18
9.6.
Operator console
Figure 15: Operator console
9.6..1 Backlighting
The backlighting of the display is switched off 5
minutes after the operator console was last
operated.
9.6..2 Activating the backlighting
The backlighting is switched on by pressing any
key. It is only after the backlighting is activated that
the function keys are active.
The backlighting is also activated by any error
message generated.
9.7.
Induced draught fan with rotation speed
feedback
The induced draught fan generates low pressure in
the combustion chamber and thereby supplies the
required volume of air for combustion to the
combustion chamber or through the combustion
pot.
The induced draught fan is equipped with rotation
speed feedback. This permits detection of any
difference between the target and actual operating
status and countermeasures to be taken or, in the
case of greater differences, permits the stove to be
shut down (safety shutdown).
9.8.
Flame or combustion chamber temperature
sensor (combustion chamber thermosensor)
The flame temperature is measured in “Heating
mode” operating mode.
The flame temperature measured is an indicator of
the energy level in the grate and hence the basis of
the air volume required for the combustion of the
energy level located in the grate.
Here the ACTUAL flame temperature is compared
with the TARGET in combination with the processor-
regulated control unit and the appropriate combustion
air volume required for the combustion of the energy
level in the grate is supplied by means of the induced
draught fan.
9.9.
Flue gas thermosensor
The flue gas thermosensor is located on the housing
of the induced draught fan and protrudes into the flue
gas duct across the direction of the flow of the flue
gas, where the flue gas flows around it, and thus
measures its temperature and temperature change.
(See Figure 10).
With the thermosensor, the temperature and its
change can be measured directly (accurate to about
2ºC) in the flue gas and so be accessed for the
control unit and regulation.
9.10.
Room temperature sensor
The room temperature sensor measures the
ACTUAL room temperature in the area of the
stove.
The room temperature sensor is an instrument for
the TARGET
– ACTUAL comparison between the
TARGET room temperature and the ACTUAL room
temperature and is therefore the basis for the
specification of the required heat output for the
stove.
Figure 16:
1 = Mains cable
2 = OC overheat cutout
3 = temperature sensor
4 = Flue elbow 80 mm
5 = Outside air connection 40 mm
6 = Bottom of back wall
6
1
3
5
2
4
