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Installation Instructions (cont'd)
Temperature-Pressure Relief Valve
a,WARNING
At the time of manufacturethis water heater was provided
with a combinationtemperature-pressuresreliefvalvecertified
bya nationally recognizedtestinglaboratorythat maintains
periodicinspectionof productionoflistedequipmentor mate-
rials, as meeting the requirements for Relief Valvesand
_utomatic GasShutoffDevicesfor Hot Water SupplySystems,
mdthe latesteditionof ANSI Z21.22 andthe coderequire.
_ents ofASME.If replaced,the valvemustmeet the require-
_ents oflocalcodes,butnot lessthanacombinationtempera-
pureandpressurerelief valvecertifiedas meetingthe require-
mentsfor ReliefValvesand AutomaticGasShutoffDevicesfor
Hot Water SupplySystems,ANSI Z21.22bya nationallyrecog-
nizedtestinglaboratorythat maintains periodic inspectionof
pTreductionoflistedequipmentor materials.
hevalvemustbemarkedwith a maximumset pressurenot
to exceedthe marked hydrostaticworkingpressureof the
waterheater (150Ibsdsq,in.)anda dischargecapacitynot less
thanthe waterheaterinputrate asshownonthemodelrating
plate.(Electric heaters- watts dividedby 1000x 3415 equal
BTU/Hr.rate.) .
Yourlocaljurisdictionalauthor_y,whilemandatingthe useofa
temperature-pressurerelief valvecomplyingwith ANSI Z21.22
and ASME,mayrequirea valvemodeldifferentfrom the one
furnishedwiththe waterheater.
Compliancewithsuchlocalrequirementsmust besatisfiedby
the installeror end userofthe water heaterwitha locallyp,re-
scribedtemperature-pressurerelief valveinstalledinthe desig-
natedopeninginthe waterheater in placeofthe factoryfur.
nishedvalve,
Forsafeoperationofthe water heater,the reliefvalvemustnot
beremovedfrom it_designatedopeningor plugged,
.Thetemperature-pressurerelief valvemustbe installeddirectly
intothefittingofthewater heaterdesignatedforthe raliefvalve.
)ositionthe valvedownwardandprovidetubingsothat anydis-
chargewillexit onlywithin 6 inchesabove,or at anydistance
)elowthe structuralfloor.Be certainthat no contact ismade
withanyliveelectricalpart.The dischargeopeningmust notbe
blockedor reducedin sizeunderany circumstances.Excessive
leng_, over30feet,or useofmorethan fourelbowscancause
restriction and reducethe dischargecapacityofthevalve.
qovalveor otherobstructionistobe placedbetweentherelief
ralveandthe tank. Do not connecttubingdirectlyto discharge
Iralnunlessa6"airgapisprovided,Topreventbodilyinjury,haz-
,'d to life,or propertydamage,the relief valvemustbeallowed
to dischargewater inquantitiesshouldcircumstancesdemand.If
the dischargepipeisnot connectedto a drainor othersuitable
means,the water flowmaycausepropertydamage.
• e DischargePipe:
Mustnot be smallerin sizethan the outlet pipesizeof the
valve,or haveanyreducingcouplingsor otherrestrictions.
Mustnot be pluggedor Mocked.
Mustbeof materiallistedfor hotwater distribution.
Mustbe installedso asto allow completedrainageof beth
the temperature-pressurerelief valve, and the discharge
pipe.
Mustterminateat anadequatedrain,
Mustnot haveanyvalvebetweenthe relief valveandtank.
AWARNING
The temperature-pressure relief valve must be manuall:
operated at least oncea year Caution shouldbe taken tt
!ensurethat (I) no one isin frontof or aroundthe outleto
the temperature-pressurereliefvaJvedischargeline,and (2)
the water manuallydischargedwill not causeany bodily
injury or property damage because the water may be
extremelyhot.
If after manual.lyoperatingthe valve,it fails,to completely
resetand continuesto releasewater,immediatelyclosethe
cold water inlet to the water heater, follow the draining
instructions,and replace the temperature-pressure relief
valvewith a new one.
HOT SHUTOFF COLD
VALVE
PRESSURE
RELIEF VALVE
[]
(Do not cap or plug)
6" AIR GAP
RELIEFVALVEOPENING
Atthe time ofmanufacture,thiswaterheaterwasprovidedwitha combinationtem-
perature-pressurereliefwive listedascomplyingwiththestandardforrelief_lves and
automaticgasshut-offdevicesforhotwatersupplysystems,ANSIZ2L22.Forsafe
operationofthev_terheater,thereliefvalvemu_notberemovedfromitsdesignated
pointofinstallationor plu/ged.
YourIota;jurisdictionalauthority,whilemandatingtheuseofatemperature-pressure
reliefvalvecomplyingwithANSi7-21.22andASHE,mayrequireavalvemodeldifferent
fromthe onefurnishedwiththewaterheater
Compliancewithsuchlocal_luirements mustbesatisfiedbytheinstalleror enduser
ofthewaterheaterwithalocallyprescribedtemperature-pressurereliefvalveinstalled
inthedesignatedopeninginthewaterheater.
Seemanualheading-'°Temperature.PressureReliefValves"forinstallationandmainte-
nanceofreliefvalve,dischargeline,andothersefe_precautions.
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