21
Installation manual
Please select power supply for indoor unit and outdoor unit
separately.
The power supply should have specified branch circuit with
leakage protector and manual switch.
The power supply, leakage protector and manual of all the
indoor units connecting to the same outdoor unit should be
universal. (Please set all the indoor unit power supply of
one system into the same circuit. It should turn on or shut
down the unit at the same time, otherwise, the service life
would affect seriously, even the unit may not turn on.)
Please put the connective wiring system between indoor
unit and outdoor unit with refrigerant piping system together.
It is suggested to use 3-core shielded wire as signal wire
between indoor and outdoor units, multi-core wire is
unavailable.
Please comply with relevant National Electric Standard.
Power wiring should be done by professional electrician.
CAUTION
6.5 Electric wiring system and installation
Separate Power Supply (without power facility) (See
Table.6-3)
With power facilities
Outdoor unit
power supply
Leakage
protector
Manual
switch
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
GND
GND
GND
GND
Branch box
Leakage
protector
Manual
switch
380-415V 3N~ 50Hz
Fig.6-5
Fig.6-6
NOTE
Select power cord for these five models separately according
to relevant standard. 8HP, 10HP, 12HP, 14HP16HP18HP
The wiring diameter and the length in the table indicate the
condition that the voltage dropping range is within 2%. If the
length exceeds the above figure, please select the wire
diameter according to relevant standard.
Table.6-3
Power
supply
Leakage
protector
Size
(Continuous length
of pipe m)
Capacity
Fuse
Grounding
wire
Model
Item
Min. Power wire diameter (mm
2
)
Wiring of mental and synthetic resin
Manual switch
(A)
8HP
380-415V
3N~ 50Hz
100mA
0.1sec or
less
12HP
4×10 mm
2
(<20 m)
4×16 mm
2
(<50 m)
4×10 mm
2
(<20 m)
4×16 mm
2
(<50 m)
1×10 mm
2
1×10 mm
2
50
40
32
25
Leakage
protector
Manual
switch
GND
Branch box
Outdoor unit
GND
Outdoor unit
GND
Outdoor unit
GND
Outdoor unit
GND
Outdoor unit
GND
Outdoor unit
6.5.1 Outdoor unit power wiring
E
D
Power facilities 1
(with leakage protector)
Power facilities 2
(with leakage protector)
D
Select the wire diameter
Power wiring refer to the main wire (a) connecting to branch
box and the wiring (b) between branch box and power
facilities. Please select the wire diameter according to the
following requirement.
Diameter of main wire (a)
Depends on the total horsepower of outdoor unit and
following table.
E.g In system:(8Hp×1unit+8Hp×1unit+10Hp×1unit)
Total Hp=26Hp→(Table.6-4)→size of wire=35mm
2
(within
50m)
Wiring(b):between branch box and power equipment.
Depends on the number of combined outdoor unit. If fewer
than 5, the diameter is the same as that of main wire (a); if
more than 6, there will be 2 electric control boxes, and the
diameter of wiring depends on the total horsepower of
outdoor units connecting to each electric control box and
following table.
Select wire diameter (≥) (table.6-4) (unit :mm
2
)
14HP
16ǃ18HP
4×16 mm
2
(<20 m)
4×25 mm
2
(<50 m)
1×16mm
2
50
40
4×16 mm
2
(<20 m)
4×25 mm
2
(<50 m)
1×16mm
2
63 50
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