• Never connect the main power source to terminal block of communication line.
If connected, electrical parts will be burnt out.
• Introducing with a missing “N” phase or with a mistaken “N” phase will break the equipment.
• When the power supply is applied to “N” phase by mistake, replace inverter PCB and transformer in control box.
Communication and Power Lines
■ Communication cable
- Types : shielded cables
- Use wires of size : over 1.0 ~ 1.5 mm
2
- Maximum allowable temperature of cable : over 60°C (140℉)
- Maximum allowable line length: under 1,000m
■ Remote control cable
- Types : 3-core cable
■ Central control cable
- Please check the model function table for compatibility with central controller.
Product Type Wire Type Diameter
ACP & AC Manager 2-core cables (Shielded)
1.0~1.5mm
2
AC Smart 2-core cables (Shielded)
1.0~1.5mm
2
Simple central controller 4-core cables (Shielded)
1.0~1.5mm
2
AC Ez 4-core cables (Shielded)
1.0~1.5mm
2
■ Separation of communication and power lines
- If communication and power lines are installed alongside each other then there is a strong likelihood of operational faults
developing due to interference in the signal wiring caused by electrostatic and electromagnetic coupling.
The tables below indicates our recommendation as to appropriate spacing of communication and power lines where these
are to be run side by side.
Current capacity of power line Spacing
100V or more
10 A 300 mm
50 A 500 mm
100 A 1,000 mm
Exceed 100 A 1,500 mm
-The figures are based on assumed length of parallel cabling up to 100m. For length in excess of 100m the figures will have
to be recalculated in direct proportion to the additional length of line involved.
- If the power supply waveform continues to exhibit some distortion the recommended spacing in the table should be
increased.
▷ If the lines are laid inside conduits then the following point must also be taken into account when grouping various lines
together for introduction into the conduits
▷ Power lines(including power supply to air conditioner) and signal lines must not be laid inside the same
▷ In the same way, when grouping the lines power and signal lines should not be bunched together.
< ! > CAUTIONS
• If apparatus is not properly earthed then there is always a risk of electric shock, the grounding of the apparatus must be
carried out by a qualified person.
Installation of Outdoor Unit
5. Electrical Wiring
Installation
22
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