Burner Dimensions; Firing Rates - Riello RDB2.2 15-21 Installation, Use And Maintenance Instructions

4.4

Burner dimensions

Flange
180
130
150
D6114
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.
4
3
2
744T1K
1
0
12 14 16 18
1.2 1.5
2903104
Technical description of the burner
744T2K
20 22 24 26 28 30
2
2.5
136 150
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-
prox. 0 m above sea level) and with the combus-
WARNING
tion head adjusted as shown on page 20.
744T5K
32 34 36 38 40 42
3
3.5
10 GB
Burner
50
20
44 46 48 50 52
4
4.5
207
Fig. 2
D7101
54 56
kW
kg/h
Fig. 3