Mitsubishi Electric PUHY-HP144TSHMU-A Service Handbook page 51

[ II Restrictions ]
1. 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)
72 model
96 model
144 model
192 model
(2) Size of the refrigerant pipe between the first branch and the indoor unit (indoor unit pipe size)
model Pipe diameter (mm) [inch]
06 - 18 models Liquid pipe
Gas pipe
24 - 54 models Liquid pipe
Gas pipe
72 model Liquid pipe
Gas pipe
96 model Liquid pipe
Gas pipe
(3) Size of the refrigerant pipe between the branches for connection to indoor units
Total capacity of the
downstream units
- P54
P55 - P72
P73 - P108
P109 - P144
P145 - P234
(4) Size of the refrigerant pipe between the first distributor or the second distributor and outdoor units
72 model
96 model
HWE0716A
Liquid pipe size (mm) [inch]
ø12.7 [1/2"]
ø12.7 [1/2"]
ø15.88 [5/8"]
ø15.88 [5/8"]
ø6.35 [1/4"]
ø12.7 [1/2"]
ø9.52 [3/8"]
ø15.88 [5/8"]
ø9.52 [3/8"]
ø19.05 [3/4"]
ø9.52 [3/8"]
ø22.2 [7/8"]
Liquid pipe size (mm) [inch]
ø9.52 [3/8"]
ø9.52 [3/8"]
ø9.52 [3/8"]
ø12.7 [1/2"]
ø15.88 [5/8"]
Liquid pipe size (mm) [inch] Gas pipe size (mm) [inch]
ø9.52 [3/8"] ø19.05 [3/4"]
ø22.2 [7/8"]
Gas pipe size (mm) [inch]
ø19.05 [3/4"]
ø22.2 [7/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
Gas pipe size (mm) [inch]
ø15.88 [5/8"]
ø19.05 [3/4"]
ø22.2 [7/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
- 42 - GB