Carrier 38YCX Installation And Start-Up Instructions Manual page 5

FB4ASX
FAN COIL
THERMOSTAT
R R
G G
C C
W2 W2
E
L
O
Y
SYSTEMS WITHOUT
OUTDOOR THERMOSTAT
HEAT PUMP
R
C
W2
O
Y
A97053
FB4ASX
THERMOSTAT FAN COIL
R
G
C
W2
L
E
O
Y
C 1 4
EMERGENCY HEAT RELAY
SYSTEMS WITH TWO
OUTDOOR THERMOSTATS
Fig. 7—24-v Control Circuit Connections
THERMOSTAT
R
G
C
W2
E
BLU
L
O
Y
SYSTEMS WITH ONE
OUTDOOR THERMOSTAT
HEAT PUMP
R R
G
C C
W2 W2
ODTS1
BLU
W3
VIO
E
ODTS2
O
7 C 9 6 3
5
FB4ASX
HEAT PUMP
FAN COIL
R R
G
C C
W2 W2
E
ODTS
W3
O
Y
Y
A97054
A97052