Carrier 38CKG - Page 9

24 VAC HOT
R
C
W/W1
Y/Y2
G
R
DH
W2
W1
Y/Y2
CARRIER
NON-PROGRAMMABLE
THERMOSTAT
MODEL AC
FK4C
FAN COIL
AIR
CONDITIONER
C
INDOOR FAN
HEAT STAGE 1
COOL STAGE 1
24 VAC COM
Y1
C
SEE
NOTE 2
G
O
J2 JUMPER
J1 JUMPER
A97471
24 VAC HOT
R
W
Y
G
R
DH
W1
W2
Y/Y2
OTHER
NON-PROGRAMMABLE
AC THERMOSTAT
FK4C
FAN COIL
AIR
CONDITIONER
C
INDOOR FAN
HEAT STAGE 1
COOL STAGE 1
Y1
C
SEE
NOTE 2
G
O
J1 JUMPER
J2
JUMPER
A97365
24 VAC HOT
R
G
W/W1
Y/Y2
O/W2
R
DH
W1
W2
Y/Y2
C
B
S1
S2
CARRIER
PROGRAMMABLE
THERMOSTAT
MODEL AC
FK4C
FAN COIL
AIR
CONDITIONER
G
Y1/W2
L
INDOOR FAN
HEAT STAGE 1
COOL STAGE 1
NOT USED
24 VAC COM
NOT USED
NOT USED
NOT USED
OPTIONAL
OUTDOOR
SENSOR
CONNECTION
C
Y1
O
C
SEE
NOTE 2
J2 JUMPER
J1 JUMPER
A97472
Fig. 7—Typical 24–v Circuit Connections (Continued)
A97368
LEGEND
24-V FACTORY WIRING
24-V FIELD WIRING
FIELD SPLICE CONNECTION
CONTACTOR
C
NOTES:
1. CARRIER THERMOSTAT-WIRING DIAGRAMS ARE ONLY ACCURATE FOR MODEL NUMBERS BEGINNING WITH TSTAT_
______.
2. WIRING MUST CONFORM TO NEC OR LOCAL CODES.
3. SOME UNITS ARE EQUIPPED WITH PRESSURE SWITCH(ES), TEMPERATURE SWITCH, OR 5–MINUTE COMPRESSOR-CYCLE
PROTECTION. CONNECT 24–V FIELD WIRING TO FACTORY-PROVIDED STRIPPED LEADS.
4. THERMOSTATS ARE FACTORY CONFIGURED WITH 5–MINUTE COMPRESSOR-CYCLE PROTECTION AND 4–CYCLES–PER-
–HOUR LIMIT. SEE THERMOSTAT-INSTALLATION INSTRUCTIONS FOR DETAILS.
5. TO STAGE ELECTRIC-RESISTANCE HEAT, CONSULT OUTDOOR THERMOSTAT-INSTALLATION INSTRUCTIONS.
6. A LIQUID LINE SOLENOID VALVE IS REQUIRED ON SOME UNITS. SEE SPECIFIC UNIT INSTRUCTIONS.
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