Carrier AC - Wiring Diagrams (AC & HP Models)

R
Y/Y2
R
Y
W/W1
W1
C
MODEL AC
THERMOSTAT
FK4C
EASY SELECT
TERMINAL BOARD
SINGLE-SPEED
AIR CONDITIONER
J1 JUMPER
J2 JUMPER
See note 10
W2
Y/Y2
DH
G G
Y1
O
C
HEAT STAGE 1
24 VAC HOT
C
COOL STAGE 1
FAN
24 VAC COMM
A97240
→Fig. 14—Single-Speed Air Conditioner
with FK4C Fan Coil
24 VAC HOT


HEAT STAGE 1


24 VAC COMM


COOL STAGE 1


FAN
R
G
W/W1
Y/Y2
R
Y
C
C
C
MODEL HP
THERMOSTAT
FK4C
EASY SELECT
TERMINAL BOARD
SINGLE-SPEED
AIR CONDITIONER
J1 JUMPER
REMOVE
J2 JUMPER
FOR HEAT
STAGING
See notes 2, 3, and 10
G
W1
Y/Y2
DH
HEAT STAGE 2


N/A


N/A


OUTDOOR

SENSOR

CONNECTION
Y1
B
S1
S2
O/W2
Y1
O
W2
A97132
→Fig. 15—Single-Speed Air Conditioner
with FK4C Fan Coil
24 VOLT HOT


24 VOLT COMM


FAN


COOL STAGE 2


HEAT STAGE 1
R
Y/Y2
R
Y2
C
C
C
R
L
Y1
MODEL 2S
THERMOSTAT
FK4C
EASY SELECT
TERMINAL BOARD
TWO-SPEED
AIR CONDITIONER
J1 JUMPER
REMOVE
J2 JUMPER
FOR HEAT
STAGING
See notes 2, 3, 4, and 10
G
G
Y/Y2
DH
W/W1 W1
HEAT STAGE 2


COOL STAGE 1

Y1
O/W2
Y1
O
W2
B
S1
S2
N/A

OUTDOOR

SENSOR

CONNECTION
A97133
→Fig. 16—Two-Speed Air Conditioner
with FK4C Fan Coil
24 VAC HOT


24 VAC COMM


FAN


COOL/HEAT
STAGE 1

HEAT STAGE 2
R
Y/Y2
R
C
C
C
R
MODEL HP
THERMOSTAT
FK4C
EASY SELECT
TERMINAL BOARD
SINGLE-SPEED
HEAT PUMP
J1 JUMPER
J2 JUMPER
See notes 6 and 10
G
G
Y/Y2
DH
W/W1 W1
N/A


RVS COOLING


RVS HEATING


OUTDOOR

SENSOR

CONNECTION
Y1
B
S1
S2
O/W2
Y1
O
W2 W2
Y
O
A97134
→Fig. 17—Single-Speed Heat Pump
with FK4C Fan Coil
7