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INSTALLATION
Figure 10 -
Draining the old water heater.
Also open a hot water faucet
9
to help the water in the tank
drain faster.
When the tank is empty,
10
disconnect the Temperature
& Pressure (T&P) Relief Valve
discharge pipe. You may be able to
reuse the discharge pipe, but do not
reuse the old T&P Relief Valve. A new
T&P Relief Valve comes installed on
your water heater (or on some
models, is in the carton with the
water heater).
Figure 11 -
Removing the T&P Relief Valve
discharge pipe.
Disconnect the water pipes.
11
Many water pipes are
connected by a threaded
union which can be disconnected with
wrenches. If you must cut the water
pipes, cut the pipes close to the water
heater's inlet and outlet connections,
leaving the water pipes as long as
14 • Commercial Electric Water Heater Use and Care Guide
possible. If necessary, you can make
them shorter later when you install
the new water heater.
12
Remove the old water heater.
WARNING! Use two or more
people to remove or install water
heater. Failure to do so can result in
back or other injury.
Step 4:
Installing the new
water heater
Completely read all
1
instructions before beginning.
If you are not sure if you can
complete the installation, seek
assistance from any of the following
sources:
• Schedule an appointment with
a qualified person to install your
water heater.
• Call our Technical Assistance Hotline
at 1-888-479-8324.
Install a suitable drain pan
2
that is piped to an adequate
drain.
Set the water heater in place
3
taking care not to damage
the drain pan.
NOTICE: Most codes require setting
the water heater in a suitable drain
pan piped to an adequate drain.
The drain pan helps avoid property
damage which may occur from
condensation or leaks in the piping
connections or tank. The drain pan
must be at least two inches (51 mm)
wider than the diameter of the water
heater. Install the drain pan so the
water level is limited to a maximum
depth of 1-3/4" (44 mm).
Verify that the water heater
4
is properly set in place. Check
that:
• The T&P Relief Valve will not be in
contact with any electrical parts.
• There is adequate space to install
the T&P Relief Valve discharge
pipe and that it can be piped to a
separate drain (and not into the
drain pan, unless otherwise allowed
by provincial or local codes).
• There is adequate access and space
around the water heater for future
maintenance.
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