LG Multi V CRUN Serie Montageanleitung Seite 22

Refrigerant piping installation
CRUN1008T0
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)
Downward indoor unit total capacity
[kW(Btu/h)]
~8.2(28,000)
~17.6(60,000)
~28.1(96,000)
~36.3(125,000)
Total pipe length = A+B+C+D+a+b+c+d+e ≤ 220m
Longest pipe length
L
A+B+C+D+e ≤ 100m
Longest pipe length after 1st branch
l
B+C+D+e ≤ 30m
Difference in height(outdoor
H
H ≤ 50m ( 40m : outdoor is lower than indoor units)
Difference in height (indoor
h
h ≤ 15m
22 Outdoor Unit
A
A
B C
B
a b
C
C
1
15m 2
Liquid pipe
[mm(inch)]
Ø9.52(3/8) Ø15.88(5/8)
Ø12.7(1/2) Ø19.05(3/4)
Ø12.7(1/2)
Ø15.88(5/8) Ø28.58(9/8)
indoor)
indoor)
L 100m
l 30m
e
D
c d
C C
3 4
Gas pipe
[mm(inch)]
Ø25.4(1)
D
C
5