BGH GMV6 - Page 126

8.3 Piping selection
When several modules are connected, the installation sequence of ODU 1-4 shall meet the following
requirement: ODU 4 ≥ ODU 3 ≥ ODU 2 ≥ ODU 1.
(1) Piping “A”of ODU and ODU branch
Choose pipe diameter according to the ODU capacity connected to the upstream of ODU branch.
Basic module (single module system)
Gas pipe (mm) Liquid pipe (mm)
GMV-224WM/G-X
Φ
19.05
Φ
9.52
GMV-280WM/G-X
Φ
22.2
Φ
9.52
GMV-335WM/G-X
Φ
25.4
Φ
12.7
GMV-400WM/G-X
Φ
25.4
Φ
12.7
GMV-450WM/G-X
Φ
28.6
Φ
12.7
GMV-504WM/G-X
Φ
28.6
Φ
15.9
GMV-560WM/G-X
Φ
28.6
Φ
15.9
GMV-615WM/G-X
Φ
28.6
Φ
15.9
GMV-680WM/G-X
Φ
28.6
Φ
15.9
(2) Piping “B” of the ODU branches and piping “C” of the ODU and IDU branches
Make a choice according to the sum of all the connected ODU capacity of upstream ODU branch.
Total rated capacity of upstream module Q
(kW)
Piping size among ODU modular branches
Gas pipe (mm) Liquid pipe (mm)
Q≤22.4
Φ
19.05
Φ
9.52
22.4<Q≤30.0
Φ
22.2
Φ
9.52
30.0<Q≤40.0
Φ
25.4
Φ
12.7
40.0<Q≤45.0
Φ
28.6
Φ
12.7
45.0<Q≤68.0
Φ
28.6
Φ
15.9
68.0<Q≤96.0
Φ
31.8
Φ
19.05
96.0<Q≤135.0
Φ
38.1
Φ
19.05
135.0<Q≤186.0
Φ
41.3
Φ
19.05
186.0<Q
Φ
44.5
Φ
22.2
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