Total Pipe Length = A+A+B+C+D+E+F ≤ 1,000M - LG Multi V Plus II System Installation Manual

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
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
➲ Total pipe length = A+a+b+c+d+e+f ≤ 1,000m
Longest pipe length
L
A+f ≤ 150m
Longest pipe length after 1st branch
l
f ≤ 40m
Difference in height(Outdoor Unit ↔ Indoor Unit)
H
H ≤ 100m
Difference in height (Indoor Unit ↔ Indoor Unit)
h
h ≤15m
Difference in height (Outdoor Unit ↔ Outdoor Unit)
h1
h1 ≤ 5m
• * : 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)
Slave2
Slave1
Master
10m or
less
Branch pipe can not be used after header
Slave2
Slave1
Master
10m or
less
Branch pipe can not be used after header
* Equivalent pipe length
A+f ≤ 175m
Refrigerant piping installation
L 150m
40m
L 150m
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.
Installation Manual 33
40m