Water Heater User Manual

Installation Instructions (cont'd)
Temperature-Pressure Relief Valve
AWARNING
At the time of manufacturethiswater heater was provided
witha combinationtemperature-pressuresrelief valvecertified
bya nationallyrecognized testinglaboratory that maintains
periodicinspec_onofproductionof listedequipmentor mate-
rials, as meeting the requirements for Relief Valves and
AutomaticGasShutoffDevicesfurHot Water SupplySystems,
and the latest edition of 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,ANSI 7.21.22bya 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 useof a
temperature-pressurereliefvaivecomplyingwithANSI Z21.22
andASME,may require a valvemodeldifferentfrom the one
furnishedwiththe water heater.
Compliancewith suchlocalrequirementsmust be satisfiedby
the installeror end userof the 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
intothe fittingofthewaterheaterdesignatedforthe relief valve.
Positionthe valvedownwardandprovidetubingsothat any dis-
chargewill exit onlywithin6 inchesabove,or at any distance
belowthe structuralfloor.Becertainthat no contactismade
withanyliveelectricalpart.The dischargeopeningmustnotbe
blockedor reduced in sizeunderany circumstancesExcessive
length,over30feet, or useof morethan 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,therelief valvemustbeallowed
todischargewaterinquantitiesshouldcircumstancesdemand.If
the dischargepipeisnot connectedto a drainor othersuitable
means,thewaterflowmaycausepropertydamage.
The DischargePipe:
• Mustnot be smaiierin sizethan the outletpipesizeof the
valve,or haveany reducingcouplingsor otherrestrictions.
• Mustnot be pluggedor blocked.
• Mustbeof materiallistedforhotwater distribution.
• Mustbe installedsoas to allowcompletedrainageof both
the temperature-pressurerelief valve, andthe discharge
pipe.
• Mustterminateat anadequatedrain.
• Mustnothaveanyvalvebetweentherelief valveandtank.
AWARNING
The temperature-pressure relief valve must be manually
operated at least once a _ Cautionshouldbe taken to
ensurethat (I) no one isin frontof or aroundthe outiot of
the temperature-pressure relief valvedischargeI'me,and (2)
the water manually dischargedwill not cause any bodily
mjury or property damage because the water may be
ex_mely hot.
If after manuallyoper_Jng the 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 removed from its designated
point of installationor plugged.
Your local jurisdictional authority,while mandating the 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 installationand mainte-
nanceof relief valve, dischargeline, and other safetyprecautions.
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