34 Outdoor Unit
Pipe connections between indoor and outdoor unit
Longest pipe length * Equivalent pipe length
A+f ≤ 200m A+f ≤ 225m
Longest pipe length after 1st branch
f ≤ 40m
Difference in height(Outdoor Unit ÷ Indoor Unit)
H ≤ 110m
Difference in height (Indoor Unit ÷ Indoor Unit)
h ≤15m
Difference in height
(Outdoor Unit
÷
Outdoor Unit)
h1 ≤ 5m
L
l
H
h
h1
Ú 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 22HP 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:
ARCNN31
Ⓕ : Connection branch pipe
between Outdoor units:
ARCNN21
4 Outdoor Units
Example : 6 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : Header branch
Ⓒ : Indoor Units
Ⓓ : Sealing
Ⓔ : Connection branch pipe
between Outdoor units:
ARCNN41
Ⓕ : Connection branch pipe
between Outdoor units:
ARCNN31
Ⓖ : Connection branch pipe
between Outdoor units :
ARCNN21
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