Piping Work Requirements - Gree GMV-VQ72W/A-F Owner's Manual

3.3 Piping Work Requirements

There should be no fall among outdoor modules. Refer to the table below for piping work
requirements.
Outer diameter (mm/inch)
Φ6.35(1/4)
Φ9.52(3/8)
Φ12.70(1/2)
Φ15.9(5/8)
Φ19.05(3/4)
Φ22.2(7/8)
Φ25.40(1/1)
Φ28.60(9/8)
Φ31.80(5/4)
Φ34.90(11/8)
Φ38.10(12/8)
Φ41.30(13/8)
Φ44.5(7/4)
Φ51.4(7/4)
Φ54.1(17/8)
Fig.12
R410A Refrigeratn System
Wall thickness (mm)
≥0.8
≥0.8
≥0.8
≥1.0
≥1.0
≥1.2
≥1.2
≥1.2
≥1.3
≥1.3
≥1.5
≥1.5
≥1.5
≥1.5
≥1.5
10
Ultra Heat GMV Multi VRF_Heat Recovery Serial
Type
1/2H
1/2H
1/2H
1/2H
1/2H
1/2H
1/2H
1/2H
1/2H
1/2H
1/2H
0
0
0
0