Electric Water Heater Owners Manual

Installation Instructions (cont'd)
Temperature-Pressure
Relief Valve
A WARNING
At thetime ofmanufacturethiswater heaterwasprovidedwith
a combinationtemperature-pressuresrelief valvecertifiedby a
nationallyrecognizedtestinglaboratorythat maintainsperiodic
inspectionof productionof listedequipmentor materials,as
meetingthe requirementsfor ReliefValvesandAutomaticGas
ShutoffDevicesfor Hot Water SupplySystems,and the latest
edition ofANSI Z21.22andthe coderequirements of ASHE.If
replaced,the valvemustmeet the requirementsof localcodes
butnot lessthan a combinationtemperature andpressurerelief
valvecertifiedasmeetingthe requirementsfor ReliefValvesand
AutomaticGasShutoffDevicesfor Hot Water SupplySystems,
ANSI Z21.22 by a nationally recognizedtestinglaboratorythat
maintainsperiodicinspectionof productionof listedequipment
ormaterials.
The valvemustbe markedwith a maximum setpressurenot
to exceed the marked hydrostaticworking pressureof the
water heater (150 Ibsdsq.in.) and a dischargecapacitynot
lessthan the water heater input rate asshownon the model
rating plate.(Electric heaters- watts dividedby 1000x 3415
equalBTU/Hr. rate,)
Yourlocaljurisdictionalauthority,whilemandatingthe useof a
temperature-pressurerelief valvecomplyingwith ANSI Z21.22
andASME,mayrequire avanemodel differentfromthe onefur-
nishedwith the water heater.
Compliancewith suchlocalrequirements must be satisfiedby
the installeror end userof the water heaterwith a locallypre-
scribed temperature-pressurerelief valveinstalledin the desig-
natedopeningin the water heaterin placeof the factoryfur-
nishedvalve.
Forsafeoperationofthe water heater,thereliefvalvemustnot
beremovedfromit'sdesignatedopeningor plugged.
The temperature-pressurerelief valvemustbe installeddirectly
intothe fittingofthe water heaterdesignatedforthe relief valve.
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 other obstructionisto beplacedbetweenthe relief
valveandthe tank.Do not connecttubingdirectlyto discharge
drainunlessa 6" air gapisprovided.To preventbodilyinjury,
hazardto life,or property damage,the relief valve must be
allowedto dischargewater in quantitiesshouldcircumstances
demand.If the dischargepipeisnot connectedto a drainor
i other suitable means,the water flow may cause property
damage.
:The DischargePipe:
: Mustnot be smallerinsizethan the outlet pipesizeofthe
valve,or haveanyreducing couplingsor other restrictions.
Mustnot be pluggedor blocked.
• Mustbe of materiallistedfor hotwater distribution.
! Mustbe installedsoasto allow completedrainageof both
the temperature-pressurerelief valve,and the discharge
pipe.
t Mustterminate at an adequatedrain.
Mustnot haveanyvalvebetween the rolief valveandtank.
&WARNING
The temperature-pressure relief valve must be manually
operated at leastonce a year. Caution should be 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 cause any
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 cold water inlet to the water heater,follow the drain-
ing instructions, and replace the temperature-pressure
relief valve with a new one.
HOT
.TEMPERATURE-
PRESSURE
RELIEF VALVE
(Do not cap or plug)
6" AIR GAP
FLOOR DRAIN
T&P RELIEF
VALVE PROBE
INTO TANK
TEMPERATURE-
PRESSURE
RELIEF VALVE
T&P
SHANK
NIPPLE ' ' ' LENGTH
• If a shor_shank (le_s than 2") temperature-pressureielie$valve is to be installed
(as shown),a nippleand couplingmust _ used
• _f a longshank(2" or longer)isto be inst_led,de not use thenipple and co_ng
InStallTemperalu_ePressurep_otectNeeou_nent_quired by _c_.aleodes,b_ notlessthana comb+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.
mg lab_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,the gekefValvem_str,_ bet_',o_d or p_gge¢
See rnar_Jalheading- Temperatule-pressureRel+elValve for installal_ona_ maintenanceof Relief
Valve¸clschargepipeandc6_etsafetypre_ubor,s
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