LG MULTI V IV PRO ARUN080LLH4 Installation Manual page 30

PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
30
Pipe Connection Method between outdoor unit/indoor unit
Indoor
Unit
h 30 m
h See Table 2
A : Refrigerant pipe diameter from outdoor unit to first branch
E : Refrigerant pipe diameter for outdoor unit capacity (Slave 1+ Slave 2)
F : Refrigerant pipe diameter for outdoor unit capacity (Slave 2)
Level Difference (Outdoor unit ↔ Outdoor unit)
Max length from first branch to each outdoor
unit (L1, L2, L3)
(Table 1) Limit Pipe length
Outdoor Unit
Max pipe
↔
length
Indoor Unit
Outdoor Unit
Max
↔ Indoor Unit
difference
Indoor Unit
in height
↔ Indoor Unit
Longest pipe
length after
1st branch
h * : See Table 4
Slave1
Master
h1
L2
L3
E F
L1
1st branch
Refrigerant pipe diameter from outdoor unit to first branch
l 40 m
Longest pipe
A+B+C+D+e≤165 m
length(L)
Equivalent pipe
length
Total pipe
length
Difference in
height(H)
Difference in
height(h)
Pipe length(l) (90 m: Conditional
application)*
Slave2
5 m
Less than 10 m
(equivalent length of piping 13 m)
Combination of Y
Y branch
branch/header
Method
Method
A+B+b≤165 m
A+C+e≤165 m
190 m 190 m
1,000 m 1,000 m
90 m 90 m
30 m 30 m
40 m 40 m
(90 m: Conditional
application)*
Header
Method
A+f≤165 m
190 m
1,000 m
90 m
30 m
40 m