Gree GMV-ND224PH/A-T Manuel D'utilisateur page 29

Fig.19 shows the communication wiring between indoor unit and wire controller.
Minor
wired
controller
(2) The communication wire between indoor unit and outdoor (or indoor) unit
The following table shows the material of communication wire,
between indoor unit and outdoor (or indoor) unit, the
Material Length L(m)
RVV L≤1000
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GMV5 Compact Series VRF Outdoor Unit
IDU No.1
Main
wired
controller
Fig.19 The communication wiring between indoor unit and wire controller
Sectional area
2
(mm )
≥2×0.75
L1
IDU No.1
内机 1
Fig.20 The communication wiring between indoor unit and outdoor unit
IDU No.3
IDU No.2
the length (L) of
sectional area of communication wire.
Standard
If the diameter increases to 2×1mm
GB/T 5023.3-2008 the length (L) should enlarge. But the
length (L) should be less than 1500m.
L2
IDU No.2
内机 2
24
IDU No.n
the communication wire
Remarks
2
,
Ln
IDU No.n
内机 n