Firing Rate; Test Boiler - Riello DB 2 LSE FGR Installation, Use And Maintenance Instructions

3.8

Firing rate

The MAXIMUM OUTPUT should be chosen within area
A)(Fig. 3) of the diagram.
The MINIMUM OUTPUT must not be lower than the minimum
limit of the diagram (Fig. 3).
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 manufac-
turer.
The firing rates were set in relation to special test boilers, accord-
ing to EN 676 regulations.
Technical description of the burner
Thermal power
Thermal power
9 GB
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
WARNING
shown on page 19.
In Fig. 4 you can see the diameter and length of the test combus-
tion chamber.
Example:
Output 2000 kW - diameter 80 cm - length 3.3 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 light oil and
1:4 for gas.
S9787
Fig. 3
D2448
Fig. 4
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