Kenmore POWER MISER 153.330751 - Manual (Page 12)

Installation Instructions (cont’d)
Temperature-Pressure Relief Valve
A WARNING
At the time of manufacture this water heater was provided
with a combination temperature-pressures relief valve certified
by a nationally recognized testing laboratory that maintains
periodic inspection of production of listed equipment or mate­
rials, as meeting the requirements for Relief Valves and
Automatic Gas Shutoff Devices for Hot Water Supply Systems,
and the latest edition of ANSI Z21.22 and the code require­
ments of ASME. If replaced, the valve must meet the require­
ments of local codes, but not less than a combination tempera­
ture and pressure relief valve certified as meeting the require­
ments for Relief Valves and Automatic Gas Shutoff Devices for
Hot Water Supply Systems, ANSI Z2I.22 by a nationally recog­
nized testing laboratory that maintains periodic inspection of
production of listed equipment or materi^s.
The valve must be marlced with a maximum set pressure not
to exceed the marked hydrostatic working pressure of the
water heater {150 Ibsisq. in.) and a discharge capacity not less
than 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-pressure relief valve complying with ANSI Z2I.22
and ASME, may require a valve model different from the one
furnished with the water heater.
Compliance with such local requirements must be satisfied by
the installer or end user of the water heater with a locally pre­
scribed temperature-pressure relief valve installed in the desig­
nated opening in the water heater in place of the factory fur­
nished râlve.
For safe operation of the water heater, the relief valve must not
be removed from It’s designated opening or plugged.
The temperature-pressure relief valve must be installed directly
into the fitting of the water heater designated for the relief valve.
Position the valve downward and provide tubing so that any dis­
charge will exit only within 6 inches above, or at any distance
below the structuré 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. Excessive
length, over 30 feet, or use of more than four elbows can cause
restriction and reduce the discharge capacity 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 discharge
drain unless a 6" air gap is provided. To prevent bodily injury, haz­
ard to life, or property damage, the relief valve must be allowed
to discharge water in quantities should circumstances demand. If
the discharge pipe is not connected to a drain or other suitable
means, the water flow may cause property damage.
The Discharge Pipe:
• Must not be smaller in size than the outlet pipe size of the
valve, or have any reducing couplings or other restrictions.
■ Must not be plugged or blocked.
• Must be of material listed for hot water distribution.
• Must be installed so as to allow complete drainage of both
the temperature-pressure relief valve, and the discharge
pipe.
• Must terminate at an adequate drain.
• Must not have any valve between the relief valve and tank.
AWARNiNG
The temperature-pressure relief valve must be manually
operated at least once a year. Caution should be taken to
ensure that (I) no one is in front of or around the outlet of
tile temperature-pressure relief valve discharge line, and (2)
the water manually discharged will not cause any bodily
injury or property damage because the water may be
extremely hot
If after manually operating the valve, it foils to completely
reset and continues to release water, immediately close the
cold water inlet to the water heater, follow the draining
instructions, and replace the temperature-pressure relief
valve with a new one.
RELIEF VALVE OPENING
At the time of manufacture, this water heater was provided with a combination tem­
perature-pressure relief valve listed as complying with the standard for relief valves
and automatic gas shut-off devices for hot water supply systems, ANSI Z21.22. For
safe operation of the water heater, the relief vabe must not be removed from its des­
ignated point of installation or plugged.
Your local jurisdictional authority, while mandating the use of a temperature-pressure
relief vabe complying with ANSI Z2I.22 and ASME, may require a vabe model differ­
ent from the one furnished with the water heater.
Compliance with such local requirements 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.
See manual heading -“Temperature-Pressure Relief Vabes" for installation and mainte­
nance of relief valve, discharge line, and other safety precautions.
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