LG MULTI V IV PRO ARUN080LLH4 Installation Manual page 29

Series Outdoor Units (2 Units ~ 3 Units)
Y branch method
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Ⓓ : Downward Indoor Unit
Ⓔ : Connection branch pipe between
Outdoor units: ARCNN31
Ⓕ : Connection branch pipe between
Outdoor units: ARCNN21
Combination of Y branch/header Method
Ⓐ : 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
Header Method
Ⓐ : Outdoor Unit
Ⓑ : Header branch
Ⓒ : Indoor Units
Ⓓ : Sealing
Ⓔ : Connection branch pipe between
Outdoor units : ARCNN31
Ⓕ : Connection branch pipe between
Outdoor units : ARCNN21
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
Slave2
Slave1
Master
h1
10 m or
less
l 40 m (90 m : Conditional application)
h 30 m
Slave2
Slave1
Master
h1
Master ≥ Slave1 ≥ Slave2
F F
E E
10 m or
less
l 40 m(90 m : Conditional application)
Slave2
Slave1
Master
h1
F F
10 m or
E E
less
30 m
29
ODU Capacity
Master ≥ Slave1 ≥ Slave 2
L165 m
ODU Capacity
L 165 m
ODU Capacity
Master ≥ Slave1 ≥ Slave2
L 165 m
40 m