ION SYST0101CW Installation Instructions Manual page 51

8. Wiring Diagrams
User Interface
DX+
DX- DX-
C
R
S1
S2
*NOTE: Some outdoor units do not require the "C
Variable-Speed
Furnace/ Fan Coil
Green - Data A
Yellow - Data B
White - COM
Red - 24VAC
Optional Remote
Room Sensor
Humidifier
Connection
See outdoor unit Installation Instructions.
Universal Four-Wire Connection
Green
DX+
Yellow
DX-
White
C
Red
R
Communications
HUM
Connections
COM
24V
OAT
Sensor
OAT
(Optional)
" and "R" connections.
51
Communicating
AC, HP or GHP*
DX+
DX-
C
R
A160107I