Instructions / Assembly

10
Installing the water heater
A new combination temperature and pressure relief valve, complying with the Standard for Relief Valves
and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22, is supplied and must
remain in the opening provided and marked for the purpose on the water heater. No valve of any type
should be installed between the relief valve and the tank. Local codes shall govern the installation of relief
valves.
Relief Valve
The pressure rating of the relief
valve must not exceed 150 PSI, the
maximum working pressure of the
water heater as marked on the rating
plate.
The Btuh rating of the relief valve
must equal or exceed the Btuh input of
the water heater as marked on its rating
plate.
Position the outlet of the relief
valve above a suitable open drain to
eliminate potential water damage.
Piping used should be of a type
approved for hot water distribution.
The discharge line must be no smaller
than the outlet of the valve and must
pitch downward from the valve to
allow complete drainage (by gravity)
of the relief valve and discharge line.
The end of the discharge line should
not be threaded or concealed and
should be protected from freezing.
No valve of any type, restriction, or
reducer coupling should be installed in
the discharge line.
To Fill the Water Heater
Make certain that the drain valve is
closed, then open the shut-off valve in
the cold water supply line.
Open each hot water faucet slowly to
allow the air to vent from the water
heater and piping.
A steady flow of water from the hot
water faucet(s) indicates a full water
heater.
WARNING: The tank
must be full of water before
heater is turned on. The
water heater warranty does
not cover damage or failure
resulting from operation
with an empty or partially
empty tank.
Condensation
Condensation can form on the tank
when it is first filled with water.
Condensation might also occur with
a heavy water draw and very cold
inlet water temperatures.
Drops of water falling on the burner
can produce a sizzling or pinging
sound.
This condition is not unusual, and will
disappear after the water becomes
heated. If, however, the condensation
continues, examine the piping and
fittings for possible leaks.