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2.4 FIRING RATE
5.0
4.0
3.0
2.0
1.0
0
– 0.5
10
20
D6220
16,300
TEST BOILER
The working field has been defined according to EN 676 standard.
COMMERCIAL BOILERS
The burner-boiler matching is assured if the boiler conforms to EN 303 and the combustion chamber dimensions
are similar to those shown in the diagram EN 676. For applications where the boiler does not conform to EN 303,
or where the combustion chamber is much smaller than the dimensions given in EN 676, please consult the man-
ufacturers.
CORRELATION BETWEEN GAS PRESSURE AND BURNER OUTPUT
To obtain the maximum output, a gas head pressure of 4.6 mbar, relatively to type 52216X, is measured with the
combustion chamber at 0 mbar using gas G20 with a net heat value of 10 kWh/Nm
5
4
3
2
1
0
10
20
D6221
16,300
(as EN 676)
30
40
50
34,400
30
40
50
34,400
60
70
80
51,600
68,800
60
70
80
51,600
68,800
3
GB
90
100
110
86,000
Thermal power
3
.
90
100
110
kW
86,000
kcal/h
Thermal power
kW
kcal/h
20067072
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