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If the piping is too long, both the capacity and reliability of unit will drop. As the number of bends increase, resistance to
flow of refrigerant system increases, thus lowering cooling capacity and as a result the compressor may become defective.
Always choose the shortest path and follow the recommendation as tabulated below.
3/8" (OD9.52mm)
1/2" (OD12.7mm)
5/8" (OD15.9mm)
3/4" (OD19.1mm)
7/8" (OD22.2mm)
1" (OD25.4mm)
1 1/8" (OD28.6mm)
1 3/8" (OD34.9mm)
Notes:
1. Equivalent piping length is obtained with actual length of gas piping.
2. 90° bend of piping is equivalent to L joint.
Bending must be carefully made so as not to crush the pipe. Use a pipe bender to bend a pipe where possible.
6.35 (1/4")
6.35 (1/4")
9.52 (3/8")
12.70 (1/2") 15.88 (5/8") 15.88 (5/8") 15.88 (5/8") 15.88 (5/8") 15.88 (5/8")
0.18
0.20
0.25
0.35
0.40
0.45
0.50
0.60
5
9.52 (3/8")
9.52 (3/8")
9.52 (3/8")
1.3
1.5
2.0
2.4
3.0
3.4
3.7
4.4
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