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DO NOT CONNECT ELECTRICAL
WIRING UNTIL YOU ARE
INSTRUCTED TO DO SO.
NOTICE: Connecting electrical power
to the tank before it is completely
full of water (water must run FULL
STREAM from a hot water tap for a full
three minutes) will cause the upper
heating element to burn out.
Step 5:
Connect the
Temperature and
Pressure (T&P) Relief
Valve/Pipe
Most T&P Relief Valves are pre-installed
at the factory. In some cases, they are
shipped in the carton and must be
installed in the opening marked and
provided for this purpose and according
to local/provincial codes.
WARNING! To avoid serious injury
or death from explosion, install a T&P
Relief Valve according to the following
instructions:
If your water heater does not
1
have a factory installed T&P
Relief Valve, install the new
T&P Relief Valve that came with your
water heater. Do not reuse an old T&P
Relief Valve. Install a T&P Relief Valve
discharge pipe according to local codes
and the following guidelines:
• The discharge pipe should be at least
3/4" (19 mm) inside diameter and
sloped for proper drainage. Install
it to allow complete drainage of
both the T&P Relief Valve and the
discharge pipe.
• The discharge pipe must withstand
250°F (121°C) without distortion. Use
only PEX, copper or CPVC pipe. Do
not use any other type of pipe, such
as PVC, iron, flexible plastic pipe, or
any type of hose.
Figure 12 -
The T&P Relief Valve discharge
pipe must be installed properly and piped to an
adequate drain.
• Terminate the discharge pipe a
maximum of 12 inches (305 mm)
above a floor drain or outside the
building. Do not drain the discharge
pipe into the drain pan; instead
pipe it separately to an adequate
drain. In cold climates, terminate the
discharge pipe inside the building to
an adequate drain. Outside drains
could freeze and obstruct the drain
line. Protect the drain from freezing.
DISCHARGE
PIPE
Figure 13 -
The end of the T&P Relief Valve
discharge pipe must be no more than 12 inches
(305 mm) above a floor drain or terminate
outside the building.
Commercial Electric Water Heater Use and Care Guide • 15
• Do not place any valve or other
restriction between the tank and
T&P Relief Valve. Do not cap, block,
plug, or insert any valve between
the T&P Relief Valve and the end of
the discharge pipe. Do not insert or
install any reducer in the discharge
pipe.
DRAIN
PIPE
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