Airwell AWSI YIFA060–H13 Service Manual page 10

5.2.2 Equivalent pipe length conversion
Equivalent pipe length means converting pipe elbow to straight pipe length after considerate the
pressure loss.
Equivalent pipe length L Actual Pipe length L+ Bend Qty× Equivalent pipe bend length+ Oil
Loop Qty × Equivalent Oil Loop length
Sample:
ALCA-H42A5/C5 Actual Pipe length is 25 meters, Gas pipe diameter is 19.05mm. If there's 5
bends and 2 oil loops during the installation, then the equivalent pipe length should be:
L=25+0.35× 5+2.4× 2=31.5(m)

Specification of connection pipe for indoor unit and outdoor unit
Cooling Capacity(Btu/h)
Connectio
n Pipe
(mm)
Max.
Length(m)
Max. Height (m)
Max. Bend Qty
Extra R410a per meter when
the pipe length is more than 5
meter (kg)
Caution:
1.The standard Pipe length is 5m, if the pipe length is less than this then no additional charging is necessary. If the pipe length is
more than this then you should charge more refrigerant into the system according to the above Charging Data
2.The thickness of the pipe is 0.5-1.0, bearing pressure is 3.040MPa
3.If the connection pipe is too long, the cooling capacity and stability would be decreased. And the more bend quantity, he
resistance in the piping system would be bigger, then the cooling and heating capacity would be decreased even lead to
compressor broken. We suggest you to use the shortest connection pipe according to the pipe length parameter in this manual.
18000
Φ6.35
Liquid Pipe
Φ12.7
Gas Pipe
Φ6.35
Liquid Pipe Dia.
Φ12.7
Gas Pipe Dia.
Max. Length 20
15
4
0.02
24000 36000
Φ9.52
Φ15.88
Φ9.52
Φ15.88
30
15
4
0.02
PERFORMANCE DATA
48000 60000
Φ9.52
Φ19.05
Φ9.52
Φ19.05
50
30
10
0.07
9 | S e r v i c e M a n u a l