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5. 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.
A
WARNING: These heaters are factory-wired for
240 VAC, 1 Ph, 60 Hz power supply. DO NOT attempt to
operate at 208 VAC.
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 better
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" diameter holes not utilized on jacket and
control box can be used for fireman switch, auxiliary
control interface or power vent (D-2) wiring.
20
APPROVED
Electrical Power Draw
A
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: Failure to ground the heater electrically could
affect the heater's electronics.
NOTE: See "Time Clock/Fireman's Switch" on page
29 for further instructions if using a time clock/
fireman's switch.
The Electronic Intermittent Ignition Device automatically
lights the pilot and main burners upon a call for heat. The
heater is supplied with a dual-voltage transformer for 120
VAC or 240 VAC input power hookup.
When operating on 120 VAC power, units draw 4 amps.
When operating on 240 VAC power, units draw 2 amps.
BONDING LUG
(OPTIONAL
LOCATION)
Figure 24. Heater Wiring Locations
UNCONTROLLED DOCUMENT IF PRINTED
CAUTION: Heater must be electrically grounded and
OPTION LOCATION
LEFT SIDE FIELD WIRING
CONTROL BOX
(FACTORY MOUNTED
LOCATION)
SWAY BRACE
BONDING LUG
(STANDARD
LOCATION)
F10650-2
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