Temperature-Pressure Relief Valve - Maytag HX40NARS User Manual

Instructions for Installation (cont'd)
Temperature-Pressure Relief Valve
•,WARNING _,WARNING
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 ally operated at least once a year. Caution should be
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
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 SHUTOFF
of productionof listedequipment or materials. (Z_ VALVE
VALVE
The valve must be marked with a maximum set pressure
not to exceed the marked hydrostaticworking pressureof ___11 ¢,_
the water heater (150 Ibs./sq. in.) and a dischargecapacity HOT COLD
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.)
Your local jurisdictional authority, while mandating the
use of 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 _ TEMPEPJ_TURE-
installed in the designated opening in the water heater in PRESSURE
placeof the factory furnishedvalve. RELIEF V ALVE
For safe operation of the water heater, the relief valve
must not be removed from it's designated opening or
plugged, plug)
The temperature-pressure relief valve must be installed
directly into the fitting of the water heater designated for
the relief valve. Positionthe valve downward and provide
tubing sothat any dischargewill exit only within 6 inches
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
reducedin size under any circumstances. Excessivelength,
over 30 feet, or use of more than four elbows can cause
restrictionand reducethe dischargecapacityof the valve.
No valve or other obstruction isto be placed between the 6" AIRGAP
relief valve and the tank. Do not connecttubing directly to
dischargedrain unlessa 6" air gap is provided.To prevent -- m
bodily injury, hazard to life, or property damage, the relief FLOOR DRAIN
valve must be allowed to discharge water in quantities
should circumstances demand. If the dischargepipe is not
connected to a drain or other suitable means, the water RELIEF VALVE OPENING
L
flow may causeproperty damage.
At the time of manufacture,thiswater heaterwas provided with a combination
The Discharge Pipe:
temperature-pressure reliefvalvelistedascomplying with thestandardforrelief
• Must not be smaller in size than the outlet pipe size of, valves and automatic gas shut-off devices forhotwater
s upply
systems, ANSI
the valve, or have any reducing couplings or other z21.22. For safe operation of thewater
heater,
thereliefvalve must notbe
removedfrom itsdesignated pointof installation or plugged.
restrictions.
Your local urisdictionalauthority, while mandating the use of a temperature-
Must not
be plugged or blocked,
pressure relief valve complying with ANSIZ21.22andASME,may requirea valve
Must be of material listedfor hot water distribution,
model different fromthe onefurnishedwith the water heater.
Must be installed
so as to
allow complete drainage of
Compliancewith suchlocal requirementsmustbe satisfiedby the installeror
end user of the water heater with a locallyprescribedtemperature-pressure
both the temperature-pressure relief valve, and the dis-
relief valve installedin the designated openingin the water heater.
charge pipe.
Seemanual heading-"Temperature-Pressure ReliefValves"for installation and
Must terminate
at an
adequate drain,
maintenance of relief valve,discharge line. and other safetyprecautions.
Must not have any valve between the relief valve and
tank.
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