Which chimney to choice...
- Chimney types
We are offering to choice from few manufacturers products: ceramic chimney system - MK KOLEKT, stainless steel chimney system - SAURESTA, condensing gas boilers exhaust system - Almeva. A short comparison of each system is given below (table 1).Table 1.
Ceramic chimneys - MK KOLEKT
|
MK KOLEKT |
| Fuel Type |
 Coal  Wood  Gas  Pellets |
| Heating technology |
 Standard  Condensing |
| Pressure |
 --  Negative |
| Other features |
| <600oC |
| G50 |
 GERMAN ceramic |
| Ceramic (modular) chimney system for all fuel types |
Condensing flue system - almeva
|
|
STARR
FLEX
LIK
|
| Fuel Type |
 --  -- Gas  -- -- -- Gas -- -- -- Gas -- |
| Heating technology |
 -- Condensing -- Condensing -- Condensing |
| Pressure |
 Positive* Negative* Positive* Negative* Positive* Negative* |
| Other features |
|
<120oC
<120oC
<120oC
|
|
O20
O20
O20
|
 Swiss elements |
| *Almeva chimney system pressure mode depends on the diameter of the system (≤d160 - negative; >d160 - positive). |
Stainless steel flue system and chimney liners
|
|
SR-1
SR-2
SR-3
|
| Fuel Type |
|
Coal Wood Gas Pellets Coal Wood Gas Pellets Coal Wood Gas Pellets |
| Heating technology |
|
Standard Condensing Standard Condensing Standard Condensing |
| Pressure |
|
-- Negative -- Negative -- Negative |
| Other features |
|
<600oC
<600oC
<600oC
|
|
Ø100-300mm: G130
Ø350-450mm: G195 Ø550-600mm: G260
G
G
|
 LITHUANIAN elements |
| Stainless steel chimneys and flue liners |
- Chimney height
The chimney height should be high enough above the roof, to ensure the continuous draft. Chimney height significantly affects the strength of the furnace draft. Too low chimney and strong wind could lead to too weak draft, which wouldn't be enough to ensure full combustion gases removal. It is recommended to build chimney as close to the roof ridge.
If chimney is going to be built next to the building element, which is like barrier, then system should be built as shown in the picture A. The chimney height above roof parapet or ridge should be not less than 0.3 m, if roof surface is nonflammable, not less than 0.6 m - flammable. If roof is flat or roof angle is less than 12°, regardless of roof construction, chimney outlet must be at least 0.6 m above ridge. If chimney is going to be built at distance 1.5-3 m from ridge, then chimney outlet must be not lower then ridge height. If chimney is going to be built at distance 3-10 m from ridge, chimney outlet must be above imaginary line, drawn from horizontal line at 12° angle.
If chimney is going to be built next to the building element, which is like barrier, then system should be built as shown in the picture A. The chimney height above roof parapet or ridge should be not less than 0.3 m, if roof surface is nonflammable, not less than 0.6 m - flammable. If roof is flat or roof angle is less than 12°, regardless of roof construction, chimney outlet must be at least 0.6 m above ridge. If chimney is going to be built at distance 1.5-3 m from ridge, then chimney outlet must be not lower then ridge height. If chimney is going to be built at distance 3-10 m from ridge, chimney outlet must be above imaginary line, drawn from horizontal line at 12° angle.
Image A:
When the roof inclination angle is more then 12° and roof surface is flammable, chimney outlet must be built at least 0.6 m above ridge, as it's shown at image B. If roof surface is flammable, do not forget to install spark arrestor, usually it is metal mesh with openings no larger than 5x5 mm. If roof inclination angle is more then 12° and roof surface is nonflammable, chimney outlet must be built at least 0.3 m above roof and at least 1 m distance from ridge, as it's shown on picture C.
Image B:
Image C:
The height of the chimney above the roof surface:
