LG LSN181HSV5 Installation Manual page 52

WIRING
Figure 85: Indoor Unit to Outdoor Unit / Branch Distribution Unit Terminal Connections—LSN090HSV5, LSN120HSV5 and LSN181HSV5.
Indoor Unit Terminal Block
GND
1(L1 ) 2(L2)
52
Branch Distribution Unit Terminal Block or
Outdoor Unit Terminal Block
BDU:
3
ODU:
Due to our policy of continuous product innovation, some specifications may change without notification.
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S N L
3 or S
GND
F
MULTI
F
MULTI MAX