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Installation Instructions (cont'd)
Temperature-Pressure Relief Valve
AWARNING
At the time of manufacture this water heater was provided
with a combinationtemperature-pressuresreliefvalvecertified
by a nationally recognized testing laboratory that maintains
periodic inspectionof productionoflistedequipment or mate-
rials, as meeting the requirements for Relief Valves and
Automatic GasShutoffDevicesfor Hot Water SupplySystems,
and the latest edition of ANSI Z21.22 and the code require-
mentsof ASME. If replaced,the valve mustmeat the require-
ments of localcodes,butnot lessthan a combinationtempera-
ture and pressurerelief valvecertified asmeetingthe requi_-
ments for ReliefValvesand Automatic GasShutoff Devicesfor
Hot Water SupplySystems,ANSI Z21.22 bya nationally recog-
nized testing laboratory thut maintainsperiodic inspectionof
_roduction oflistedequipmentor materials.
The valve must he marked with a maximum set pressurenot
to exceed the marked hydrostatic working pressure of the
water heater (150 IbsJsq.in.) and a dischargecapacitynot less
thanthe water heater inputrate asshownon the modelrating
plate. (Electric heaters • watts divided by 1000 x 3415 equal
BTU/Hr. rate.)
Yourlocaljurisdictional_thority, while mandatingthe useof a
temperature-pressurerelief valvecomplyingwith ANSI Z21.22
and ASME, may require a valve model differentfrom the one
fomished with the water heater.
Compliancewith suchlocalrequirementsmust be satisfiedby
the installeror end userof the water heater with alocallypre-
scribed temperature-pressurereliefvalveinstalledinthe desig-
nated openingin the water heater in placeof the factory fur-
nishedvalve.
For safeoperationofthe water heater,the reliefvalvemustnot
he removedfrom it'sdesignatedopeningor plugged.
The temperature-pressurereliefvalvemusthe installeddirectly
intothe fittingof the waterheater designatedforthe relief vahre.
Positionthe valvedownwardand providetubingsothat anydis-
chargewill exit only within 6 inchesabove,or at any distance
belowthe structuralfloor.Be certain that no contact ismade
with anyliveelec_cal part. The dischargeopeningmustnot be
Mockedor reduced in sizeunder anycircumstances.Excessive
length,over 30 feet,or useof more than four elbowscancause
restrictionandreducethe dischargecapacityofthevalve.
No valveor other obstructionisto he placedbetweenthe relief
valveand the tank. Do not connecttubing directlyto discharge
drainunlessa6" airgapis provided.Topreventbodilyinjury,haz-
ard to life,or property damage,the relief valvemusthe allowed
todischargewater in quantitiesshouldcircumstancesdemand.If
the dischargepipe isnot connectedto a drainor other suitable
means,the water flowmaycausepropertydamage.
The DischargePipe:
Must not be smaller in size than the outlet pipe size of the
valve,or haveanyreducingcouplingsor other restrictions.
Mustnot be pluggedor blocked.
Musthe ofmaterial listedfor hot water distribution.
Must be installedso as to allow complete drainageof both
the temperature-pressure relief valve, and the discharge
pipe.
Mustterminate at an adequatedrain.
Mustnot haveany valvebetween the relief valveand tank.
AWARNING
The temperature-pressure relief valve must be manually
operated at least once a year. Caution should be 'mlconto
ensure that (I) on one is in front of or around the outlet of
the temperature-pressure relief valve dischargeline, and (2)
the water manually discharged will not cause any bodily
injury or property damage because the water may be
extremelyhot
If after manually operating the valve, it fails to completely
reset and continuesto release water, immediately dose the
cold water inlet to the water heater, follow the draining
instructions, and replace the temperature-pressure relief
valvewith a now one.
VALVE
PRESSURE
RELIEF VALVE
[] (Do not cap or plug)
6" AIR GAP
FLOOR DRAIN
RELIEFVALVEOPENING
At the time ofmanufacture,thiswater heaterwasprovidedwi_ a c0mbinariontem-
perature-pressurereliefv_ve listedascomplyingwiththestinderdforreliefvalvesand
automaticgasshut-offde_cesfor hot water supplysystems,ANSI Z21.22. Forsafe
operarionof the water heater,the relief valvemustnot beremovedfromitsdesignated
_i_ of installationor plugged,
ur Iool jutisdicdonalauthori_,while mandatingthe useof a temperatur_pre_sure
retiefvalvecomplyingwithANSI Z21.22andASHE mayrequireavalvemodeldifferent
from the o_efurnishedwiththe water heater
Compliancewith suchlocalrequirementsmustbe satisfiedbythe installeror end user
ofthe wau_rheaterwitha Iocabyprescribedtemperature-pressurereliefvalveinstalled
inthe designatedopeninginthewaterbe_te_
Seemanualhe_ding-'_lemberature-PressureReliefValves"for installarionandmainte-
nanceofrelief valve,dischargeline,andother safe_precautions.
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