5
Figure 4. Wire to One Indoor Unit
4. Reattach the controller to the back cover.
5. Connect the controller to one or more indoor units, up to 16. Use 4-conductor shield-
ed cable to connect to the fi rst indoor unit.
NOTE -
Wiring is polarity sensitive.
See
Figure 4.
GND
(E)
12V
X
Y
12V
X
Y
E
NOTE - 1. Connect up to 16 indoor units
2. Ground cable shielding at indoor unit
3. Connect terminal “GND/(E)” on the controller to terminal “E” on the indoor unit
CAUTION
Connect “12V” on the controller to
terminal “12V” on the fi rst indoor unit
only. 12V connection provides power
to controller; connection to multiple
indoor units will damage controller and
indoor unit boards.
