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5.9.3
Gas train
Approved according to standard EN 676 and provided separately
from the burner.
To select the correct gas train model, refer to the supplied "Burn-
er-gas train combination" manual.
5.9.4
Gas train installation
Disconnect the electrical power using the main
switch.
DANGER
Check that there are no gas leaks.
Pay attention when handling the train: danger of
crushing of limbs.
5.9.5
Gas pressure
Tab. H indicates the pressure drops of the combustion head and
gas butterfly valve, on the basis of the burner operating output.
The values shown in Tab. H refer to:
–
Natural gas G 20 NCV 9.45 kWh/Sm
–
Natural gas G 25 NCV 8.13 kWh/Sm
Installation
20136614
3
3
(8.2 Mcal/Sm
);
3
3
(7.0 Mcal/Sm
).
Make sure that the gas train is properly installed
by checking for any fuel leaks.
The operator must use the required equipment
during installation.
The gas train is set up to be connected to the burner by the flange
2)(Fig. 13).
kW
G 20
8000
4.8
9000
6.1
10000
7.5
11000
9.1
12000
10.8
13000
12.7
14000
14.7
15000
16.9
16000
19.2
17000
21.7
18000
24.3
19000
27.1
20000
30.0
19
GB
1
2
1 p (mbar)
2 p (mbar)
G 25
G 20
6.7
2.2
8.5
2.8
10.5
3.5
12.7
4.2
15.1
5.0
17.7
5.9
20.6
6.9
23.6
7.9
26.9
9.0
30.3
10.1
34.0
11.3
37.9
12.9
42.0
4.0
Fig. 18
G 25
3.2
4.1
5.0
6.1
7.2
8.5
9.8
11.3
12.8
14.5
16.2
18.1
20.0
Tab. H
20136081
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