Riello GI/EMME 1400, Manual

Page: 12 / 80

20162463 10 GB
Technical description of the burner
4.7 Firing rates
The MAXIMUM OUTPUT is chosen from within the continuous
diagram area (Fig. 2).
The
MINIMUM OUTPUT must not be lower than the minimum
limit of the diagram:
GI/EMME 1400 = 415 kW
GI/EMME 2000 = 590 kW
GI/EMME 3000 = 890 kW
GI/EMME 4500 = 1190 kW
4.8 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 676 standard. In Fig. 3 you can see the diameter and length of the test
combustion chamber.
Example:
Output 7000 kW - diameter 120 cm - length 6 m
MODULATING RATIO
The modulating ratio, obtained in test boilers, according to
standard (EN 676 for gas, EN 267 for light oil), is of 4:1 for light
oil and 7:1 for gas.
ATTENTION
The firing rate value (Fig. 2) 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
shown on page 19.
Combu
sti
on chambe
r pre
ssu
re
mb
ar
Thermal power
Fig. 2
kW
Mcal/h
S8802
Fig. 3
Combustio
n ch
amber
m
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