Delta 21CK018C24 Instruction Manual page 57

I. Power Cable Connection
Caution:
Before installing the electrical equipment, please pay attention to the following
matters which have been specially pointed out by our designers:
（1） Check that if the power supply used conforms to the rated power supply specified on the
nameplate.
The capacity of the power supply must be large enough. The section area of fitting line in
（2）
the room shall be larger than 2.5 mm
（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 3 mm shall be installed in the fixed line.
1.Connection of single wire
（1） Use wire stripper to strip the insulation layer (25mm long) from the end of the single wire.
（2） Remove the screw at the terminal board of the air-conditioning unit.
（3） User pliers to bend the end of the single wire so that a loop matching the screw size is
formed.
（4） Put the screw through the loop of the single 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.
Put the screw through the terminal of the multiple twisted wires and fix the terminal at the
（4）
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.
2
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