2431
3
GB
WORKING RANGE
TEST BOILER
The working field has been defined according to DIN 4788 and EN 676 standards.
COMMERCIAL BOILERS
The burner-boiler matching is assured if the boiler is according to EN 303 and the comb ustion
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 comb ustion 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 7.7 mbar is measured with the combustion
chamber at 0 mbar using gas G20 with a net heat value of 10 kWh/m
3
(8,570 kcal/m
3
).
Pressure in the comb
ustion
c
hamber – mbar
Burner output
D5080
0
0.8
1.6
2.4
3.2
4.0
4.8
70,000
100,000
130,000
160,000
kcal/h
80
120
100
140
160
kW
180
200,000
200
220
240
Gas pressure
mbar
3
70,000
100,000
130,000
160,000
kcal/h
80
120
100
140
160
kW
Burner output
180
200,000
D5090
4
5
6
7
8
9
200
220
240
