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Customer Service Troubleshooting Tips Care and Cleaning Operating Instructions Installation Instructions Safety Instructions
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, must be installed 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 drain valve is closed,
then open the shut-off valve in the cold
water supply line.
Open a nearby hot water faucet(s)
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, and
the water may also be seen beneath the
water heater.
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.
Draining the Condensate
In certain conditions, installations in
unconditioned space or having long
horizontal or vertical runs may
accumulate condensate. In order to
prevent condensate from draining back
into the blower, we recommend a
condensate tee and drain to be installed
in a horizontal vent section as close as
practical to the blower vent connection.
Condensate is known to be acidic; refer
to local, state or federal codes for
proper handling methods.
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