ENGLISH
Installation Manual 33
Refrigerant piping installation
Longest pipe length * Equivalent pipe length
A+f ≤ 150m A+f ≤ 175m
Longest pipe length after 1st branch
f ≤ 40m
Difference in height(Outdoor Unit ↔ Indoor Unit)
H ≤ 100m
Difference in height (Indoor Unit ↔ Indoor Unit)
h ≤15m
Difference in height
(Outdoor Unit
↔
Outdoor Unit)
h1 ≤ 5m
L
l
H
h
h1
➲ Total pipe length = A+a+b+c+d+e+f ≤ 1,000m
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.
• Piping length from outdoor branch to outdoor unit ≤ 10m, equivalent length : max 13m
(for 18HP or more)
Branch pipe can not be used after header
Branch pipe can not be used after header
3 Outdoor Units
Example : 6 Indoor Units connected
: Outdoor Unit
: Header branch
: Indoor Units
: Sealing
: Connection branch pipe
between Outdoor units:
ARCNN30
: Connection branch pipe
between Outdoor units:
ARCNN20
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