17
Figure 13: Stainless steel ignition
9.5.
Control unit
The microprocessor
control
unit
ensures
safe,
automatic operation of the pellet stove. The control unit
controls the interaction of the components e.g. induced
draught fan, screw conveyor motor, flame temperature
sensor, room temperature sensor etc..
The pellet stove’s electrical fuses are incorporated into
the control unit.
To change these fuses you must remove the left side
wall.
Figure 14:
1. Screw conveyor motor
2. Condenser, screw conveyor motor
3. Fuse T 0,315A
4. Fuses T 3,15A
5. Backup battery
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
2
1
4
5
4
3
Summary of Contents for HSP 1.17
Page 28: ...28 14 Circuit diagram ...
