Wiring Diagrams - Carrier SYSTXCCITN01-A Installation Instructions Manual

8. Wiring Diagrams

User Interface
Green - Data A
A
Yellow - Data B
B
White - COM
C
Red - 24VAC
D
S1
Optional Remote
Room Sensor
S2
Humidifier
Connection
*NOTE: Some outdoor units do not require the "C" and "D" connections.
See outdoor unit Installation Instructions.
*NOTE: For SPP products, ABCD connection between Indoor and Outdoor
control boards are pre-wired at the factory.
*NOTE: For new SPP installations in which the OAT Sensor is required,
please refer to the SPP Installation Instructions.
Universal Four- - Wire Connection
Variable-Speed
Furnace/ Fan Coil
Communicating
AC or H P*
Green
A
Yellow
B
B
White
C C
Red
D D
ABCD
HUM
Connections
COM
24V
OAT
Sensor
OAT
(Optional)
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