Adams Condensing Oil-Fired Furnace Iwarning, Icaution, Vii. Electrical Connections

VII. ELECTRICAL CONNECTIONS

IWARNING

HIGH VOLTAGEI

To avoid the risk of electrical shock, wiring to the unit must be polarized and grounded.

!WARNING

HIGH VOLTAGEI

To avoid personal Injury or death due to electrical shock, disconneCt electrical power before servicing or changing any electrical wiring.

ICAUTION

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

Wiring Harness

The wiring harness is an integral part of this furnace. Field alteration to comply with electrical codes should not be required. Wires are color-coded for identification purposes. Refer to the wiring diagram for wire routings. If any of the original wire as supplied with the furnace must be replaced, it must be replaced with wiring material having a temperature rating of at least 105 degrees C. Any replacement wiring must be copper conductor.

115 Volt Line Connections

Before proceeding with electrical connections, ensure that the supply voltage, frequency, and phase correspond to that specified on the unit rating plate. Power supply to the furnace must be N.E.C. Class 1, and must comply with all applicable codes. and/or The Canadian Electric Code CSAC22.1.

Use a separate fused branch electrical circuit containing properly sized wire, minimum 12 gauge, and fuse or circuit breaker.

The furnace must be electrically grounded in accordance with local codes or, in their absence, with the latest edition of:

The National Electric Code, ANSI NFPA 70. The fuse or circuit breaker must be sized in accordance with the maximum over-current protection specified on the unit rating plate. An electrical disconnect must be provided at the furnace location.

NOTE: Line polarity must be observed when making field connections.

IWARNING

THE DRAIN TRAP MUST VBE MOUNTED ON THE OPPOSITE SIDE OF THE UNIT FROM THE JUNCTION BOX. THIS WILL REDUCE THE RISK OF WATER REACHING THE JUNCTION BOX IN THE EVENT OF A BLOCKED DRAIN CONDITION.

Connect hot, neutral, and ground wires as shown in the wiring diagram located on the unit's blower door. Line polarity must be observed when making field connections. Line voltage connections can be made through either the right or left side panel. The furnace is shipped configured for a right side electrical connection with the junction box located inside the blower compartment. To make electrical connections through the opposite side of the furnace, the junction box must be relocated to the other side of the blower compartment prior to making electrical connections.

NOTE: Wire routing must not interfere with circulator blower operation, filter removal, or routine maintenance.

IWARNING

EDGES OF SHEET METAL HOLES MAY BE SHARP. USE GLOVES AS A PRECAUTION WHEN REMOVING HOLE PLUGS.

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