Ι
10
4.1.3 Method of adjusting air quantity
Setting the air regulator is dependent on how the screw (with which air
regulation is adjusted) is installed. If the air intake is installed underneath
as shown in illustration Ι,turningthescrewclockwisewillreduceairow,
and anticlockwise increase it.
4. BASIC SETTINGS
4.1.1 Nozzle assembly adjustment
Theburneristtedwitharegulatorwhichchangesthebrakeplateposition
in the blast tube. This is used to set the amount of recirculation to obtain
a good combustion without pulsations.
The best setting for achieving low emissions is, among other things, dependent
on the output settings and overpressure in the boiler.
Brake plate setting - Less diffusion: turn screw to left.
- More diffusion: turn to right.
The brakeplatepositionaffectstherecirculationow.Itisthereforeimportant
to check start and running stability after making an adjustment.
4.1.2 Air intake adjustment
Air settings are very important for achieving good combustion with
neithertoomuch,nortoolittle,air.Adjustmentofcombustionairowis
carried out by turning the air regulator with an Allen key. How far open
the air regulator must be is determined by output, furnace pressure and
other burner settings.