van steven zo 27 nov 2011 - 14:15
In the “Ignition phase” the grate is filled with a precisely defined quantity of fuel and this quantity of fuel is ignited with a glow igniter.
The “Ignition phase”, which is divided into 10 zones, is ended after reaching a precisely defined temperature on the “flame temperature sensor” and the control unit switches to “Heating Mode” operating status.
The duration of the “Ignition phase” may vary but it is restricted to a maximum length of about 20 minutes.
If during these 20 minutes no flame is formed or the required temperature is not reached at the “flame temperature sensor – flue gas”, a safety shutdown is initiated.
Here the rotation speed of the induced draught fan is constantly measured and checked by means of the rotation speed feedback.