LG ZBNQ09GL1A0 Engineering Product Data Book page 399

Installation for Outdoor Unit
6. Field Wiring
**
Outdoor
Power Supply
(Main Switch)
Power Line
■ Wiring of Main Power Supply
• Bear in mind ambient conditions (ambient temperature,direct sunlight, rain liquid,etc.) when proceeding with the wiring and
connections
• 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
(design 60245 IEC57).
• Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply.
< ! > WARNING
• Make sure to use specified wires 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.
• 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 capacity. Using fuse and wire or copper wire with too large
capacity may cause a malfunction of unit or fire.
This figure for system is representative example.
!!
The appearance of the product may vary depending
on the product type, target region, etc.
to Indoor Unit
Power Supply
**
T/B
T/B
: Power Line
: Communication Line
R S T N
R S T
Switch
Switch
Fuse
Fuse
3 Phase 3 Phase
4 Wires 3 Wires
** Power supply speci cations vary depending on the model,
so please refer to the product speci cation table.
Indoor Unit
Communication Line
10
Installation
L N
Switch
Fuse
1 Phase
2 Wires