LG Multi V CRUN Series

Installation Manual 23
Refrigerant piping installation
ENGLISH
◆ Header Method
CRUN458S0
Example : 6 indoor units
connected
: outdoor unit
: 1st branch
: indoor units
: sealing
➲ Piping diameter (A)
- Liquid pipe : Ø12.7mm(1/2 inch)
- Gas pipe : Ø19.05mm(3/4 inch)
➲ Total pipe length = A+a+b+c+d+e+f ≤ 100m
A
L 70m
12m
30m
l 30m
H
h
c d
B
D
C
C
C C
C
A
1
2
3 4
e
C
5
6
f
X
ba
Longest pipe length
A+f ≤ 70m
Longest pipe length after 1st branch
f ≤ 30m
Difference in height(outdoor ↔ indoor)
H ≤ 30m ( 20m : outdoor is lower than indoor units)*
Difference in height (indoor ↔ indoor)
h ≤ 12m
L
l
H
h
Branch pipe can not be used
after header
* Indoor unit should be installed at lower position than the
header.