Gree Ultra Heat GMV Multi VRF Series - Piping Work Requirements

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