Temperature-Pressure Relief Valve - Maytag HJ640NBDS User Manual

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
certified by a nationally recognizedtesting laboratory 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 requirements for 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 requirements of 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
nized testing laboratory that maintains periodic inspection
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 as shown on the ,[
model rating plate, (Electric heaters - watts divided by, _ COLD
1000 x 3415 equal BTU/Hr.rate.)
Your local jurisdictional authority, while mandating the
useof a temperature-pressurerelief valve complying with
ANSI Z21.22 and ASME, may require a valve model differ-
ent from the one furnished with 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 factory furnished valve. -TEMPERATURE-
For safe operation of the water heater, the relief valve PRESSURE
RELIEF V ALVE
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 - DISCHARGE PIPE
the relief valve. Positionthe valve downward and provide (Donot cap
or 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 size under any circumstances. E xcessive length,
over 30 feet, or use of more than four elbows can cause
restrictionand reducethe dischargecapacity of the valve.
No valve or 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, hazard to life, or property damage, the relief
valve must be allowed to discharge water in quantities
should circumstances demand. If the dischargepipe is not RELIEF VALVE OPENING
connected to a drain or other suitable means, the water
flow may causeproperty damage. "THIS WATER HEATER IS APPROVED WITH ACOMBINATION TEMPERATURE-
The DischargePipe: PRESSURE RELIEF VALVE. FOR SAFE OPERATION OFTHE WATER H EATER,
THE RELIEF VALVE(S) MUST NOT BEREMOVED FROM ITS DESIGNATED
Must not be smaller in size than the outlet pipe size of POINT OFINSTALLATION OR PLUGGED."
the valve, or have any reducing couplings or other YOUR LOCAL JURISDICTIONAL AUTHORITY, WHILE MANDATING THE USE
restrictions. OFATEMPERATURE-PRESSURE RELIEF VALVE C OMPLYING WITH ANSI
Must not be plugc_ed or blocked, z21.22 AND ASME, MAYREQUIRE AVALVE MODEL DIFFERENT FROM THE
Must be of material listed for hot water distribution. ONE FURNISHED WITH THE WATER HEATER.
Must be installed so as to allow complete drainage of I COMPLIANCE WITH SUCH LOCAL REQUIREMENTS MUST BE SATISFIED BY
both the temperature-pressurerelief valve, and the dis- I THE INSTALLER OREND USER O FTHE WATER H EATER WITH A LOCALLY
chargepipe. I PRESCRIBED TEMPERATURE-PRESSURE RELIEF VALVE I NSTALLED iN THE
Must terminate at an adequate drain. DESIGNATED OPENING INTHE WATER HEATER.
Must not have any valve between the relief valve and [ SEE MANUAL HEADING
-
"TEMPERATURE-PRESSURE RELIEF VALVES" FOR
i INSTALLATION ANDMAINTENANCE OFRELIEF VALVE, DISCHARGE LINE
tank, ( AND OTHER SAFETY PRECAUTIONS.
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