Electrical Wiring, Millivolt Models, Digital Models

ELECTRICAL WIRING

NOTE: If it is necessary to replace any of the original wiring, use 105°C wire or its equivalent, and/or 150°C wire or its equivalent, like the original wiring.

	OPTION LOCATION	CONTROL BOX
		(FACTORY MOUNTED
	LEFT SIDE FIELD WIRING
		LOCATION)

MILLIVOLT MODELS

The Millivolt models are equipped with a self-generat- ing electrical system in which the electrical current is provided by a pilot generator. No external electrical connections are required.

When installing a remote switch, do not exceed 10 ft of wiring from the heater. Use 18-gauge stranded wire.

DIGITAL MODELS

NOTE:

Heaters are factory-wired for 240 VAC power supply.

The standard field-wiring connection is on the right side of the heater.

To wire the heater from the left side, follow these steps :

BONDING LUG (OPTIONAL LOCATION)

ATMOSPHERIC

Wiring locations

SWAY BRACE

BONDING LUG (STANDARD LOCATION)

1.	Remove the two (2) screws that hold the front door
	to the heater. Remove and set aside door for bet-
	ter access to wiring.
2.	Remove the four (4) screws that hold down the
	junction box to the sway brace.
3.	Remove the transformer cover located on the far
	right by removing one (1) screw.
4.	Remove the two (2) screws that hold down the
	transformer.
5.	Remove the one (1) screw that holds down the
	ground wires.
6.	Disconnect P6 connector from PC board.
7.	Remove transformer from its current location and
	relocate it on the far left side of the heater.
8.	Re-route all high-voltage wires and ground wires

OPTION LOCATION

CONTROL BOX

(FACTORY MOUNTED

LEFT SIDE FIELD WIRING

LOCATION)

through the left jacket side of heater.

9. Re-install P6 connector, ground wires (SPG),

transformer, junction box, front door, and plug right

side with the left side’s grommet plug.

NOTE: 7/8" dia. holes not utilized on jacket and control box can be used for fireman switch, auxiliary control interface or power vent (D-2) wiring.

BONDING LUG (OPTIONAL LOCATION)

SWAY BRACE

BONDING LUG (STANDARD LOCATION)

LOW NOx

Wiring locations

NOTE: Heater must be electrically grounded and bonded. Bonding lug is provided loose with the heater. Install bonding lug on lower right or left side of jacket as necessary for bonding the heater. Mounting hole is provided on the jacket.

The Electronic Intermittent Ignition Device automati- cally lights the pilot and main burners upon a call for heat. The heater is supplied with a dual-voltage trans- former for 120 VAC or 240 VAC input power hookup.