PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
35
ENGLISH
Header Method
Example : 6 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : Header
Ⓒ : Indoor Units
Ⓓ : Sealed piping
L 150m
H 50m
40m
• * : 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.
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.
!
Total pipe length = A+a+b+c+d+e+f ≤ 300m
L
Longest pipe length Equivalent pipe length(*)
A+f ≤ 150m A+f ≤ 175m
l
Longest pipe length after 1st branch
f ≤ 40m
H
Difference in height (Outdoor Unit ↔ Indoor Unit)
H ≤ 50m (40m : Outdoor Unit is lower than Indoor Units)
h
Difference in height (Indoor Unit ↔ Indoor Unit)
h ≤ 15m
1,MFL67798020, 2018. 4. 26. 7:06 Page 35
www.lgcomfortcooling.co.uk
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