Clou Pellet / Clou Compact Pellet User instruction 6 English
2 System requirements
External combustion air supply
Every combustion process requires oxygen. This is extracted from the ambient air.
In modern buildings, the outer shell (windows and doors) is very tight. This means that insufficient
combustion air flows in. In such cases, the firebox must be supplied with combustion air from outside.
For this purpose, your stove is equipped with a connection for external combustion air. If a house is
equipped with ventilation systems, an external air connection is also necessary.
Your pellet stove is prepared for this (see the technical data in this manual). To connect the external
combustion air supply, use a pipe or hose with a minimum diameter of 80 mm. If the pipe exceeds 2 m
in length, the diameter should be at least 100 mm. The maximum length of the duct should not be
more than 3 m and have a maximum of three elbows.
When connecting directly to the outside wall, it is
important to ensure that condensation does not
form in the process. Austroflamm offers appro-
priate components for this purpose. Further-
more, the supply air spigot on the air inlet on the
outside wall of the building must be protected
against the wind.
NOTE: A lack of combustion air is evidenced by
poor combustion, increased soot formation,
blackened glass of the firebox door and in-
creased ash accumulation.
Connecting to the chimney
When connecting to the chimney, local and
building regulations along with fire regulations
must be observed in addition to national and Eu-
ropean standards.
The stove may only be connected to a chimney approved by the chimney sweep. Condensation must
be prevented from entering the stove.
See sections 10 and 11 Technical Data.
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