GMV DC Inverter VRF 
43 
Step 2: Tighten the cable with a cable tie. 
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