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Electrical Wiring
Electrical construction should be made with specific main circuit by qualified personnel according to
the installation instructions. Electric shock and fire may be caused if the power supply capacity is not
sufficient.
While arranging the wiring layout, specified cables should be used as the main line, as per the local
regulations on wiring. Connecting and fastening should be performed reliably to avoid the external
force of cables from transmitting onto the terminals. Improper connection or hastiness may lead to
burning or fire accidents.
There must be proper earthing according to the criteria. Unreliable earthing may cause electrical
shocks. Do not connect the earthing line to the gas pipe, water pipe, lightening rod, or telephone line.
Only copper wire can be used. Breaker for electric leakage should be provided, or electric shocks may
occur.
The wiring of the mains line is of Y type. The power plug L should be connected to the live wire and
plug N connected to null wire while
auxiliary electrically heating function, the live wire and the null wire should not be misconnected, or the
surface of the electrical heating body will be electrified. If the power line is damaged, have it replaced
by professional personnel from the manufacturer or service centre.
The power line of indoor units should be arranged according to the installation instruction of indoor
units.
The electrical wiring should be out of contact with the high-temperature sections of tubing as to avoid
melting the insulating layer of cables, which may cause accidents.
After connected to the terminal tier, the tubing should be curved into be a U-type elbow and fastened
with the pressing clip.
Controller wiring and refrigerant tubing can be arranged and fixed together.
The machine can't be powered on before electrical operation. Maintenance should be done while the
power is shut down.
Seal the thread hole with heat insulating materials to avoid condensation.
Signal line and power line are independent; they can't share a single line. [Note: the power line and
signal line are provided by users. Parameters for power lines are shown as below: 3x(1.0-1.5) mm
parameters for signal line: 2x(0.75-1.25)mm
5 butt lines (1.5mm) are equipped in the machine before delivery, which are used in connection
between the valve box and the electrical system of the machine. The detailed connection is displayed
in the circuit diagram.
Supply Wiring Drawing
Indoor units and outdoor units should be connected to the power source separately. Indoor units must
share one single electrical source, but its capacity and specifications should be calculated. Indoor &
outdoor units should be equipped with the power leakage breaker and the overflow breaker.
Warning
Attention
should be connected to the ground wire. For the type with
2
( shielded line)]
Main Unit of Outdoor
Unit
Breaker for
Electricity Leakage
Overflow Breaker
Supply:3N~380-415V,50/60Hz
Indoor Unit 1 wall mounted type
Breaker for
Electricity Leakage
Overflow Breaker
Supply:1 PH,220-240V~,50/60Hz
17
Sub Unit 1 of Outdoor
Unit
Breaker for
Electricity Leakage
Overflow Breaker
Supply: 3N~,380-415V,50/60Hz
Indoor Unit 2 wall mounted type
Breaker for
Electricity Leakage
Overflow Breaker
Supply:1 PH,220-240V~,50/60Hz
2
;
Sub Unit 2 of Outdoor
Unit
Breaker for
Electricity Leakage
Overflow Breaker
Supply: 3N~,380-415V,50/60Hz
Indoor Unit 2
except wall mounted type
Breaker for
Electricity Leakage
Overflow Breaker
Supply:1 PH,220-240V~,50/60Hz
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