"TH" leads. Before starting the boiler, ensure that there
is proper voltage to the boiler and pump.
The 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.
Notes:
1. Field installed ground to inside of junction box.
2. If any of the original wire as supplied with the boil-
er must be replaced, it must be replaced with
105°C wire or its equivalent.
24
4. Provide an external surge suppressor capable of
maintaining system integrity.
5. Provide overload protection and a disconnect
means for equipment serviceability as required by
local and state code.
6. Install boiler controls, thermostats, or building
management systems in accordance with the
applicable manufacturer’s instructions.
7. Conduit should not be used as the ground. There
must be a solid wired ground.
Electrical Connections — Domestic
Hot Water
The ADB is wired for 120 VAC. The voltage is indicat-
ed 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
NOTE: A grounding electrode conductor shall be
used to connect the equipment grounding
conductors, the equipment enclosures, and the
grounded service conductor to the grounding
electrode.
Fig. 18: Field Wiring Connections
CAUTION: When servicing controls, label all wires
prior to disconnection. 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.
