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secondary air keeps the fire burning evenly, and the tertiary air ensures that flue gasses are burned. You
must always add secondary and tertiary air, while firing the stove.
The damper allows you to adjust the stove according to the chimney draft and the heat output you require.
The longer the damper is pulled out, the more air is added and the more powerful the combustion. The
illustration below shows the stove seen from the front with the dampers indicated. Use edge of door to read
position of inlet air:
3.1.1 Secondary air supply
In normal circumstances, the wood burning stove should be working with this damper open between 60 %
and 100 %. You should never close the air intake so far that the flames are extinguished. There should
always be visible flames in order to achieve clean and efficient combustion. A too low supply of air can lead
to bad combustion, high emissions and a bad efficiency. The air-wash system that minimizes soot collecting
on the glass panes is also adjusted by this damper.
If you want to fire the stove with the lowest effect possible – around 3 kW – you must close the secondary
damper almost completely 45 minutes after the wood has been put in. At this point there are only few flames
and the stove can burn clean by using the tertiary air from behind in the stove.
3.1.2 Primary damper
When you add a new log, the primary damper should be opened until the fire is burning properly. In order to
utilize the fuel to the fullest extent, the embers should have burnt for so long that it is necessary to open the
primary damper for approx. 2 minutes to get the new log to burn.
In order to reduce the risk of ash falling from the stove when the door is opened to add more fuel, it is a good
idea to open the primary damper for approx. 1 minute before the door is opened. This increases the draft
through the stove and reduces the risk that ash will drop on the floor.
1: Fully open primary, secondary, and tertiary air
inlet. This position can be maintained with the
Aduro key, which must be placed in the two holes.
2: Closed primary air inlet, fully open secondary
and tertiary air inlet.
3: Closed primary air inlet, half way closed
secondary air inlet, and fully open tertiary air inlet.
4: Closed primary and secondary air inlet, fully
open tertiary air inlet.
5: Regulator pushed all the way in. All air inlet
closed.
If you overload the wood burning stove and burn more than approx. 3.1 kg
wood/hour, there is a risk that the lacquered surface of the stove will become
discoloured and eventually fall off. The stove can be resurfaced, but this is not
covered by the manufacturer’s guarantee. In the same way, any other damage to
the stove caused by overloading will not be covered by the guarantee.
