Airwell VVFA Series Service Manual page 25

Pipe specification:
1. Pipe "a" diameter (between indoor and branch pipe) (depends on indoor pipe)
Please refer to the indoor air conditioner manual.
2. Pipe "b" diameter (between branch pipes)
Total indoor capacity after the branch pipe
(x100W)
X<112
112≤X< 234
3. Pipe "c" diameter ( outdoor pipe diameter)
Outdoor
Gas Liquid
capacity pipe pipe
(mm) (mm)
(100W)
126
140 Ø15.88 Ø9.52
155
Piping connection method:
Pipes can be connected in four directions
As shown in the figure, the piping can be connected from four directions. Through the front / rear hole piping piping
on the cover hole or crack directly across the floor.
From the outdoor machine unloading piping cover with a screwdriver and hammer knock off holes along the guide
wire break. Then, trim the edges of the holes, and mounted on the insulating sleeve (site) to protect the piping and
wiring.
Gas pipe (mm) Liquid pipe (mm)
Ø15.88
Ø19.05
Enlarged pipe (mm)
Gas pipe Liquid pipe
Ø19.05 Ø12.7
Ø9.52
Ø9.52
Copper pipe selection:
hardness
Outer diameter (mm) Ø6.35 Ø9.52 Ø12.7 Ø15.88
Min. thickness (mm)
hardness
Outer diameter (mm) Ø19.05 Ø22.22 Ø25.24 Ø28.58
Min. thickness (mm)
Note: If the copper pipe with outer diameter 19.05 is
coil pipe, the thickness should be over 1.1.
charging pipes
Enlarged diagram
A
A, B, C, D:Copper pipe hole
E:Power cord hole (with its own cable sheath)
F:Communication line hole
23
b
a a
b
a a
Softness
0.8 0.8 1.0
Half-hardness
1.0 1.1 1.2
gas pipes
liquid pipes
F
E
B
D
c
1.0
1.4
C