Cast LAVA Podręcznik użytkownika - Strona 6

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dirty glass, boiling handle

smoke coming out into the room

4.1 General characteristics

To facilitate the draught in the flue, the chimney must be rising at least one metre above the ridge of the

roof. The surrounding objects must not cover the flue.

The dimensions of the chimney may vary on the basis of the model of flue. However, to guarantee good

disposal of the fumes, the section of the air passage at its exit must always be twice the size of the section

of the flue itself, and furthermore the cap of the chimney must never obstruct the draught.

The chimney guarantees the conveyance of the fumes outwards even when there are strong horizontal

winds and stops them from being blown back down the chimney.

Bad maintenance of chimney is the cause of flue obstruction, due to the breaking and detachment of

plaster, refractory bricks etc. of which the flue is made, as well as due to the combustion product deposits

and intrusion of foreign objects.

Chimney must have sufficient heat insulation, otherwise it can lead to condensation.

The internal parts of the whole flue should have a smooth surface, and the material used should be

refractory and resistant to their degree of acidity, and should be impermeable to gases.

4.2 Chimney recommendations

The internal part of the whole flue should have a smooth surface, and the material used should be resistant

to heat and impermeable to gases.

Height of the flue

5 m

10 m

15 m

4.3 Connection of the stove to the flue

The metal tube connecting the stove to the flue must never have a smaller diameter than the outlet hole of

the appliance.

Round section

cm. 20/22

cm. 18/20

cm. 15/16

Square section

cm. 20 x 20

cm. 18 x 18

cm. 16 x 16