Riello BS2F-GPL - Page 46

20098824
6
GB
TEST HEAT GENERATOR
The working field has been defined according to EN 676 standard.
COMMERCIAL HEAT GENERATORS
The burner-heat generator team does not pose problems provided the generator and size of the combustion
chamber are similar to those provided for in standard EN 676.
If, on the other hand, the burner is teamed with a commercially-available heat generator and the combustion
chamber is much smaller than the size indicated in standard EN 676, you should consult the manufacturers.
CORRELATION BETWEEN GAS PRESSURE AND BURNER OUTPUT
To obtain the maximum output with natural gas, a gas head pressure of 9.3 mbar, relatively to 912 T2 model, is
measured (M2, see chapter 3.5, page 9) with the combustion chamber at 0 mbar using gas G20 with a net heat
value of 10 kWh/Nm3 (8.570 kcal/Nm3).
Pressure measured at the burner pipe coupling with the combustion chamber at 0 mbar using LPG with a
net heat value of Pci 23.000 kcal/m
3
.
Thermal power
Gas pressure in the
combustion head – mbar
0
0
2
0
4
6
8
10
12
50 100 150 200
250 kW
50.000
100.000
150.000
200.000 kcal/h
20106924
9
1
2
T
2
9
1
3
T
2
9
1
4
T
2
Thermal power
Gas pressure in the
combustion head – mbar
20106940
0
0
0
2
4
6
8
10
12
50 100 150 200
250
kW
50.000
100.000
150.000
200.000
kcal/h
14
9
1
2
T
2
9
1
3
T
2
9
1
4
T
2