Multi Variable Air Conditioners Duct Type Indoor Unit
6
Material type
communication line
between indoor unit
and wired controller L
Wire size
(mm
2
/AWG)
Material
Standard
Remarks
Light/Ordinary
polyvinyl chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤250m
(L≤820-1/5feet)
2×0.75~2×1.25
(2×AWG18
~2×AWG16)
IEC 60227-
5:2007
(1) Total length of communication
line can't exceed 250m (820-
1/5feet).
(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
3.3.2 Select Communication Line for Indoor Unit and Outdoor Unit
Fig 3.3
Material Type
of Communication
Cable between Indoor
Unit and Indoor
Wire size
(mm
2
/AWG)
Material
Standard
Remarks
Light/Ordinary
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤1000m
(L≤3280-5/6feet)
≥2×0.75
(≥2×AWG18)
IEC 60227-
5:2007
(1) If the wire diameter is
enlarged to 2×1 mm
2
(2×AWG16), the total
communication line length can
reach 1500 m (4921-1/4feet).
(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