40
Outdoor Unit
Electrical Wiring
2. Communication and Power Lines
1) Communication cable
• Types : shielding wire
• Cross section : over 1.0~1.5mm
2
• Insulation material : PVC
• Maximum allowable temperature: 60°C
• Maximum allowable line length: 300m
2) Remote control cable
• Types : 3-core cable
3) Central control cable
• Types : 4-core cable (Shielding wire)
• Cross section : over 1.0~1.5mm
2
• Insulation material : PVC
4) Separation of communication and power lines
• If communication and power lines are run 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.
In case of install communication and power line together, the distance should be over 50mm
Distance from power of other facility
Note:
1. 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.
2. 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.
Current capacity of power line
Spacing
10A
300mm
50A
500mm
100A
1000mm
Exceed 100A
1500mm
100V or more
CAUTION
• If apparatus is not properly earthed then there is always a risk of electric shocks, the earthing of the
apparatus must be carried out by a qualified person.
• Use a power wire pipe for the power wiring.
Summary of Contents for ARUN50LH2A
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