Gree GMV-S280W/A-X

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