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4.4
Burner dimensions
Flange
180
130
150
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.
The work point may be found by plotting a vertical line from the
4
3
2
744T1R
1
0
12
14
16
18
1.2
1.5
D7347
Technical description of the burner
BF Version
744T3R
20
22
24
26
28
30
2
2.5
136
150
136
150
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.
32
34
36
38
40
42
3
3.5
9
GB
Burner
86
20
86
20
744T5R
44
46
48
50
52
54
4
4.5
CF Version
207
D4592
207
ø 75
S8266
Fig. 2
56
kW
kg/h
Fig. 3
3261
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