Requirements For Communication Line - Gree GMV-ND07T/B-T Owner's Manual

Multi Variable Air Conditioners Compact Cassette Type Indoor Unit
GMV-ND07~18T/B-T(U)
(1) The unit shall be installed in accordance with national standards or local regulations.
(2) Only qualified personnel can carry out installation work, please contact with local dealer before
installation.
(3) Make sure all the installation work completed before energizing.

3.3 Requirements for Communication Line

If air conditioner used under strong electronic-magnetic interference circumstance, STP
(shielded twisted pair) communication cable must be adopted.
3.3.1 Select Communication Line for Indoor Unit and Wired Controller
communication
Material type
indoor unit and
wired controller L
Light/Ordinary
polyvinyl
chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
3.3.2 Selection of Communication Wire between Indoor Unit and Indoor Unit (or Outdoor
Unit)
Model
Total length of
line between Wire size
(mm
(m/ft.)
L≤250
(L≤820-3/16)
(2×AWG18
~2×AWG16)
Fig.3.3.1
Material
2
/AWG) standard
2×0.75
~2×1.25 IEC
60227-5
Fig.3.3.2
4
Unit: mm (inch)
H
255(10)
Remarks
1. Total length of communication
line can't exceed 250m (820ft).
2. The cord shall be Circular cord
(The cores shall be twisted
together).
3. If unit is installed in places with
intense magnetic field or
strong interference, it is
necessary to use shielded
wire.