16
9. Description of the components
9.1 Storage container (pellet tank)
17 kg of wood pellets can be stored in the storage
container. This quantity permits constant operation for
up to 30 hours.
9.2 Screw conveyor motor / screw conveyor
The screw conveyor motor drives the screw conveyor.
This delivers the wood pellets from the storage container
to the combustion chamber (combustion pot). The screw
conveyor motor’s rotation speed is regulated and it
therefore delivers the required supply quantity to the
modular heat output (2.5 kW to 8 kW).
If the screw conveyor becomes blocked because of
foreign bodies in the wood pellets or a too-high level of
fine particles, it can often be unblocked by simply
moving the screw conveyor motor housing back and
forth. To do this, you must first remove the back wall by
pulling it down. (See Figure 1, no. 7).
L
Attention!! First pull out the mains
plug!
Any fault with the screw conveyor motor is detected by
the control unit and this initiates the cooling down phase.
Figure 10: Screw conveyor motor
1 = Screw conveyor motor
2 = Condenser
3 = Thermosensor, flue gas
4 = Induced draught fan
5 = Overheat cutout
6 = Master switch
7 = Mains socket
8 = Heat exchanger
9 = Outside air connection
9.3 Combustion pot with tray:
The combustion pot is made of high-grade stainless
steel. The special design of the combustion pot
guarantees clean and extremely efficient combustion of
the wood pellets.
Figure 11: Combustion pot correctly installed
9.4 Electric ignition
The built-in electric ignition is made of stainless steel
(see Figures 13+14) and generates the ignition
temperature required to ignite the wood pellets. The
period during which ignition is activated depends on how
quickly the required flame temperature is reached so
that the system can switch from the Ignition phase to
Heating mode. The average ignition glow time is 10 to
12 minutes (depending on pellet quality). The ignition
phase is restricted to a maximum time of 20 minutes and
therefore the maximum ignition glow time is also
restricted to 20 minutes. Depending on the fuel quality,
the flame should be formed in 3 to 7 minutes.
