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
10m or
less
H 1
1
0m
L 200m
40m
Master
Slave2
Slave1
ODU Capacity
Master ≥ Slave1 ≥ Slave2
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
10m or
less
H 1
10m
L 200m
40m
Master
Slave3
Slave1
Slave2
G
F
E
G
F
E
ODU Capacity
Master ≥ Slave1 ≥ Slave2 ≥ Slave3