Raypak 751 manual Electrical Connections - Domestic Hot Water

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.

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

BREAK THE WIRE NUT AT THE

BOILER "TH" CONNECTIONS AND

ATTACH TO THE SINGLE TANKSTAT

PER ILLUSTRATION

Fig. 19: Single Stage Tankstat

"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.

Electrical Connections — Domestic Hot Water

DANGER — SHOCK HAZARD — Make sure electrical power to the heater is disconnected to avoid potential serious injury or damage to components.

CAUTION: When servicing controls, label all wires prior to disconnection. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

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

BREAK THE WIRE NUT AT THE

BOILER "TH" CONNECTIONS AND

ATTACH TO THE DUAL TANKSTAT

PER ILLUSTRATION

Fig. 20: 2-Stage Tankstat

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.

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