Connection Method And Steps For System Communication - Gree GMV-WQ72WM/A-F Owner's Manual

4.7 Connection Method and Steps for System Communication

4.7.1 Communication connection between IDU and ODU
Install the centralized controller only when it is necessary.
Connect IDU and ODU by terminal D1/D2 of wiring board XT2. Connection graphs of single unit
are shown as follow:
Fig.4.7.1 Connection of communication for single-module system and single-module mode exchanger
Water-cooled Heat Recovery DC Inverter VRF
system.
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