GMV Heat Recovery DC Inverter VRF
46
Step 3: Please refer to the engineering wiring mark on the unit for the power cord connection.
WARNING!
When the power cord and the communication line pass through the wire hole, they
must be equipped with wire rubber ring.
3.8.3.2 External Wiring Diagram
Each unit should be equipped with a circuit breaker for short circuit and abnormal overload
protection. The circuit breaker is normally closed.
Fig.3.8.3
3.8.4 Wiring Diagram
Refer to the wiring diagram attached on the unit.
3.9 Communication Line Connection
Adopt CAN bus communication mode between indoor unit and outdoor unit as well among indoor
units.
3.9.1 Connection Method of Communication Line Terminal
Communication connections adopts screws for fixing.
Fig.3.9.1
3.9.2 Communication Material Selection
NOTE!
If the air conditioning unit is installed in a place with strong electromagnetic interference, the
communication line between the indoor unit and the wired controller must adopt shielded wires; the
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