Point For Attention Regarding Quality Of The Public Electric Power Supply; Field Wiring - LG ARUN080LTE4 Installation Manual

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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 distri-
bution 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
ARUN080LTE4
ARUN100LTE4
ARUN120LTE4
ARUN140LTE4
ARUN160LTE4
ARUN180LTE4
ARUN200LTE4
(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
(3Ø 4wires)
[Outdoor Unit]
(Main Switch)
R S T N
Switch
Fuse
Indoor
Power supply
(1Ø 2wires)
L N
Power cable
(4 Wires Cable)
Power cable
(2 Wires Cable)
Pull Box Pull Box
(Installer option) (Installer option)
Power cable Power cable
(2 Wires Cable) (2 Wires Cable)
Communication cable
(3 Wires Cable)
[Indoor Units]
WARNING
!
• Indoor Unit ground wires are required for preventing electrical
shock accident during current leakage, Communication disorder by
noise effect and motor current leakage (without connection to
pipe).
• Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase, mo-
mentary blackout or the power goes on and off while the product is
operating, attach a reversed phase protection circuit locally. Run-
ning the product in reversed phase may break the compressor and
other parts.
Voltage range(V)
Frequency
Outdoor
60Hz 380V
50Hz 380-415V 220-240V
Communication cable
(2 Wires Cable)
Pull Box Pull Box
(Installer option) (Installer option)
Power cable Power cable
(2 Wires Cable) (2 Wires Cable)
[Heat Pump]
Between Indoor and Master Outdoor unit
SODU. B SODU. A IDU. B IDU. A CEN. B
Indoor
220V
3 4 3
Series outdoor units
When the power source is connected
In series between the units.
Outdoor
Power supply
(3Ø 4wires)
(Main Switch)
R S T N
Switch
Fuse
Indoor
Power supply
(1Ø 2wires)
L N
Power cable
(4 Wires Cable)
Power cable
(2 Wires Cable)
Pull Box Pull Box
(Installer option) (Installer option)
Power cable Power cable
(2 Wires Cable) (2 Wires Cable)
Communication cable
(3 Wires Cable)
! WARNING
When the total capacity is over than as follow, the power source
do not use in series between the units.
The First terminal block could be burnt out. (Heat Pump : 62 Hp)
Zmax ( ) Minimum Ssc Value (kVA)
-
-
-
-
-
-
-
Master
CEN. A DRY1 DRY2 GND 12V
Outdoor Unit
The GND terminal at the
main PCB is a '-' terminal
4 3 4
for day contact, it is not
the point to make ground
connection.
Frequency
60Hz
50Hz
[Master] [Slave1] [Slave2]
Pull Box Pull Box
(Installer option) (Installer option)
Power cable Power cable
(2 Wires Cable) (2 Wires Cable)
[Indoor Units]
3921
6415
6415
4964
4964
6994
6994
Voltage range(V)
Outdoor Indoor
380V 220V
380-415V 220-240V
[Slave3]
Communication cable
(2 Wires Cable)