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4.4
Burner dimensions
Flange
189
106
140
168
4.5
Firing rates
The MAXIMUM OUTPUT is chosen from within the diagram area
(Fig. 3).
The MINIMUM OUTPUT must not be lower than the minimum
limit of the diagram.
The burner delivery must be selected within area of the diagrams
(Fig. 3). This area is called firing rates and provides the maximum
delivery of the burner in relation to the pressure in the combustion
chamber.
3.20
2.80
2.40
2.00
1.60
1.20
0.80
0.40
0.00
-0.40
3.4
D7255
41
Technical description of the burner
163
BF
4.4
5.4
6.4
71
51
61
Burner
167
The work point may be found by plotting a vertical line from the
desired delivery and a horizontal line from the pressure in the
combustion chamber. The intersection of these two lines is the
work point which must lie within the firing rates.
The firing rate area values have been obtained
considering a surrounding temperature of 20 °C,
and an atmospheric pressure of 1013 mbar (ap-
WARNING
prox. 0 m above sea level) and with the combus-
tion head adjusted as shown on page 19.
CF
8.4
7.4
81
101
91
9
GB
69.5
32
9.4
10.4
Fuel output - kg/h
111
121
Thermal power - kW
253
D4267
Fig. 2
Fig. 3
3226
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