42 Installing the Water Heater
3.6 Connecting the Power Supply
WARNING
Improperly connecting the power supply can
result in electrical shock and electrocution.
Follow all applicable electrical codes of the local
authority having jurisdiction. In the absence of
such requirements, follow the latest edition of
the National Electrical Code (NFPA 70) in the
USA
. Connecting the power supply should be
performed only by a licensed professional.
When connecting the power supply, follow these
guidelines:
●
Do not connect the electric supply until all
plumbing and gas piping is complete and the
water heater has been filled with water.
●
Do not connect the water heater to a 220-240 V
AC power supply. Doing so will damage the water
heater and void the warranty.
●
Universal models come with a factory-installed,
3-pronged (grounded) plug. The water heater can
be plugged into any grounded electrical outlet
nearby, as it requires only 2-4 Amps. It is not
necessary to run a dedicated electrical line to the
water heater.
●
Keep power cord free of dust.
●
Do not use a broken or modified power cord.
●
Do not bind, bend or stretch power cords.
●
If local codes require the water heater to be
wired directly, remove and discard the factory-
installed plug. Install a power switch between
the breaker and the water heater to facilitate
end-user maintenance and servicing. Connect
the water heater to a 110-120 V AC at 60 Hz with
a maximum of 2 A (4 A if an external pump is
connected) rating electrical supply.
●
A junction box is provided underneath the water
heater if a direct electrical connection is required.
●
The water heater must be electrically grounded.
If using the power plug, ensure that the electrical
outlet you connect the water heater to is properly
grounded. If wiring the water heater directly to
a power supply, do not attach the ground wire
to either the gas or the water piping as plastic
pipe or dielectric unions may prevent proper
grounding.
Installation
●
For vertical terminations, install a condensate
drain and trap as close to the appliance as
possible.
●
Slope the vent in accordance with the vent
manufacturer’s installation instructions.
●
Use only corrosion resistant materials for the
condensate drain lines, such as PVC pipe or plastic
hose.
●
The condensate drain pipe (along its entire
length) must be at least the same diameter as the
drain line (5/8 inch).
●
The end of the condensate drain pipe should be
open. The end should not be under water or any
other substances.
●
To help prevent the condensate from freezing,
run the condensate drain line through an interior
wall or between insulation and an interior wall.
●
The condensate collector should be used for
all combination domestic/hydronic heating
applications.
Guidelines
●
Do not allow condensate to enter the water
heater.
●
Do not connect the condensate drain pipe
directly to the storm sewer.
●
Do not connect the condensate drain line with
the evaporator coil drain of an air conditioner.
●
Do not connect the condensate drain line to the
pressure relief valve or the line of the appliance.
●
Use only venting that is approved and identified
as acceptable for your particular model.
