Gree GMV-ND224PH/A-T Manuel D'utilisateur page 28

3、If the units were placed at a place with stronger electromagnetism, the communication wire between indoor
unit and wire controller should use screen wire for shielding the electromagnetism, and the communication
wire between indoor unit and outdoor (or indoor) unit should use STP for shielding the electromagnetism.
IDU No.1
4.7.2 Choice of the Material of Communication Wire
Note: If the units were placed at a place with stronger electromagnetism, the communication wire between
indoor unit and wire controller should use screen wire for shielding the electromagnetism, and the communication
wire between indoor unit and outdoor (or indoor) unit should use STP for shielding the electromagnetism.
(1) The communication wire between indoor unit and wire controller
The following table shows the material of communication wire,
between indoor unit and wire controller, the
Material
RVV
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GMV5 Compact Series VRF Outdoor Unit
Outdoor unit
Communication with IDUS
IDU No.2
Fig.18 Communication wiring
sectional area
Length L(m) sectional area
L≤250
IDU No.n(16max)
Wired controller
the length (L) of
of communication wire.
2
(mm ) Standard
≥2×0.75 GB/T 5023.3-2008
23
the communication wire
Remarks
L≤250m