Haier AV10IMWEWA Design, Installation & Maintenance Instruction page 217

2. Pipe "b" diameter (between manifold pipes)
Total indoor capacity after the manifold pipe (kW)
Note: Adjust the diameter on job site (changing pipe is needed)
When the latter indoor total capacity is less than 14.0kw, pipe b will use the specification as the pipe a.
3. Pipe "c" diameter (main pipe, between outdoor branch pipe and the first manifold pipe)
Outdoor capacity
23.5kW
29.3kW
35.1kW
47.0kW
52.8kW
58.6kW
64.4kW
70.2kW
76.3kW
82.1kW
87.9kW
93.7kW
99.5kW
105.3kW
Note: When the distance from outdoor to the farthest indoor is over 80m, the enlarged diameter should be chosen
for the main pipe.
<16.8kW
16.8KW≤X<22.4kW
22.4KW≤X<33.0kW
33.0KW≤X<47.0kW
47.0KW≤X<71.0kW
71.0KW≤X<101.0kW
≥101.0kW
Main pipe
Gas pipe (mm)
Ø19.05
Ø22.2
Ø25.4
Ø28.58
Ø28.58
Ø28.58
Ø28.58
Ø31.8
Ø31.8
Ø31.8
Ø31.8
Ø31.8
Ø31.8
Ø38.1
Liquid pipe (mm)
Ø9.52
Ø9.52
Ø12.7
Ø15.88
Ø15.88
Ø15.88
Ø15.88
Ø19.05
Ø19.05
Ø19.05
Ø19.05
Ø19.05
Ø19.05
Ø19.05
216
Gas pipe (mm)
15.88
19.05
22.22
28.58
28.58
31.8
38.1
Enlarged main pipe
Gas pipe (mm)
Ø22.2
Ø25.4
Ø28.58
Ø31.8
Ø31.8
Ø31.8
Ø31.8
Ø38.1
Ø38.1
Ø38.1
Ø38.1
Ø38.1
Ø38.1
Ø38.1
Liquid pipe (mm)
9.52
9.52
9.52
12.7
15.88
19.05
19.05
Liquid pipe (mm)
Ø12.7
Ø12.7
Ø12.7
Ø15.88
Ø15.88
Ø15.88
Ø15.88
Ø19.05
Ø19.05
Ø19.05
Ø19.05
Ø19.05
Ø19.05
Ø22.22