Pipe Drawing Out During Single / Series Connection; Refrigerant Piping System - LG MULTI V 5 ARUN120BTE5 Installation Manual

1,MFL67221438,영영 2018. 10. 4. 영영 11:29 Page 13
Remove leakage prevention cap
• Remove the leakage prevention cap attached to the outdoor unit
service valve before pipe work.
• Proceed the leakage prevention cap removal as follows:
- Verify whether all the pipes are locked.
- Extract remaining refrigerant or air inside using the service port.
- Remove the leakage prevention cap
Liquid pipe
Gas pipe

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.
Liquid pipe
Liquid pipe
Gas pipe
Method of drawing out pipes on the bottom side
- Drawing out common pipe through side panel
Liquid pipe
Remove Knock Out for the pipes
Service Port
Leakage
Prevention Cap
Gas pipe
Gas pipe

Refrigerant piping system

1 Outdoor Units
Y branch method
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
h * : See Table 4
Combination of Y
branch/header Method
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Header
Ⓕ : Sealed piping
h * : See Table 4
Header Method
Ⓐ : Outdoor Unit
Ⓒ : Indoor Units
Ⓓ : Sealed piping
Ⓔ : Header
Series Outdoor Units (2 Units ~ 4 Units)
Y branch method
Ⓐ : Outdoor Unit
10m or
Ⓑ : 1st branch (Y branch) less
Ⓒ : Indoor Units
G
Ⓓ : Downward Indoor Unit
Ⓔ : Connection branch
pipe between Outdoor
units: ARCNN41
Ⓕ : Connection branch
pipe between Outdoor
units : ARCNN31
Ⓖ : Connection branch
h * : See Table 4
pipe between Outdoor
units : ARCNN21
Combination of Y branch/
header Method
Ⓐ : Outdoor Unit
10m or
less
Ⓑ : 1st branch(Y branch)
Ⓒ : Y branch G
Ⓓ : Indoor Unit
Ⓔ : Connection branch pipe
between Outdoor
units : ARCNN41
Ⓕ : Connection branch pipe
between Outdoor
units : ARCNN31
Ⓖ : Connection branch pipe
h * : See Table 4
between Outdoor
units : ARCNN21
Ⓗ : Header
Ⓘ : Sealed piping
13
Indoor
Unit
L 150 m [492 ft] (200 m [656 ft])
l 40 m [131 ft] (90m [295 ft])
h 40 m [131 ft]
L 150 m [492 ft] (200 m [656 ft])
l 40 m [131 ft] (90m [295 ft])
L 200 m [656 ft]
l 40 m [131 ft]
D
h 40 m [131 ft]
ODU Capacity
Slave3
Master ≥ Slave 1 ≥Slave 2 ≥Slave 3
Slave2
Slave1
Indoor
Master
Unit
F
E
L 150 m [492 ft] (200 m [656 ft])
l 40 m [131 ft] (90m [295 ft])
C
C
C C
h 40 m (131 ft)
C
ODU Capacity
Master ≥ Slave 1 ≥Slave 2 ≥Slave 3
Slave3
Slave2
Slave1
Master
F
E
H
I
L 150 m [492 ft] (200 m [656 ft])
l 40 m [131 ft] (90m [295 ft]