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HIGH VOLTAGE !
T
O AVOID THE RISK OF INJURY
,
DEATH
THE FURNACE MUST BE ELECTRICALLY
GROUNDED IN ACCORDANCE WITH LOCAL CODES OR IN
,
THEIR ABSENCE
WITH THE LATEST EDITION OF THE
N
E
C
.
ATIONAL
LECTRIC
ODE
Wiring Harness
The wiring harness is an integral part of this furnace. Field
alteration to comply with electrical codes should not be re-
quired. 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° C. Any replacement wiring must be a
copper conductor.
115 Volt Line Connections
Before proceeding with electrical connections, ensure that the
supply voltage, frequency, and phase correspond to that spec-
ified on the unit rating plate. Power supply to the furnace must
be NEC Class 1, and must comply with all applicable codes.
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 and/or The Canadian
Electric Code CSA C22.1.
Use a separate fused branch electrical circuit containing
properly sized wire, and fuse or circuit breaker. The fuse or
circuit breaker must be sized in accordance with the maximum
overcurrent protection specified on the unit rating plate. An
electrical disconnect must be provided at the furnace location.
Line voltage wiring must enter into the junction box provided
with the furnace.
NOTE: Line polarity must be observed when making field
connections.
Fossil Fuel Applications
This furnace can be used in conjunction with a heat pump in
a fossil fuel application. A fossil fuel application refers to a
combined gas furnace and heat pump installation which uses
an outdoor temperature sensor to determine the most cost
efficient means of heating heat pump or gas furnace.
A heat pump thermostat with two stages of heat is required
to properly use a furnace in conjunction with a heat pump.
Refer to the fossil fuel kit installation instructions for additional
thermostat requirements.
Strictly follow the wiring guidelines in the fossil fuel kit instal-
lation instructions. All furnace connections must be made
to the furnace integrated control module and the FURNACE
terminal strip on the fossil fuel control board.
WARNING
,
ELECTRICAL SHOCK OR
Junction Box Relocation
E
DGES OF SHEET METAL HOLES MAY BE SHARP
PRECAUTION WHEN REMOVING HOLE PLUGS
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. To make electrical
connections through the opposite side of the furnace, the
junction box must be relocated to the left side prior to making
electrical connections. To relocate the junction box, perform
the following steps.
T
O PREVENT PERSONAL INJURY OR DEATH DUE TO ELECTRIC SHOCK
DISCONNECT ELECTRICAL POWER BEFORE INSTALLING OR SERVICING THIS
.
UNIT
1. Remove both doors from the furnace.
2. Remove and save the screws holding the junc tion box
to the right side of the furnace.
3. Models that have the junction box located in the burner
compartment will need to move the junction box directly
over.
4. Attach the junction box to the left side of the fur nace,
using the screws removed in step 2.
5. Check the location of the wiring. Confirm that it will
not be damaged by heat from the burners or by the
rotation of the fan. Also confirm that wiring location will
not interfere with fil ter removal or other maintenance.
After the junction box is in the desired location, use washers
to connect field-supplied conduit to the junction box in accor-
dance with NEC and local codes. Connect hot, neutral, and
ground wires as shown in the furnace wiring diagram. The
wires and ground screw are located in the furnace junction box.
NOTE: In downflow applications the power leads should be
routed through the supplied wire tabs when rotating junction
box to the left side.
Low voltage wires may be connected to the terminal strip.
IMPORTANT NOTE: To avoid possible equipment malfunc-
tion, route the low voltage wires to avoid interference with filter
removal or other maintenance.
HIGH VOLTAGE !
T
O AVOID THE RISK OF INJURY
,
DEATH
THE FURNACE MUST BE ELECTRICALLY
GROUNDED IN ACCORDANCE WITH LOCAL CODES OR IN
,
THEIR ABSENCE
WITH THE LATEST EDITION OF THE
N
E
C
ATIONAL
LECTRIC
ODE
12
WARNING
. U
SE GLOVES AS A
.
WARNING
WARNING
,
ELECTRICAL SHOCK OR
.
,
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