Setting The Burner; Setting The Combustion Assembly - Bentone BG 550 Installation And Maintenance Instruction

5. Setting the burner

5.1 Setting the combustion assembly

It may sometimes be necessary to adjust the combustion assembly, i.e. the
position of the brake plate in the burner tube.
5.1.1 Setting the combustion assembly,
The burner is equipped with a lever that changes the position of the brake
plate in the combustion head. This is used to set the correct pressure drop
across the combustion assembly and thereby obtain good combustion
without ripples.
Make the adjustment by turning screw X.
The best position is, among other things, dependent on the input power and
overpressure in the boiler.
A general rule of thumb is that the smaller the capacity, the smaller the gap
X
should be between the brake plate and the combustion assembly.
The position of the brake plate also has an impact on the quantity of air
supplied for combustion. This means that once the brake plate has been
adjusted, the combustion should be checked and, if necessary, the setting of
the air damper adjusted to obtain good combustion.
A left turn opens the brake plate, providing a lower pressure drop and more
air to the combustion process.
A right turn closes the brake plate, providing a higher pressure drop and less
air to the combustion process.
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