Gree Ultra Heat GMV-V72W/A-F, Service Manual

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Ultra Heat GMV VRF Technical Service Manual INSTALLATION
38
(b)
(2) Select appropriate pipe between o
utdoor unit and the first indoor branch (―L‖) as per the pipe
size of outdoor unit. Pipe size of basic outdoor module is shown as follows:
Basic module
Pipe between outdoor unit and the first indoor branch
Gas pipe mm(inch) Liquid pipe mm(inch)
GMV-V72W/A-F(U)
Φ28.6(1-1/8) Φ9.52(3/8)
GMV-V96W/A-F(U)
Φ28.6(1-1/8) Φ9.52(3/8)
(3)
Branch selection of mode exchanger (―A1, A2, A3‖)
Select branch of mode exchanger as per total capacity of downstream indoor unit(s). Please refer to
the following table.
R410A refrigerant system Total Capacity of the Downstream Indoor Unit X(Btu/h) Model
Y-type Branch Pipe
C≤68000
FQ01A/A
68000
＜ C≤102000
FQ01B/A
102000
＜
C≤239000
FQ02/A
239000
＜
C
FQ03/A
T-type Branch Pipe
C≤136000
FQ014/H1
136000
＜ C≤232000
FQ018/H1
232000
＜
C
FQ018/H2
(4) Piping size among upstream branches (
―b, e‖)
Total rated capacity of downstream
indoor units: X(Btu/h)
Size of connection pipe between branches
Gas pipe mm(inch) Liquid pipe mm(inch)
X≤17100 Φ12.7(1/2) Φ6.35(1/4)
17100
＜ X≤48500
Φ15.9(5/8) Φ9.52(3/8)
48500
＜ X≤72000
Φ19.05(3/4) Φ9.52(3/8)
72000
＜ X≤96000
Φ22.2(7/8) Φ9.52(3/8)
96000
＜ X≤144000
Φ28.6(1-1/8) Φ12.7(1/2)