Application Wiring Diagrams - Bryant B Series Service And Maintenance Procedures Manual

WIRE
THREE-WIRE
115-V FIELD-
HEATING-
SUPPLIED
ONLY
DISCONNECT
BLK BLK
WHT WHT
GND
JUNCTION
BOX
GREEN CONTROL
DEHUM
AFS
NOTE 6
FURNACE
→ Fig. 7—Heating and Cooling Application Wiring Diagram
for Single-Stage Thermostats and/or Single-Speed Condensing Units
SEVEN
WIRE
FOUR-WIRE
115-V FIELD-
HEATING-
SUPPLIED
ONLY
DISCONNECT
BLK
BLK
WHT WHT
GND
JUNCTION
BOX
CONTROL
GREEN
DEHUM
AFS
NOTE 5
FURNACE
→ Fig. 8—Heating and Cooling Application Wiring Diagram
for 2-Stage Thermostats and/or 2-Speed Condensing Units
NOTE 2
W C Y
FIVE
W2
COM
W/W1
NOTE 1
Y/Y2
R
G
NOTE 4
24-V
Y1
TERMINAL NOTES: 1.
BLOCK 2.
3.
4.
NOTE 5
5.
O
6.
NOTE 2
C W2 W1 Y2 R
W2
COM
W/W1
NOTE 1
Y/Y2
R
G
Y1
24-V
TERMINAL NOTES: 1.
BLOCK 2.
3.
4.
NOTE 4
5.
O
—6—
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
1-STAGE
THERMOSTAT
R G
FIELD-SUPPLIED
TERMINALS
FUSED DISCONNECT
CONDENSING
UNIT
Connect Y/Y2-terminal as shown for proper operation.
Some thermostats require a "C" terminal connection as shown.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
Y1 is not to be connected.
Connect O to thermostat-O only for heat pump applications.
Field-supplied humidistat for dehumidification in cooling (optional).
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
2-STAGE
THERMOSTAT
G Y1
FIELD-SUPPLIED
TERMINALS
FUSED DISCONNECT
C
Y1
Y2
2-SPEED
CONDENSING
UNIT
Connect Y1 and Y/Y2 as shown for proper operation.
Some thermostats require a "C" terminal connection as shown.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
Connect O to thermostat-O only for heat pump applications.
Field-supplied humidistat for dehumidification in cooling (optional).
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
GND
A99231
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
GND
A99232