User`s guide

Instructions for Installation (cont'd)
Temperature-Pressure Relief Valve
AWARNING &WARNING [
At the time of manufacture this water heater was provid- The temperature-pressure relief valve must be manu- I
ed with a combination temperature-pressuresrelief valve ally operated at least once a year. Caution should be I
certifiedby a nationally recognizedtestinglaboratory that taken to ensure that (1) no one is in front of or
maintains periodic inspection of production of listed around the outlet of the temperature-pressure relief I
equipment or materials, as meeting the requirementsfor valve discharge line, and (2) the water manually dis- I
Relief Valves and Automatic Gas Shutoff Devices for Hot charged will not cause any bodily injury or property
Water Supply Systems, and the current edition of ANSI damage because the water may be extremely hot.
z21.22 and the code requirements of ASME. If replaced, If after manually operating the valve, it fails to com-
the valve must meet the requirementsof local codes, but pletely reset and continues to release water, immedi-
not less than a combination temperature and pressure ately close the cold water inlet to the water heater,
relief valve certified as meeting the requirements for follow the draining instructions, and replace the
Relief Valves and Automatic Gas Shutoff Devicesfor Hot temperature-pressure relief valve with a new one.
Water Supply Systems,ANSI Z21.22 by a nationally recog, t
nizedtesting laboratorythat maintainsperiodicinspection
of productionof listed equipment or materials.
The valve must be marked with a maximum set pressure
not to exceedthe marked hydrostaticworking pressureof ! _/_l _[_ / (/_ SHUTOFFvALVE
the water heater (150 Ibs./sq.in.) and a dischargecapacity _l_J __
not lessthan the water heater input rate asshown on the ,[
model rating plate, (Electric heaters - watts divided by, _ COLD
1000x 3415 equal BTU/Hr.rate.)
Your local jurisdictional authority, while mandating the
useof a temperature-pressurerelief valve complyingwith
ANSI Z21.22 and ASME, may require a valve model differ-
ent from the one furnishedwith the water heater.
Compliancewith suchlocalrequirements must be satisfied
by the installer or end user of the water heater with a
locally prescribed temperature-pressure relief valve
installed in the designated opening in the water heater in
placeof the factoryfurnished valve. -TEMPERATURE-
For safe operation of the water heater, the relief valve PRESSURE
RELIEFVALVE
must not be removed from it's designated opening or
plugged. L
The temperature-pressure relief valve must be installed
directly into the fitting of the water heater designatedfor - DISCHARGEPIPE
the relief valve. Positionthe valve downward and provide (Donotcapor plug]
tubing so that any discharge will exit only within 6 inches __
above, or at any distance below the structural floor. Re
certain that no contact is made with any live electrical
part. The discharge opening must not be blocked or
reduced in sizeunder any circumstances.Excessivelength,
over 30 feet, or use of more than four elbows can cause
restrictionand reducethe dischargecapacityof the valve.
No valveor other obstructionisto be placed between the _ 6 AIRGAP
relief valve and the tank. Do not connect tubing directly to FLOOR_RA_----------J_IN _-_
I dischargedrain unlessa 6" air gap is provided. To prevent
bodily injury, hazardto life, or property damage,the relief
valve must be allowed to discharge water in quantities
should circumstancesdemand. If the dischargepipe is not RELIEF VALVE OPENING
connected to a drain or other suitable means,the water
flow may causepropertydamage. "THISWATERHEATERISAPPROVEDWITHACOMBINATIONTEMPERATURE-
The DischargePipe: PRESSURERELIEFVALVE.FORSAFEOPERATIONOFTHEWATERHEATER,
THERELIEFVALVE(S)MUSTNOTBEREMOVEDFROMITSDESIGNATED
Must not be smaller in size than the outlet pipe size of POINTOFINSTALLATIONORPLUGGED."
the valve, or have any reducing couplings or other YOURLOCALJURISDICTIONALAUTHORITY,WHILEMANDATINGTHEUSE
restrictions. OFATEMPERATURE-PRESSURERELIEFVALVECOMPLYINGWITHANSI
Must not be plugc_edor blocked, z21.22ANDASME,MAYREQUIREAVALVEMODELDIFFERENTFROMTHE
Must be of material listedfor hot water distribution. ONEFURNISHEDWITHTHEWATERHEATER.
Must be installed so as to allow complete drainage of I COMPLIANCEWITHSUCHLOCALREQUIREMENTSMUSTBESATISFIEDBY
both the temperature-pressurerelief valve, and the dis- I THEINSTALLERORENDUSEROFTHEWATERHEATERWITHA LOCALLY
chargepipe. I PRESCRIBEDTEMPERATURE-PRESSURERELIEFVALVEINSTALLEDiNTHE
Mustterminate at an adequate drain. DESIGNATEDOPENINGINTHEWATERHEATER.
Must not have any valve between the relief valve and [ SEEMANUALHEADING- "TEMPERATURE-PRESSURERELIEFVALVES"FOR
i INSTALLATIONANDMAINTENANCEOFRELIEFVALVE,DISCHARGELINE
tank, ( ANDOTHERSAFETYPRECAUTIONS.
I
31