Internal Leak Test; Determining The Test Volume - Buderus Logano plus GB312 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 train
B Determine the length of pipe to the main fuel shut-off
valve.
B Determine the gas train volume (V
Tab. 19.
B Determine the pipework volume (V
and Tab. 21.
Pipework length
in metres
1
2
3
4
5
6
7
8
9
10
Tab. 20 Pipework volume (V
Pipework length
in metres
1
2
3
4
5
6
7
8
9
10
Tab. 21 Pipework volume (V
Logano plus GB312 - Subject to technical modifications.
) using
gas train
) using Tab. 20
pipe
Pipework volume (V
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
Pipework volume (V
Pipework diameter in mm (copper 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
Inspection and maintenance
B Calculate the test volume (V
above equation.
Gas train volume (approximate values)
Gas train volumes up to 50 kW
Gas train volume > 50 kW
Tab. 19 Gas train volume (V
) in litres
pipe
Pipework diameter in inches
1 1¼
0.6 1.0
1.2 2.0
1.7 3.0
2.3 4.0
2.9 5.1
3.5 6.1
4.1 7.1
4.6 8.1
5.2 9.1
5.8 10.1
) in litres
pipe
22 x 1 28 x 1.5
0.3 0.5
0.6 1.0
0.9 1.5
1.3 2.0
1.6 2.5
1.9 2.9
2.2 3.4
2.5 3.9
2.8 4.4
3.1 4.9
9
) according to the
test
0.1 litres
0.2 litres
)
gas train
1½ 2
1.4 2.2
2.7 4.4
4.1 6.6
5.5 8.8
6.9 -
8.2 -
9.6 -
- -
- -
- -
35 x 1.5 45 x 1.5
0.8 1.4
1.6 2.8
2.4 4.2
3.2 5.5
4.0 6.9
4.8 8.3
5.6 9.7
6.4 -
7.2 -
8.0 -
45