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5.2.5.
Burner’s operating algorithm
The burner starts its nominal operation if the following conditions are
fulfilled:
The main unit of the burner is installed at the heat energy consumer
appliance;
Available power supply;
Start signal is available (the “START” indicator is lit);
No alarm signals are available;
The fuel transport auger is charged and filled with fuel and bunker is
charged with fuel as well;
If the above described conditions are satisfied, then the control board performs
operations as follows:
The fuel transport auger is activated, the electric heater is activated and
air fan are running simultaneously;
After a factory set (predefined) period of time has ran out, (during this
period the so called “initial fuel” mass has been charged to the
combustion chamber), the electric motor of the fuel transport auger will
be stopped (the ignition heater is active however);
After certain period of time the photosensor of the burner should
recognize stable combustion process by the emitted visible light and the
electrical ignition element will be switched off. This is followed by
graduate increment of the thermal capacity (i.e. the fuel flow rate) of the
burner and after certain period of time the nominal thermal capacity will
be reached. In case that the photosensor does not sense intensive light,
i.e. there is no combustion process, or it is rather lean, than the control
board of the burner will initiate new attempt to start the burner, the
above described cycle will be repeated. The total number of ignition
start trials is however limited. In case that this limit has been passed,
then burner will go into alarm mode and will not function until manual
assistance is performed (for example bunker’s charge with fuel, solving
a problem, etc.) and the burner is restarted;
In case that the fuel has been ignited, the burner goes into nominal
operation mode, which is performed by periodic fuel transport to the
combustion chamber of the burner, followed by a certain interval,
utilized for fuel combustion. The periods for fuel charge and
