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3.5 Electrics installation requirements
1. For the first installation
1) If the users' electrical environ ment has serious risks, the installer should refuse
to install, and explain the reasons. lnstall after removing the risks.
2) The power supply voltage must be within the range of 10%. If not, some rectification
measures should be taken.
3) The line should be equipped with a leakage protector and a master switch. Forbid to exchange the
fuse with copper wire or others. To select the correct fuse, it should base on 1.5 to 3 times of the
maximum power of the air conditioner (connected to the line) and add the sum of the maximum
current from other electrics.
4) The user's power lines should have grounding wire, if no grounding wire, installer should refuse to
install, and explain the reasons.
5) The power supply to air conditioner must use the specified branch line. Power delivery must meet
the following requirements:
Table for Wire Cross-sectional Area (Diameter) and Switch (Socket) and Fuse Size and Load
Current Comparison
The specified power delivery device and wires for air conditioner
Wire cross-sectional
The maximum
area(mm square)
current(A)
�10
�16
1.5 or 2.5
�25
�32
Note: The maximum current of air conditioner is the maximum output current value written on the
nameplate of outdoor unit. The maximum current of lines is the maximum current of the air conditioner plus
the maximum current from other electrics.
2.During installation construction
1) The connecting power cable between indoor and outdoor units (including high voltage signal wire)
must use chloroprene rubber cable, forbid to use PVC cable.
Forbid to lengthen or eut short the cable. For the excess power cable, it should be roundly collated,
forbid to twine it to small circles.
2) Grounding wire should use the yellow/green wire, and has sufficient diameter.
Forbid connecting grounding wire to running water pipe or gas pipe or power lines or lightning line.
3) For wiring, you must refer to the wiring diagram pasted on the unit, and make sure the parts are
correct and then to connect.
4) For wiring, each wire end must press the U-type terminal as required before it is connected to the
terminal blocks. The U-type terminal must firmly connect to the wire.
3.Preparation before installation
Socket or switch/
fuse nominal
specification (A)
1 or 1.5
16/16
32/25
2.5 or 4
63/50
4 or 6
63/50
Power delivery device and wires for power bus
The maximum
Wire cross-sectional �Switch/fuse normal
current of lines
area(mm square)
(1.5-3)(A)
�16
�25
�32
�40
�63
7
Table 3.3
specification (A)
1.5-4
32/25
2.5-4
63/50
63/50
4-10
6-16
100/80
10-25
125/125
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