Installation

ConnectionofTheCable

1.Remove the cover control from the unit by loosening the 3 screws.

2.Dismount caps on the conduit panel.

3.Temporarily mount the conduit tubes on the conduit panel.

4.Properly connect both the power sup- ply and low voltage lines to the corre- sponding terminals on the terminal block.

5.Ground the unit in accordance with local codes.

6.Be sure to size each wire allowing sev- eral inches longer than the required length for wiring.

7.Use lock nuts to secure the conduit tubes.

NOTICE

Connector trade size for this unit is 1/2" for instructions on connecting depending on the wire type you are using.

Wiring Diagram

Connecting cable(Low voltage) b

Indoor Unit

Outdoor Unit

Terminal

Terminal

(4P)

(6P)

11

22

3

3

Power supply

a

 

 

44

L1* 5

L2 6

GTo branch circuit

Ground

*L1 is neutral for 115V models.

NOTICE

1.shows field wiring.

2.Separately wire the high and low voltage line.

3.Use heat-proof electrical wiring capable of withstanding temperatures up to 167°F.

4.Use outdoor and waterproof connection cable rated more than 300V for the connection between indoor and outdoor unit.

(For example, Type STOW)

Outdoor unit

Terminal block

Be sure to comply with local codes while running the wire from the indoor unit to the outdoor unit(size of wire and wiring method, etc).

Every wire must be connected firmly.

No wire should be allowed to touch refrig- erant tubing, the compressor or any mov- ing parts.

Over 5mm (0.2")

Cover control

Conduit panel

Connecting cable

Power supply cord

Power Supply

Model

Power source

AWG(MIN.)

Fuse or breaker

 

 

Capacity

 

 

 

 

12k

1ø , 115V

14

18

20A

 

 

 

 

 

Service Manual 25

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LG Electronics LAN121CNM, LAU121CNM, LA121HPMI service manual Connection of The Cable, Wiring Diagram

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