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ELECTRICAL CONNECTIONS - DOMESTIC HOT WATER
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after servicing.
DANGER - SHOCK HAZARD
Make sure electrical power to the heater is disconnected to avoid potential serious injury or damage to components.
The boiler is normally wired for 120 volts. The voltage is indicated on the tie-in leads. Consult the wiring diagram
shipped with the boiler in the instruction packet. The "TH" leads are for the remote tank control through the boiler
transformer. DO NOT attach line voltage to the "TH" leads. Before starting boiler check to insure proper voltage to
boiler and pump.
BREAK THE WIRE NUT AT THE
BOILER "TH" CONNECTIONS AND
ATTACH TO THE SINGLE TANKSTAT
PER ILLUSTRATION
SINGLE
STAGE
TANKSTAT
Boiler must be electrically grounded in accordance with National Electrical Code ANSI/NFPA No. 70, and CSA C22.1
C.E.C. Part 1 in Canada.
2-STAGE
TANKSTAT
BREAK THE WIRE NUT AT THE
BOILER "TH" CONNECTIONS AND
ATTACH TO THE DUAL TANKSTAT
PER ILLUSTRATION
NOTES:
1. Field installed ground to inside of junction box.
2. If any of the original wire as supplied with the boiler must be replaced, it must be replaced with 105°C wire or its
equivalent.