LG Multi V CRUN Series

22 Outdoor Unit
Refrigerant piping installation
CR
UN1008T0
Example : 5 indoor units
connected
: outdoor unit
: 1st branch
(branch union)
: indoor units
: downward
indoor unit
➲ Piping diameter (A)
- Liquid pipe : Ø15.88mm(5/8 inch)
- Gas pipe : Ø28.58mm(9/8 inch)
➲ Refrigerant pipe diameter from branch to branch (B,C,D)
➲ Total pipe length = A+B+C+D+a+b+c+d+e ≤ 220m
A
L 100m
15m
50m
l 30m
H
h
a b c d
B
C
C C C
C
B
A
1
2 3 4
5
C D
e
D
Downward indoor unit total capacity
[kW(Btu/h)]
~8.2(28,000)
~17.6(60,000)
~28.1(96,000)
~36.3(125,000)
Ø9.52(3/8)
Ø12.7(1/2)
Ø12.7(1/2)
Ø15.88(5/8)
Ø15.88(5/8)
Ø19.05(3/4)
Ø25.4(1)
Ø28.58(9/8)
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
Longest pipe length
A+B+C+D+e ≤ 100m
Longest pipe length after 1st branch
B+C+D+e ≤ 30m
Difference in height(outdoor ↔ indoor)
H ≤ 50m ( 40m : outdoor is lower than indoor units)
Difference in height (indoor ↔ indoor)
h ≤ 15m
L
l
H
h