Use And Care Manual

7
Typical Installation
Recommended
heat trap
6″ minimum
6″ air gap
Hot water outlet
to fixtures
Temperature &
pressure relief
valve
To cold water
supply
Shut-off valve
Relief
valve
discharge line
to suitable
open
drain
Union
Anode
Jacket
access
panel
(use only copper
conductors)
Opening
for 1/2″
or 3/4″
electrical
fitting
Auxiliary catch pan
* The drain valve is located below and to the right of jacket access panel and is
not visible in this view.
Unions
Temperature &
pressure relief
valve
Cold water supply
Shut-off valve
Relief
valve
discharge
line
6″
Power supply
cord 2
1
/2 gal.
models only
Drain valve*
Jacket access
panel
Hot water
outlet
(to fixtures)
Auxiliary
catch pan
Auxiliary catch
pan drain line
Suitable open drain
WARNING: 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.
Relief Valve
The Btuh rating of the relief valve must
not be less than the input rating of the
water heater as indicated on the rating
label located on the front of the heater
(1 watt=3.412 Btuh).
Connect the outlet of the relief valve to a
suitable open drain so that the discharge
water cannot contact live electrical parts or
persons and 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.
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 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.
Auxiliary catch pan drain
line
Suitable open drain
Drain valve
(not supplied)
To Fill the 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.
Make certain the drain valve is completely
closed.
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.
Vacuum Relief Va lve
(Not Supplied)
If required, install per local codes
and valve manufacturer’s
instructions.