Airwell YEVFD Series, Service Manual

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B. Indoor unit
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
C. Pipe spec and the torque
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
Branch pipe
Branch pipe selection:
Total indoor capacity(100W) model(optional)
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.
Adhesive side
Prepare on field
Seal the connection and wrap the
heat insulator with adhesive tape
Cut off pipe with the cutter
Floor
Floor
Right
Horizontal
Cut off at the middle
Wrong
TAU-335
TAU-506
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