Pipe Drawing Out During Single / Series Connection; Refrigerant Piping System - LG ARUN BTE4 Series Installation Manual

Pipe Drawing Out during Single / Series connection

Method of drawing out pipes on the front side
- Proceed with the pipe work as shown in the below figure for front
side pipe drawing out.
Pipe Knock
Out for
Liquid/Gas pipes
Method of drawing out pipes on the bottom side
- Drawing out common pipe through side panel
Liquid pipe
Remove only liquid/gas pipe Knock out
Gas pipe

Refrigerant piping system

1 Outdoor Units
Y branch method
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Combination of Y
branch/header Method
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Header
Ⓕ : Sealed piping
Header Method
Ⓐ : Outdoor Unit
Ⓑ : 1st branch
Ⓒ : Indoor Units
Ⓓ : Sealed piping
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
h * : See Table 4
Ⓖ : Header
Ⓗ : Sealing
Indoor
Unit
L150m (200 m : Conditional application)*
l 40m (90 m : Conditional application)*
h 40m
h * : See Table 4
L150m (200 m : Conditional application)*
l 40m (90 m : Conditional application)*
h * : See Table 4
L200m
l 40m
h 40m
Slave2
Slave1
Master
10m or
less
h1
ODU Capacity
Master ≥ Slave1 ≥ Slave 2
L150m (200 m : Conditional application)
l 40m (90 m : Conditional application)
h 40m
ODU Capacity
Master ≥ Slave 1 ≥Slave 2 ≥Slave 3
A A
Slave2
Slave2
Slave1
Slave1
Master
Master
10m or
less
G
F H
B
C C C
L150m (200 m : Conditional application)*
l 40m (90 m : Conditional application)*
D
C C
11
I