Piping Work Requirements - Gree GMV-144WM/B-U Owner's Manual

3.2.5 Considering snow in outdoor unit installation

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(in.)
Φ6.35(1/4)
Φ9.52(3/8)
Φ12.7(1/2)
Φ15.9(5/8)
Φ19.05(3/4)
Φ22.2(7/8)
Φ28.6(1-1/8)
Φ34.9(1-3/8)
Φ41.3(1-5/8)
Fig.3.2.11
R410A Refrigerant System
Wall Thickness mm(in.)
≥0.8(1/32)
≥0.8(1/32)
≥0.8(1/32)
≥1.0(3/76)
≥1.0(3/76)
≥1.2(1/21)
≥1.2(1/21)
≥1.3(2/39)
≥1.5(1/17)
10
GMV DC Inverter VRF
Type
O
O
O
O
1/2H
1/2H
1/2H
1/2H
1/2H