Temperature-Pressure Relief Valve - Maytag HJ640NOVET User Manual

Instructions for Installation (cont'd)
Temperature-Pressure Relief Valve
_WARNING AWARNING
At the time of manufacture this water heater was provid- The temperature-pressure relief valve must be manu-
ed with a combination temperature-pressuresrelief valve all)' operated at least once a year. Caution should be
certified by a nationally recognized testing 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
equipment or materials, as meeting the requirements for valve discharge line, and (2) the water manually dis-
Relief Valves and Automatic Gas Shutoff Devices for Hot
charged will not cause any bodily injury or property
Water Supply Systems, and the latest 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 Devices for Hot temperature-pressure relief valve with a new one.
Water Supply Systems,ANSI Z21.22 by a nationally recog-
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 exceed the marked hydrostaticworking pressureof
the water heater (150 Ibs./sq. in.) and a dischargecapacity
not lessthan the water heater input rate as shown on the
model rating plate. (Electric heaters - watts divided by
1000 x 3415 equal BTU/Hr.rate.) COLD
Your local jurisdictional authority, while mandating the
use of a temperature-pressure relief valve complying with
ANSI Z21.22 and ASME, may require a valve model differ-
ent from the one furnished with the water heater.
TEMPERATURE-PRES-
Compliancewith suchlocal requirements must be satisfied
/
SURE REUEF V ALVE
by the installer or end user of the water heater with a /f
Iocallyprescribed temperature-pressure relief valve
installed in the designated opening in the water heater in
place of the factory furnishedvalve. HOT
For safe operation of the water heater, the relief valve
must not be removed from it's designated opening or -- DISCHARGE PIPE
lugged. (Do not capor plug)
_perature-pressure relief valve must be installed PROVIDE A 6" AIR
into the fitting of the water heater designatedfor GAPBETWEEN THE
'alve. Positionthe valve downward and provide ENDOFTHE DISCHARGE PIPE
tubing so that any dischargewill exit only within 6 inches ANDDRAIN
above, or at any distance below the structural floor. Be
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. Excessivelength,
over 30 feet, or use of more than four elbows can cause
restriction and reducethe dischargecapacity of the valve.
No valve or other obstruction is to be placed between the
relief valve and the tank. Do not connect tubing directly to RELIEF VALVE OPENING
dischargedrain unlessa 6" air gap is provided. To prevent
bodily injury, hazard to life, or property damage, the relief "THIS WATER HEATER IS APPROVED WITH A COMBINATION TEMPERATURE-
PRESSURE RELIEF VALVE. FOR SAFE OPERATION OFTHE WATER H EATER,
valve must be allowed to discharge water in quantities THERELIEF VALVE(S) MUST NOT BEREMOVED FROM ITS DESIGNATED
shouldcircumstances demand. If the dischargepipe is not POINT OFiNSTALLATiON OR PLUGGED."
connected to a drain or other suitable means, the water YOUR LOCAL JURISDICTIONAL AUTHORITy, WHILE MANDATING THE USE
flow may causeproperty damage. OFA TEMPERATURE-PRESSURE RELIEF VALVE C OMPLYING WITH ANSi
The DischargePipe: z21.22 AND ASME, MAY REQUIRE AVALVE M ODEL DIFFERENT FROM THE
• Must notbe smaller in size than the outlet pipe size of ONE FURNISHED WITH THE WATER HEATER.
the valve, or have any reducing couplings or other COMPLIANCE WITH SUCH LOCAL REQUIREMENTS MUST BESATISFIED BY
restrictions. THE INSTALLER OREND USER O FTHE WATER H EATER WITH A LOCALLY
PRESCRIBED TEMPERATURE-PRESSURE RELIEF VALVE I NSTALLED INTHE
• MUStnot be plugged or blocked. DESIGNATED OPENING INTHE WATER HEATER.
• Must be of material listedfor hot water distribution.
SEE MANUAL H EADING - "TEMPERATURE-PRESSURE RELIEF VAWES" FOR
• Must be installed so as to allow complete drainage of INSTALLATION ANDMAINTENANCE OFRELIEF VALVE, DISCHARGE LINE
both the temperature-pressurerelief valve, and the dis- AND OTHER SAFETY PRECAUTIONS.
chargepipe.
• Must terminate at an adequate drain.
• Must not have any valve between the relief valve and
tank.
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