Multi Variable Air Conditioners Cassette Type Indoor Unit
6
Wire type
Total length of
communication wire between
indoor unit and wired
controller (m)
Wire diameter
(mm
2
)
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
1. Total length of
communication cable
can't exceed 250m.
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.
3.3.2 Selection of communication wire between indoor unit and indoor unit (or outdoor
unit)
Indoor Unit 1
Indoor Unit 2
Indoor Unit n
Outdoor
unit1
Outdoor
unit 2
Outdoor
unit 3
Outdoor
unit 4
LO1
L=LO1+LO2+LO3+Li1+Li2+.......+Lin(n
≤
80)
LO2
LO3
Lin
Fig 3.3.2
Wire type
Total length of
communication wire between
indoor unit and indoor
unit(outdoor unit) (m)
Wire diameter
(mm
2
)
Wire standard
Remark
Light/Ordinary
polyvinyl chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤1000
≥2×0.75
IEC 60227-
5:2007
1. If the wire diameter is
enlarged to 2 × 1 mm2, the
total communication cable
length can reach 1500 m.
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.
3.4 Wiring Requirement
(1) Dimension of power cord and capacity of air switch
Model
Power Cord Size
Air Switch Capacity
Minimum Sectional
Area of Ground
Wire
Minimum
Sectional Area of
Power Cord
