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AIR FLOW AND FUEL ADJUSTMENT
WARNING! During commissioning operations, do not let the burner operate with insufficient air flow (danger of
formation of carbon monoxide); if this should happen, make the fuel decrease slowly until the normal
combustion values are achieved.
WARNING! the combustion air excess must be adjusted according to the values in the following chart.
ADJUSTMENT PROCEDURE FOR LIGHT OIL OPERATION
The light oil flow rate can be adjusted choosing a by-pass nozzle that suits the boiler/utilisation output and setting the delivery and
return pressure values according to the ones quoted on the table below and the diagram on Fig. 11 (as far as reading the pressure
values, see next paragraphs).
NOZZLE
SUPPLY PRESSURE
MONARCH BPS
BERGONZO A3
Recommended combustion parameters
Recommended (%) CO
Fuel
Light oil
NOZZLE
HIGH FLAME
RETURN PRESSURE
bar
20
See table below
20
11 ÷ 13
2
11.5 ÷ 13
LOW FLAME
RETURN PRESSURE
bar
bar
See table below
6 (recommended)
23
PART III: OPERATION
Recommended (%) O
2
2.9 ÷ 4.9
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