Installation Instructions (cont'd)
Temperature-Pressure Relief Valve
A, WARNING
At the time of manufacturethis water heater was provided
with acomb_nat;_nm_ratu_--,_ures relief valvecerti_d
by a nationally recognized testing laboratory that maintains
periodicinspectionof productionof listedequipmentor mate-
rials, as meeting the requirements for Relief Valves and
AutomaticGasShutoffDevicesforHot Water SupplySystems,
and the latest edition of ANSI Z21.22 and the code require-
ments ofASME. If replaced,the valvemust meat the require-
ments oflocalcedes,but not lessthan a combinationtempera.
ture andpressurerelief valvecertifiedasmeeting the _luire-
meritsfor ReliefValvesandAutomaticGasShutoffDevicesfor
Hot Water SupplySystems,AHSLZ2|.Z2 by anationallyrecog.
nized testing laboratory that maintainsperiodicinspectionof
productionof llstedequipment or materials.
The valvemust be made:d with a maximum set presserenot
to exceed the marked hydrostatic working pressureof the
water heater(I 50IbsJsq.in.) and a dischargecapacitynot less
than thewater heaterinput rateas,shownon the model rating
plate. (Electric heaters • watts dividedby 1000x 3415 equal
BTU/I-Ir.rate.)
Yourlocaljurisdictionalauthority,whilemandatingtbe useof a
temperature-pressure reliefvalvecomp,Wyingwith ANSI 7.21.22
and ASME, may requirea valvemodel differentfrom the one
fomished withthe waterheater.
Compliancewith suchlocalrequirements must be satisfiedby
the installeror end userof the water heater with a locallypre-
scribedtemperature-pressure reliefvalveinstalledin the desig-
natecl openingin the water heater in placeof the factoryfur-
nishedvalve.
Forsafeoperationofthe water heate_,the relief valvemust not
bemrnovedfrom it'sdesignatedopeningor plugged.
The temperature-pressure reliefvalvemustbe installeddirectly
intothe fittingofthewaterheaterdesignatedforthe relief valve.
Pesltlenthevalvedownwerdandpravidetebing so that anydi_
chargewillexit only within 6 inchesabove,or at anydistance
below the structuralfloor.Be certainthat nocontactis made
with anyliveelectricalpart. The discha_eopeningmustnot be
Mocked or reduced in sizeunderanycircumstances.Excessive
length, avev30 fa_€,er useof mere th_ fonr elbewscancause
restriction andreducethedischargecapecityof thevalve.
No valveor other obstructionisto be placedbetweenthe relief
valveand the tank.Do nut connecttubingdirectlyto discharge
drainunlessa 6" airgapisprovided.Topreventbodilyinjury,haz-
ard tolife, or propertydamage,the relief valvemustbe allowed
to dischargewater inquantitiesshouldcircumstancesdemand.If
the dischargepipeisnot connectedto a drainor othersuitable
means,the water flowmaycausepropertydamage.
The DischargePipe:
Must not be sm_ller in size than the outiot pipe size of the
valve,or haveanyreducingcouplingsor other restrictions.
Mustnot be pluggedor blocked.
Mustbeof material listedfor hot water distribution.
Mustbe installedso asto allow completedrainageof both
the temperature-pressure relief valve, and the discharge
pipe.
Mustterminateat an adequatedrain.
Mustnot haveanyvalvebetweenthe relief valveand tank.
A WARNING
The temperature-pressure relief valve must be manually
operated ot least on©ea year,Cantion shouklbe taken to
onsore that (I) no one is in front of or around the oudet of
the temperoture-peessurerefiofvalvedischargeline, and (2)
the water manually discharged will not cause any bodily
injury or property damage because the water may be
extremely hot.
If after manually operating the valve, it failsto completely
reset and continuesto releasewater_immediately dose the
cold water inlet to the water heater, follow the draining
instructions, and replace the temperature-pressure relief
valvewlth a new ane.
-II--- q
HOT SHUTOFF COLD
VALVE
PRESSURE
REUEF VALVE
PiPE
(Do not cap or plug)
6" AIR GAP
FLOOR DRAIN
RELIEFVALVEOPENING
At sfiedineof manu_'mre,thiswaterheaterv_s edwisha€ombfoedontera-
;_-_u_ rd_ va_e_sted_sconing _'w_ _an_ for_ _ _d
automaticg)sshut-offd_cesforhotwatersupplysy_ems,ANSI7)1.22.Forsafo
opera_oeofshewaterheater,_be_ief vahemustn_ beremovedfromitsdesignated
pointofinstaria_onorplng_l.
relief_ complyingwithANSI7.21.22andASMF.mayrequireavahemodeldiffe_nt
fromtheonefurnishedwiththewaterhea_e_
ofC_iancewishsuchlocalrequirementsmustbesatisfiedby_e installerorenduser
waterheaterwi_haIo_11_prescribedter_erature-pr_sure_ief valveIn.ailed
inthedesignatedopeninginthewa_erbea_.
Seemanualbe_ding-"Temper_tur_PressureReliefValves"forinstalb_onant;mainte-
nanceofreliefvalve_dischargeline,andostlersafer/precauri_n_.
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