Multi Variable Air Conditioners Two-way Cassette Type Indoor Unit
7
3.3 Requirements of Communication Wire Selection
NOTE:
If air conditioner used under strong electronic-magnetic interference circumstance, STP
(shielded twisted pair) communication cable must be adopted.
3.3.1 Selection of communication wire between indoor unit and wired controller
Fig.3.3.1
Wire type
Total length of
communication wire
between indoor unit and
Wire diameter
(mm²)
Wire standard Remark
Light/Ordinary
polyvinyl chloride
sheathed cord
(60227 IEC 52
/60227 IEC 53).
L≤250 2×0.75~2×1.25
IEC 60227-
5:2007
Total length of communication
cable can't exceed 250m.
The cord shall be Circular cord
(the cores shall be twisted
together).
If unit is installed in places with
intense magnetic field or strong
interference, it is necessary to
3.3.2 Selection of Communication Wire between Indoor Unit and Indoor Unit (or outdoor
unit)
Fig.3.3.2
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