LG ARUN50GS2A Quick Manual page 20

20
Communication and Power Cables
Communication cable
- Types : shielding wire
2
- Cross section : 1.0 ~ 1.5 mm
- Insulation material : PVC
- Maximum allowable temperature: 60°C
- Maximum allowable line length: under 300m
Remote control cable
- Types : 3-core cable
Central control cable
- Types : 4-core cable (Shielding wire)
- Cross section : over 1.0~1.5 mm
- Insulation material : PVC
Separation of communication and power cables
- If communication and power lines are run alongside each other then
there is a strong likelihood of operational faults developing due to in-
terference in the signal wiring caused by electrostatic and electro-
magnetic coupling.
In case of install communication and power line together, the dis-
tance should be over 50mm
Distance from power of other facility
Current capacity of power line
100V or more
Exceed 100A
NOTE
!
• 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
cable involved.
• If the power supply waveform continues to exhibit some distor-
tion the recommended spacing in the table should be increased.
- If the cable are laid inside conduits then the following point
must also be taken into account when grouping various cable
together for introduction into the conduits
- Power cable(including power supply to air conditioner) and
communication cables must not be laid inside the same
- In the same way, when grouping the power wires and com-
munication cables should not be bunched together.
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.
2
Spacing
10A 300mm
50A 500mm
100A 1000mm
1500mm
Wiring of main power supply and equipment
capacity
Outdoor unit (1Ø, 220~240V, 50Hz/ 1Ø, 220V, 60Hz/ 3Ø, 380~415V,
50Hz/ 3Ø, 380V, 60Hz)
Indoor unit (1Ø,220V, 50/60Hz)
- Separate power supply lines for the indoor units from outdoor unit.
- Bear in mind ambient conditions (ambient temperature,direct sun-
light, rain water,etc.) when proceeding with the wiring and connec-
tions.
- The wire size is the minimum value for metal conduit wiring. The
power cord size should be 1 rank thicker taking into account the line
voltage drops. Make sure the power-supply voltage does not drop
more than 10%.
- Specific wiring requirements should adhere to the wiring regulations
of the region.
- Power supply cords of parts of appliances for outdoor use should not
be lighter than polychloroprene sheathed flexible cord.
- Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
WARNING
!
• Follow ordinance of your governmental organization for techni-
cal standard related to electrical equipment, wiring regulations
and guidance of each electric power company.
• Make sure to use specified wires for connections so that no ex-
ternal force is imparted to terminal connections. If connections
are not fixed firmly, it may cause heating or fire.
• Make sure to use the appropriate type of overcurrent protection
switch. Note that generated overcurrent may include some
amount of direct current.
CAUTION
!
• Some installation site may require attachment of an earth leakage
breaker. If no earth leakage breaker is installed, it may cause an
electric shock.
• Do not use anything other than breaker and fuse with correct ca-
pacity. Using fuse and wire or copper wire with too large capacity
may cause a malfunction of unit or fire.
Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal
block.
Round pressure terminal
When none are available, follow the instructions below.
- Do not connect wiring of different thicknesses to the power terminal
block. (Slack in the power wiring may cause abnormal heat.)
- When connecting cable which is the same thickness, do as shown in
the figure below.
- For wiring, use the designated power cable and connect firmly, then
secure to prevent outside pressure being exerted on the terminal
block.
- Use an appropriate screwdriver for tightening the terinal screws. A
screwdriver with a small head will strip the head and make proper
tighterning impossible.
- Over-tightening the terminal screws may break them.
Power cable