2.3 FIRING RATE,
8.0
6.4
4.8
3.2
1.6
0
150
170
D4357
130.000
TEST BOILER
The working field has been defined according to EN 676 standard.
COMMERCIAL BOILERS
The burner-boiler matching is assured if the boiler is according to EN 303 and the combustion chamber
dimensions are similar to those shown in the diagram EN 676.For applications where the boiler is not
according to EN 303, or where the combustion chamber dimensions differ from those shown in EN 676,
please consult the manufacturers.
CORRELATION BETWEEN GAS PRESSURE AND BURNER OUTPUT
To obtain the maximum output, a gas head pressure of 10.7 mbar is measured (M2, see chapter 3.5, page 6)
with the combustion chamber at 0 mbar using gas G20 with a net heat value of 10 kWh/m
11
10
9
8
7
6
5
4
3
2
150
170
D4436
130.000
3087
(as EN 676)
190
210
230
170.000
190
210
230
170.000
210.000
250
270
290
210.000
250.000
250
270
290
250.000
4
GB
310
330
350
290.000
Thermal power
3
(8.570 kcal/m
310
330
350
kW
290.000
kcal/h
Thermal power
kW
kcal/h
3
).