MrCool MHWH199NC U Series, Руководство по установке

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WARNING
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18
Connecting the Power Supply
The products referred to in this manual utilize an external electrical source. When installed, the
unit must be electrically grounded in accordance with local codes or, in the absence of local
codes, with the National Electrical Code, ANSI/NFPA 70, and/or the CSA C22.1, Canadian Electrical
Code, Part 1.
Improperly connecting the power supply could result in personal injury, electrical shock,
and/or death!
Label all wires before disconnecting them when you work on the controls. Wiring errors can
cause improper and dangerous operation. Verify proper operation after servicing.
When connecting the power supply, follow these guidelines:
DO NOT
connect the electrical 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 this will damage the
water heater and void the warranty.
DO NOT
run a dedicated electrical line to the water heater. All water heaters come with a
3-pronged (grounded) plug. The water heater can be plugged into any grounded electrical
outlet nearby to the installation location, as the unit only requires 2-4 Amps to operate.
DO NOT
use a broken or modified power cord.
DO NOT
bind, bend, or stretch power cords.
Keep power cord free of dust.
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 any end-user maintenance and servicing. Connect the water heater to a 110-120V
AC, 60 Hz rated electrical supply that has a maximum of 2 Amps (4 Amps if an external pump
is connected).
The water heater must be electrically grounded. If using the power plug, ensure the electrical
outlet that the water heater will be connected to is properly grounded. If wiring the water
heater directly to a power supply, DO NOT attach the ground wire to the gas or water piping,
as plastic piping or dielectric unions could prevent proper grounding.
It is recommended to use a surge protector to protect the water heater from power surges.
If there is a power failure in cold weather areas, the freeze protection system in the water
heater will not operate and could result in freezing of the heat exchanger. In cold weather
areas, where power failures are common, the water heater must be completely drained to
prevent damage if the power will be off for an extended period of time. A battery back-up,
which is available at most computer retailers, can be used to supply hot water during power
outages. Damage caused be freezing temperatures due to a power loss is NOT covered by the
warranty.
If the water heater will not be used for an extended period of time, follow these steps:
1. Completely drain the water out of the water heater.
2. Disconnect the power supply to the water heater. This will prevent the water heater from
freezing and becoming damaged.
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