LG multi V ARUB160BT3 Instruction Manual page 42

Refrigerant piping system
• The pipes between the outdoor units must maintain horizontal levelness or give an inclination to prevent a back flow toward
the slave outdoor unit. Otherwise, the unit may not operate properly.
(Example 1)
Toward indoor unit
(Example 2)
Toward indoor unit
(Example 3)
Toward indoor unit
• Apply Oil Trap as shown below when the length of the pipe between the outdoor units is more than 2m.
Otherwise, the unit may not operate properly.
(Example 1)
(Example 2)
42 Outdoor Unit
Pipe inclination (2 or more)
Toward indoor unit
Toward indoor unit
Toward indoor unit
Toward indoor unit
Toward indoor unit
2m
Oil Trap
2m
2m