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6.5.2 Cable clips of main power wire instructions
The attached cable clip includes two parts: the base and upper
cover. The base is installed in the electric control box located under
the terminals. The upper cover is put together with the other acces-
sories as an attachment.
Both the front and back side of the cable clip can be used to groove
wire. Groove the wire according to its size.
The upper cover of the cable clip must be fixed with three M4*30mm
screws.
When the cross section of the power wire is less than 10 mm
groove the power wires as one. When stripping the outermost
insulating layer, keep the sum of the stripped length and terminal
length to less than 70 mm, as shown in Fig.6-8:
When the cross section of the power wire is more than 10 mm
groove the power wires separately. When stripping the outer wire,
ensure the sum of stripped length and terminal length is between
100 mm and 200 mm, as shown in Fig.6-9:
CAUTION
First, connect the power wires and terminals and then groove the
wires, or installation will be hard.
When installing the main power wire, strip of appropriate length of
the insulation layer according to the groove and position of the
cable clip.
When installing the three fixed screws, twisting the length should
ensure displacement is less than 2 mm when applying 100 N force
onto the wire. Twisting it incorrectly will damage the protective
cover of the power wire.
6.6 Control system and Installation
2
,
Fig.6-8
,
2
6.7
Fig.6-9
The control line should be shielded wire. Using other wire
will cause signal interference and faulty operations.
The shielded nets on the two sides of shielded wires are
either grounded to the earth, or connected with each other
and jointed to the sheet metal along to the earth.
The control wire cannot be bound with the refrigerant
pipeline and power wire. When the power wire and control
wire are distributed in parallel, keep the gap between them
above 300 mm to prevent signal interference.
The control wire must not form a closed loop.
Control wire has polarity, so be careful when connecting it.
The shield net should be grounded at the wiring terminal
of the outdoor unit. The inlet and outlet wire net of indoor
communication wire should be connected directly and not
grounded. It should form an open circuit at the shield net
of final indoor unit.
Signal wire of indoor/outdoor units
Signal wire of indoor/outdoor unit adopts 3-core shielded wire
(≥0.75 mm
), which has polarity, so please connect it correctly.
2
Outdoor unit
Outdoor unit
Outdoor unit
(slave unit)
(slave unit)
(master unit)
(P Q E)
(H1 H2 E)
(H1 H2 E)
(H1 H2 E)
Signal wire between outdoor units
The closed end of shield wire
(P Q E)
Signal wire of
indoor/outdoor units
P
(open)
Q
The indoor unit at the terminal of communication system should
parallel-connect to impedance between port P and port Q.
NOTE
Outdoor unit
(slave unit)
(All shield terminals of shield wires
connect to COMM terminal
(H1 H2 E)
Group control
Fig.6-10
Installation manual
)
23
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