Firing Rate; Test Boiler - Riello DB6 SE C03 TC FS1 FGR T250 Installation, Use And Maintenance Instructions

4.6

Firing rate

The MAXIMUM OUTPUT is chosen from within the continuous
diagram area (Fig. 1).
The MINIMUM OUTPUT should not be less than 1400 kW as
shown in the diagram (Fig. 1).
250° C
150° C
50° C
4.7

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. 2).
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
0 1400
Thermal power
The firing rate value (Fig. 1) 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 21.
4000 5850
Thermal power
In Fig. 2 you can see the diameter and length of the test combus-
tion chamber.
Example:
Output 4000 kW - diameter 100 cm - length 5 m
MODULATING RATIO
The modulating ratio, obtained in the test boilers in accordance
with current standards (EN 676 for gas), is 1:5.
9 GB
D8871
DB6
kW
6600
7800
D2448
Fig. 1
Fig. 2
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