Haier MRVIII-S AV08NMSETA Design, Installation & Maintenance Instruction page 49

Anti-fouling measures
First, clean the pipe.
Position Installation period
More than 1 month
Outdoor
Less than 1 month
Indoor Nothing to do with period
Pipe specifi cation:
1. Pipe "a" diameter (between indoor and branch pipe) depends on indoor pipe
Indoor (x100W) Gas pipe (mm) Liquid pipe (mm)
22~28 Ø9.52
36~56 Ø12.7
71~140 Ø15.88
226~280 Ø25.4
Note:
AS072 AS092 gas pipe: Ø12.7mm
AS182 gas pipe/ liquid pipe: Ø15.88mm/9.52mm
2. Pipe "b" diameter (between branch pipes)
Total indoor capacity after the branch pipe (kW)
<16.8KW
16.8KW≤X<22.4KW
22.4KW≤X<33.0KW
33.0KW≤X<47.0KW
Note:
Adjust the diameter on fi eld (changing pipe is needed)
When the latter indoor total capacity is less than 14.0kw, pipe b will use the specs as the pipe a.
Flat the pipe end or seal with adhesive tape
c
a a
b
a a
Ø6.35
Ø6.35
Ø9.52
Ø9.52
49
Measures
Flat the pipe end
The fi rst branch pipe
Gas pipe (mm)
Ø15.88
Ø19.05
Ø22.22
Ø28.58
Liquid pipe (mm)
Ø9.52
Ø9.52
Ø9.52
Ø12.7