Carrier 38CKB - Manual (Page 5)

Fig. 5—24-v Control Circuit Connections
A94331
G
W/W1
R
C
C G
Y
R
W
Y
G
Y
R
C
M
MOTOR
POWER
SUPPLY
G
R
C
C G
Y
R
W
Y
W2
G
R
C
C G
Y
R
W
Y
W
LLS
TRANS
THERMOSTAT THERMOSTAT FURNACE
COOLING ONLY ONE STAGE COOLING / GAS HEATING
ONE STAGE COOLING / ELECTRIC HEAT
THERMOSTAT FAN COIL THERMOSTAT INDOOR UNIT
ONE STAGE COOLING / HEATING
ACCESSORY LIQUID LINE SOLENOID
NOTES:
1. Wiring must conform to local codes.
2. LLS required on some units. See specific unit instructions.
3. Transformer required is 24-v, 40-va minimum. A 60-va or external power source may
be necessary when installing accessories.
4. When installing electronic thermostat, connect transformer common to thermostat C.
LEGEND:
– COMPRESSOR CONTACTOR
– LIQUID LINE SOLENOID
– INDOOR FAN MOTOR
– TRANSFORMER
C
LLS
M
TRANS
IFR
– INDOOR FAN RELAY IFR
5