcapacityisfoundtobeinvalid,theaveragemeasuredcoolingcapacitywillserveasthebasisforcalculationoftheEERand,ifapplicable,COPenergyconservationstandardthatappliestothegivenbasicmodel.”36PublicMeetingSlidesTopics1Introduction2Regulatory History3Covered Products4Proposed Changes to Test Procedure5Closing Remarks37HowtoSubmitWrittenCommentsInallcorrespondence,pleaserefertothePTACTPrulemakingby:– NOPRforTestProceduresforPackagedTerminalAirConditionersandPackagedTerminalHeatPumps– DocketNumberEERE‐2012‐BT‐TP‐0032– RegulationIdentificationNumber(RIN)1904‐AD19Email:PTAC‐2012TP0032@ee.doe.govPostal:CourierMs.BrendaEdwardsMs.BrendaEdwardsU.S.DepartmentofEnergyU.S.DepartmentofEnergyBuildingTechnologiesProgram,BuildingTechnologiesProgramMailstopEE‐5B950L’EnfantPlazaSW,Suite6001000IndependenceAvenue,SWWashington,DC20024Washington,DC20585‐0121Tel:202586‐2945CommentperiodclosesMay27,2014,11:59PMET