ADURO H1 Mode D'emploi page 61

The optimum combustion is achieved at a constant chimney draught of 0.10 to 0.14 mbar measured in the
flue pipe above the stove. There are many factors that affect the chimney draught, including the outside
temperature, wind strength and surrounding buildings. If it is impossible to establish a sufficiently natural
chimney draught, the chimney can be fitted with a smoke extractor. If the chimney draught is too strong, a
damper can be fitted to regulate the chimney draught. Contact your local chimney sweep for more advice.
There are no requirements with respect to specific chimney heights, but a chimney must be tall enough to
provide a good draught – above 12 Pa. If the recommended chimney draught is not achieved, there may be
problems with smoke out of the door by firing.
Data for chimney calculation
Flue temperature at [20°C]
Chimney draught at testing power [mbar]/[Pa]
Flue gas mass flow [g/s]
4.1 Inadequate draught in the chimney
Hvis skorstenen er for lav, utæt eller mangelfuldt isoleret, kan der opstå problemer med skorstenstrækket If
the chimney is too short, leaks or is inadequately insulated, there may be problems with the chimney draught
(let the chimney sweep assess this). The draught should be approx. 0.10–0.14 mbar in order to provide
satisfactory combustion and prevent smoke leakage. The easiest solution to chimney problems is to install
an Aduro DraftOptimizer – for futher information, see http://www.adurofire.com/accessories/aduro-
draftoptimizer.
If the chimney sweep judges the draught to be satisfactory, but you still have problems lighting a fire, try
extending the fire lighting phase/using more thin pieces of kindling, so that the chimney gets thoroughly
warm. The chimney will not draw at optimum effect until it is warm. The fire lighting phase can be prolonged
by using a lot of kindling and 1-2 firelighters. When a layer of embers has been formed, add 2–3 dry logs.
4.2 Draft and pellet combustion
The pellet combustion is affected by the draft in the chimney. If necessary, it is important to reduce or
improve the draft with a damper in the chimney or with a draft optimizer.
Aduro DraftOptimizer can connect to Aduro H1 and adjust automatically to ensure optimal draft. Read more
on www.adurofire.com.
4. The chimney
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