Internal Leak Test; Determining The Test Volume - Buderus Logano plus GB402 Installation And Maintenance Instructions Manual

9.3

Internal leak test

9.3.1

Determining the test volume

V = V = V + V
test total pipe gas valve
B Determine length of pipe to main fuel shut-off valve.
B Determine the gas valve volume (V
Tab. 12.
B Determine the pipework volume (V
and Tab. 14.
B Calculate test volume (V
equation.
Gas valve volume (approximate values)
Gas valve volumes up to 50 kW
Gas valve volume > 50 kW
Tab. 12 Gas valve volume (V
Pipe length
in metres
1
2
3
4
5
6
7
8
9
10
Tab. 13 Pipework volume (V
Pipe length
in metres
1
2
3
4
5
6
7
8
9
10
Tab. 14 Pipework volume (V
Logano plus GB402 - Subject to technical modifications!
) using
gas valve
) using Tab. 13
pipe
) according to above
test
0.1 litres
0.2 litres
)
gas valve
½ ¾
0.2 0.4
0.4 0.7
0.6 1.1
0.8 1.5
1.0 1.8
1.2 2.2
1.4 2.5
1.6 2.9
1.8 3.3
2.0 3.6
) subject to pipe length and diameter
pipe
15 x 1 18 x 1
0.1 0.2
0.3 0.4
0.4 0.6
0.5 0.8
0.7 1.0
0.8 1.2
0.9 1.4
1.1 1.6
1.2 1.8
1.3 2.0
) subject to pipe length and diameter
pipe
Pipework volume (V
pipe
Pipework diameter in inches
1
0.6
1.2
1.7
2.3
2.9
3.5
4.1
4.6
5.2
5.8
Pipework volume (V
pipe
Pipe diameter in mm (copper pipe)
22 x 1 28 x 1.5
0.3
0.6
0.9
1.3
1.6
1.9
2.2
2.5
2.8
3.1
Inspection and maintenance
) in litres
1¼ 1½
1.0 1.4
2.0 2.7
3.0 4.1
4.0 5.5
5.1 6.9
6.1 8.2
7.1 9.6
8.1 11.0
9.1 12.4
10.1 13.7
) in litres
35 x 1.5
0.5 0.8
1.0 1.6
1.5 2.4
2.0 3.2
2.5 4.0
2.9 4.8
3.4 5.6
3.9 6.4
4.4 7.2
4.9 8.0
9
2
2.2
4.4
6.6
8.8
11.0
13.2
15.4
17.6
19.8
22.0
45 x 1.5
1.4
2.8
4.2
5.5
6.9
8.3
9.7
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