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5.6
Firing rates
During operation, burner output varies within a minimum and a
maximum limit.
MINIMUM OUTPUT: can drop down to: 75 kg
MAXIMUM OUTPUT must be within the firing rate (Fig. 2).
When the burner operates with only one or two
nozzles, the pressurization conditions are im-
proved and no problems arise.
ATTENTION
5.7
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. 3).
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 267 standard.
Technical description of the burner
Thermal power
11
GB
The FIRING RATE was obtained with an ambient
temperature of 20°C and a barometric pressure of
1000 mbar (approx. 100m above sea level), with
the combustion head adjusted as shown on page
ATTENTION
21.
In Fig. 3 you can see the diameter and length of the test
combustion chamber.
Example:
Output 650 Mcal/h (407 kW): diameter 60 cm - length 2 m.
MODULATING RATIO
The modulating ratio, obtained in test boilers according to
standard (EN 267) is 4:1.
D2803
Working field:
limit
safety
kg/h
kW
Fig. 2
D497
20184179
Fig. 3
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