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20040170
10
GB
Technical description of the burner
4.8 Firing rates
The
MAXIMUM OUTPUT
is chosen from within the continuous
diagram area (Fig. 3).
The
MINIMUM OUTPUT
must not be lower than the minimum
limit of the diagram:
RLS 1000/EV C13 = 3750 kW
RLS 1200/EV C13 = 5500 kW
4.9 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 ap-
proved and/or its combustion chamber dimensions are clearly small-
er than those indicated in the diagram, consult the manufacturer.
The firing rates were set in relation to special test boilers, accord-
ing to EN 676 regulations.
In Fig. 4 you can see the diameter and length of the test combus-
tion chamber.
Example:
Output 7000 kW - diameter 120 cm - length 6 m.
MODULATING RATIO
The modulating ratio, obtained in the test boilers, according to
standard (EN 676 for gas, EN 267 for light oil), is of 4:1
WARNING
The firing rate value (Fig. 3) has been obtained
considering an ambient temperature of 20C, an
atmospheric pressure of 1013 mbar (approx. 0 m
a.s.l.), and with the combustion head adjusted as
shown on pag. 20.
1000 1800 2600 3400 4200 5000 5800 6600 7400 8200 9000 10600
0
2
4
6
8
10
12
14
16
18
20
22
24
26
9800 11400 12200
D11552
Co
mb
ustion chamb
e
r
pressure -
mba
r
Thermal power –
kW
Fig. 3
RLS 1200/EV C13 RLS 1000/EV C13
Fig. 4
Co
mb
usti
on chambe
r
M
D2448