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Instructions of Unit Installation
Electrical Installation
Caution:
Before installing the electrical equipment, please pay attention to the following matters
which have been specially pointed out by our designers:
（1） Check to see if the power supply used conforms to the rated power supply specified on the
nameplate.
（2） The capacity of the power supply must be large enough. The section area of fitting line in the
room shall be larger than 2.5mm
（3） The lines must be installed by professional personnel.
An electricity leakage protection switch and an air switch with gap between electrode heads larger than
3mm shall be installed in the fixed line.
1.
Connection of signal wire
（1） Use wire stripper to strip the insulation layer (25mm long) from the end of the signal wire.
（2） Remove the screw at the terminal board of the air-conditioning unit.
（3） Use pliers to bend the end of the signal wire so that a loop matching the screw size is formed.
（4） Put the screw through the loop of the signal wire and fix the loop at the terminal board.
2.
Connection of multiple twisted wires
（1） Use wire stripper to strip the insulation layer (10mm long) from the end of the multiple twisted
wires.
（2） Remove the screw at the terminal board of the air-conditioning unit.
（3） Use crimping pliers to connect a terminal (matching the size of the screw) at the end of the
multiple twisted wires.
（4） Put the screw through the terminal of the multiple twisted wires and fix the terminal at the
terminal board.
Warning:
If the power supply flexible line or the signal line of the equipment is damaged, only use special
flexible line to replace it.
1.
Before connecting lines, read the voltages of the relevant parts on the nameplate. Then carry
out line connection according to the schematic diagram.
2.
The air-conditioning unit shall have special power supply line which shall be equipped with
electricity leakage switch and air switch, so as to deal with overload conditions.
3.
The air-conditioning unit must have grounding to avoid hazard owing to insulation failure.
4.
All fitting lines must use crimp terminals or single wire. If multiple twisted wires are connected
to terminal board, arc may arise.
5.
All line connections must conform to the schematic diagram of lines. Wrong connection may
cause abnormal operation or damage of the air-conditioning unit.
6.
Do not let any cable contact the refrigerant pipe, the compressor and moving parts such as fan.
7.
Do not change the internal line connections inside the air-conditioning unit. The manufacturer
shall not be liable for any loss or abnormal operation arising from wrong line connections.
Power Cable Connection:
1. Air-conditioning unit with single-phase power supply
（1） Remove the front-side panel of the outdoor unit.
（2） Pass the cable though rubber ring.
（3） Connect the power supply cable to the "L, N" terminals and
the grounding screw on the metal electric box.
2
.
P
P
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