Bryant 598B - Wiring Diagram Notes

O/W2
W/W1
Y1/W2
G
R
THERMIDISTAT
CONTROL
FURNACE
BOARD
AFS
BOARD
TWO-SPEED
AIR CONDITIONER
VARIABLE SPEED
80% NON-CONDENSING FURNACE
W/W1
G
Y/Y2
C
Y2
Y1
C
DHUM
HUM
B
S1
S2
R
W2
O
Y1
R
COM
HUM
PL9-10
DEHUM
HEAT STAGE 1
COOL STAGE 2
COOL STAGE 1
HEAT STAGE 2
FAN
24 VAC HOT
24 VAC COM
DEHUMIDIFY
HUMIDIFY
N/A
OUTDOOR
SENSOR
CONNECTIONS
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
See notes 11, 12, 13, 15, 16, and 17
A00397
V
O/W2
W/W1
Y1/W2
G
R
THERMIDISTAT
CONTROL
VARIABLE-SPEED
CONDENSING
FURNACE
TWO-SPEED
AIR CONDITIONER
W/W1
G
Y/Y2
C
Y2
R
Y1
C
DHUM
HUM
B
S1
S2
W2
R
C
HEAT STAGE 1
COOL STAGE 1
COOL STAGE 2
HEAT STAGE 2
FAN
24 VAC HOT
24 VAC COMM
DEHUMIDIFY
HUMIDIFY
N/A
OUTDOOR
SENSOR
CONNECTION
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
See notes 11, 12, 13, 16, and 18
HUM
DEHUM
DE
(NOTE 20)
A00398
W
WIRING DIAGRAM NOTES:
1. BRYANT THERMOSTAT WIRING DIAGRAMS ARE ONLY ACCURATE FOR MODEL NUMBERS BEGINNING WITH
TSTAT_______.
2. WIRING MUST CONFORM TO NEC OR LOCAL CODES.
3. CONNECT 24V FIELD WIRING TO FACTORY-PROVIDED STRIPPED LEADS.
4. THERMOSTATS ARE FACTORY CONFIGURED WITH 5 MINUTE COMPRESSOR CYCLE PROTECTION AND 4 CYCLES PER
HR LIMIT. SEE THERMOSTAT INSTALLATION INSTRUCTIONS FOR DETAILS.
5. TO STAGE ELECTRIC RESISTANCE HEAT, CONSULT OUTDOOR THERMOSTAT INSTALLATION INSTRUCTIONS.
6. WHEN USED IN TWO-SPEED AIR CONDITIONER INSTALLATIONS THERMOSTAT DIP SWITCH C SHOULD BE IN THE “ON”
POSITION. IN THIS CONFIGURATION, O/W2 IS USED TO CONTROL SECOND-STAGE HEAT.
7. TERMINALS MARKED WITH AN * MAY NOT BE PRESENT ON EQUIPMENT.
8. REFER TO FAN COIL INSTALLATION INSTRUCTIONS FOR FEATURES AND ADDITIONAL WIRING INFORMATION.
9. CUT AND REMOVE R19 JUMPER AT THERMOSTAT TO CONVERT TO AIR CONDITIONER OPERATION.
10. TO ACTIVATE DEHUMIDIFY FUNCTION ON FK4C OR FV4A, REMOVE J1 JUMPER AT FAN COIL CONTROL BOARD.
11. THERMIDISTAT DIP SWITCH 1 SHOULD BE SET IN THE “OFF” POSITION FOR AIR CONDITIONER INSTALLATIONS. THIS
IS THE FACTORY DEFAULT.
12. THERMIDISTAT DIP SWITCH 2 SHOULD BE SET IN THE “ON” POSITION FOR TWO-SPEED COMPRESSOR OPERATION.
13. REFER TO INDOOR EQUIPMENT INSTALLATION INSTRUCTIONS FOR PROPER SETUP.
14. TO ACTIVATE DEHUMIDIFY FEATURE ON CURRENT STYLE VARIABLE-SPEED 80 percent NON-CONDENSING FURNACES
(333AAV), DISCONNECT GREEN (DEHUM) WIRE FROM G ON FURNACE CONTROL BOARD AND CONNECT TO DEHU-
MIDIFY TERMINAL DHU ON THERMIDISTAT.
15. AS AN OPTION, O/W2 CAN CONTROL SECOND-STAGE HEAT.
16. SEE TABLE 4—AIRFLOW SELECTION FOR 333AAV FURNACES.
17. SEE TABLE 5—AIRFLOW SELECTION FOR 355MAV FURNACES.
18. SEE TABLE 6—AIRFLOW SELECTION FOR FK4C and FV4A FAN COILS.
19. THE DE-JUMPER LOCATED NEXT TO THE ″DEHUM″ TERMINAL MUST BE REMOVED TO ENABLE THE ″DEHUM″ INPUT.
Fig. 9—Typical Accessory Wiring Diagrams (Cont’d)
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