Haier MRV II AV08NMVERA Installation Manual page 23

(2) Pipe specification:
a. Pipe "a" diameter (between indoor and branch pipe) (depends on indoor pipe, for wall
mounted unit, please refer to its specification)
Indoor(×100W)
b. Pipe "b" diameter (between branch pipes)
Total indoor capacity after the
branch pipe
14.0KW《<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
When the later indoor capacity is less than 14.0KW, the specification of pipe b should refer
to the data in table a.
c. Pipe "c" diameter (main pipe, between outdoor gather pipe and the first branch pipe)
Outdoor
capacity
22.6KW
28.0KW
33.5KW
40.0KW
45.0KW
50.6KW
56.0KW
e e
d
b
a a
a a
22~28
36~56
71~140
Main pipe
Gas pipe Liquid pipe
φ19.05 φ9.52
φ22.2 φ9.52
φ25.4 φ12.7
φ25.4 φ12.7
φ28.58 φ12.7
φ28.58 φ15.88
φ28.58 φ15.88
23
outdoor gather pipe
e
c
the first branch
b
Gas pipe Liquid pipe
φ9.52 φ6.35
φ12.7 φ6.35
φ15.88 φ9.52
Gas pipe Liquid pipe
Φ15.88 Φ9.52
Φ19.05 Φ9.52
Φ9.52
Φ22.22
Φ12.7
Φ28.58
Φ15.88
Φ31.88
Φ19.05
Φ38.1
Enlarged main pipe
Gas pipe
φ22.2
φ25.4
φ28.58
φ28.58
φ31.8
φ31.8
φ31.8
Liquid pipe
φ12.7
φ12.7
φ12.7
φ12.7
φ12.7
φ15.88
φ15.88