Connection Of Communication Cable Terminals; Connection Of Communication Cables; Communication Cable Connection Method And Procedure - Gree Ultra Heat GMV Multi VRF Heat Pump Series Service Manual

Ultra Heat GMV VRF Technical Service Manual

3.1 Connection of Communication Cable Terminals

All connections for communication of Ultra Heat GMV are fastened by screws.

3.2 Connection of Communication Cables

The communication bus of indoor and ODUs must be connected in series instead of in star mode.
The last IDU of the bus shall be connected to a matching resistor (placed in the package of the ODU).

3.3 Communication Cable Connection Method and Procedure

3.3.1 Communication cable connection between the IDUs and ODUs
The communication cable between the IDUs and ODUs is connected via interface D1/D2.
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INSTALLATION