LG ARWB80LA2 Installation Manual page 36

Oil trap application method between outside units
• Because of the possibility of oil being accumulated in the outside unit that has stopped, when there is a height difference
between outside unit pipes or if the pipe distance between the outside units is over 2m, you must always apply an oil trap. (But,
the oil trap between outside units is limited to 1 time and is only applied to the gas pipe.)
• If the pipe distance between the outside units is 2m or below, and if the location of the main pipe is lower than that of the outside
unit and if the location of the main pipe is lower than that of the outside unit, the oil trap does not have to be applied.
• If the location of the main pipe is higher than the location of the outside unit, be careful since the oil can be accumulated in the
stopped outside unit.
• If there is high/low difference between the outside unit pipes, oil can be accumulated to the outside unit on the lower location until
the unit stops.
• When pipe distance between the outside units
is 2m or less
High/Low difference
between the outside units
Location of
main pipe
• When pipe distance between the outside units
exceed 2m
Location of
main pipe
2m or less
Oil trap
Location of
main pipe
2m or less
Over 2m
36 Outside Unit
2m or less
Oil trap
Over 200mm
Over 2m
Oil trap
2m or less
Over 2m
• Example of incorrect installation
Location of main pipe
Oil is accumulated on the
outside unit because it can-
not be poured out from the
bottom of the pipe.
/Low difference
etween outside
unit pipes
Because the oil flow to the right pipe, oil gets accumulated on
the outside unit on the lower side until the outside unit stops.
• Example of correct installation
High/Low difference
between outside
unit pipes
Location of
outside unit
Location of main pipe
Location of
outside unit
Oil trap