Connecting The Power Supply - Vesta VH-150 Installation Manual

Connecting the Power Supply

Improperly connecting the power supply can result in
electrical shock and electrocution. Follow all applicable
electrical codes of the local authority having jurisdiction. In
Warning
the absence of such requirements, follow the latest edition of
the National Electrical Code (NFPA 70) in the USA or the latest
edition of CSA C22.1 Canadian Electrical Code Part 1 in Canada.
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 220-240V AC power
supply. Doing so will damage the water heater and void the
warranty.
•
All water heaters 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.
• 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 110-120V AC at 60 Hz with a maximum of 5A rating
electrical supply.
•
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.
•
We recommend using a surge protector to protect the water
heater from power surges.
•
If there is a power failure in cold weather areas, the freeze
prevention system in the water heater will not operate and may
result in freezing of the heat exchanger. In cold weather areas
where power failures are common, you must completely drain
the water heater to prevent damage if the power is expected
to be off for any extended period of time. A battery back-up
(available at most computer retailers) may be used to supply
hot water during periods of power outages. Damage caused by
freezing is not covered under warranty.
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Connecting the Power Supply