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6. TECHNOLOGY AND SAFET Y FUNCTIONS
The technological advances in your new combi stove are the result of years of
testing and practical experience. The practical advantages of your pellet/log
stove are convincing:
The range of operating modes leaves nothing to be desired. The automatic fuel
detection means the operating mode can be changed at any time (simply add
logs during pellet operation or ignite logs with the pellet burner).
Manually regulated currentless log operation is also possible. This ensures
faultless operation even in the case of longer power cuts.
Operating comfort
The microprocessor-controlled combustion regulation optimises the interaction
of flue gas blower, air flap position and screw using the current combustion
chamber temperature. This guarantees optimum combustion and operating
status in both pellet and log operation.
All function can be regulated centrally using the integrated touch display. The
intuitive graphic interface permits easy operation; all the settings can be made
quickly and simply.
Top eff iciency - lowest emissions
A very great heat exchange surface together with optimum combustion air
control leads to excellent fuel utilisation.
Fine continuous pellet dosing in an optimised burner pot made of high-quality
grey cast iron leads to virtually complete combustion with very good exhaust
gas values - and this is guaranteed in every operating phase.
The combination of temperature-controlled automatic air regulation and
optimised wood retainer geometry enable combustion with minimum emissions
at top efficiency in log operation.
Note
During operation, the flame noise, pellets dropping and actuation of the
electronic components are audible due to the automatic control.
Note
The innovative technology of our combination stove INDUO offers you a
maximum of heating comfort, depending on the availability of the fuel the
stove can be heated with pellets and / or logs without any modification.
Both cases are solid fuels that can cause a fogging of the door glass during
the combustion, particularly with the very fine ash from wood pellets.
By external influences such as chimney draft or pellet quality this coating can
be very bright or dark black (especially with low power ). This is a natural
process and is not a shortage.
We therefore recommend regular cleaning of the door glass, just because
soot is an excellent insulator and thus the heat dissipation can be reduced.
If the stove is heated according to its function in the combined operation, a
significant improvement can be achieved due to the higher temperatures in
log wood mode.
Burnback and flue gas flaps
The combi stove safety concept is based on double safeguards. If faultless
operation is no longer ensured due to a component defect or power cut,
the burnback flap in the pellet chute is released. This directly interrupts the
connection between the pellet container and push in screw. Thus preventing
pellet burnback. Closing the burnback flap at the same time opens the flue gas
flap thus ensuring safe burning off of the fuel in the combustion chamber.
Note
Check with every maintenance / cleaning the correct operation of the flue
flaps.
Overheating
A safety temperature limiter (STL) switches the stove off automatically on
overheating. Once the stove has cooled, the STB at the stove rear must be
unlocked manually (pressed). The stove is ready for operation again after
acknowledging the error message at the touch display and activating the
burnback and flue gas flap (see ACTIVATING THE BURNBACK AND FLUE GAS
FLAP). The operating mode set is retained.
Note
Maintenance and cleaning work must be performed if overheating occurs! If
this error recurs, operation without danger is no longer guaranteed; notify
customer service immediately.
Low-temperature shutdown
The unit switches off if the stove cools below a minimum temperature. This
switch-off may occur if pellet ignition is delayed.
Electrical excess current protection
The stove has a main fuse (at the rear) to protect against excess current.
Automatic cleaning cycle
The speed of the flue gas fan is increased every hour for a short period to blow
ash from the burn pot, increasing the operational safety. The status indicator
CLEANING appears on the display.
Every 5 hours (interval adjustable) an additionally automatic cleaning cycle
is performed. The stove stops, the automatic cleaning tilts the grid and then
re-ignites the stove. The status indicator CLEANING appears on the display
continuously. The cleaning procedure with tilting the grid is to convey ash and
clinker from the burn pot into the ash drawer.
Note
At runtime of the cleaning cycle occures a noise due to the turning grid (stove
start or big cleaning).
Note
This additional function does not replace a manual cleaning as described in
CLEANING and MAINTENANCE, as this is absolutely necessary to do regularly.
Component monitoring
All the electrical components used are continuously monitored during operation.
If a component is defective or can no longer be actuated correctly, then
operation is stopped and a warning or error message is issued (see MANUAL
TOUCH DISPLAY).
Auger motor monitoring
Too long or wet pellets as well as pellets with too high dust content (see
BRIEF INFORMATION ON FUEL PELLETS) can cause so-called "auger jammers"
in the auger channel. This may also happen if the pellets accumulate in the
burn pot and the backlog reaches into the chute. The auger motor reacts in
both cases with an increased current consumption, which causes the error
message: INSERTION MOTOR JAMMED. The stove will be stopped. Please call
the customer service immediately.
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