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Installation Instructions (cont'd)
Temperature-Pressure
Relief Valve
A WARNING
At thetime ofmanufacturethiswaterheaterwasprovidedwith
a combinationtemperature-pressuresrelief valvecertifiedbya
nationallyrecognizedtestinglaboratorythat maintainsperiodic
inspectionof productionof listedequipmentor materials,as
meetingthe requirementsfor ReliefValvesandAutomaticGas
ShutoffDevicesfor Hot Water SupplySystems,and the latest
edition ofANSI Z21.22andthe coderequirementsof ASHE.If
replaced,the valvemustmeet the requirementsof localcodes
butnot lessthan a combinationtemperature andpressurerelief
valvecertifiedasmeetingthe requirementsfor ReliefValvesand
AutomaticGasShutoffDevicesfor Hot Water SupplySystems,
ANSI Z21.22 bya nationally recognizedtestinglaboratorythat
maintainsperiodicinspectionof productionof listedequipment
ormaterials.
The valvemustbe markedwith a maximum setpressurenot
to exceedthe marked hydrostaticworking pressureof the
water heater (150 Ibsdsq.in.) and a dischargecapacitynot
lessthan the water heater input rate asshownon the model
rating plate.(Electricheaters- watts dividedby 1000x 3415
equalBTU/Hr. rate,)
Yourlocaljurisdictionalauthority,whilemandatingthe useofa
temperature-pressurerelief valvecomplyingwith ANSI Z21.22
andASME,mayrequire avanemodel differentfromtheonefur-
nishedwith thewaterheater.
Compliancewith suchlocalrequirements must besatisfiedby
the installeror end userofthe water heaterwitha locallypre-
scribed temperature-pressurerelief valveinstalledin the desig-
natedopeningin the water heaterin placeof the factoryfur-
nishedvalve.
Forsafeoperationofthe waterheater,thereliefvalvemustnot
beremovedfromit'sdesignatedopeningor plugged.
The temperature-pressurereliefvalvemustbe installeddirectly
intothefittingofthe water heaterdesignatedforthe reliefvalve.
Positionthe valvedownwardand providetubing sothat anydis-
chargewillexit onlywithin 6 inchesabove,or at any distance
belowthe structuralfloor.Be certainthat no contactismade
with anyliveelectricalpart.The dischargeopeningmustnot be
blockedor reduced in sizeunderanycircumstances. Excessive
length,over30feet,or useof morethan fourelbowscancause
restriction andreducethedischargecapacityofthe valve.
No valveor otherobstructionisto beplacedbetweenthe relief
valveandthe tank.Do not connecttubingdirectlyto discharge
drainunlessa 6" air gapisprovided.To preventbodilyinjury,
hazardto life,or property damage,the relief valvemust be
allowedto dischargewater in quantitiesshouldcircumstances
demand.If the dischargepipe isnot connectedto a drainor
i other suitable means,the water flow may causeproperty
damage.
:The DischargePipe:
: Mustnot be smallerinsizethan the outlet pipesizeofthe
valve,or haveanyreducing couplingsor other restrictions.
Mustnot be pluggedor blocked.
• Mustbe ofmateriallistedfor hotwater distribution.
! Mustbe installedsoasto allow completedrainageof both
the temperature-pressurerelief valve,and the discharge
pipe.
t Mustterminate at anadequatedrain.
Mustnot haveanyvalvebetween the rolief valveandtank.
&WARNING
The temperature-pressure relief valve must be manually
operated at leastonce a year. Caution shouldbe taken to
ensurethat (I) no one is in front of or around the outlet
of the temperature-pressure relief valve discharge line,
and (2) the water manually dischargedwill not causeany
bodilyinjury or property damage becausethe water may
be extremely hot.
If after manually operating the valve, it failsto completely
reset and continues to release water, immediately, close
the coldwater inlet to the water heater,followthe drain-
ing instructions, and replace the temperature-pressure
relief valvewith a newone.
HOT
.TEMPERATURE-
PRESSURE
RELIEF VALVE
(Do not cap or plug)
6" AIR GAP
FLOOR DRAIN
T&P RELIEF
VALVEPROBE
INTOTANK
TEMPERATURE-
PRESSURE
RELIEF VALVE
T&P
SHANK
NIPPLE ' '' LENGTH
• If a shor_shank (le_s than 2") temperature-pressureielie$valve isto be installed
(as shown),a nippleand couplingmust _ used
• _fa longshank(2"or longer)isto be inst_led,de not use thenipple and co_ng
InStallTemperalu_ePressurep_otectNeeou_nent_quired by_c_.aleodes,b_ notlessthanacomb+ha.
bo,, Temperature Pressure Relief Valve certified as meeting the requi;ements for Relief Valves and
AutomaticGasShutoff_ 1o'Hot-water Supd.ySystems¸A_S 72122by _na_0nally_ecc_zed test.
mglab_aton/that_ periodc_specaca ofpn:ducbt_olIm_:l equprnemor marshalsTheva;ve
rn_ beode_l_, pmV,ded_€_hM:ing, c<_ mstal_d soI_ d_so3an_ecanexatonlyw_n 6 _ch_s
above,ot atanydistancebelowB-,as_tural IIo_,andcannotcontactanyliveelectricalpa_
Forsaleope_on c+If_ wate_heater,thegekefValvem_str,_ bet_',o_d orp_gge¢
See rnar_Jalheading- Temperatule-pressureRel+elValve for installal_ona_ maintenanceof Relief
Valve¸clschargepipeandc6_etsafetypre_ubor,s
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