Multi-VRF Centralized Controller Operation Manual
2
Fig.1.3 Dimension of Electric Box Cover
1.1 Installation Requirements
(1) Communication cord of the centralized controller must be selected according
to the table below. Never use the cable that is not in compliance with
instructions of this manual.
Network
Cord type
Cord
standard
Cord size
((mm
2
/AWG
))
Total length
L(m/feet)
Remark
Indoor
network
Light/Ordin
ary
polyvinyl
chloride
sheathed
cord.
(60227
IEC 52
/60227 IEC
53)
IEC
60227-
5:2007
2×0.75~
2×1.25
(2×AWG18~
2×AWG16)
L≤1000m
(L≤3280-5/6feet)
If cord size is 2×1mm
2
(2×AWG16),communica
tion cord can be
stretched longer. But the
total length can’t exceed
1500m(4921-1/4feet).
Outdoor
network
L≤250
(L≤820-1/5feet)
Total length of
communication cord
can’t exceed
250m(820-1/5feet).
Notice:
①
The cord shall be Circular cord (the cores shall be twisted together).
②
If unit is installed in places with intense magnetic field or strong interference, it
is necessary to use shielded wire.
(2) Never install the centralized controller in the following places:
1) Places with corrosive gas or serious dust, salt mist or oil smoke.
2) Wet and damp places, with direct sunlight.
3) Places near high temperature objects or places where units might be
splashed by water.
