Wiring Of Main Power Supply And Equipment Capacity; Point For Attention Regarding Quality Of The Public Electric Power Supply; Field Wiring - LG MULTI V 5 ARUM160LTE5 Installation Manual

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 %.
- 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.
Outdoor unit Current(max)
ARUM080LTE5 18.2
ARUM100LTE5 25.1
ARUM120LTE5 25.5
ARUM140LTE5 26.9
ARUM160LTE5 27.3
ARUM180LTE5 45.5
ARUM200LTE5 47.3
ARUM220LTE5 48
ARUM240LTE5 23.6
ARUM260LTE5 54.5
The thickness of Minimum wire (mm
Main power
Branch wire Ground wire
wire
2.5~16
-3
1 Unit [3.875 × 10
-2
~2.48 × 10 ]
16~50
-2
2 Unit [2.48 × 10
-2
~7.75 × 10 ]
50~95
-2
3 Unit [7.75 × 10
-1
~1.4725 × 10 ]
95~120
-1
4 Unit [1.4725 × 10
-1
~1.86 × 10 ]
Ground wire
1
The power wire Between the master outdoor unit and slave1
outdoor unit - minimum : 6 mm
2
The power wire Between the slave1 outdoor unit and slave2
outdoor unit - minimum : 4 mm
3
The power wire Between the slave2 outdoor unit and slave3
outdoor unit - minimum : 2.5 mm
h The above standard is CV wire standard.
h Please use the 3-phases 4-wires quadrupole Leakage circuit breaker
of circuit breaker.
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
external 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.
Minimum cross-sectional area of power
supply (mm^2)
2.5
4
4
4
4
10
10
10
10
10
2 2
[ inch ])
Leakage
circuit breaker
(4P ELCB)
2.5~4 Below 20~60 A
-3
- [3.875 × 10 100 mA
-3
~6.2 × 10 ] 0.1 seconds
4~10 Below 75~150 A
-3
- [6.2 × 10 100 mA
-2
~1.55 × 10 ] 0.1 seconds
Below 150~200 A
10
- 100 mA
-2
[1.55 × 10 ]
0.1 seconds
10~16 Below 200~250 A
-2
- [1.55 × 10 100 mA
-2
~2.48 × 10 ] 0.1 seconds
2 -3 2
[9.3 × 10 inch ]
2 -3 2
[6.2 × 10 inch ]
2 -3 2
[3.875 × 10 inch ]
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
capacity. Using fuse and wire or copper wire with too large capacity
may cause a malfunction of unit or fire.
Point for attention regarding quality of the
public electric power supply
This equipment complies with respectively:
- EN/IEC 61000-3-11 (1) provided that the system impedance Zsys is
less than or equal to Zmax and
- EN/IEC 61000-3-12 (2) provided that the short-circuit power Ssc is
greater than or equal to the minimum Ssc alue at the interface point
between the user's supply and the public system. It is the
responsibility of the installer or user of the equipment to ensure, by
consultation with the distribution network operator if necessary, that
the equipment is connected only to a supply with respectively:
- Zsys less than or equal to Zmax and
- Ssc greater than or equal to the minimum Ssc value.
Standard combination of
outdoor units
ARUM080LTE5
ARUM100LTE5
ARUM120LTE5
ARUM140LTE5
ARUM160LTE5
ARUM180LTE5
ARUM200LTE5
ARUM220LTE5
ARUM240LTE5
ARUM260LTE5
(1) European / International Technical Standard setting the limits for
voltage changes, voltage fluctuations and flicker in public low-
voltage supply systems for equipment with rated current ≤75 A.
(2) European / International Technical Standard setting the limits for
harmonic currents produced by equipment connected to public low-
voltage systems with input current >16 A and ≤75 A per phase.

Field Wiring

Single outdoor unit
Outdoor
Power supply
(3 Ø 4wires)
[Outdoor Unit]
(Main Switch)
R S T N
Switch
Fuse
Indoor
Power supply
(1 Ø 2wires)
L N
Power Line
(4 Wires Cable)
Power Line
(2 Wires Cable)
Pull Box Pull Box Pull Box
(Installer option) (Installer option) (Installer option)
HR unit
Power Line Power Line
(2 Wires Cable) (2 Wires Cable)
In case of Heat
Recovery System
Minimum Ssc Value
Zmax (Ω)
(kVA)
- 2776
- 3828
- 3828
- 6339
- 6339
- 6339
- 6339
- 6339
- 8144
- 8144
Voltage range(V)
Frequency
Outdoor Indoor
60 Hz 380 V 220 V
50 Hz 380-415 V 220-240 V
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line Power Line
(2 Wires Cable) (2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
35