Firing Rates; Minimum Furnace Dimensions - Riello RS 70 E Installation, Use And Maintenance Instructions

3.7

Firing rates

During operation, burner output varies between:
• MAXIMUM OUTPUT, selected within area A (Fig. 3);
• MINIMUM OUTPUT, which must not be lower than the minimum
limit in the diagram.
Model
RS 70/E
RS 100/E
RS 130/E
NOTE:
In order to utilize also area B (RS 130/E) it is necessary to perform
the calibration of the combustion head as explained on page 19.
The firing rate area values have been obtained
considering an ambient temperature of 68 °F (20
°C), and an atmospheric pressure of 394 "WC
and with the combustion head adjusted as shown
WARNING
on page 20.
NOTE:
The firing rate areas given in Fig. 3 have been reduced by 10% with
respect to the maximum range that can be reached.
Consult Procedure on page 10 to refer burner operating condition
in high altitude plants.
3.7.1

Minimum furnace dimensions

The firing rates were set in relation to certified test boilers.
Fig. 4 indicates the diameter and length of the test combustion
chamber.
Example:
output 2579 MBtu/hr - diameter = 24 inch - length 6.6 ft
Technical description of the burner
MBtu/hr
512
568
607
Diameter (inch)
RS 70/E
RS 100/E
RS 130/E
9
Fig. 3
Fig. 4
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