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Chapter 4. – Installation
4-7. Electrical Wiring
Do not connect electrical power to the unit until all electrical wiring has been completed.
This appliance must be electrically grounded in accordance with local codes, or in the absence of lo-
cal codes, with the National Electrical Code, ANSI/NFPA 70. In Canada, the latest CSA C22.1 Electrical
Code.
Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause
improper and dangerous operation.
Verify proper operation after servicing.
Field wiring to be performed at time of appliance installation.
WARNING
Electrical Shock Hazard
Do not turn power on until electrical wiring is finished. Disconnect power before servicing.
Failure to do so may result in death or serious injury from electrical shock
• The electrical supply required by the water heater is 120VAC at 60 Hz. The power consumption may be up to 172W.
Use an appropriate circuit.
• Do not disconnect the power supply when not in use. When the power is off, the freeze prevention in the water
heater will not activate, resulting in possible freezing damage.
• The electrical supply must be connected by designated power circuit.
• Do not let the power cord contact the gas piping.
Tie the redundant power cord outside the water heater. Putting the redundant length of cord inside the
water heater may cause electrical interference and faulty operation.
Ground
• To prevent electrical shock, provide a ground with resistance less than 100Ω . An electrician should do this work.
Do not connect the ground to the city water or gas piping. Do not tie the ground to a telephone line.
Breaker Installation
• Mount a device which shuts off the electrical path automatically (leakage breaker) when electrical leakage is
detected.
CAUTION
Electrostatic discharge can affect electronic components. Take precautions to prevent electrostatic discharges
from personnel or hand tools during the water heater installation and servicing to protect product's electronic
control.
CAUTION
Do not disconnect the electric power, gas and inlet water supply when not in use. If any of these item are
not properly connected freezing damage may occur. In this case, please drain all of water in the unit includ-
ing condensate trap and unplug the unit.
30
Do not connect electrical power to the unit until all electrical wiring has
been completed.
Electrical Wiring
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