LG MULTI V S ARUN060GSS4 Installation Manual page 24

24
2 Ton
PI485 PCB
Indoor communication PCB
Main PCB
Terminal block
(Take care of the phase
Sequence of 1-phase
2-wire power system)
※Pictures may differ depending on the model.
Communication and Power Cables
Communication cable
- Types : shielded wires or unshielded wires
2
- Cross section : 1.0~1.5 mm (1.55 × 10
- Maximum allowable temperature: 60 °C (140 °F)
- Maximum allowable cable length: under 1 000 m (3 281 ft)
Remote control cable
- Types : 3-core cable
Central control cable
Product type Cable type
ACP&AC 2-core cable
Manager (Shielding cable)
2-core cable
AC Smart
(Shielding cable)
Simple central 4-core cable
Controller (Shielding cable)
CAUTION
!
In case of using the shielded wires, it should be grounded.
Separation of communication and power cables
- If communication and power cables 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.
The tables below indicates our recommendation as to appropriate
spacing of communication and power cables where these are to be
run side by side
Current capacity of power cable
10 A
50 A
100 V or more
100 A
Exceed 100 A
(Inside the control box)
(Inside the control box)
-3 -3 2
~ 2.32 × 10 in )
Diameter
2
1.0 ~ 1.5 mm
-3 -3
(1.55 × 10 ~ 2.32 × 10 in
2
1.0 ~ 1.5 mm
-3 -3
(1.55 × 10 ~ 2.32 × 10 in
2
1.0 ~ 1.5 mm
-3 -3
(1.55 × 10 ~ 2.32 × 10 in
Spacing
300 mm (11-13/16 inch)
500 mm (19-11/16 inch)
1 000 mm (39-3/8 inch)
1 500 mm (59-1/16 inch)
NOTE
!
• The figures are based on assumed length of parallel cabling up
to 100m(328ft). For length in excess of 100m(328ft) 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.
Wiring of main power supply and equipment
capacity
- Use a separate power supply for the Outdoor Unit and Indoor Unit.
- Bear in mind ambient conditions (ambient temperature,direct sunlight,
rain water,etc.) when proceeding with the wiring and connections.
- The cable 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%.
2
)
- Specific wiring requirements should adhere to the wiring regulations
of the region.
- Power supply cords of parts of appliances for outdoor use should not
2
)
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.
2
)
WARNING
!
• Follow ordinance of your governmental organization for technical
standard related to electrical equipment, wiring regulations and
guidance of each electric power company.
• Make sure to use specified cables 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
!
• All installation site must 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.