LG MULTI V S ARUN030GSS0 Installation Manual page 33

1,MFL67798030,영영 2018. 12. 7. 영영 1:37 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
L
H
h
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,
calculation purpose
• Indoor Unit should be installed at lower position than the header.
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
Longest pipe length
A+f ≤ 150m
Longest pipe length after 1st branch
f ≤ 40m
Difference in height (Outdoor Unit ÷ Indoor Unit)
H ≤ 50m (40m : Outdoor Unit is lower than Indoor Units)
Difference in height (Indoor Unit ÷ Indoor Unit)
h ≤ 15m
L 150m
Equivalent pipe length(*)
A+f ≤ 175m
33
40m