Lochinvar 151-286 Field wiring, Installation must comply with, Line voltage connections

Outdoor Knight Boiler Installation & Operation Manual

5 Field wiring

￿WARNING

NOTICE

NOTICE

ELECTRICAL SHOCK HAZARD – For your safety, turn off electrical power supply before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death.

Wiring must be N.E.C. Class 1.

If original wiring as supplied with boiler must be replaced, use only type 105°C wire or equivalent.

Boiler must be electrically grounded as required by National Electrical Code ANSI/ NFPA 70 – latest edition.

All wiring exterior to the appliance must be enclosed in approved conduit.

In accordance with Section 303 of the 2007 Energy Act, this boiler is equipped with a feature that saves energy by reducing the boiler water temperature as the heating load decreases. This feature is equipped with an override, which is provided primarily to permit the use of an external energy management system that serves the same function. This override MUST NOT be used unless at least one of the following conditions is true:

1.An external energy management system is installed that reduces the boiler water temperature as the heating load decreases.

2.This boiler is not used for any space heating.

3.This boiler is part of a modular or multiple boiler system having a total input of 300,000 Btu/hr or greater.

4.This boiler is equipped with a tankless coil.

￿CAUTION Label all wires prior to disconnection when servicing controls. Wiring errors

can cause improper and dangerous operation.

Installation must comply with:

1.National Electrical Code and any other national, state, provincial, or local codes, or regulations.

Line voltage connections

1.Connect 120 vac power wiring to the line voltage terminal strip in the junction box, as shown in FIG. 5-1.

2.Provide and install a fused disconnect or service switch (15 amp recommended) as required by the code (see FIG. 5-1).

3.The boiler pump is shipped loose. Wire the boiler pump as shown in FIG. 5-1.

4.When connecting a domestic hot water (DHW) pump, connect the wiring to the line voltage terminal strip as shown in FIG. 5-1.

5.To activate a system pump, wire as shown in FIG. 5-1. If the motor is larger than 1/8 hp or 1.8 amps, you must isolate with a relay.

Low voltage connections

1.Route all low voltage wires through the knockouts in the rear of the boiler, as shown in FIG. 5-2.

2.Connect low voltage wiring to low voltage connection board as shown in FIG. 5-3 on page 31 of this manual and the boiler wiring diagram.

Figure 5-2Routing Field Wiring

Figure 5-1Line Voltage Field Wiring Connections

LOW VOLTAGE

CONNECTION

BOARD

LOW VOLTAGE

WIRING

KNOCKOUTS

LINE VOLTAGE	IMG00386
WIRING KNOCKOUTS

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