Mitsubishi Electric R410A Service Handbook page 56

[2-10 Restrictions on Refrigerant Pipes ]
(4) Size of the refrigerant pipe between the first distributor and the second distributor
Liquid pipe size (mm) [inch]
ø19.05 [3/4"]
(5) Size of the refrigerant pipe between the first distributor or the second distributor and outdoor units
72 model
96 model
120 model
* The outdoor units that can be used in combination are only the 120 model and lower.
HWE14080
Gas pipe size (mm) [inch]
ø34.93 [1-3/8"]
Liquid pipe size (mm) [inch] Gas pipe size (mm) [inch]
ø9.52 [3/8"] ø22.2 [7/8"]
ø12.7 [1/2"] ø28.58 [1-1/8"]
- 47 - GB