8
-
If you need a horizontal segment, it should not exceed 1.5 m in length and a slope of 3 to 5% in order to help drain the
smoke;
Use the back part which is resistant to wind and water in order to prevent change of state of a slightly higher pressure in
the stovepipe (do not put a horizontal part at the end of the stovepipe);
The state of a slightly higher pressure in the stovepipe is needed to facilitate the flow of smoke from the combustion
chamber.
Keep in mind that any removal of excess heat is done by the electric control part (modulation, shutting down, etc.)
-
The exhaust duct must be made of materials that are resistant to combustion products and moisture (a review will
enable the removal of any moisture);
-
Ducts must be manufactured in a way as to prevent any leakage of smoke.
-
The duct must be isolated, especially the outer part, which is exposed to atmospheric conditions.
using fully horizontal segments
Figure 2.3: Exhaust duct
The room in which the heating device will be assembled should not have hoods because they can reduce the pressure
of the surrounding area.
It is strictly prohibited to close the air vents.
The exhaust duct should be cleaned at least once a year; we recommend that you perform a thorough cleaning of the
exhaust duct and its connections.
ignition after a period of inactivity.
⚠
ATTENTION: The exhaust duct must be built in accordance with the provisions of the standard
.
⚠
ATTENTION: Check if the chimney has a minimum pulling power of 10 Pa using the appropriate tools.
Smoke exhaust to the outer wall
One of the solutions that can be applied includes storing the furnace that uses wood pellets near the outer wall of the
house so that the exhaust fumes are directly released outside (Figure 2.4). Some of the notes set forth by the standard for
this type of system configurations are listed below:
-
Always make sure that there is an inspection valve (I) in order to enable regular cleaning procedures, as well as the
removal of moisture which can be formed;
-
The end of the funnel (T) must be such that it is resistant to wind and water;
-
Make sure that the stovepipe is properly insulated in the part that passes through the wall.
If the stovepipe for draining the exhaust gases is completely outside, it must be made of a double stainless steel wall to
provide greater resistance to atmospheric conditions, as well as proper temperature of the exhaust gases themselves.
Draining smoke to the roof through a traditional funnel
Furnace exhaust fumes can be removed through a traditional funnel that is already built-in (Figure 2.5), if it meets the
applicable Standards and features the main characteristics of a good funnel (C), which are briefly listed below:
-
Proper insulation, first in the outer part which is exposed to the atmospheric conditions;
-
The constant inner radius (there cannot be segments with a smaller radius);
-
It must be made of a material which is resistant to high temperatures, to the effects of the combustion products and
to the corrosive effects of moisture which may be formed;
-
A mostly vertical position without deviating from the vertical angles greater than 45 °.
It is recommended that the base of the funnel is equipped with a chamber for collecting solid matter and moisture (R).
The chamber must be accessible through a hermetic door (I).
Содержание LUCA 12
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