12
45º
45º
Fig. 10
–
Correct
angle for bends
Fig.11
–
Incorrect
angle for bends
* A single-walled tube installed on the outside of a building results in the
condensation of water vapour in the combustion gases. We therefore
recommend the use of a double
– walled insulated pipe;
* The flue outlet should allow for good air circulation and be placed at least 23.6
inches (60cm) above the top of any obstacle located within a distance of 9.8 feet
(3m);
* Brick chimneys should not be too wide, as the smoke will cool as it disperses,
reducing the draft. In case of draft problems, a revolving chimney cowl can be
installed;
* The same flue should not be used for more than one unit or open fireplace;
* With shared chimneys, each flue should reach its outlet independently and
these should be at the same level to ensure that the air circulation expels the
gases;
45º
45º
45º
