The Chimney - Dovre 2530GA P Installation Et Mode D'emploi

3.1.

The chimney

The chimney (the flue) has a double function:
•
It draws air, that is necessary for good combustion, into the stove.
•
It functions as an exhaust pipe for combustion gases via thermal or natural
draught. Thermal draught is caused by the difference in heat between the air in-
and outside the flue. The heated air in the flue is lighter than the colder air out-
side the flue and consequently rises up, along with the combustion gases. Natu-
ral draught is caused by environmental phenomena, such as wind.
It is prohibited to connect several heaters to one chimney (for instance the central
heating boiler), unless local or national regulations allow this.
Please check which chimney is to be used for the stove you purchased and whether
your chimney is appropriate for this specific usage, and meets the applicable stan-
dards and regulations. You should consider an expert's opinion on this matter.
The chimney should meet the following conditions:
•
The flue should be made of fireproof material. Ceramic or stainless steel is re-
commended.
•
The chimney should be airtight and thoroughly cleaned and should guarantee a
sufficient draught.
•
It should run as vertically as possible. Changes in direction or horizontal seg-
ments will disrupt the smoke flow and may cause soot to cumulate inside the
flue (and clog the flue!).
•
The chimney's inside dime nsions must not be too large in order to prevent the
smoke from cooling off too much. For recommended chimney dimensions, see
the technical specification under cover. Larger dimensions can be used if the flue
is well insulated.
•
The flue's diameter should be the same throughout its whole length. Wider, or
especially narrower segments will disrupt the smoke flow and are best avoided.
The same is true for a cover plate or exhaust hood on top of the chimney. The
exhaust hood must not narrow the chimney's outlet and should be designed in a
way that wind will not hinder, but promote the smoke flow.
•
Especially if the flue runs through unheated rooms or outside the house, further
insulation is necessary. Metal chimneys, or parts of the chimney outside heated
rooms should always have double -walled, insulated flues. The part of the chim -
ney outside the roof should always be insulated.
•
The chimney should be high enough (at least 2,5 metres) and should end in a
zone that is clear of nearby buildings, trees or other obstacles.
2530GA(P)
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