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Installation Instructions (cont'd)
Temperature-Pressure Relief Valve
AWARNING
At the time of manufacturethiswater heater was provided
witha combinationtemperature-pressuresreliefvalvecertified
bya nationallyrecognized testinglaboratory that maintains
periodicinspec_onofproductionoflistedequipmentor mate-
rials, as meeting the requirements for Relief Valvesand
AutomaticGasShutoffDevicesfurHot Water SupplySystems,
and the latesteditionof ANSI Z21.22 and the coderequire-
mentsofASME.If replaced,the valvemustmeet the _luire-
mentsoflocalcedes,but notlessthan acombinationtempera-
ture and pressurerelief valvecertifiedasmeetingthe require-
meritsfur ReliefValvesandAutomaticGasShutoffDevicesfor
Hot Water SupplySystems,ANSI7.21.22bya nationallyrecog-
nizedtestinglaboratorythat maintainsperiodicinspectionof
productionoflistedequipment or materials
The valvemustbe markedwith a maximumsetpressurenot
to exceedthe marked hydrostaticworking pressureof the
water heater(150IbsJsq.in.)anda dischargecapacitynot less
than the water heaterinputrate asshownonthe modelrating
plate.(Electricheaters- watts dividedby 1000x 3415 equal
BTU/Hr.rate.)
Yourlocaljurisdictionalauthority,whilemandatingthe useofa
temperature-pressurereliefvaivecomplyingwithANSI Z21.22
andASME,may require a valvemodeldifferentfrom the one
furnishedwiththe water heater.
Compliancewith suchlocalrequirementsmustbesatisfiedby
the installeror end userofthe waterheaterwith a locallypre-
scribedtemperature-pressurerelief valveinstalledin thedesig-
nated openinginthe water heater in placeofthe factory fur-
nishedvalve.
Forsafeoperationofthe waterheater,the reliefvalvemustnot
beremovedfromit'sdesignatedopeningor plugged.
Thetemperature-pressurerelief valvemustbe installeddirectly
intothefittingofthewaterheaterdesignatedforthe reliefvalve.
Positionthe valvedownwardandprovidetubingsothat anydis-
chargewill exit onlywithin6 inchesabove,or at any distance
belowthe structuralfloor.Becertainthat no contactismade
withanyliveelectricalpart.The dischargeopeningmustnotbe
blockedor reducedin sizeunderany circumstancesExcessive
length,over30feet,or useofmorethan fourelbowscancause
restrictionandreducethedischargecapacityofthevalve.
No valveor otherobstructionisto be placedbetweenthe relief
valveandthe tank.Do not connecttubing directlyto discharge
drainunlessa 6"air gapisprovided.Topreventbodilyinjury,haz-
ardto life,or propertydamage,thereliefvalvemustbeallowed
todischargewaterinquantitiesshouldcircumstancesdemand.If
the dischargepipeisnot connectedto a drainor othersuitable
means,thewaterflowmaycausepropertydamage.
The DischargePipe:
• Mustnot be smaiierin sizethan the outletpipesizeof the
valve,orhaveanyreducingcouplingsor otherrestrictions.
• Mustnot bepluggedor blocked.
• Mustbeofmateriallistedforhotwaterdistribution.
• Mustbe installedsoas to allowcompletedrainageof both
the temperature-pressurerelief valve, andthe discharge
pipe.
• Mustterminateat anadequatedrain.
• Mustnothaveanyvalvebetweenthereliefvalveandtank.
AWARNING
The temperature-pressure relief valve must be manually
operated at leastonce a _ Cautionshouldbe taken to
ensurethat (I) no one isin frontof or aroundthe outiot of
the temperature-pressure reliefvalvedischargeI'me,and (2)
the water manually dischargedwill not causeany bodily
mjury or property damage because the water may be
ex_mely hot.
If after manuallyoper_Jngthe valve, it fails to completely
resetand continuesto releasewater,immediatelyclosethe
cold water inlet to the water heater,follow the draining
instructions,and replace the temperatore-preasure relief
valvewith a newone.
HOT
TEMPERATURE-PRESSURE
RFJJEF VALVE
(Do not cap or plug)
PROVIDE A 6" AIR
GAP BETWEEN
THE END OF THE
DISCHARGE PIPE
AND DRAIN
RELIEFVALVEOPENING
At the time of manufacture, this water heater wasprovided with a cornbinadontern-
perature-pressurerelief valvelistedas complyingwith the standardfor relief valvesand
automatic gas shut-off devices for hot water supplysystems, ANSI Z21.22. For safe
operation of the water heater,the relief valvemust not be removedfrom itsdesignated
point of installationor plugged.
Your local jurisdictional authority,while mandatingthe use of a temperature-pressure
relief valve complyingwith ANSI Z21.22 and ASME,mayrequire a valvemodel different
from the one furnishedwith the water heart.
Compliancewith such local requirementsmust be satisfied bythe installeror end user
of the water heater with a locally prescribedtemperature-pressure relief valveinstalled
inthe designated openingin the water heater.
See manualheading-"Temperature-Pressure Relief Vahres"for installationandmainte-
nanceof relief valve, dischargeline,and other safetyprecautions.
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