Carrier A94134 Installation, Start-Up, And Operating Instructions Manual page 5

MODEL 2S SINGLE-STAGE
THERMOSTAT
COOL STAGE 1 Y1/W2
FAN G
HEAT STAGE 1 W/W1
COOL STAGE 2 Y/Y2
N/A O/W2
24 VAC HOT R
24 VAC COMM. C
N/A B
TROUBLE L
S1
OUTDOOR
SENSOR
S2
CONNECTION
Fig. 8—Two-Speed Air Conditioner with Single-
Stage Furnace
MODEL 2S TWO-STAGE OR
THERMOSTAT VARIABLE-SPEED
COOL STAGE 1
Y1/W2
FAN G
HEAT STAGE 1 W/W1
COOL STAGE 2 Y/Y2
HEAT STAGE 2 O/W2
24 VAC HOT R
24 VAC COMM. C
N/A B
TROUBLE L
S1
OUTDOOR
SENSOR
S2
CONNECTION
Fig. 9—Two-Speed Air Conditioner with 2-Stage or
Variable-Speed Furnace
TWO-SPEED
FURNACE AIR CONDITIONER
Y1
G
W
Y2
Y
R R
C C
L
See note 4
A94221
TWO-SPEED
AIR CONDITIONER
FURNACE
Y1
G
W/W1
Y/Y2 Y2
W2
R R
C C
L
See note 5
A94222
MODEL 2S
THERMOSTAT
24 VAC HOT R
FAN G
HEAT STAGE 1 W/W1
COOL STAGE 2 Y/Y2
HEAT STAGE 2 O/W2
COOL STAGE 1 Y1/W2
24 VAC COMM. C
N/A B
L
TROUBLE
S1
OUTDOOR
SENSOR
S2
CONNECTION
Fig. 10—Two-Speed Air Conditioner with Typical
MODEL 2S
THERMOSTAT
COOL/HEAT Y1/W2
STAGE 1
RVS COOLING
O/W2
HEAT STAGE 3 W/W1
COOL/HEAT Y/Y2
STAGE 2
FAN G
R
24 VAC HOT
24 VAC COMM. C
RVS HEATING B
L
TROUBLE
OUTDOOR S1
SENSOR
S2
CONNECTION
Fig. 11—Two-Speed Heat Pump with Single-Stage
5
TYPICAL TWO-SPEED
FAN COIL AIR CONDITIONER
R
G
W2
Y/Y2 *
Y2
W3
*
Y1 Y1
O *
C
E
L *
See notes 5 and 7
Fan Coil
SINGLE-STAGE TWO-SPEED
FURNACE HEAT PUMP
W
Y
G
R
C
See note 4
Furnace
R
C
L
A94223
Y1
O
W2
Y2
W3
R
C
L
A94224