9
7. Electrical Requirements and Precautions
Manufacturer recommends that this product be installed in accordance with all applicable national,
state, provincial, and local electrical codes. Consult a qualied and licensed electrician if you have
questions or are unsure about anything relating to codes for this product. The heater must be
connected to a dedicated circuit breaker on the main electrical panel.
WARNING: As with all electrical appliances, it’s crucial to rst shut o all power to the unit
directly at the fuse or breaker box before attempting to install, repair or disassemble this
water heater. Ensure that the breaker is shut o. SERIOUS BODILY INJURY OR DEATH
COULD OCCUR IF YOU IGNORE THIS WARNING.
CAUTION: All wiring (wire gauge), as well as circuit protection (breaker), must comply with
the U.S. National Electrical Code (NEC) in the USA or the Canadian Electrical Code (CEC)
in Canada. Failure to do so could lead to property damage, personal injury, and void your
warranty.
Note: The Canadian Electrical Code generally requires that all supply wires and corresponding
circuit protection used for domestic hot water heating and hydronic heating applications be
sized to a minimum of 125% of the maximum current rating of the heater (check heater
specication details below)
Before installing this tankless water heater, ensure that sucient electrical power is available
in the home to handle the maximum amperage load of the applicable heater
.
IMPORTANT NOTES:
18kW 24kW and 27kW heater requires 3 set of wire and ground (see wiring diagram on page 11)
• Please see electrical specications by heater input and wiring diagram on the page 11 for
additional electrical information.
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