Restrictions On Refrigerant Pipe Size - Mitsubishi Electric PUHY-P200 Service Handbook

[2-10 Restrictions on Refrigerant Pipes ]
2-10-2

Restrictions on Refrigerant Pipe Size

(1) Diameter of the refrigerant pipe between the outdoor unit and the first branch (outdoor unit pipe size)
Outdoor unit set name
(total capacity)
200 model
250 model
300 model
350 model
400 model
450 model
500 model
550 model
600 model
650 model
700 - 800 model
850 - 1350 model
*1. Use ø12.7 [1/2"] pipes if the piping length to the farthest indoor unit exceeds 90 m [295 ft].
*2. Use ø12.7 [1/2"] pipes if the piping length to the farthest indoor unit exceeds 40 m [131 ft].
(2) Size of the refrigerant pipe between the first branch and the indoor unit (indoor unit pipe size)
model
20 - 50 models
63 - 140 models
200 model
250 model
400 model
500 model
HWE14040
Liquid pipe size (mm) [inch]
ø9.52 [3/8"]
*1
ø9.52 [3/8"]
*2
ø9.52 [3/8"]
ø12.7 [1/2"]
ø12.7 [1/2"]
ø15.88 [5/8"]
ø15.88 [5/8"]
ø15.88 [5/8"]
ø15.88 [5/8"]
ø15.88 [5/8"]
ø19.05 [3/4"]
ø19.05 [3/4"]
Pipe diameter (mm) [inch]
Liquid pipe ø6.35 [1/4"]
Gas pipe ø12.7 [1/2"]
Liquid pipe ø9.52 [3/8"]
Gas pipe ø15.88 [5/8"]
Liquid pipe ø9.52 [3/8"]
Gas pipe ø19.05 [3/4"]
Liquid pipe ø9.52 [3/8"]
Gas pipe ø22.2 [7/8"]
Liquid pipe ø12.7 [1/2"]
Gas pipe ø28.58 [1-1/8"]
Liquid pipe ø15.88 [5/8"]
Gas pipe ø28.58 [1-1/8"]
Gas pipe size (mm) [inch]
ø22.2 [7/8"]
ø22.2 [7/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø34.93 [1-3/8"]
ø41.28 [1-5/8"]
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