More and more people decide to replace their old coal boiler with a modern gas boiler. Thanks to it, you can save a lot. Of course, you also need to consider which chimney to choose for a gas furnace. Today we will present you the rules for selecting chimneys for gas boilers.
Check out chimneys for gas stoves at the Onninen wholesaler
How to choose a chimney for a gas boiler?
The chimney is undoubtedly an important element of the entire heating system. It must therefore be properly selected, because it is through it that exhaust gases are released. The parameters of the chimney should be selected to the power of the installed boiler. In addition, in the case of gas boilers, extremely strong and durable materials must be used. The best here is steel, which is resistant to mechanical damage. In addition, steel chimneys for gas boilers are characterized by high tightness. It is also worth noting that they can even be used to renovate old brick chimneys. The installation itself is not expensive either. So if you are faced with the choice of a chimney system, a model made of steel will work very well indeed. A steel chimney is also resistant to the harmful effects of condensate. Its surface is smooth, which prevents dirt from settling.
Or maybe plastic chimneys for gas boilers?
Steel chimneys are not the only solution that deserves attention. You can also choose plastic chimneys for gas boilers . They are made of plastic. Contrary to appearances, such models are also safe. They are particularly well suited for boilers with a closed combustion chamber, including condensing gas boilers. It is worth noting that such chimneys have high fire resistance. The materials used for production must of course be durable. Chimney elements made of polypropylene work very well, which work effectively even at high temperatures, most often up to 120 degrees Celsius. Polypropylene is also a relatively cheap material and does not degrade quickly, so it can serve for many years. It is resistant to UV radiation. In addition, such chimneys provide good gas tightness. Chimney systems made of PPS plastic work well even in overpressure or in wet mode. The exhaust system consists of an internal pipe and an external pipe. Such a system can be used as a chimney liner in combination with single-wall systems or as a stand-alone system.
How to choose a chimney system for a condensing gas boiler?
Condensing gas furnaces allow you to recover an additional amount of heat, which in the case of a regular furnace would be discharged through the chimney. However, you must remember to choose the right chimney system. Here, you should pay attention to:
- tightness and ability to work in wet conditions (The exhaust gases are wet and
directed into the chimney under pressure. For this reason, the chimney system must be as tight as possible). - standards and certificates held (All chimney systems must meet the most stringent standards and certificates).
- cross-section of the insert (We distinguish between round, rectangular or oval. If the chimney is square, a round insert can be placed in it, whereas if the chimney is rectangular, an oval or rectangular insert will work better).
- chimney height (Each boiler has a specific chimney height. It must be adhered to, otherwise the exhaust gases will be emitted incorrectly. In the case of condensing boilers, inserts with a diameter of 60/100 are most often used).
- the material from which the chimney is made (we distinguish between steel and plastic).
Chimneys for gas stoves in the Onninen wholesaler
The ONNLINE DN 80, L=250 flue pipe with a condensing exhaust seal for turbo and condensing boilers is worth mentioning. It is made of strong heat-resistant and acid-resistant steel. It is adapted for continuous operation even at 600 degrees Celsius. It is worth paying attention to the socket connection, which facilitates assembly. The pipe is resistant to soot fire and is intended for a closed combustion chamber.
You can also decide on a product such as a single-wall condensing L-250 DN60 chimney pipe with a seal for condensing / turbo boilers Krzys-Pol . It is also extremely durable and resistant to mechanical damage. It is acid and fire resistant. The favorable price is also worth noting.
If you are looking for a plastic chimney, the right choice may be the straight chimney pipe PP L1000mm DN80mm resistant to UV radiation with [EPDM] ONNLINE seal . It quickly and effectively removes exhaust gases from condensing boilers. It has a system that works in overpressure, as well as in wet mode, but it must be remembered that the maximum operating temperature cannot exceed 120 degrees.