Gree GMV-450WM/B-X - Page 40

D.C. Inverter Multi VRF Modular
37
Fig.40
4.6.2 Communication mode of GMV5 Modular DC Inverter Units
CAN bus mode is taken for communication between IDU and ODU and communication
among IDUs.
4.6.3 Selection and connection mode of GMV5 communication material
4.6.3.1 Select communication material
Note: if air conditioners are installed at places where there’s strong electromagnetic
interference, the communication wire of IDU and wired controller must use shielded wire and the
communication wire between IDU and IDU/ODU must use shielded twisted pair.
(1) Select communication wire between IDU and wired controller
Material type
Total length of
communication line
between IDU unit
and wired controller L
(m)
Wire size
(mm
2
)
Material
standard
Remarks