Gree GMV-680WM/E-X Manuel D'utilisateur page 43

Graphic of connection between IDU and wired controller
(2) Select communication wire between ODU and IDU
Total Length L(m) of
Communication Cable
Material Type
between IDU Unit and
IDU (ODU ) Unit
Light/Ordinary
polyvinyl chloride
L≤1000
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
4.6.3.2 Connection mode of communication
(1) All communication wires of GMV5E must be connected in series rather than in star.
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Fig. 4.6.2
Wire size Material
2
(mm ) Standard
1. If the wire diameter is enlarged to 2 × 1
mm
reach 1500m.
IEC 2. The cord shall be Circular cord (the
≥2×0.75
60227-5:2007 cores shall be twisted together).
3. If unit is installed in places with intense
magnetic field or strong interference, it is
necessary to use shielded wire.
Fig. 4.6.3
Fig. 4.6.4
40
GMV DC Inverter VRF
Remarks
2
, the total communication length can