Gree Ultra Heat GMV Multi VRF Series - Installation of the Connection Pipe

Ultra Heat GMV Multi VRF_Heat Recovery Serial
20
Fig.22
Connecting method is shown as in the Fig.23.
Fig.23
4.3.6.1 Branch selection of indoor unit of mode exchanger (“C1”)
R410A refrigerant system
Total rated capacity of downstream
indoor units: X(Btu/h)
Model
Y-type branch
48500<X≤96000
FQ01B/A
4.3.6.2 Pipe size between mode exchanger and downstream and indoor unit (“m”)
Rated capacity of indoor units:
X ((Btu/h)
Size of connection pipe between indoor branch and indoor unit
Gas pipe mm(inch)
Liquid pipe mm(inch)
48500＜X≤72000
Φ19.05(3/4)
Φ9.52(3/8)
72000＜X≤96000
Φ22.2(7/8)
Φ9.52(3/8)
4.4 Installation of the Connection Pipe
Notice: before welding the pipeline sealing cap, please make sure there’s no refrigerant in pipeline.
If welding it directly, it may cause unnecessary property damage or personal injury.
4.4.1 Precautions when installing the connection pipe