Temperature-Pressure Relief Valve - Maytag Nine HN4930T User Manual

Instructions for Installation (cont'd)
Temperature-Pressure Relief Valve
AWARNING 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 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 va ved scharge ne, and (2) the water manua y d s-
Relief Valves and Automatic Gas Shutoff Devices for Hot
ged will not cause any bodily injury or property
Water Supply Systems, and the latest edition of ANSI age because the water may be extremely hot.
Z21.22 and the code requirements of ASME. If replaced, Ier 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 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 inspecton SHUTOFF
I of productionof listed equipment or materials.
_ VALVE VALVE
The valve must be marked with a maximum set pressure
not to exceedthe marked hydrostaticworking pressureof _---_-'-_ __ _
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 f
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
installed in the designatedopening in the water heater in PRESSURE
placeof the factoryfurnishedvalve. RELIEF V ALVE
For safe operation of the water heater, the relief valve
must not be removed from it's designated opening or
plugged. _g)
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 I
tubing sothat any dischargewill exit only within 6 inchesI
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. 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 obstructionis to be placedbetween the 6"AIRGAP
relief valve and the tank. Do not connect tubing directlyto
B
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
flow may causeproperty damage. Atthetime ofmanufacture, this water heater was provided with a combination
The DischargePipe: temperature-pressure relief valve l isted a s complying with thestandard forrelief
• Must notbe smaller in size than the outlet pipe size of valves a nd a_oma_.ic gas shut-off devices for hotwater
supp}y
systems, AnSI
the valve, or have any reducing couplings or other z21.22. Forsafe operation ofthewater heater, therelief v alve m ust n otbe
removed from its designated point ofinstallation orplugged.
restrictions. Your l ocal u risdictional authority, while mandating theuse of a temperature-
. Must not be plugged or blocked, pressure relief v alve c omplying with Ansi Z 21.22 and ASME, may require avalve
• Must be of material listed for hot water distribution, model different from the one furnished with thewater heater.
• Must be installed so as to allow complete drainage of Compliance with such local r equirements must b esatisfied bytheinstaller or
enduser o fthewater heater witha locally prescribed temperature-pressure
both the temperature-pressure relief valve, and the dis- relief valve i nstalled inthedesignated opening inthewater heater.
charge pipe. See manual heading -"Temperature-Pressure Relief Valves" forinstallation and
• Must terminate at an adequate drain, maintenance ofrelief valve, discharge line, and other safety precautions.
• Must not have any valve between the relief valve and
tank.
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