→ Fig. 12—Two-Speed Heat Pump
with 2-Stage or Variable-Speed Furnace
A98461
24 VAC HOT
24 VAC COMM
HEAT STAGE 3
COOL/HEAT
STAGE 2
FAN
R
C
G
W/W1
Y/Y2
R
C
RVS COOLING
COOL/HEAT
STAGE 1
N/A
OUTDOOR
SENSOR
CONNECTION
Y1
B
S1
S2
C
MODEL 2S
THERMOSTAT
TWO-STAGE OR
VARIABLE-SPEED
FURNACE
TWO-SPEED
HEAT PUMP
See notes 1, 6, 7, 8, and 10
G
O/W2
HUM
R
Y2
Y1
O
W2
W3
W2
O
Y1
W/W1
Y/Y2
*
*
→ Fig. 10—Two-Speed Air Conditioner
with Typical Fan Coil
A98459
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
Y1
MODEL 2S
THERMOSTAT
TYPICAL
FAN COIL
TWO-SPEED
AIR CONDITIONER
See notes 2, 4, 5, 6, 8, and 11
Y
G
O/W2
*
W2
R
Y2
E
W3
→ Fig. 13—Two-Speed Heat Pump
with Typical Fan Coil
A98462
24 VAC HOT
24 VAC COMM
COOL/HEAT
STAGE 2
R
C
G
W/W1
Y/Y2
R
C
RVS COOLING
COOL/HEAT
STAGE 1
N/A
OUTDOOR
SENSOR
CONNECTION
Y1
B
S1
S2
W3
C
Y1
MODEL 2S
THERMOSTAT
TYPICAL
FAN COIL
TWO-SPEED
HEAT PUMP
See notes 5, 6, 7, 8, 10, and 11
Y
G
O/W2
*
W2
R
Y2
E
W3
O
W2
HEAT STAGE 3
FAN
→ Fig. 11—Two-Speed Heat Pump
with Single-Stage Furnace
A98460
24 VAC HOT
24 VAC COMM
HEAT STAGE 3
COOL/HEAT
STAGE 2
FAN
R
C
G
W/W1
Y/Y2
R
C
RVS COOLING
COOL/HEAT
STAGE 1
N/A
OUTDOOR
SENSOR
CONNECTION
Y1
B
S1
S2
C
MODEL 2S
THERMOSTAT
SINGLE-STAGE
FURNACE
TWO-SPEED
HEAT PUMP
See note 5, 7, 8, and 10
G
O/W2
W
R
Y
Y2
Y1
O
W2
W3
7