Errors during the construction of system chimneys
Certain errors should be avoided in order to have a fully functioning chimney system. Below, we present the most common mistakes such as leaning ceilings against a chimney or the connection of several heating units to a single emissions channel.
The 10 most common mistakes made during the construction of chimney systems:
- The leaning of ceilings or other building construction elements against a chimney. Dilatation from flexible materials as necessary.
- Emissions channels adjacent to flammable elements of roof construction, which leads to the danger of fire.
- Connection of two heating units to the same emissions channel. This does not apply to Hoch TURBO chimney systems for furnaces with a closed combustion chamber.
- Improper diameter of the emissions channel - may lead to a backup of emissions in connection with a worsened chimney system draft.
- Improper installation of the steel flue - vertical section of an emissions pipe, which should be at angle of at least 5% and cannot be longer than 2 m.
- Missing or poor sealing of the steel flue in a ceramic emissions T-pipe; a proper expansion gap must be maintained, which should be filled with a ceramic cord.
- No drain to channel condensation to a sewage system (in the case of liquid fuels or fireplace with a water jacket). This may lead to an unpleasant odour inside premises.
- Leaky clean-out hatch – danger of indoor smoke.
- Chimney finishing or masonry with porous brick. Full class 500 brick is recommended.
- Overly shallow insertion of chimney flashing under roofing - this may cause leakage, particularly in wavy roofing.