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COOL STAGE 1
FAN
HEAT STAGE 1
COOL STAGE 2
N/A
24 VAC HOT
R
W/W1
Y/Y2
O/W2
Y1/W2
G
24 VAC COMM
N/A
OUTDOOR
SENSOR
CONNECTION
C
B
S1
S2
C
Y2
C
PROGRAMMABLE
THERMOSTAT
MODEL 2S
SINGLE-STAGE
FURNACE
TWO-SPEED
AIR CONDITIONER
W
R
Y1
R
G
Y
See notes 1, 2, 3, and 5
A01501
24 VAC HOT
24 VAC COMM
HEAT STAGE 1
COOL STAGE 2
FAN
R
C
G
W/W1
Y/Y2
R
C
HEAT STAGE 2
COOL STAGE 1
N/A
OUTDOOR
SENSOR
CONNECTION
Y1
B
S1
S2
C
NON-PROGRAMMABLE
THERMOSTAT
MODEL 2S
TWO-STAGE
FURNACE WITH
PSC BLOWER
MOTOR
TWO-SPEED
AIR CONDITIONER
G
O/W2
R
Y2
W/W1
Y/Y2
W2
Y1
HUM
See notes 1, 2, 3, 4, and 10
A01502
COOL STAGE 1
FAN
HEAT STAGE 1
COOL STAGE 2
HEAT STAGE 2
24 VAC HOT
R
W/W1
Y/Y2
O/W2
Y1/W2
G
24 VAC COMM
N/A
OUTDOOR
SENSOR
CONNECTION
C
B
S1
S2
C
Y2
C
NON-PROGRAMMABLE
THERMOSTAT
MODEL 2S
TWO-STAGE
FURNACE WITH
PSC BLOWER
MOTOR
TWO-SPEED
AIR CONDITIONER
R
Y1
R
G
W/W1
HUM
Y/Y2
W2
See notes 1, 2, 3, 5, and 10
A01503
O/W2
W/W1
Y1/W2
G
R
NON-PROGRAMMABLE
THERMOSTAT
MODEL 2S
FURNACE
BOARD
AFS
BOARD
TWO-SPEED
AIR CONDITIONER
VARIABLE SPEED
80% NON-CONDENSING FURNACE
W/W1
G
Y/Y2
C
Y2
Y1
C
B
S1
S2
R
W2
O
Y1
R
COM
HUM
PL9-10
DEHUM
HEAT STAGE 1
COOL STAGE 2
COOL STAGE 1
HEAT STAGE 2
FAN
24 VAC HOT
24 VAC COM
N/A
OUTDOOR
SENSOR
CONNECTIONS
Y/Y2
See note 1, 2, 3, 4, and 10
A01504
O/W2
W/W1
Y1/W2
G
R
PROGRAMMABLE
THERMOSTAT
MODEL 2S
FURNACE
BOARD
AFS
BOARD
TWO-SPEED
AIR CONDITIONER
VARIABLE SPEED
80% NON-CONDENSING FURNACE
W/W1
G
Y/Y2
C
Y2
Y1
C
B
S1
S2
R
W2
O
Y1
R
COM
HUM
PL9-10
DEHUM
HEAT STAGE 1
COOL STAGE 2
COOL STAGE 1
HEAT STAGE 2
FAN
24 VAC HOT
24 VAC COM
N/A
OUTDOOR
SENSOR
CONNECTIONS
Y/Y2
See notes 1, 2, 3, 5, and 10
A01505
O/W2
W/W1
Y1
G
R
NON-PROGRAMMABLE
THERMOSTAT
MODEL 2S
VARIABLE-SPEED
CONDENSING
FURNACE
TWO-SPEED
AIR CONDITIONER
W/W1
G
Y/Y2
C
Y2
R
Y1
C
B
S1
S2
W2
R
C
HEAT STAGE 1
COOL STAGE 1
COOL STAGE 2
HEAT STAGE 2
FAN
24 VAC HOT
24 VAC COMM
N/A
OUTDOOR
SENSOR
CONNECTION
Y/Y2
HUM
DEHUM
DE
JUMPER
See notes 1, 2, 3, and 4
A01506
Fig. 11—Typical 24V Wiring Diagram (Cont)
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