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ATMOSPHERIC
Wiring locations
LOW NOx
Wiring locations
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.
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
The standard field-wiring connection is on the right
side of the heater.
To wire the heater from the left side, follow these
steps :
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
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.
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.
NOTE:
Heaters are factory-wired for 240 VAC power supply.
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.
OPTION LOCATION
LEFT SIDE FIELD WIRING
CONTROL BOX
(FACTORY MOUNTED
LOCATION)
BONDING LUG
(OPTIONAL
LOCATION)
BONDING LUG
(STANDARD
LOCATION)
SWAY BRACE
OPTION LOCATION
LEFT SIDE FIELD WIRING
CONTROL BOX
(FACTORY MOUNTED
LOCATION)
BONDING LUG
(OPTIONAL
LOCATION)
BONDING LUG
(STANDARD
LOCATION)
SWAY BRACE