HP 422690 I manual Installing Electrical Wiring, Volt Wiring

WARNING: When test pressure is above 1/2 psi (14 inches W.C.), completely disconnect furnace and gas control from gas supply line. Failure to isolate furnace and gas control from test pressure could damage them, causing gas to leak, resulting in fire or explosion.

Use a commercial soap solution made to detect leaks and check all gas piping connections. Bubbles indicate gas leakage. Seal all leaks before proceeding.

SECTION 7. INSTALLING

ELECTRICAL WIRING

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. When replacing original wire, use same type, color, or equivalent wire. Remember to renumber wire ends. Verify proper operation after servicing.

115 VOLT WIRING

Wire furnace according to the Field Wiring Diagram shown in Figure 14, local codes, and current National Electrical Code ANSI/NFPA 70 or Canadian Electrical Code CSA C22.1. Also, see Furnace Wiring Diagram in Figure 15.

Install proper electrical grounding by attaching grounding source to green wire in furnace junction box. Follow local codes or in the absence of local codes, the current National Electrical Code ANSI/NFPA 70 or Canadian Electrical Code CSA C22.1.

WARNING: Failure to provide a proper electrical ground could result in electric shock or fire.

Provide furnace with its own separate electrical circuit and means of circuit protection. Furnace must have an electrical disconnect switch located at furnace.

WARNING: Failure to provide the above shut-off means could result in electrical shock or fire.

Use electrical wiring that meets current National Electrical Code ANSI/NFPA 70 or Canadian Electrical Code CSA C22.1 and local codes. Use Type T (63 degrees C rise) wire or equivalent.

Figure 14. Field Wiring Diagram.

24 VOLT WIRING

Select a location for room thermostat on a draft-free interior wall that is away from supply and return air registers, lights, television, direct sunlight, or other heat sources.

Install thermostat following field-wiring diagram in Figure 14 and thermostat manufacturer's instructions. Thermostat wire should be 18 AWG wire for best results.

NOTE: For proper cooling operation, “Y” wire must be connected to Fan Timer. “Y” wire controls cooling speed blower operation.

Set the thermostat's heat anticipator following instructions provided with thermostat. This furnace will have heat anticipator current of approximately 0.4 amps.

CAUTION: 24 VAC accessories that draw power from the furnace's transformer should not be installed on this furnace. Addition of such accessories may cause improper furnace operation and limit transformer life.

Installer’s Information Manual Page 15