LG ARUN096BT2 Installation Manual page 34

Refrigerant piping installation
Connection between outdoor and outdoor unit
Example of Pipe Connection between Outdoor
1. Pipe Connection between Outdoors
CAUTION
Apply oil trap between outdoor unit installed Higher level and outdoor unit installed lower level.
Oil may be accumulated in stopped outdoor unit.
2. In case pipe length between outdoors is less than 2m(6.6ft)
34 Outdoor Unit
h1
Less than 10m(32.8ft)
Less than 2m(6.6ft)
Differnce in height between outdoor units
Less than 5m(16ft)( h1 5m(16ft)).
Longest Pipe Length between Outdoors
Less than 10m(32.8ft), after 1st branch.