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CARRIER
PROGRAMMABLE
THERMOSTAT
MODEL 2S
COOL/HEAT
Y1/W2
STAGE 1
FAN
G
W/W1
HEAT STAGE 3
COOL/HEAT
Y/Y2
STAGE 2
O/W2
RVS COOLING
24 VAC HOT
R
C
24 VAC COMM
N/A
B
S1
OUTDOOR
SENSOR
S2
CONNECTION
H
R1
SINGLE-STAGE
TWO-SPEED
FURNACE
HEAT PUMP
Y1
G
W
W2
Y2
O
R
R
C
C
W3
Y
L
See notes 7, 9, 11,14 and 24
J
Fig. 8—Typical 24-v Circuit Connections (Continued)
CARRIER
NON-PROGRAMMABLE
THERMOSTAT
MODEL 2S
24 VAC HOT
24 VAC COMM
HEAT STAGE 3
COOL/HEAT
STAGE 2
FAN
RVS COOLING
COOL/HEAT
STAGE 1
N/A
OUTDOOR
SENSOR
CONNECTION
H
R1
A98586
8
SINGLE-STAGE
FURNACE
R
R
C
C
W/W1
W
Y/Y2
G
G
Y
O/W2
Y1
B
S1
S2
See notes 7, 10, 11, 14 and 24
K
TWO-SPEED
HEAT PUMP
R
C
Y2
W3
O
Y1
L
A98587
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