Gree GMV-280WM/G-X User Manual

GMV DC Inverter VRF
44
3.9.2 Communication Material Selection
NOTE!
If the air conditioning unit is installed in a place with strong electromagnetic interference, the
communication line between the indoor unit and the wired controller must adopts shielded wires; the
communication line between indoor units (between indoor unit and outdoor unit) must use the shielded
twisted pairs.
(1) Selection of communication line between indoor unit and wired controller.
Wire type
Total length of
communication
wire between
indoor unit and
wired controller
L(m)
Wire diameter
(mm
2
)
Wire standard Remark
Light / ordinary PVC
sheathed twisted copper
core cord
L≤250 2×0.75~2×1.25 IEC 60227-5:2007
The length of
communication line can’t
exceed 250m.
Shielded light/ordinary PVC
sheathed twisted copper
core cord
L≤250 2×0.75~2×1.25 IEC 60227-5:2007
When the installation
environment of the unit is in
strong magnetic or strong
interference, the shielded
wires shall be used.
The connection between the indoor unit and the wired controller is shown as below:
Fig.3.9.2
(2) Selection of communication line between outdoor unit and indoor unit.
Wire type
Length of communication wire
between indoor unit and
another indoor/outdoor unit(m)
Wire
diameter
(mm
2
)
Wire standard Remark
Light / ordinary PVC
sheathed twisted
copper core cord
L≤1000
≥2×0.75 IEC 60227-5:2007
If the wire diameter is
increased to 2×1mm
2
, the
length of communication
line can’t be increased,
while the length of the
communication line can’
t be
more than 1500m.
Shielded
light/ordinary PVC
sheathed twisted
copper core cord
L≤1000
≥2×0.75 IEC 60227-5:2007
When the installation
environment of the unit is in
strong magnetic or strong
interference, the shielded
wires shall be used.

Gree GMV-280WM/G-X Specifications

General

Brand	Gree
Model	GMV-280WM/G-X
Category	Inverter
Language	English