1
2
3
1
2
3
FLAME
ROLL-OUT
SUPPLY
AIR LIMIT
LOW
PRESSURE
SWITCH
HIGH
PRESSURE
SWITCH
FLAME SENSOR
24 V
120 V
WHITE
BLACK
WHITE W/ BLK STRIPES
BLK W/ WHITE STRIPES
1234
1234
IGNITOR
DOOR
SWITCH
1
2
1
2
TORQUE
MOTOR
BLACK
WHITE
BLACK
WHITE
BLOWER
LIMIT
BLOWER
LIMIT
WHITE
ORANGE
YELLOW
RED
BLACK
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
WHITE
ORANGE
YELLOW
RED
BLACK
BLACK
WHITE
BLUE
ORANGE
BLUE
YELLOW
WHITE
RED
BLACK
BLACK BLACK
GAS
VALVE
LO
HI
C
INDUCER
H
L
C
123
123
R
C
GND
RX
TX
W
R C Y1 TWINDEHUM
HP
SPEED
COMMON
PWM
MODE
NONE
NONE
R
C
GND
RX
TX
W
W1
COOL
FAN SPEED
HEAT
11
4
1
8
7
10
5
2
9
3
12
6
LINE- N
XMFR-N
LINE
LINE
XMFR
EAC
HUM
LINE- N
14325
R
C
TX
RX
W
COM
RCY/Y2 W2GW1Y1
BLWR OFF
DELAY
BLOWER DECK
LIMIT
BLUE
BROWN
GRAY
PA R T O F
MOTOR
12
BLACK
BLACK
BLACK
WHITE
RED
RESISTOR
For 80+ and 90+ 2-Stage Fixed Speed Downflow Furnaces
WIRING DIAGRAM
10160870
FIELD WIRING
LEGEND:
09/16
LOW VOLTAGE
HIGH VOLTAGE
BLUE
BLUE
BLUE
BLUE
BLACK
BLACK 120V
WHITE
BLACK
BLACK
BLACK
WHITE
WHITE
(NEUTRAL)
BLACK
WHITE
RED
GREEN
GROUND
GREEN
BROWN
YELLOW
BROWN
VIOLET
VIOLET
ORANGE
ORANGE
VENT LIMIT
(ON SELECT
MODELS)
MOTOR CHOKE
(ON 3/4 AND 1HP
MODELS ONLY)
Refer to the Installation Instructions
provided with the kit for the proper
heating and cooling speeds for your
application.
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.
This wiring diagram shows connections and
termination required for the blower kit only.
Use in addition to the wiring diagram for the
furnace.
Control Fault (No Power) Off Off
L1 / Neutral Polarity Fault Flash Flash
Pressure Switch Closed Fault On Flash
Pressure Switch Open Fault Flash On
Open Limit Switch Fault Flash Off
