LG ARUN80LN3 Installation Manual page 36

Pipe connections between indoor and outdoor unit
3 Outdoor Units
Example : 5 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch(Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Connection branch pipe
between Outdoor units:
ARCNN31
Ⓕ : Connection branch pipe
between Outdoor units:
ARCNN21
Ⓖ : Header
Ⓗ : Sealing
4 Outdoor Units
Example : 5 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch(Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Connection branch pipe
between Outdoor units:
ARCNN41
Ⓕ : Connection branch pipe
between Outdoor units:
ARCNN31
Ⓖ : Connection branch pipe
between Outdoor units:
ARCNN21
Ⓗ : Header
Ⓘ : Sealing
36 Outdoor Unit
Slave2
Slave1
Master
10m or
less
F F
E E
Branch pipe can not be used after header
Slave3
Slave2
Slave1
Master
G G
F F
E E
10m or
less
Branch pipe can not be used after header
ODU Capacity
Master ≥ Slave1 ≥ Slave2
L 150m(200m : Conditional application)
40m(90m : Conditional application)
ODU Capacity
Master ≥ Slave1 ≥ Slave2 ≥ Slave3
L 150m(200m : Conditional application)
40m(90m : Conditional application)