LG ARUN096BT2 Installation Manual page 30

Refrigerant piping installation
Combination of Y branch/header method
Example : 5 Indoor Units connected
: Outdoor Unit
: 1st branch (Y branch)
: Y branch
: Indoor Unit
: Header
: Sealed piping
Example : 5 Indoor Units connected
: Outdoor Unit
: 1st branch
: Y branch
: Indoor Unit
: Connection branch pipe
between Outdoor units:
ARCNN20
: Header
: Sealed piping
3 Outdoor Units
Example : 5 Indoor Units connected
: Outdoor Unit
: 1st branch(Y branch)
: Y branch
: Indoor Unit
: Connection branch pipe
between Outdoor units:
ARCNN30
: Connection branch pipe
between Outdoor units:
ARCNN20
: Header
: Sealing
30 Outdoor Unit
Branch pipe can not be used after header
Slave
Master
10m
(32.8ft)
or less
Branch pipe can not be used after header
Slave2
Slave1
Master
10m
(32.8ft)
or less
Branch pipe can not be used after header
L 150m(492ft)
40m(131ft)
L 150m(492ft)
40m(131ft)
L 150m(492ft)
40m(131ft)