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8.4. Ceramic ignition
The integrated ceramic ignition is protected against over-voltages (fuse 3.15A, fast-
acting). The ceramic ignition glows red hot when a current is applied, heating the
ignition air to the ignition temperature necessary for igniting the pellets. Ignition is ac-
tivated for 7 minutes in each start process. A flame should form after 5 minutes.
8.5. Ash slide and ash pan
The ash slide is used to push the ash in the combustion chamber directly into the ash
pan without having to open the combustion chamber door. The ash pan is gener-
ously designed, so it only has to be emptied every few months.
8.6. Flue gas fan
The flue gas fan pulls the combustion air into the combustion chamber and conveys
the resulting flue gases into the chimney. This causes a slight vacuum in the pellet
stove.
8.7. Low temperature switch
The low temperature (LT) switch is located on the flue gas fan and monitors the flue
gas temperature. It switches the pellet stove off if the flue gas temperature drops
below 60°C (pellet stove shutdown, operating malfunction, pellet tank empty, etc.).
8.8. High temperature switch
Two high temperature (HT) switches are installed in the pellet stove. They monitor the
surface temperatures on the pellet chute and side of the stove. If the critical surface
temperature is exceeded at one of these locations, the power supply to the screw
motor is cut off. The flue gas and convection air fans continue operating to ensure
combustion of the pellets remaining in the burn grate and to cool down the pellet
stove.
8.9. Convection air fan
The convection air fan pushes air through the heat exchanger pipe, which is sur-
rounded by flue gas. This forced convection ensures uniform and comfortable distri-
bution of heat in the installation room.
8.10. Differential pressure monitor
The differential pressure monitor detects any possible excess pressure in the flue gas
system. The control system switches the power supply to the screw conveyor off as
soon as the permissible excess pressure in the flue gas system is exceeded.
Excess pressure in the flue gas system may be caused by a closed chimney flap, ob-
struction in the chimney (e.g. bird's nest) or even weather conditions (gusts of wind).
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