Gree GMV-224WM/B-X Owner's Manual page 35

(2) All communication wires of GMV5 are connected by screws.
Connection screw
(3) If a single communication wire is not long enough and needs to be connected, the connected
joint must be welded or pressure-welded. Do not simply twist the wires together.
4.6.4 Communication address
Auto addressing technology is adopted for GMV5 IDU and ODU. No need to set address codes
manually. Only the addresses of master unit and central control are needed to be set (address of
central control is only needed when there are multiple refrigeration systems).
Note: When installing remote monitor or central controller, displacement on indoor units' project
codes must be made. Otherwise, there will be collision malfunction of the project codes. For detail
operation methods, please refer to the GMV5 Installation and Maintenance Manual.
ODU1 ODU2 ODU3
LO1 LO2
Li1 Li2
IDU1
ODU1 ODU2 ODU3
LO1 LO2
Li1 Li2
IDU1
Li2
IDU1
Terminal Board
D.C. Inverter Multi-variable Modular
ODU4
LO3
Lin
IDU2 IDUn
Fig.41
ODU4
LO3
Lin
IDU2 IDUn
Lin
IDU2 IDUn
Fig.42
Fig.43
32
Wrong
Wrong