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3.8
Firing rate
The MAXIMUM OUTPUT is chosen from within the continuous
diagram area (Fig. 3).
The MINIMUM OUTPUT must not be lower than 1500 kW as
indicated in the diagram (Fig. 3).
250°C
150°C
50°C
0
3.9
Test boiler
The burner/boiler combination does not pose any problems if the
boiler is EC approved and its combustion chamber dimensions
are similar to those indicated in the diagram (Fig. 4).
If the burner must be combined with a boiler that has not been EC
approved and/or its combustion chamber dimensions are clearly
smaller than those indicated in the diagram, consult the
manufacturer.
The firing rates were obtained in special test boilers, according to
EN 676 standard.
Technical description of the burner
1500
5000
Thermal power
The firing rate value (Fig. 3) has been obtained
considering an ambient temperature of 20 °C, an
atmospheric pressure of 1013 mbar (approx. 0 m
a.s.l.), and with the combustion head adjusted as
ATTENTION
shown on page 26.
7150
8600
9500
In Fig. 4 you can see the diameter and length of the test
combustion chamber.
Example:
Output 7000 kW - diameter 120 cm - length 6 m
MODULATING RATIO
The modulating ratio, obtained in test boilers, according to the
norm (EN 676 for gas, EN 267 for light oil), is 1:5 for gas and 1:4
for light oil.
9
GB
D3976
DB9
kW
D2448
Fig. 3
Fig. 4
20169350
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