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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 nationallyrecognized testing laboratory that maintains
periodic inspectionof productionof listedequipmentor 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,but not lessthan a combinationtempera-
ture and pressurerelief valvecertified asmeetingthe requi_-
ments for ReliefValvesand Automatic GasShutoff Devicesfor
Hot Water SupplySystems,ANSI Z21.22 byanationally recog-
nizedtesting laboratory thut maintainsperiodic inspectionof
_roductionof listedequipmentor materials.
The valve must he markedwith 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 useofa
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 userofthe 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 fittingofthe waterheater designatedforthe reliefvahre.
Positionthe valvedownwardand providetubingsothat anydis-
chargewill exit onlywithin 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" airgapisprovided.Topreventbodilyinjury,haz-
ardto life,or propertydamage,the relief valvemusthe allowed
todischargewater in quantitiesshouldcircumstancesdemand.If
the dischargepipeisnot connectedto a drainor other suitable
means,the water flowmaycausepropertydamage.
The DischargePipe:
Must not be smaller in size than the outlet pipe size ofthe
valve,or haveanyreducingcouplingsor other restrictions.
Mustnot be pluggedor blocked.
Musthe ofmateriallistedfor 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 valveandtank.
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 anow one.
VALVE
PRESSURE
RELIEF VALVE
[] (Do not cap or plug)
6" AIR GAP
FLOOR DRAIN
RELIEFVALVEOPENING
At the time of manufacture,thiswater heaterwasprovidedwi_ a c0mbinariontem-
perature-pressurereliefv_ve listedas complyingwiththestinderdforreliefvalvesand
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 Z21.22 andASHE mayrequireavalvemodeldifferent
from the o_efurnishedwiththe water heater
Compliancewith suchlocalrequirementsmustbe satisfiedbythe installeror end user
of the wau_rheaterwitha Iocabyprescribedtemperature-pressurereliefvalveinstalled
inthe designatedopeninginthewater be_te_
See manualhe_ding-'_lemberature-PressureReliefValves"for installarionandmainte-
nanceof relief valve,dischargeline,andother safe_precautions.
12
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