Gree GMV-72WM/B-U Owner's Manual page 23

4.3.5.6 Fitting pipe between manifolds
Pipe size (between two manifolds at indoor unit side) is based on the total capacity of upstream
indoor unit(s).
Total capacity of downstream indoor
unit(s) C(Btu/h)
C≤17100
17100<C≤48500
48500<C≤72000
72000<C≤96000
96000<C≤144000
144000<C≤216000
216000<C≤240000
240000<C≤336000
336000<C
4.3.5.7 Fitting pipe between indoor unit and manifold
Manifold should be matched with fitting pipe of indoor unit.
Rated capacity of indoor unit C(Btu/h)
C≤9500
9500<C≤17100
17100<C≤48500
48500<C≤72000
72000<C
Fig.4.3.13
Dimension of the pipe of indoor branch
Gas Pipe mm(inch)
Φ12.7(1/2)
Φ15.9(5/8)
Φ19.05(3/4)
Φ22.2(7/8)
Φ28.6(1-1/8)
Φ28.6(1-1/8)
Φ34.9(1-3/8)
Φ34.9(1-3/8)
Φ41.3(1-5/8)
Fig.4.3.14
Pipe between indoor branch and IDU
Gas Pipe mm(inch)
Φ9.52(3/8)
Φ12.7(1/2)
Φ15.9(5/8)
Φ19.05(3/4)
Φ22.2(7/8)
19
GMV DC Inverter VRF
Liquid Pipe mm(inch)
Φ6.35(1/4)
Φ9.52(3/8)
Φ9.52(3/8)
Φ9.52(3/8)
Φ12.7(1/2)
Φ15.9(5/8)
Φ15.9(5/8)
Φ19.05(3/4)
Φ19.05(3/4)
Liquid Pipe mm(inch)
Φ6.35(1/4)
Φ6.35(1/4)
Φ9.52(3/8)
Φ9.52(3/8)
Φ9.52(3/8)