LG MULTI V S ARUV060GSD0 - Page 34

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PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
ENGLISH
Example : 5 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Header
Ⓕ : Sealed piping
L 150m
40m
H 50m
Branch pipe can not be used after header
Combination of Y branch/header method
• * : Assume equivalent pipe length of Y branch to be 0.5m, that of header to be 1m, cal-
culation purpose
• Indoor Unit should be installed at lower position than the header.
WARNING
• It is recommended that difference of piping length for pipes connected to the Indoor Unit
is minimized. Performance difference between Indoor Units may occur.
• When the any one (or both ) of below conditions are satisfied, the diameter of main pipe
(A) must be increased according to below table.
- The equivalent length between outdoor unit and the farthest indoor unit is 90m or more
(Liquid and Gas pipes are increased)
!
Outdoor unit capacity (HP) 2.5 3456
T
Total pipe length (m)
50 80 85 100 100
A+B+C+a+b+c+d+e
L
Longest pipe length (m) (Equivalent pipe length)
30 40 50 50 50
A+B+C+D+e
l
Longest pipe length after 1st branch (m)
20 30 30 30 30
B+C+D+e
H
Difference in height (m) (Outdoor Unit ÷ Indoor Unit)
15 15 15 15 15
H
h
Difference in height (m) (Indoor Unit ÷ Indoor Unit)
7.5 7.5 7.5 7.5 7.5
h