Communication Cable Selection For Idus/Hydro Box And Wired Controller; Communication Cable Selection For Odu And Idus/Hydro Box - Gree GMV-S120WL/A-S Service Manual

between the IDU and ODU.

(1) Communication cable selection for IDUs/hydro box and wired controller

Wire type
and wired controller
Common sheath
twisted pair copper
core (RVVS)
Common shielded
sheath twisted pair
copper core
(RVVSP)
Connection between IDU and wired controller is shown as below:
Connection between hydro box and wired controller is shown as below:

(2) Communication cable selection for ODU and IDUs/hydro box

Type of wire
Light/Ordinary PVC
sheathed twisted-pair
copper core wire
(RVVS)
Shielded light/ordinary
PVC sheathed
twisted-pair copper
core wire (RVVSP)
GMV5 Home DC Inverter Multi VRF Units
Total length of
communication Number of wire
cables of the IDU pieces x wire
diameter (mm
L(m)
L≤250
L≤250
Total length of
communication wire
between indoor unit and
another indoor unit
(outdoor unit): L(m)
L≤1000
L≤1000
Wire standard
2
)
GB/T
≥2×0.75
5023.5-2008
GB/T
≥2×0.75
5023.5-2008
Wire size Material
2
(mm ) standard
IEC
≥2×0.75
60227-5:2007
IEC
≥2×0.75
60227-5:2007
183
Remark
The overall
communication length
cannot exceed 250m.
If the unit is installed in
places with strong
electromagnetic
interference, shielded wire
must be used (RVVSP).
Remarks
If wire size is enlarged to
2
2×1mm , communication
wire could be longer, but the
total length shall not exceed
1500m.
If unit is installed in a place
with intense magnetic field or
strong interference, it's
necessary to use shielded
wire (RVVSP).