15
Installation procedure
B. Indoor unit
C. Pipe spec and the torque
Model Capacity
Gas pipe side
Liquid pipe side
Diameter (mm)
Connecting
method
Diameter (mm)
Connecting
method
07
Ø9.52
Braze
Ø6.35
Flared
09
Ø9.52
Ø6.35
12
Ø12.7
Ø6.35
16
Ø12.7
Ø6.35
18
Ø12.7
Ø6.35
24
Ø15.88
Ø9.52
28
Ø15.88
Ø9.52
30
Ø15.88
Ø9.52
38
Ø15.88
Ø9.52
48
Ø15.88
Ø9.52
72
Ø25.4
Ø9.52
96
Ø25.4
Ø9.52
Diameter (mm)
Torque(N.m)
Ø6.35
14~18
Ø9.52
34~42
Ø12.7
49~61
Ø15.88
68~82
Ø19.05
84~98
Note:
AS072, AS092 gas pipe: Ø12.7mm; AS182 gas pipe/ liquid pipe: Ø15.88/9.52mm
Branch pipe
Branch pipe selection:
Total indoor capacity(100W)
model(optional)
Less than 335
FQG-B335A
More than 335, less than 506
FQG-B506A
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.
