MO DUO / CLOU DUO User Instructions 2 english
2. Requirements for Operating Your Wood-Burning Stove
2.1. External combustion air supply
Every combustion process requires oxygen. This oxygen is extracted from the environment of the heating
appliance.
The exterior shell of modern buildings is very dense. As a result, insufficient fresh combustion air flows in,
making an external supply of combustion air essential. This is also important if ventilation systems are used in
the house.
Some appliance types may also be connected via the floor.
A pipe or hose with Ø125mm must be used to connect the external combustion air supply. The length of the
pipe should not exceed 5m. This connection pipe may con-
tain a maximum of three elbows.
If connected directly to the external wall, attention must be
paid to the formation of condensate and to
the provision of wind protection at the inlet.
A lack of combustion air can cause poor combustion, in-
creased soot formation and increased ash incidence.
2.2. Connection to the chimney
The information contained in this manual is of a general na-
ture. National and European standards, local and building
regulations, and fire safety provisions must also be observed
and complied with.
The stove must be connected to a flue approved by the
chimney sweep. Care must be taken to prevent condensa-
tion from entering the stove.
The flue pipe must be connected in line with
the technical data sheet. If you have any questions, please contact your dealer.
• The chimney must be laid out according to the technical data of the stove (see section: Technical
Data).
• The horizontal length of the flue gas pipe should not exceed 2.5 m.
• A maximum number of 3 x 90° elbows should not be exceeded. Each elbow should be provided with
a cleaning aperture.
• The chimney must be resistant to condensation.
• The chimney must provide at least 3-12 Pa draught to ensure the flue gases are sufficiently extracted,
even in the event of a power failure.
