Weatherexpert Ultrahigh-Efficiencycoolingonly/Electricheatpackagedrooftop

Noteaboutthisspecification:

GUIDESPECIFICATIONS–50LC**14-26

Thesespecifications arewrittenin“Masterformat”aspublishedbytheConstructionSpecificationInstitute.Pleasefeelfree tocopythisspecificationdirectlyintoyourbuildingspec.

WeatherExpert®UltraHigh-EfficiencyCoolingOnly/ElectricHeatPackagedRooftop

HVACGuideSpecifications:

SizeRange:12.5to23NominalTons SectionDescription

230680SchedulesforDecentralized HVACEquipment

230680.13DecentralizedUnitaryHVACEquipmentSchedule

230680.13.A.Rooftopunitschedule

1.Scheduleispertheprojectspecificationrequirements.

230716HVACEquipmentInsulation

230716.13Decentralized,RooftopUnits:

230716.13.A.Evaporatorfancompartment:

1.Interiorcabinetsurfacesshallbeinsulatedwithaminimum1/2-in.thick,minimum11/2lbdensityaluminum foil-facedinsulationontheairside.

2.InsulationandadhesiveshallmeetNFPA90Arequirementsforflamespreadandsmokegeneration.

3.Unitinternalinsulationliningsshallberesistanttomoldgrowthinaccordancewith“moldgrowthandhumidity” testinASTMC1338,G21,andUL181orcomparabletestmethod.Airstreamsurfacesshallbeevaluatedin accordancewiththe“ErosionTest”inUL181,aspartofASTMC1071.

230716.13.B.Electricheatcompartment:

1.Aluminumfoil-facedfiberglassinsulationshallbeused.

2.InsulationandadhesiveshallmeetNFPA90Arequirementsforflamespreadandsmokegeneration.

230913InstrumentationandControlDevicesforHVAC

230913.23SensorsandTransmitters

230913.23.A.Thermostats

1.Thermostatmust

a.energizeboth“W”and“G”whencallingforheat.

b.havecapabilitytoenergize3differentstagesofcooling,and2differentstagesofheating.

c.includecapabilityforoccupancyscheduling.

230923DirectDigitalControl(DDC)SystemforHVAC

230923.13Decentralized,RooftopUnits:

230923.13.A.SystemVu™ intelligentintegratedDirectDigitalControl(DDC)shallprovide:

1.Integratedunitoperation for comfortcooling,heating ventilation aswellasallmonitoring,recordingand reportingcapabilities.Controllershallalsoprovidediagnosticsandalarmsofabnormalunitoperationthrough thecontroller.Controllershallhaveanintuitiveuserdisplayandbeabletobeusedinastandaloneoperationor viabuildingautomationsystem(BAS).

2.QuickUnitStatusLED’sof:Run–meaningallsystemsarego,ALERT–thatindicatesthereiscurrentlya non-criticalissuewiththeunit,likefiltersneedtobereplacedandFAULT–thatindicatestheunithasacritical issueandwillpossiblyshutdown.

3.Sixlargenavigationkeysforeasyaccess.Navigationkeysshallconsistof:TEST,BACK,ENTER,andMENU alongwithUPandDOWNarrows.

4.Fullbacklituserdisplaywith4lineby30charactertextcapabilities.Displaymenushallbedesignedtoprovide guidedmajormenusandsubmenusmainmenusprovidedbelow:

—ShutdownUnit

—RunStatus

—Settings

—Alerts/Faults

—Service

—Inputs

—Outputs

—USB

5.Thecapabilityforstandaloneoperationwithconventionalthermostat/sensororusewithbuildingautomation systems(BAS)ofCarrieri-Vu®,BACnet*andCarrierComfortNetwork®(CCN)systems.Nospecialmodules orboardsarerequiredforthesecapabilities.

6.TheabilitytoreadrefrigerantpressuresatdisplayorviaBASnetworkof;DischargePressure,SuctionPressure andLiquidLinePressure.Theneedfortraditionalrefrigerantgaugesisnotrequired.

7.USBDataPortforflashdriveexchange.Thiswillallowthetransferofdataforuploads,downloads,performsoftware upgrades,back-upandrestoredataandfiletransferdatasuchascomponentnumberofstartsandrunhours.

8.ReverseRotationProtectionofcompressorsiffieldthreephasewiringismisapplied.

9.ProvideServiceCapabilitiesof:

—Autoruntest

—Manualruntest

—Componentrunhoursandstarts

—Commissioningreports

—Datalogging

—Alarmhistory

10.Economizercontrolanddiagnostics.Setupeconomizeroperation,receivefeedbackfromactuator.Alsomeets themostrecentCaliforniaTitle24FaultDetectionandDiagnostic(FDD)requirements.

11.Unitcoolingoperationdownto0°F(-18°C)

12.ControllershallhaveeasyaccessconnectionsaroundthecontrollerperimeterareaandconsistofMate-N-Lok, terminalblockandRJstylemodularjackconnections.

13.365dayrealtimeclock,20holidayschedulesalongwithoccupiedandunoccupiedscheduling.

14.Auto-Recognitionforeasyinstallationandcommissioningofdeviceslikeeconomizers,spacesensorsetc.

15.A5°FtemperaturedifferencebetweencoolingandheatingsetpointstomeetthelatestASHRAE90.1-2013 EnergyStandard.

16.Containreturnairsensor,supplyairsensorandoutdoorairsensortohelpmonitorandprovidedatafortheunit comfortoperation,diagnosticandalarms.

17.UseofCarrier’sfieldaccessoryhand-heldNavigator™ display.

18.ControloftheoperationofunitVFD(VariableFrequencyDrive)toworkinconjunctionwiththecooling,heatingand ventilationmodes.

19.3-yearlimitedpartwarranty

230923.13.B.RTUOpen-multi-protocol,directdigitalcontroller:

1.ShallbeASHRAE62compliant.

2.Shallaccept18-30VAC,50-60Hz,andconsume15VAorlesspower.

3.Shallhaveanoperatingtemperaturerangefrom-40°F(-40°C)to130°F(54°C),10%-90%RH(non-condensing).

4.Shallincludebuilt-inprotocolforBACnet(MS/TPandPTPmodes),Modbus†(RTUandASCII),JohnsonN2 andLonWorks**.LonWorksEchelonprocessorrequiredforallLonapplicationsshallbecontainedinseparate communicationboard.

5.Shallallowaccessofupto62networkvariables(SNVT).Shallbecompatiblewithallopencontrollers

6.BaudrateControllershallbeselectableusingadipswitch.

7.ShallhaveanLEDdisplayindependentlyshowingthestatusofserialcommunication,running,errors,power,all digitaloutputs,andallanaloginputs.

8.Shallacceptthefollowinginputs:spacetemperature,setpointadjustment,outdoorairtemperature,indoorair quality,outdoorairquality,compressorlock-out,fireshutdown,enthalpyswitch,andfanstatus/filterstatus/ humidity/remoteoccupancy.

9.Shallprovidethefollowingoutputs:economizer,fan,coolingstage1,coolingstage2,heatstage1,heatstage2, heatstage3/exhaust/reversingvalve.

* BACnet is a registered trademark of ASHRAE (American Society ofHeating, Refrigerating and Air- Conditioning Engineers).

†Modbus is a registered trademark of Schneider Electric.

** LonWorks is a registered trademark of Echelon Corporation.

10.Shallhavebuilt-insurgeprotectioncircuitrythroughsolidstatepolyswitches.Polyswitchesshallbeusedon incomingpowerandnetworkconnections.Polyswitcheswillreturntonormalwhenthe“trip”conditionclears.

11.Shallhaveabatteryback-upcapableofaminimumof10,000hoursofdataandtimeclockretentionduring poweroutages.

12.Shallhavebuilt-insupportforCarriertechniciantool.

13.ShallincludeanRS-485protocolcommunicationport,anaccessportforconnectionofeitheracomputerora Carriertechniciantool,anEIA-485portfornetworkcommunicationtointelligentspacesensorsanddisplays, andaporttoconnectanoptionalLonWorkscommunicationscard.

14.Softwareupgradeswillbeaccomplishedbyeitherlocalorremotedownload.Nosoftwareupgradesthroughchip replacementsareallowed.

230933IntegratedStagingControl(ISC)SystemforHVAC(Electro-Mechanicalunits)

230933.13Decentralized,RooftopUnits:

230933.13.A.General:

1.Shallbecompletewithself-containedlow-voltagecontrolcircuitprotectedbyaresettablecircuitbreakeronthe 24-vtransformerside.Transformershallhave75VAcapability.

2.Shallutilizecolor-codedwiring.

3.ShallincludeanISCelectro-mechanicalcontrolboard,toconvenientlyandsafelyprovideconnectionpointsforvital controlfunctionssuchas:smokedetectors,phasemonitor,gascontroller,economizer,thermostat,andsafetyswitches. Shallcontrolallthreestagesofcompressorlogic,twoorthreestagesoftheindoorfanmotorlogicaswellasstaging oftheoutdoorfanmotor.ShallalsohaveagreenLEDindicatortoindicateGOoperationaswellasafaultLED indicatorforthermostatmis-wiring,nofanoperationandsafetyswitches.

NOTE:DoesnotapplytounitsequippedwithSystemVu™ controls.

4.Unitshallincludeaminimumofone8-pinscrewterminalconnectionboardforconnectionofcontrolwiring. 230933.13.B. Safeties:

1.Compressorover-temperature,overcurrent.

2.Low-pressureswitch.

a.Low-pressureswitchshallusedifferentcolorwirethanthehigh-pressureswitch.Thepurposeistoassist theinstallerandservicetechniciantocorrectlywireandortroubleshoottherooftopunit.

NOTE:DoesnotapplytounitsequippedwithSystemVucontrols.

3.High-pressureswitch.

a.High-pressureswitchshallusedifferentcolorwirethanthelowpressureswitch.Thepurposeistoassistthe installerandservicetechniciantocorrectlywireandortroubleshoottherooftopunit.

4.Automaticreset,motorthermaloverloadprotector.

230993SequenceofOperationsforHVACControls

230993.13Decentralized,RooftopUnits:

230993.13.A.INSERTSEQUENCEOFOPERATION

234013PanelAirFilters

234013.13Decentralized,RooftopUnits:

234013.13.A.Standardfiltersection

1.Shallconsistoffactory-installed,lowvelocity,throwaway2-in.thickfiberglassfiltersofcommerciallyavailable sizes.

2.Unitshalluseonlyonefiltersize.Multiplesizesarenotacceptable.

3.Filtersshallbeaccessiblethroughadedicated,weathertightpanel.

4.4-infiltercapabilitiesshallbecapablewithpre-engineeredandapprovedCarrierfiltertrackfield-installedaccessory.

Thiskitrequiresfieldfurnishedfilters.

238119Self-ContainedAirConditioners

238119.13Medium-CapacitySelf-ContainedAirConditioners(50LC**14-26)

238119.13.A.General

1.Outdoor,rooftopmounted,ISCelectricallycontrolled,heatingandcoolingunitutilizinghermeticscroll compressorsforcoolingdutyandoptionalelectricheatforheatingduty.

2.Factoryassembled,single-pieceheatingandcoolingrooftopunit.Containedwithintheunitenclosureshallbe allfactorywiring,piping,controls,andspecialfeaturesrequiredpriortofieldstart-up.

3.UnitshallusePuron® (R-410A)refrigerant.

4.Unitshallbeinstalledinaccordancewiththemanufacturer’sinstructions.

5.Unitmustbeselectedandinstalledincompliancewithlocal,state,andfederalcodes. 238119.13.B.QualityAssurance

1.UnitmeetsandexceedsASHRAE90.1-2013minimumefficiencyrequirements.

2.UnitshallberatedinaccordancewithAHRIStandard340/360.

3.UnitshallbedesignedtoconformtoASHRAE15.

4.UnitshallbeETL-testedandcertifiedinaccordancewithANSIZ21.47StandardsandETL-listedandcertified underCanadianstandardsasatotalpackageforsafetyrequirements.

5.InsulationandadhesiveshallmeetNFPA90Arequirementsforflamespreadandsmokegeneration.

6.Unitinternalinsulationliningsshallberesistanttomoldgrowthinaccordancewith“moldgrowthandhumidity” testinASTMC1338,G21,andUL181orcomparabletestmethod.Airstreamsurfacesshallbeevaluatedin accordancewiththe“ErosionTest”inUL181,aspartofASTMC1071.

7.Unitcasingshallbecapableofwithstanding500-hoursaltsprayexposureperASTMB117(scribedspecimen).

8.RoofcurbshallbedesignedtoconformtoNRCAStandards.

9.Unit shall be subjected to a completely automated run test on the assembly line. The data for each unit will be stored at the factory, and must be available upon request.

10.UnitshallbedesignedinaccordancewithULStandard1995,includingtestedtowithstandrain.

11.Unitshallbeconstructedtopreventintrusionofsnowandtestedtopreventsnowintrusionintothecontrolbox upto40mph.

12.Unitshaketestedtoassurancelevel1,ASTMD4169toensureshippingreliability.

13.High-EfficiencyMotorslistedshallmeetsection313oftheEnergyIndependenceandSecurityActof2007 (EISA2007)

238119.13.C.Delivery,Storage,andHandling

1.Unitshallbestoredandhandledpermanufacturer’srecommendations.

2.Liftedbycranerequireseithershippingtoppanelorspreaderbars.

3.Unitshallonlybestoredorpositionedintheuprightposition. 238119.13.D.ProjectConditions

1. Asspecifiedinthecontract.

238119.13.E.OperatingCharacteristics

1.Unitshallbecapableofstarting andrunningat125°F(52°C)ambientoutdoortemperature,meetingmaximum

loadcriteriaofAHRIStandard340/360at±10%voltage.

2.Compressorwithstandardcontrolsshallbecapableofoperationfrom40°F(4°C),ambientoutdoortemperatures.For

loweroperationanintegratedeconomizershallbeutilizedtoallowlowertemperaturesandaccommodateindoorair

qualityinitiatives

3.Unitshalldischargesupplyairverticallyorhorizontallyasshownoncontractdrawings.

4.Unitshallbefactoryconfiguredandorderedforverticalsupplyreturnconfigurations.

5.Unit shall be factory furnished for either vertical or horizontal configuration without the use of special conversionkits.Nofieldkitsconversionispossible.

6.Unitshallbecapableofmixedoperation:verticalsupplywithhorizontalreturnorhorizontalsupplywithvertical return.

238119.13.F.ElectricalRequirements

1.Mainpowersupplyvoltage,phase,andfrequencymustmatchthoserequiredbythemanufacturer. 238119.13.G.UnitCabinet

1.Unitcabinetshallbeconstructedofgalvanizedsteel,andshallbebonderizedandcoatedwithapre-painted

bakedenamelfinishonallexternallyexposedsurfaces.

2.Unitcabinet exteriorpaintshallbe:filmthickness,(dry)0.003 inchesminimum,gloss(per ASTMD523,60°F):

60,Hardness:H-2HPencilhardness.

3.EvaporatorfancompartmentinteriorcabinetinsulationshallconformtoAHRIStandards340/360minimumexterior sweatcriteria.Interiorsurfacesshallbeinsulatedwithaminimum1/2-in.thick,1lbdensityaluminumfoil-faced fiberglassinsulation.Aluminumfoil-facedfiberglassinsulationshallalsobeusedintheheatcompartment.

4.Unitinternalinsulationliningsshallberesistanttomoldgrowthinaccordancewith“moldgrowthandhumidity” testinASTMC1338,G21,andUL181orcomparabletestmethod.Airstreamsurfacesshallbeevaluatedin accordancewiththe“ErosionTest”inUL181,aspartofASTMC1071.

5.Baseofunitshallhaveaminimumoffourlocationsforfactorythru-the-baseelectricalconnections.Connections shallbeinternaltothecabinettoprotectfromenvironmentalissues.

6.BaseRail

a.Unitshallhavebaserailsonaminimumof2sides.

b.Holesshallbeprovidedinthebaserailsforriggingshacklestofacilitatemaneuveringandoverheadrigging.

c.Holesshallbeprovidedinthebaserailformovingtherooftopbyforktruck.

d.Baserailshallbeaminimumof16gaugethickness.

7.Condensatepanandconnections:

a.Shallbeaslopedcondensatedrainpanmadeofanon-corrosivematerial.

b.ShallcomplywithASHRAEStandard62.

c.Shallusea3/4-in-14NPTdrainconnectionattheendofthedrainpan.Connectionshallbemadeper manufacturer’srecommendations.

8.Toppanel:

a.Shallbeamulti-piecetoppanellinkedwithwatertightflangesandinterlockingsystems.

9.ElectricalConnections

a.Allunitpowerwiringshallenterunitcabinetatasingle,factory-prepared,knockoutlocation.

b.Thru-the-basecapability

(1.) Thru-the-baseprovisions/connectionsareavailableasstandardwitheveryunit.Whenbottomconnections arerequired,fieldfurnishedcouplingsarerequired.

(2.) Nobasepanpenetration,otherthanthoseauthorizedbythemanufacturer,ispermitted.

10.Componentaccesspanels(standard)

a.Cabinetpanelsshallbeeasilyremovableforservicing.

b.Unitshallhaveonefactory-installed,tool-less,removable,filteraccesspanel.

c.Panelscoveringcontrolboxandfiltersshallhavemoldedcompositehandleswhilethebloweraccessdoor shallhaveanintegratedflangeforeasyremoval.

d.HandlesshallbeUVmodified,composite,permanentlyattached,andrecessedintothepanel.

e.Screwsontheverticalportionofallremovableaccesspanelshallengageintoheatresistant,molded compositecollars.

f.Collarsshallberemovableandeasilyreplaceableusingmanufacturerrecommendedparts. 238119.13.H.Coils

1.StandardAluminumFin/CopperTubeCoils:

a.Standardevaporatorandcondensercoilsshallhavealuminumlancedplatefinsmechanicallybondedto seamlessinternallygrooved5/16”diametercoppertubeswithalljointsbrazed.

b.Evaporatorcoilsshallbeleaktestedto150psig,pressuretestedto450psig,andqualifiedtoUL1995burst testat1775psig.

c.Condensercoilsshallbeleaktestedto150psig,pressuretestedto650psig,andqualifiedtoUL1995burst testat1980psig.

2.OptionalPre-coatedaluminum-fincondensercoils:

a.Shallhaveadurableepoxy-phenoliccoatingtoprovideprotectioninmildlycorrosivecoastalenvironments.

b.Coatingshallbeappliedtothealuminumfinstockpriortothefinstampingprocesstocreateaninertbarrier betweenthealuminumfinandcoppertube.

c.Epoxy-phenolicbarriershallminimizegalvanicactionbetweendissimilarmetals.

d.Corrosiondurabilityoffinstockshallbeconfirmedthroughtestingtobenolessthan1000hourssaltspray perASTMB117-90.

e.Corrosiondurabilityoffinstockshallbeconfirmedthroughtestingtohavenovisiblecorrosionafter48 hourimmersioninaroomtemperaturesolutionof5%salt,1%aceticacid.

f.Finstockcoatingshallpass2000hoursofthefollowing:oneweekexposureintheprohesionchamber followedbyoneweekofacceleratedultravioletlighttesting.Prohesionchamber:thesolutionshallcontain 3.5%sodiumchlorideand0.35%ammoniumsulfate.Theexposurecycleisonehourofsaltfogapplication

atambientfollowedbyonehourdryingat95°F(35°C).

3.OptionalCopper-finevaporatorandcondensercoils:

a.Shallbeconstructedofcopperfinsmechanicallybondedtocoppertubesandcoppertubesheets.

b.Galvanizedsteeltubesheetsshallnotbeacceptable.

c.Apolymerstripshallpreventcoilassemblyfromcontactingthesheetmetalcoilpantominimizepotential forgalvaniccorrosionbetweencoilandpan.

4.OptionalE-coatedaluminum-finevaporatorandcondensercoils:

a.Shallhaveaflexibleepoxypolymercoatinguniformlyappliedtoallcoilsurfaceareaswithoutmaterial bridgingbetweenfins.

b.Coatingprocessshallensurecompletecoilencapsulationoftubes,finsandheaders.

c.ColorshallbehighglossblackwithglossperASTMD523-89.

d.Uniformdryfilmthicknessfrom0.8to1.2milonallsurfaceareasincludingfinedges.

e.Superiorhardnesscharacteristicsof2HperASTMD3363-92Aandcross-hatchadhesionof4B-5Bper ASTMD3359-93.

f.Impactresistanceshallbeupto160in. -lb(ASTMD2794-93).

g.Humidityandwaterimmersionresistanceshallbeuptominimum1000and250hoursrespectively(ASTM D2247-92andASTMD870-92).

h.Corrosiondurabilityshallbeconfirmedthroughtestingtobenolessthan6000hourssaltsprayperASTM B117-90.

238119.13.I.RefrigerantComponents

1.Refrigerantcircuitshallincludethefollowingcontrol,safety,andmaintenancefeatures:

a.ThermostaticExpansionValve(TXV)shallhelpprovideoptimumperformanceacrosstheentireoperating range.Shallcontainremovablepowerelementtoallowchangeoutofpowerelementandbulbwithout removingthevalvebody.

b.Refrigerantfilterdrier.

c.Servicegaugeconnectionsonsuctionanddischargelines.

d.Pressuregaugeaccessthroughaspeciallydesignedscreenonthesideoftheunit.

e.Singlecircuitdesignwithtandemcompressorandfullyactivatedevaporatorcoil

2.Compressors

a.ModelsshalluseonefullyhermetictandemscrollcompressorsoptimizedforcomfortstagingandIEER energysavings.

b.Modelsshallbeavailablewithasinglerefrigerantcircuitandthreestagecoolingoperationonallmodels.

c.Compressormotorsshallbecooledbyrefrigerantgaspassingthroughmotorwindings.

d.Compressorsshallbeinternallyprotectedfromhighdischargetemperatureconditions.

e.Compressorsshallbeprotectedfromanover-temperatureandover-amperageconditionsbyaninternal, motoroverloaddevice.

f.Compressorshallbefactorymountedonrubbergrommets.

g.Compressormotorsshallhaveinternallinebreakthermal,currentoverloadandhighpressuredifferential protection.

h.Crankcaseheatersshallbestandardoneachcompressoranddeactivatedwheneveracompressorisinoperation. 238119.13.J. FilterSection

1.Filtersaccessisspecifiedintheunitcabinetsectionofthisspecification.

2.Filtersshallbeheldinplacebyapreformedslideoutfiltertray,facilitatingeasyremovalandinstallation.

3.Shallconsistoffactory-installed,lowvelocity,throw-away2-in.thickfiberglassfilters.

4.Filtersshallbestandard,commerciallyavailablesizes.

5.Onlyonesizefilterperunitisallowed.

6.4-infiltercapabilityispossiblewithafield-installedpre-engineeredslideoutfiltertrackaccessory.4-infilters arefieldfurnished.

238119.13.K.EvaporatorFanandMotor

1.Evaporatorfanmotor:

a.Shallhavepermanentlylubricatedbearings.

b.Shallhaveinherentautomatic-resetthermaloverloadprotectionorcircuitbreaker.

c.Shallhaveamaximumcontinuousbhpratingforcontinuousdutyoperation;nosafetyfactorsabovethat ratingshallberequired.

d.ShallbeVariableFrequencydutytomatchthethreestagecompressionlogic.

e.Shallcontainmotorshaftgroundingringtopreventelectricalbearingflutingdamagebysafelydiverting harmfulshaftvoltagesandbearingcurrentstoground.

2.VariableFrequencyDrive(VFD).ForindoorfanmotorStagedAirVolume(SAV™)operation:

a.Shallbeinstalledinsidetheunitcabinet,mounted,wiredandtested.

b.ShallcontainElectromagneticInterference(EMI)frequencyprotection.

c.InsulatedGateBi-PolarTransistors(IGBT)usedtoproducetheoutputpulsewidthmodulated(PWM) waveform,allowingforquietmotoroperation.

d.Self-diagnosticswithfaultandpowercodeLEDindicator.FieldaccessoryDisplayKitavailableforfurther diagnosticsandspecialsetupapplications.

e.RS485capabilitystandard.

f.Electronicthermaloverloadprotection.

g.5%swingingchokesforharmonicreductionandimprovedpowerfactor.

h.Allprintedcircuitboardsshallbeconformalcoated.

i.Shallnotcontainvisualdisplaytoadjustinternalsetting.Onlyavailableasfield-installedkit.

3.Belt-drivenEvaporatorFan:

a.Beltdriveshallincludeanadjustable-pitchmotorpulleyandbeltbreakprotectionsystem.

b.Shalluserigidpillowblockbearingsystemwithlubricatefittingsatareaccessibleorlubricationline.

c.Blowerfanshallbedouble-inlettypewithforward-curvedblades.

d.Shallbeconstructedfromsteelwithacorrosionresistantfinishanddynamicallybalanced. 238119.13.L.CondenserFansandMotors

1.Condenserfanmotors:

a.Shallbeatotallyenclosed–multi-speedECMmotor.

b.Shallusepermanentlylubricatedbearings.

c.Shallhaveinherentthermaloverloadprotectionwithanautomaticresetfeature.

d.Shalluseashaft-downdesign.

2.CondenserFans:

a.Shallbeadirect-drivenpropellertypefan.

b.Shallhavegalvanizedaluminum(galvalum)bladesrivetedtocorrosion-resistantsteelspidersandshallbe dynamicallybalanced.

238119.13.M. SpecialFeatures,OptionsandAccessories

1.StandardLeakEconomizers:

a.Availableasfactory-installedoption(verticalorhorizontal)orfield-installedaccessory(verticalorhorizontal)onallelectro-mechanicalandRTUOpenmodels.SystemVu™field-installedaccessory(verticalor horizontal)alsoavailable.

b.StandardleakeconomizersareavailablewithEconoMi$erXcontrolsforelectro-mechanicalunits,or EconoMi$er2controlsforRTUOpenorSystemVuunits.

c.Integrated,geardrivenopposedbladedesigntypecapableofsimultaneouseconomizerandcompressor operation.

d.Damperbladesshallbegalvanizedsteelwithcompositegears.Plasticorcompositebladesonintakeorreturn shallnotbeacceptable.

e.Shallbeequippedwithgeardrivendampersforboththeoutdoorventilationairandthereturnairforpositive airstreamcontrol.

f.Standardleakratemodelsshallbeequippedwithleakagedampers,nottoexceed2%leakageat1in.wg pressuredifferential.

g.Shallbecapableofintroducingupto100%outdoorair.

h.Economizer’sbarometricreliefdampersshallbesizedtoallowupto100%relief(actualresultswillbe basedonspecificjobconditions).

2.Ultra-LowLeakEconomizers:

a.Availableasafactory-installedoption(verticalorhorizontal)orfield-installedaccessory(verticalorhorizontal)onallmodelsincluding:electro-mechanical,RTUOpen,andSystemVu.

b.Ultra-LowLeakeconomizerdampersmeetCalifornia’sTitle24section140.4prescriptiverequirementsfor leakage,reliabilitytesting,etc.,andASHRAE90.1-2013requirementsfordamperleakage.

c.EconomizersareavailablewithEconoMi$erXcontrolsforelectro-mechanicalunits,orEconoMi$er2controls forRTUOpenorSystemVuunits.

d.Integrated,geardrivenopposedbladedesigntypecapableofsimultaneouseconomizerandcompressor operation.

e.Damperbladesshallbegalvanizedsteelwithcompositegears.Plasticorcompositebladesonintakeorreturn shallnotbeacceptable.

f.Shallbeequippedwithgeardrivendampersforboththeoutdoorventilationairandthereturnairforpositive airstreamcontrol.

g.Shallbecapableofintroducingupto100%outdoorair.

h.Economizer’sbarometricreliefdampersshallbesizedtoallowupto100%relief(actualresultswillbe basedonspecificjobconditions).

(1.) EconoMi$erXEconomizerControls:

a.Forusewithfactory-installed(verticalorhorizontal)orfield-installedaccessory(verticalorhorizontal) onelectro-mechanicalunitswithstandardleakorUltra-LowLeakeconomizers.

b.MeetsCalifornia’sTitle24section120.2mandatoryrequirementsforeconomizerFaultDetectionand Diagnosis(FDD).

c.EconomizercontrollershallbeHoneywellW7220JADEthatprovides:

i.2-lineLCDinterfacescreenforsetup,configurationandtroubleshooting.

ii.On-boardFDDdetectsandalertswheneconomizerisnotoperatingproperly.

iii.Sensorfailurelossofcommunicationidentification.

iv.Automaticsensordetection.

v.Capabilitiesforusewithmulti-speedindoorfanunits.

d.CompressorlockouttemperatureonW7220isadjustablefrom-45to80°F,setatafactorydefaultof32°F.

e.Shallbedesignedtospringreturncloseoutsideairdamperduringlossofpower.

f.Actuatorshallbedirectcoupledtoeconomizergear.Nolinkagearmsorcontrolrodsshallbeacceptable.

g.Utilizesdigitaldrybulborenthalpyoutsideairsensors.Factory-installedeconomizersavailablewith drybulborenthalpy.Drybulbsensorsinstalledonallfield-installedeconomizeraccessories.

(2.) EconoMi$er2EconomizerControls:

a.Forusewithfactory-installed(verticalorhorizontal)orfield-installedaccessory(verticalorhorizontal) onRTUOpenorSystemVu™ unitswithstandardleakorUltra-LowLeakeconomizers.Note:Factory-installedEconoMi$er2isavailableonSystemVuunitswithUltra-LowLeakeconomizersonly.

b.EconoMi$er2economizersarecontrolledbyRTUOpenorSystemVuunitcontrollers,whichshallbe 4-20mAdesign.

c.RTUOpenandSystemVucontrolsmeetCalifornia’sTitle24section120.2mandatoryrequirementsfor economizerFaultDetectionandDiagnosis.

d.Availableonfactory-installed(verticalonly)economizerswithdrybulborenthalpyoutsideairsensors.

Field-installedaccessories(verticalorhorizontal)areavailablewithdrybulboutsideairsensorsonly.

e.Outdoorairsensorsetpointshallbeadjustableandshallrangefrom40to100°F(4to38°C).Additional sensoroptionsshallbeavailableasaccessories.

f.Shallbedesignedtospringreturncloseoutsideairdamperduringlossofpower.

g.Actuatorshallbedirectcoupledtoeconomizergear.Nolinkagearmsorcontrolrodsshallbeacceptable.

h.Theeconomizercontrollershallalsoprovidecontrolofanaccessorypowerexhaustunitfunction.Factoryset at100%,witharangeof0%to100%.

i.Theeconomizershallmaintainminimumairflowintothebuildingduringoccupiedperiodandprovide designventilationrateforfulloccupancy.

j.Controllershalldriveoutsideairdamperscompletelyclosedwhentheunitisintheunoccupiedmode.

k.Economizercontrollershallaccepta4-20mACO2 sensorinputforIAQ/DCVcontrol.Inthismode, dampersshallmodulatetheoutdoorairdampertoprovideventilationbasedonthesensorinput.

l.Economizercontrollershallprovideindicationswheninfreecoolingmode,intheDCVmode,orthe exhaustfancontactisclosed.

3.CondenserCoilHailGuardAssembly

a.Shallprotectagainstdamagefromhail.

b.Shallbelouveredstyledesign.

4.Unit-Mounted,Non-FusedDisconnectSwitch:

a.Switchshallbefactory-installed,internallymounted.

b.NationalElectricCode(NEC)andETLapprovednon-fusedswitchshallprovideunitpowershutoff.

c.Shallbeaccessiblefromoutsidetheunit

d.Shallprovidelocalshutdownandlockoutcapability

e.Sizedonlyfortheunitasorderedfromthefactory.Doesnotaccommodatefield-installeddevices

5.HACRBreaker

a.Thesemanualresetdevicesprovideoverloadandshortcircuitprotectionfortheunit.Factorywiredand mountedwiththeunits,withaccesscovertohelpprovideenvironmentalprotection.On575Vapplications, HACRbreakercanonlybeusedwithWYEpowerdistributionsystems.UseonDeltapowerdistribution systemsisprohibited.

b.Sizedonlyfortheunitasorderedfromthefactory.Doesnotaccommodatefield-installeddevices.

6.ConvenienceOutlet:

a.Poweredconvenienceoutlet.

(1.) Outletshallbepoweredfrommainlinepowertotherooftopunit.

(2.) Outletshallbepoweredfromlinesideofdisconnectbyinstallingcontractor,asrequiredbycode.If outletispoweredfromloadsideofdisconnect,unitelectricalratingsshallbeETLcertifiedandrated foradditionaloutletamperage.

(3.) Outletshallbefactory-installedandinternallymountedwitheasilyaccessible115-vfemalereceptacle. (4.) Outletshallinclude15ampGFIreceptacleswithindependentfuseprotection.

(5.) Voltagerequiredtooperateconvenienceoutletshallbeprovidedbyafactory-installedstep-down transformer.

(6.) Outletshallbeaccessiblefromoutsidetheunit.

(7.) Outletshallincludeafield-installed“WetinUse”cover.

b.Non-Poweredconvenienceoutlet.

(1.) Outletshallbepoweredfromaseparate115/120vpowersource. (2.) Atransformershallnotbeincluded.

(3.) Outletshallbefactory-installedandinternallymountedwitheasilyaccessible115-vfemalereceptacle. (4.) Outletshallinclude15ampGFIreceptacleswithindependentfuseprotection.

(5.) Outletshallbeaccessiblefromoutsidetheunit.

(6.) Outletshallincludeafield-installed“WetinUse”cover.

7.Fan/FilterStatusSwitch:

a.Switchshallprovidestatusofindoorevaporatorfan(ON/OFF)orfilter(CLEAN/DIRTY).

b.Statusshallbedisplayedeitherovercommunicationbus(whenusedwithdirectdigitalcontrols)orwithan indicatorlightatthethermostat.

8.CentrifugalPowerExhaust:

a.Powerexhaustshallbeusedinconjunctionwithanintegratedeconomizer.

b.Independentmodulesforverticalorhorizontalreturnconfigurationsshallbeavailable.

c.Horizontalpowerexhaustisshallbemountedinreturnductwork.

d.Powerexhaustshallbecontrolledbyeconomizercontrolleroperation.Exhaustfansshallbeenergizedwhen dampersopenpastthe0-100%adjustablesetpointontheeconomizercontrol.

9.RoofCurbs(Vertical):

a.Fullperimeterroofcurbwithexhaustcapabilityprovidingseparateairstreamsforenergyrecoveryfromthe exhaustairwithoutsupplyaircontamination.

b.Formedgalvanizedsteelwithwoodnailerstripandshallbecapableofsupportingentireunitweight.

c.Permitsinstallationandsecuringofductworktocurbpriortomountingunitonthecurb.

10.High-StaticIndoorFanMotor(s)andDrive(s):

a.High-staticmotor(s)anddrive(s)shallbefactory-installedtoprovideadditionalperformancerange.

11.OutdoorAirEnthalpySensor:

a.Theoutdoorairenthalpysensorshallbeusedtoprovidesingleenthalpycontrol.Whenusedinconjunction withareturnairenthalpysensor,theunitwillprovidedifferentialenthalpycontrol.Thesensorallowsthe unittodetermineifoutsideairissuitableforfreecooling.

12.ReturnAirEnthalpySensor:

a.Thereturnairenthalpysensorshallbeusedinconjunctionwithanoutdoorairenthalpysensortoprovide differentialenthalpycontrol.

13.IndoorAirQuality(CO2)Sensor:

a.Shallbeabletoprovidedemandventilationindoorairquality(IAQ)control.

b.TheIAQsensorshallbeavailableinductmount,wallmount,orwallmountwithLEDdisplay.Thesetpoint shallhaveadjustmentcapability.

14.Smokedetectors:

a.ShallbeaFour-WireControllerandDetector.

b.Shallbeenvironmentalcompensatedwithdifferentialsensingforreliable,stable,anddrift-freesensitivity.

c.Shallusemagnet-activatedtest/resetsensorswitches.

d.Shallhavetool-lessconnectionterminalaccess.

e.Shallhavearecessedmomentaryswitchfortestingandresettingthedetector.

f.Controllershallinclude:

(1.) Onesetofnormallyopenalarminitiationcontactsforconnectiontoaninitiatingdevicecircuitona firealarmcontrolpanel.

(2.) TwoForm-Cauxiliaryalarmrelaysforinterfacewithrooftopunitorotherequipment.

(3.) OneForm-Csupervision(trouble)relaytocontroltheoperationoftheTroubleLEDonaremotetest/ resetstation.

(4.) Capableofdirectconnectiontotwoindividualdetectormodules.

(5.) Canbewiredtoupto14otherductsmokedetectorsformultiplefanshutdownapplications.

15.Horn/StrobeAnnunciator

a.Providesanaudible/visualsignalingdeviceforusewithfactory-installedoptionorfield-installedaccessory smokedetectors.

(1.) Requiresinstallationofafield-supplied24-vtransformersuitablefor4.2VA(AC)or3.0VA(DC)per horn/strobeaccessory.

(2.) Requiresfield-suppliedelectricalbox,NorthAmerican1-gangbox,2-in(51mm)x4-in(102mm). (3.) Shallhaveaclearcoloredlens.

16.TimeGuard

a.Shallpreventcompressorshortcyclingbyprovidinga5-minutedelay(±2minutes)beforerestartinga

compressoraftershutdownforanyreason.

b.Onedeviceshallberequiredpercompressor.

17.ElectricHeat:

a.HeatingSection

(1.) Heaterelementopencoilresistancewire,nickel-chromealloy,0.29inchesinsidediameter,strungthrough ceramicinsulatorsmountedonmetalframe.Coilendsarestakedandweldedtoterminalscrewslots.

(2.) Heaterassembliesareprovidedwithintegralfusingforprotectionofinternalheatercircuitsnot exceeding48ampseach.Autoresetthermolimitcontrols,magneticheatercontactors(24vcoil)and terminalblockallmountedinelectricheatercontrolbox(minimum18gagalvanizedsteel)attachedto endofheaterassembly.

18.BarometricHood(HorizontalEconomizerApplications)

a.Shallberequiredwhenahorizontaleconomizerandbarometricreliefarerequired.Barometricrelief dampermustbeinstalledinthereturnair(horizontal)ductwork.Thishoodprovidesweatherprotection.

19.HingedAccessPanels

a.Shallprovideeasyaccessthroughintegratedquarterturnlatches.

b.Shallbeonmajorpanelsof–filter,controlbox,fanmotorandcompressor

20.DisplayKitforVariableFrequencyDrive

a.KitallowstheabilitytoaccesstheVFDcontrollerprogramstoprovidespecialsetupcapabilitiesand diagnostics.

b.Kitcontainsdisplaymoduleandcommunicationcable.

c.DisplayKitcanbepermanentlyinstalledintheunitorusedonanySAV™ systemVFDcontrollerasneeded.

21.Thermostat:

a.Duetothethreestagecoolingcapacitydesignoftheseunits,athreestagecoolingthermostatisrequiredfor theunittoperformatlistedoperatingefficiencies.

b.CarrieroffersaHoneywellbrandedT7350D(3Cool/3Heat)CommercialProgrammableThermostat.This provides:

—7-dayprogrammable365-dayclockwithholidayprogramming

—AutomaticDaylightSavingTimeadjustment

—Backlitdisplay

—Changeoverselections:automaticormanual

—Fanconfigurable:continuousorintermittentduringoccupied

22.Humidi-MiZerAdaptive® DehumidificationSystem:

a.TheHumidi-MiZerAdaptiveDehumidificationSystemshallbefactoryinstalled,certifiedandtestedto providegreaterdehumidificationoftheoccupiedspacebyprovidingtwodistinctmodesofdehumidification operationinadditiontoitsnormaldesigncoolingmode:

(1.) Subcoolingmodefurthersubcoolsthehotliquidrefrigerantleavingthecondensercoilaswellas reheatleavingairstream.Itcanprovidebothbettercoolingcapacityaswellasdehumidification processwhenbothtemperatureandhumidityinthespacearenotsatisfied.

(2.) Hotgasreheatmodeshallmixaportionofhotgasfromthedischargeofcompressorwiththehot liquidrefrigerantleavingthecondensercoiltocreateatwo-phasewarmrefrigerantinthereheatcoil whichresultsinaneutralleavingairtemperaturewhenonlyhumidityinthespaceisnotsatisfied.