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8. Wiring Diagrams
User Interface
S1
S2
*NOTE: Some outdoor units do not require the "C
*NOTE: F or SPP products, AB
*NOTE: F or new SPP installations in which the OA
Green - Data A
A
Yellow - Data B
B
White - COM
C
Red - 24VAC
D
Optional Remote
Room Sensor
Humidifier
Connection
See outdoor unit Installation Instructions.
cont r ol boar ds ar e pr e- w i r ed at t he f act or y.
please refer to the SPP Installation Instructions.
Universal Four-Wire Connection
Variable-Speed
Furnace/ Fan Coil
A
B
C
D
HUM
Connections
COM
24V
OAT
(Optional)
" and "D" connections.
CD connection between Indoor and Outdoor
T Sensor is required,
56
Communicating
AC, HP or GHP*
Green
Yellow
B
White
C
Red
D
ABCD
OAT
Sensor
A160107
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