‐Do not store or use gasoline or otherflammablevaporsandliquidsinthevicinityofthisoranyotherappliance.‐WHATTODOIFYOUSM
Installation10│PageImproperventingofthisappliancecanresultinexcessivelevelsofcarbonmonoxidewhichcanresultinseverepersonalinjury
Installation11│PageExcludeselbowtermination,raincaps,orthe3”PVCConcentricTerminationFordetailsontheventconnectiontotheDirectVen
Installation12│PageImproperinstallationcancausenauseaorasphyxiation,severeinjuryordeathfromcarbonmonoxideandfluegasespoisoning.Im
Installation13│Page1. ConnectthePVCadaptor*directlyontheexhaustventcollarofthewaterheater.2. Connecta4”PVCcoupler(or4x3”PVCr
Installation14│Page1. Connecta4”PVCStraightpipedirectlyontheintakeventcollarofthewaterheater.2. Connecta4x3”PVCreducertothe
Installation15│Page‐Ventclearances‐ Canada U.S.ADirectventandotherthanDirectVentDirectvent OtherthanDirectVent
Installation16│Page‐Additionalclearances‐Pleasefollowalllocalandnationalcodesinregardstoproperterminationclearances.Intheabsence
Installation17│Page1. Turnoffallelectricpowertothewaterheaterifserviceistobeperformed.2. Turnthemanualgasvalvelocatedonth
Installation18│Page‐NaturalGasSupplyPiping‐MaximumDeliveryCapacityofCubicFeetofGasperHourofIPSPipeCarryingNaturalGasof0.60Spe
Installation19│Page1.Turnoffallelectricpowertothewaterheaterifserviceistobeperformed.2.Turnthemanualgasvalvelocatedontheout
Contents2│PageNOTE Checktheratingplatetoensurethisproductmatchesyourspecifications. In accordance with ANZI Z21.10.3, CO emiss
Installation20│Page‐Pressurereliefvalve‐Thewaterheaterhasahigh‐temperatureshutoffswitchbuiltinas a standard safety feature(call
Installation21│Page ‐CondensateDrainConnections‐Thewaterheatermodelsarehighefficiencycondensingwaterheatersthatproducecondensat
Installation22│Page The condensate drain is at atmospheric pressure (non‐pressurized) andtherefore must be allowed to drain freely
Installation23│PageREMOTECONTROLLERCONNECTION1.Disconnectpowersupplyfromthewaterheater.2.Takeoffthewaterheater’sfro
Installation24│PageInanEasy‐Linksystem,thepumpmustbeconnectedtothe“Pumpconnector”inthe“PARENTunit”only.Ifthepumpisconnectedt
Installation25│PagePUMPCONTROLMODE Thewaterheaterprovidesthefourtypesofthepumpcontrolmodes.Thepu mpcontrolmode sareselectedby
Installation26│PageD)NormalControl(Defaultsetting):No.5andNo.6OFFFeature:Thismodeprovidesnospecialpumpcontrol.Pumpactivationca
Installation27│Page TheEasy‐Linksystemislimitedupto4units.Ifyouconnectmorethan4units,onlythefirst4unitswillworkasapartof
Installation28│PageThedarksquaresindicatethedirectionthedipswitchesshouldbesetto. 4.Betweenthe“PARENT”andthe“CHILD‐1”unitsConnec
Installation29│Page CASE1: UnlessyouchangedipswitchNo.10ofthe“PARENT”unittothe“ON”position,thesystemwillnotworkasanEasy‐Lin
Introduction3│PageINTRODUCTION *Thisdiagramillustratestanklesswaterheaterdesignconceptsonl
Installation30│PageConnectingtwo“PARENTconnectors”togetherfromtwoseparateunitsmaydamagethecomputerboard.Thecommunicationcablehas
Applications31│Page In orderto purgeair in water pipe s within a closed‐loop system, an air vent andairseparator should be
Applications32│Page ‐Dual‐purposehotwaterheating‐(DomesticandSpaceHeating):*Thecirculationpumpistoprovidenoless
InitialOperation33│Page Che cktheGASandWATERCONNECTIONSforleaksbeforefiringunitforthefirsttime. Openthemaingassupplyvalv
OperatingSafety34│Page OPERATINGSAFETY FORYOURSAFETYREADBEFOREOPERATINGWARNING:Ifyoudonotfollowtheseinstructionsexactly,afireore
OperatingSafety35│Page DANGER Vaporsfromflammableliquidswillexplodeandcatchfirecausingdeathorsevereburns.Donotuseorstorefla
NormalOperation36│Page Thewaterheaterwilldisplaythesettemperatureonthe3‐digit7‐Seg.LEDonthecomputerboard.ThisLEDisvisibleth
NormalOperation37│PageDO NOT set to185 °F if you use your water heater in a recirculation system. Thiswillcausedamagetothehe
NormalOperation38│PageOnlypipeswithinthewaterheaterareprotectedbythefreezeprotectionsystem.Anywaterpipes(hotorcold)located ou
NormalOperation39│PageTurnofftheelectricalpowersupplyandclosethemanualgasshutoffvalveandthemanualwatercontrolvalvebeforeservic
SafetyGuidelines4│Page Watertemperaturesover125°F(52°C)cancausesevereburnsinstantlyordeathfromscalding.Thewatertemperatureis
Troubleshooting40│PageGENERAL TROUBLESHOOTING PROBLEM SOLUTIONS‐TEMPERATUREandAMOUNTOFHOTWATER‐Ittakeslongtimetogethotwateratthe
Troubleshooting41│Page PROBLEM SOLUTIONS‐WATERHEATER‐Unitdoesnotignitewhenwatergoesthroughtheunit. Istheflowrateover0.5
Troubleshooting42│Page ERRORCODES Theunitsareselfdiagnosticforsafetyandconveniencewhentroubleshooting. Ifthereisaproblemwith
Troubleshooting43│Page ‐FAULTANALYSISOFERRORCODES‐ Ifthereisaproblemwiththeinstallationofthewaterheater,itwilldisplayanumeric
ComponentsDiagram44│PageCOMPONENTSDIAGRAM CaseassemblyDirectVentIndoormodelsOutdoormodels0010070540067030520040030527021520050020510080090
ComponentsDiagram45│Page BurnerassemblyComputerboardassembly709423710720114711704705
ComponentsDiagram46│PageA4014024034044074084094104114124134144154164174184194204144214224234244254284144294144364304324334194344354384404414427064
PartsList47│PagePARTSLIST Item# DescriptionPart#520and320modelsT‐H2 andT‐H2Smodels001002003004005CaseassemblyforDirectVentInd
PartsList48│Page Item# DescriptionPart#520and320modelsT‐H2andT‐H2Smodels127128HeatexchangerO‐ringP20NBR319143‐056319143‐057EX12ZEK
PartsList49│Page Item# DescriptionPart#520and320modelsT‐H2andT‐H2Smodels442443444445446Hi‐limitswitchforexhaustFastener“14‐2
Installation5│Page Installation and service must be performed by a qualified installer (forexample, a licensed plumber or gas fit
OutputTemperatureChart‐50‐│PageOUTPUTTEMPERATURECHARTOutput Temperature vs. GPM (Max. 9.0 GPM) with Various Ground Water TemperatureChart is
Warranty‐51‐│PageLIMITEDWARRANTY1. Generaltermsoflimitedwarranty:Thislimitedwarrantygivesyouspecificlegalrights,andyoumayalso
Warranty‐52‐│Page3. Repair,ReplacementorRefund:The manufacturer or its authorized Service Representative will, at its sole discre
Installation6│PageGENERAL1. Follow all local codes, or in the absence of local codes, follow the most recent edition of theNat
Installation7│Page OPTIONALITEMS 1.TemperatureRemoteController:9007603005(TM‐RE30)The Temperature Remote Controller has two function
Installation8│PageWARNINGFORINSTALLATIONS FORYOURSAFETY,READBEFOREINSTALLATION:Do not install the heater where water, debris orfl
Installation9│PageThedarksquaresindicatethedirectionthedipswitchesshouldbesetto. LeftbankofdipswitchesLeftbankofdipswitches Th
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