LG MULTI V PLUS II ARUN Série Manuel D'installation page 30

Refrigerant piping installation
➲ Total pipe length = A+a+b+c+d+e+f ≤ 1,000m(3,281 ft)
Longest pipe length
L
A+f ≤ 150m(492ft)
Longest pipe length after 1st branch
l
f ≤ 40m(131ft)
Difference in height(Outdoor Unit ↔ Indoor Unit)
H
H ≤ 100m(328ft)
Difference in height (Indoor Unit ↔ Indoor Unit)
h
h ≤15m(49ft)
Difference in height (Outdoor Unit ↔ Outdoor Unit)
h1
h1 ≤ 5m(16ft)
• * : Assume equivalent piping length of Y branch to be 0.5m(1.6ft), that of header to be 1m(3.3ft), calculation pur-
pose
• Indoor Unit should be installed at lower position than the header.
• Piping length from outdoor branch to outdoor unit ≤ 10m(32.8ft), equivalent length : max 13m(42.6ft)
(for 18HP or more)
30 Outdoor Unit
* Equivalent pipe length
A+f ≤ 175m(574ft)
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.