LG multi V ARUN100BSS0 Installation Manual page 33

Header Method
Example : 6 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : Header
Ⓒ : Indoor Units
Ⓓ : Sealed piping
Total pipe length = A+a+b+c+d+e+f ≤ 300m
Longest pipe length
L
A+f ≤ 150m
Longest pipe length after 1st branch
f ≤ 40m
Difference in height (Outdoor Unit ÷ Indoor Unit)
H
H ≤ 50m (40m : Outdoor Unit is lower than Indoor Units)
Difference in height (Indoor Unit ÷ Indoor Unit)
h
h ≤ 15m
WARNING
!
Pipe length after header branching (a~f)
It is recommended that difference in length of the pipes connected to the Indoor Units is
minimized. Performance difference between Indoor Units may occur.
• * : Assume equivalent piping length of Y branch to be 0.5m, that of header to be 1m, calcu-
lation purpose
• Indoor Unit should be installed at lower position than the header.
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
L 150m
Equivalent pipe length(*)
A+f ≤ 175m
33
40m