Fig. 8—Typical 24-v Circuit Connections (Continued)
G
A98585
O/W2
W/W1
Y1/W2
G
R
O
Y1
40FKA
FK4C
FAN COIL
TWO-SPEED
HEAT PUMP
W1
G
W2
C
Y2
R
W3
W2
Y1
O
C
DHUM
HUM
B
S1
S2
Y/Y2
R
C
DH
COOL/HEAT
STAGE 1
HEAT STAGE 3
COOL/HEAT
STAGE 2
RVS COOLING
FAN
24 VAC HOT
24 VAC COMM
DEHUMIDIFY
HUMIDIFY
N/A
OUTDOOR
SENSOR
CONNECTION
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
See notes 7, 8, 11, 13, 16, 17, and 23
J2 JUMPER
REMOVE J1
CARRIER
THERMIDISTAT
CONTROL
MODEL RH
E
A98583
24 VAC HOT
FAN
R
G
R
G
24 VAC COMM
N/A
OUTDOOR
SENSOR
CONNECTION
C
B
S1
S2
C
C
L
R
CARRIER
PROGRAMMABLE
THERMOSTAT
MODEL 2S
40FKA
FK4C
FAN COIL
J1
JUMPER
J2 JUMPER
TWO-SPEED
HEAT PUMP
See notes 7, 8, 9, 11, and 23
DH
Y1
Y1
W/W1
O/W2
Y1/W2
O
W1
Y/Y2
Y2
W2
W3
Y/Y2
O
W2
COOL/HEAT
STAGE 1
COOL/HEAT
STAGE 2
HEAT STAGE 3
RVS COOLING
H
A98628
R
Y2
R
Y2
C
C
C
O
O
W2
W3
R
L
Y1
OTHER BRAND
TWO-SPEED
THERMOSTAT
40FKA
FK4C
FAN COIL
TWO-SPEED
HEAT PUMP
J1 JUMPER
J2 JUMPER
G
G
Y/Y2
DH
W2
W1
Y1
O
Y1
W2
24 VAC HOT
24 VAC COM
FAN
RVS COOLING
COOL/HEAT
STAGE 2
HEAT STAGE 3
E
EMERGENCY
HEAT
COOL/HEAT
STAGE 1
See notes 8, 11, and 23
F
A98584
R
Y/Y2
R
Y2
W3
C
C
C
R
L
W2
O
Y1
CARRIER
NON-PROGRAMMABLE
THERMOSTAT
MODEL 2S
40FKA
FK4C
FAN COIL
TWO-SPEED
HEAT PUMP
J1 JUMPER
J2 JUMPER
See notes 7, 8 ,10, 11 and 23
G
G
Y/Y2
DH
W/W1
W1
Y1
O/W2
Y1
W2
O
B
S1
S2
24 VAC HOT
24 VAC COMM
FAN
RVS COOLING
OUTDOOR
SENSOR
CONNECTION
HEAT STAGE 3
COOL/HEAT
STAGE 2
COOL/HEAT
STAGE 1
N/A
7