Airwell AWAU-YDV1010-H13, Service Manual

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2. Pipe b (between branch pipes) diameter:
Total capacity of
connected indoors
Gas pipe Liquid
pipe
(1) Select in accordance with total capacity connected
(2) Pipe b diameter should not be bigger than main pipe c
If pipe b diameter is larger than main pipe c, please correct
diameter according to either of the following rules:
①
Reduce b diameter to be the same as pipe c
②
Enlarge main pipe c diameter to be the same as pipe b.
(3) If pipe b diameter smaller than pipe a, the pipe b diameter
must be enlarged.
x<16.8kw 15.88 9.52
16.8kw≤x<22.4kw 19.05 9.52
22.4kw≤x<33kw 22.22 9.52
33kw≤x<47kw 28.58 12.7
47kw≤x<71kw 28.58 15.88
71kw≤x<104kw 31.8 19.05
104kw≤x<154kw 38.1 19.05
154kw≤x<182kw 41.3 19.05
x≥182kw 44.5 22.22
3. Main pipe c (between outdoor gather pipe & the first branch pipe) diameter:
Outdoor horse power
Main pipe Enlarged main pipe
Gas pipe Liquid pipe Gas pipe Liquid pipe
8HP 19.05 9.52 22.22 12.7
10HP 22.22 9.52 25.4 12.7
12-14HP 25.4 12.7 28.58 15.88
16HP 28.58 12.7 31.8 15.88
18-24HP 28.58 15.88 31.8 19.05
26-34HP 31.8 19.05 38.1 22.22
36-54HP 38.1 19.05 38.1 22.22
56-64HP 41.3 19.05 41.3 22.22
66-72HP 44.5 22.22 44.5 22.22
When the farthest length (between outdoor & the farthest indoor) is over 90m (equivalent length), the main pipe
must be enlarged one size.
4. Pipe d (between gather pipes) diameter:
Total horse power of connected outdoors Gas pipe Liquid pipe
8HP 19.05 9.52
10HP 22.22 9.52
12-14HP 25.4 12.7
16HP 28.58 12.7
18-24HP 28.58 15.88
26-34HP 31.8 19.05
36-54HP 38.1 19.05
56-64HP 41.3 19.05
66-72HP 44.5 22.22
5. Pipe e (between outdoor & gather pipe) diameter:
Outdoor horse power Gas pipe Liquid pipe
8HP 19.05 9.52
10HP 22.22 9.52
12-14HP 25.4 12.7
16HP 28.58 12.7
18-24HP 28.58 15.88