LG ARUN038GS2 Installation Manual page 23

When connecting the pipes from the front of the outdoor unit, remove part
and part .
When connecting the pipes from the side of the outdoor unit, remove part
(the whole "Knock out" part).
WARNING
After installing the pipe, clog the pipe excavation inlet of the front panel and the side panel
(Wire may be damaged due to entering of rats, animals, etc).
Refrigerant piping installation
(Front)
Installation Manual 23