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Electrical Supply
WARNING
Electrical Shock Hazard
• Disconnect
servicing.
• Replace all parts and panels
before operating.
• Failure to do so can result in
electrical shock.
24 Volt Control precautions
(Applies to Honeywell control equipped heaters only).
Important: The electrical controls used inside the gas con-
trol/thermostat of this water heater are polarity sensitive.
Ensure the electrical supply is connected correctly in the
receptacle box. Failure to connect correctly will prevent the
unit from functioning properly (see Figure 17). Before per-
forming any electrical service work, label all wires to avoid
connection errors. If wiring has to be replaced, use only
TYPE SPT-1 wire, (except igniter wires). If there is a prob-
lem with igniter wires, replace igniter assembly in its entire-
ty. In locations where a sump pump failure, flooding or expo-
sure to water may be present, a ground fault receptacle is
recommended.
Important: Do not use an extension cord to connect the
water heater to an electrical outlet.
•
Ensure that the water heater and the outlet are proper-
ly grounded. Failure to properly ground the heater can
prevent the unit from operating.
•
Ensure that the water heater is installed in accordance
with prevailing provisions of local codes and the latest
edition of "Canadian Electrical Code (CAN/CSA
C22.1), Part I" (Canada) or "National Electrical
Code" (NFPA 70) (U.S.A.).
Before applying power to the water heater, always make
sure:
•
The voltage and frequency correspond to that specified
on the water heater wiring diagram.
•
The electrical circuit has the proper overload fuse or
breaker protection.
•
Fill the tank with water and check all connections for
leaks. Open the nearest hot-water faucet and let it run
for 3 minutes to purge the water lines of air and sedi-
ment and to ensure complete filling of the tank. The
electrical power may then be turned on. Verify proper
operation after servicing.
Note: Always reference the wiring diagram for the correct
electrical connections.
The maximum wire length from transformer to the water
heater is 15.2m (50 ft.) of Type SPT-1 or equivalent.
WARNING
When the unit is plugged in, 24VAC is pres-
ent at the electric connections of the gas
control/thermostat.
power
before
– 14 –
Figure 17 Wiring Diagram - Honeywell (24 Volt)
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