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Installation Instructions (cont'd)
Temperature-Pressure
Relief Valve
A WARNING
At thetimeofmanufacturethiswaterheaterwasprovidedwith
= _.mbinationtemperature-pressuresreliefvalvecertifiedbya
nationallyrecognizedtestinglaboratorythat maintainsperiodic
inspectionof productionoflistedequipmentor matorlaJs,as
meetingthe requirementsfor ReliefValvesandAutomaticGas
ShutoffDevicesfor Hot Water SupplySystems,andthe latest
edition ofANSI Z21.22and the coderequirementsofASME.If
replaced,the valvemustmeet the requirementsoflocalcodes,
but notlessthana combinationtemperatureandpressurerelief
vaivecertifiedasmeetingthe requirementsfor ReliefVaivesand
AutomaticGasShutoffDevicesfor Hot Water SupplySystems,
ANSI Z21.22 bya nationallyrecognizedtestinglaberatorythat
maintainsperiodic inspectionof productionof listedequipment
or materla_
The valvemustbemarkedwith a maximum setprassurenot
to exceed the marked hydrostaticworkingpressureof the
water heater (150 IbsJsq.in.) and a dischargecapacitynot
lessthan the water heater inputrate asshownon the model
ratingplate.(Electricheaters- watts dh6dedby 1000x 3415
equal BTU/Hr. rate.)
Yourlocaljurisdictionalauthority,whilemandatingthe useofa
temperature-pressurerelief valvecomplyingwith ANSI Z21.22
andASME,mayrequireavalvemodeldifferentfromtheonefop
nishedwiththe waterheater.
Compliancewith suchIocelrequirements mustbesatisfiedby
the installeror end userofthe w_er heaterwith a locallypre-
scribedtemperature-pressurerelief valveinstalledin thedesig-
natodopeninginthe waterheater in placeof the factoryfur-
nishodvalve.
Forsafeoper'_on efthe waterheater,the reliefvaivemustnot
beremovedfromit_designatedopeningor plugged.
The temperature-pressurerelief.v_. mustbeinstalleddirectly
intothefittingof thewaterheaterdesignatedfor thereliefvaive.
Pesitionthevalvedownwardandprovidetobing suthat anydis-
chargewill exit onlywithin6 inchesabove,or at any distance
belowthe structuralfloor.Becertainthat no contactismade
with anyliveelect_ part.The dischargeopeningmustnot be
blockedor reducedin sizeunderanydmumstence_Excessive
length,over30 feet,or useofmorethanfourelbowscancause
restrict_nandreducethedischargecapacityof thevalve.
No valveor otherob_n isto be placedbetweenthe relief
valveand the tank. Do notconnecttubingdirectlyto discharge
drainunlessa 6" air gapisprovided.To preventbodilyinjury,
hazardto life,or propertydamage,the reliefvalvemustbe
ailowedto dischargewater in quantitiesshouldcircumstances
demand.If the dischargepipeisnot connectedto a drain or
other suitable means, the water flow may causeproperty
damage.
The DischargePipe:
• Mustnot be smailerin sizethantbe outletpipesizeof the
valve,or haveanyreducingcouplingsor otherrestrictions.
• Mustnot be pluggedor blocked.
• Mustbeof materiellistedfor hot water distribution.
• Mustbeinstalledsoasto allowcompletedrainageofboth
the temperature-pressure reliefvalve, and the discharge
pipe.
• Mustterminnte at anadequatedrain.
• Mustnot haveanyvaivebetweentbe reliofvalveandtank.
AWARNING
The temperature-pressure relief valve must be manually
operated at leastonce a year. Caution shouldbe taken to
ensurethat (I) no one isin 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
beextremely hot.
If after manuallyoperating the valve, it failsto completely
reset and continuesto release water, immediately, close
the coldwater inlet to the water heater, follow the drain.
ing instructions, and replace the temperature-pressure
relief valvewith a newone.
HOT
HOT
COLD
PRESSURE
RELIEF VALVE
(Do not cap or plug)
6" AIR GAP
FLOOR DRAIN
9
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