6
Figure 5. Wire to One Indoor Unit
CAUTION
Connect “+12V” on the controller to
terminal “+12V” on the first indoor unit
only. 12V connection provides power
to controller; connection to multiple
indoor units will damage controller and
indoor unit boards.
7. Connect the controller to one or more indoor units, up to 16. Use 4-conductor shield-
ed cable to connect to the first indoor unit.
NOTE -
Wiring is polarity sensitive.
See
Figure 5.
COM +12V
HB
HA
NOTE -
1. Connect up to 16 indoor units
2. Ground cable shielding at indoor unit
3. All wiring is polarity sensitive
COM +12V
HB
HA