CR
FLAME
SENSOR
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
12345
12345
GREY
YELLOW
BLUE
BROWN
ORANGE
WHITE
RED
GREEN
VARIABLE
SPEED
BLOWER
MOTOR
YELLOW
LOW
HI HI
LOW
BLOWER
DOOR
SWITCH
TRANSFORMER
24 V
120 V
WHITE/BLACK
BLACK/WHITE
WHITE
BLACK
IGNITOR
INDUCER
PRIMARY
GAS
VALVE
WHITE BLACK
GREEN
5-PIN
PLUG
9-PIN PLUG
1
1
2
2
1
2
1
2
3
3
BUSHING
BUSHING
HARNESS
BLACK
WHITE
GREEN
3-PIN PLUG
3-PIN PLUG
6-PIN PLUG
2-PIN PLUG
3-PIN HOUSING
(SUPPLIED W/INDUCER)
2-PIN HOUSING
6-PIN
PLUG
GN
RED
BROWN
WHITE
BLACK
BLACK
BLUE
BLUE
VARIABLE SPEED
BLOWER CONTROL
BOX
POWER FACTOR
CORRECTION
CHOKE
YELLOW
BROWN
CLOSED END
CONNECTOR
BROWN
HARNESS, LV
YELLOW
BLUE
VENT SAFETY
SWITCH
HI
LO
C
SUPPLY AIR
LIMIT SWITCH
FLAME ROLL-OUT
SWITCH
BLUE
12
13
14
15
16
10
11
12
13
14
15
16
10
11
VIOLET
BLACK
RED
ADD ON BOARD
GN
BLACK
Y2
Y2
W2
RED
YELLOW/BLACK
BLACK
YELLOW
CONDENSATE
PRESSURE
SWITCH
BLOCKED VENT
PRESSURE
SWITCH
VIOLET
ORANGE
ORANGE
VIOLET
YELLOW
YELLOW
BROWN
BLACK
8
H
U
M
H
U
M
13R1210
57112W4
1234567
SWITCHES
9
GREY
BLACK
JUMPER
1
2
3
1
2
3
4
5
6
FLAME
R
C
Y
G
W
TWIN
STATUS
L1
XFMR
EAC
COOL
HEAT
M3
M2
M1
HUM
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
NEUTRALS
EAC
COM
3 AMP FUSE
BLOWER OFF
24V
HUM
NOTES:
1. Use copper conductors only.
2. If any original wire supplied with the furnace must
be replaced, it must be replaced with wiring
material having temp. rating of at least 105° C.
3. Refer to installation instructions provided
with furnace for the appropriate heating and
cooling speed settings for your application.
4. Ensure that wires from blower remain
connected to the board thermostat terminals
after making the field thermostat connections.
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
1
2
3
4
5
6
7
8
9
12
13
14
15
16
10
11
Y1
Y2
Y1
Y2
THERMOSTAT
RC Y GW
BLUE
Y2
YELLOW
Y1
TWO STAGE CONDENSING UNIT
W2
Y2
Y2
OPTIONAL Y2
TERMINAL
OPTIONAL
HUMIDISTAT
(WIRED
NORMALLY
CLOSED)
REMOVE
JUMPER
Limit Circuit Open or External Load On "W" 1 FLASH
Pressure Switch is Open with Inducer On 2 FLASHES
Hi Pressure Switch is Open (Add-on board LED) 2 FLASHES
Pressure Switch is Closed with Inducer Off 3 FLASHES
Ignition Failure (Check Ground) 4 FLASHES
115 VAC & Neutral Reversed or no Ground 5 FLASHES
False Flame or Gas Valve Relay Shorted Continuous
7106620 (Replaces 7106420)
WIRING DIAGRAM
¢710662®¤
(01/07)
For 95+ 2-Stage Variable Speed Model Furnaces (2-Stage Induced Draft Blower)
7106620
