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WIRING DIAGRAM
For 80+ and 90+ 2-Stage Fixed Speed Upflow Furnaces
Refer to the Installation Instructions
This wiring diagram shows connections and
provided with the kit for the proper
termination required for the blower kit only.
heating and cooling speeds for your
Use in addition to the wiring diagram for the
application.
furnace.
CONDENSATE
(ON SELECT
MODELS)
LOW
ORANGE
PRESSURE
PRESSURE
SWITCH
SWITCH
ORANGE
HIGH
VIOLET
PRESSURE
PRESSURE
SWITCH
SWITCH
VIOLET
GREEN
GAS
VALVE
3 3
BROWN
C
HI
2 2
BROWN
YELLOW
LO
1 1
RED
FLAME SENSOR
BLUE
BLUE
BLUE
SUPPLY
FLAME
VENT LIMIT
AIR LIMIT
ROLL-OUT
(ON SELECT
MODELS)
WHITE
BLACK
WHITE
DOOR
(NEUTRAL)
SWITCH
BLACK 120V
GROUND
GREEN
LEGEND:
FIELD WIRING
LOW VOLTAGE
HIGH VOLTAGE
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.
Use copper conductors only.
WHITE
WHITE W/ BLK STRIPES
120 V
24 V
BLACK
BLK W/ WHITE STRIPES
1 2 3 4
1 2 3 4
BLACK
WHITE
Y/Y2 Y1 G
W2 W1 C R
10 11 12
7
8
9
4
5
6
1
2
3
BLWR OFF
DELAY
1 2 3 4 5
BLACK
INDUCER
C
1 1
H
2 2
IGNITOR
L
1 2 3
1 2 3
Diagnostic Description
Control Fault (No Power)
L1 / Neutral Polarity Fault
1 Hour Lockout
Normal Operation
Pressure Switch Closed Fault
Pressure Switch Open Fault
Open Limit Switch Fault
Motor Fault
Diagnostic Description
Low Flame Sensor Signal
Flame Present
BLUE
BLOWER
LIMIT
BLOWER
LIMIT
BROWN
BROWN
1 1
1
RED
RED
2 2
2
ORANGE
ORANGE
3 3
3
YELLOW
YELLOW
4
4 4
GREEN
GREEN
5 5
5
BLUE
BLUE
6 6
6
BLUE
BLUE
7 7
BLACK
BLACK
8 8
WHITE
WHITE
9 9
FAULT CONDITIONS
Green LED
Red LED
Off
Off
Flash
Flash
Alternating Flash
On
On
On
Flash
Flash
On
Flash
Off
On
Off
Yellow LED
Continuous Flash
On
RED
RED
RED
PART OF
MOTOR
W
W
R
TX
TORQUE
C
RX
SPEED
MOTOR
GND GND
HP
RX
C
COMMON
NONE
TX
R
PWM
W
MODE
NONE
R
C
Y1 DEHUM
TWIN
1
MOTOR CHOKE
2
(ON 3/4 AND 1HP
3
MOTORS ONLY)
4
BLACK
BLACK
5
6
710916B
(Replaces 710916A)
04/11
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