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Tables 5.1 and 5.2 give detailed information about the number of LED
blinking signals and the corresponding values of the operating parameters of the
burner’s control board (according to the type of the burner) :
Symbols:
P1
– potentiometer, which defines the operating period for transporting initial
fuel doze to the combustion chamber of the burner;
P2
– potentiometer, which defines operating period for supplying fuel at
nominal load;
P3
– potentiometer, which defines operating period for running the air fan after
a STOP signal (at absence of START signal) has been received by the burner;
P4
– potentiometer, which defines operating period for ignition of the initial fuel
doze;
P5
– potentiometer, which defines operating value of the photosensor
sensitivity;
EXPLANATION :
A common criteria for the quality of a combustion process
is its natural color. In case that this color is rather dark yellow and smoke
eddies are observed, this indicates that the fuel flow rate exceeds the optimal
one for the current air flow rate and should be decreased by setting the
potentiometer on the interface board to a lower position. The air flow control
flap could be opened as well. The objective of the adjustment is to achieve stable
intensive and turbulent combustion process and minimal char/unburned residue.
In practice however, the factory preset values of the operating parameters do
not require any adjustment, even when the fuel has been changed.
