Select Communication Line For Indoor Unit And Outdoor Unit - Lennox VRF VEAH024N432P Installation & Operation Instructions

Total length of
communication wire between
Wire type
indoor unit and wired
controller (m/feet)
Light/Ordinary
polyvinyl
chloride
sheathed
cord. (60227
IEC 52/60227
IEC 53)

3.3.2 Select communication line for indoor unit and outdoor unit

communication wire
between indoor unit and
Wire type
indoor unit(outdoor unit)
(communication
line for indoor
unit)
Light/Ordinary
polyvinyl chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
(communication
line for outdoor
unit)
Light/Ordinary
polyvinyl chloride
sheathed cord.
(60245 IEC 57)
Wire diameter
(
2×0.75~2×1. 5
L≤250(850)
(2×18~2×16)
Total length of
Wire diameter
(
mm
(m/feet)
L≤1000(3280) ≥2×0.75(2×18)
L≤1000(3280) ≥2×0.75(2×18)
Lennox VRF Air Handler Indoor Unit
Wire standard
2
/AWG)
mm
IEC 60227-5
Fig 3.3.2
Wire standard
2
/AWG)
IEC 60227-5
IEC 60227-5 /
IEC 60245-1
7
Remark
1. Total length of
communication cable can't
exceed 250m (850feet).
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.
Remark
1. If the wire diameter is
enlarged to 18AWG, the total
communication cable length
can reach 1500m (4920
feet).
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.