Haier MRVIII-S AV08NMSETA Installation Manual page 17

Installation procedure
B. Indoor unit
Model Capacity
Diameter (mm)
07
09
12
16
18
24
28
30
38
48
72
96
Note:
AS072, AS092 gas pipe: Ø12.7mm; AS182 gas pipe/ liquid pipe: Ø15.88/9.52mm
C. Pipe spec and the torque
Diameter (mm)
Ø6.35
Ø9.52
Ø12.7
Ø15.88
Ø19.05
Branch pipe
Branch pipe selection:
Total indoor capacity(100W)
Less than 335
More than 335, less than 506
Outdoor unit type
The master unit will choose the closest one to the 1st branch pipe.
Note:
1. When connecting the outdoor branch pipe and the outdoor, please pay attention to the
outdoor pipe dimension.
2. When adjusting the diameter among outdoor branch pipe and among the units, please must
execute at the branch pipe side.
3. Please install the outdoor branch pipe (gas/liquid side) in horizontal or vertical direction.
4. When welding with hard solder, please must blow nitrogen. If not, a number of oxide will be
produced and cause heavy damage.Besides,to prevent water and dust into the pipe, please
make the brim as outer roll.
Gas pipe side
Connecting
method
Ø9.52
Ø9.52
Ø12.7
Ø12.7
Ø12.7
Ø15.88
Braze
Ø15.88
Ø15.88
Ø15.88
Ø15.88
Ø25.4
Ø25.4
Torque(N . m)
14~18
34~42
49~61
68~82
84~98
model(optional)
FQG-B335A
FQG-B506A
Diameter (mm)
Ø6.35
Ø6.35
Ø6.35
Ø6.35
Ø6.35
Ø9.52
Ø9.52
Ø9.52
Ø9.52
Ø9.52
Ø9.52
Ø9.52
15
Liquid pipe side
Connecting
method
Flared