20023724
4
GB
2.3 FIRING RATES
In the BS4D model type 918T1, in order to guarantee the working
with an output of 220 - 250 kW, remove the blank deadening to free the
supplementary slits of the air inlet on the cover.
TEST BOILER
The firing rate 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 dia-
gram EN 676. For applications where the boiler does not conform to
EN 303, or where the combustion chamber is much smaller than the dimen-
sions given in EN 676, please consult the manufacturers.
Thermal power
Pressure in the combustion
chamber – mbar
Thermal power
Pressure in the combustion
chamber – mbar
50 100 150 200 250
0
0.8
1.6
2.4
3.2
4.0
250.000200.000100.00050.000
10 20 30 40 50 60 70 80 90 100
0
0.4
0.8
1.2
1.6
2.0
2.4
80.00070.00060.00050.00040.00030.00010.000 20.000
kW
D8831
kcal/h
915T1
916T1
kW
kcal/h
D8832
917T1
918T1
A
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