GMV DC Inverter VRF
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Fig.3.9.6
3.9.4 Communication Address Setting
The indoor unit and outdoor unit adopt automatic addressing technology. It is not necessary to
manually set the address code. It only needs to set the main module and centralized control address
(set it when centralized control of multiple refrigeration systems is required)
3.9.5 Communication Connection between IDU and ODU
Communication between IDU and ODU is connected through the D1/D2 port of the
communication terminal block.
Central control communication among multiple multi VRF system is connected through G1 and
G2 ports on the communication terminal block of main module.
Below are the connection graphics of single unit and modular units:
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