Gree GMV-680WM/E-X Manuel D'utilisateur page 42

GMV DC Inverter VRF
4.6.2 Communication mode 8
CAN bus mode is taken for communication between IDU and ODU and communication
among IDUs.
4.6.3 Selection and connection mode of 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
Total length of
communication line
Material type
between IDU unit and
wired controller L (m)
Light/Ordinary
polyvinyl chloride
L≤250
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.
Fig. 4.6.1
Wire size Material
2
(mm ) standard
1. Total length of communication line can't
exceed 250m.
IEC 2. The cord shall be Circular cord (the cores
2×0.75~2
60227-5:200 shall be twisted together).
×1.25
7 3. If unit is installed in places with intense
magnetic field or strong interference, it is
necessary to use shielded wire.
39
Remarks