4
C/
GND
R/
12V
X
Y
12V X
Y
E
NOTE - 1. Connect terminal “C/GND” on the controller to terminal “E” on the indoor unit.
2. Ground cable shielding at the indoor unit.
3. Use stranded, shielded, 18 GA cable.
Figure 1. Connect Controller to Single Indoor Unit Wiring Connections
Connecting to One Indoor Unit
Connect the controller to one indoor unit main control board using 4-conductor shielded 18 GA
cable. Connect to terminals X Y C/GND and R/12V. See Figure 1.
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