LG THERMA V Installation Manual page 41

1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 41
Electrical Wiring
Two kind of cables should be connected to the outdoor unit : One is 'Power cable', the other one is
'Connecting cable'. Power cable is a cable which is used to supply external electricity to the outdoor unit.
This cable is generally connected between external power source (such as main electric power distribution
panel of user's house) and the outdoor unit. Connecting cable is, on the other hand, used to connect
between the outdoor unit and the indoor unit to supply electric power to the indoor unit and to establish the
communication between the outdoor unit and the indoor unit.
Procedure for wiring to the outdoor unit is four steps. Before starting wiring, check if wire specification is
suitable and read following directions and cautions VERY carefully.
The power cord connected to the outdoor unit should be complied
withIEC 60245 or HD 22.4 S4 (This equipment shall be provided with a
cord set complying with the national regulation.
1 Phase(Ø)
3 Phase(Ø)
If the supply cord is damaged, it must be replaced by a special cord or assembly availible from the manufacturer of its service agent.
Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal block.
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 wiring which is the same thickness, do as shown in the figure below.
W
ARNING:
Make sure that the screws of the terminal are free from looseness.
CAUTION
NORMAL CROSS-SECTIONAL AREA
Model Phase (Ø) Area (mm 2 )
AHUW056A3
AHUW076A3 4
AHUW096A3
1
AHUW126A3
AHUW146A3 6
AHUW166A3
AHUW128A3
AHUW148A3 3 2.5
AHUW168A3
Round pressure terminal
Piping and Wiring for Outdoor Unit
The connecting cable connected to the outdoor unit should be
complied with IEC 60245 or HD 22.4 S4 (This equipment shall be
provided with a cord set complying with the national regulation.)
NORMAL
CROSS-SECTIONAL
AREA 0.75mm
When the connection line between the indoor unit and
outdooor unit is over 40m, connect the telecommunication
line and power line separately.
Power wire
2
Installation Manual 41