20027766
10
GB
Technical description of the burner
4.8
Firing rates
MAXIMUM OUTPUT
must be selected in the hatched area of the
diagram (Fig. 3).
MINIMUM OUTPUT
must not be lower than the minimum limit
shown in the diagram.
4.9
Test boiler
The burner/boiler matching does not pose any problems if the
boiler is CE type-approved and its combustion chamber dimen-
sions are similar to those indicated in diagram (Fig. 4).
If the burner must be combined with a boiler that has not been CE
type-approved and/or its combustion chamber dimensions are
clearly smaller than those indicated in diagram (Fig. 4), consult
the manufacturer.
The firing rates were set in relation to special test boilers, accord-
ing to EN 676 regulations.
Fig. 4 indicates the diameter and length of the test combustion
chamber.
Example:
Output 3000 kW
diameter 100 cm
length 4 m
MODULATION RATIO
The modulation ratio, determined using test boilers according to
standard (EN 676 for gas, EN 267 for light oil), is 2.5 : 1.
WARNING
The firing rate area values (Fig. 3) have been ob-
tained considering a surrounding temperature of
20 °C, and an atmospheric pressure of 1013 mbar
(approx. 0 m above sea level) and with the com-
bustion head adjusted as shown on page 20.
Fig. 3
400
1200
2000
2800
3600
4400
0
2
4
6
8
10
12
14
16
18
20
5200
6000
6800
7600
22
Thermal output -
kW
Pressure in
combu
s
ti
on chambe
r
mba
r
Class 3 EN676
Class 1 EN267
Class 3 EN676
Class 2 EN267
D10528
Fig. 4
D1637
C
o
mbustion
cha
m
ber
m
Summary of Contents for RLS 650/E MX
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