Russian products today are almost as good as their foreign counterparts in terms of quality and performance, which have a higher cost. As such an example, we can consider modern Kraft chimneys, which are made of stainless steel and are distinguished by high performance. These structures are designed as modular systems, based on high-strength steel, which is heat and acid resistant. Therefore, the material is able to effectively resist aggressive substances.
Description
Kraft chimneys today can be purchased in several varieties. Some of them are systems for oil or gas condensing boilers, others are designed for heating stoves or home fireplaces, while others are used as part of coal-fired heating appliances. In the manufacture of the first, AISI 316 steel is used, which is able to withstand high temperatures. Such chimneys can be operated with a wide range.
Those products that are intended for simple heating stoves and home fireplaces are made of AISI 321 steel. It is a stainless steel, which is additionally reinforced with titanium. This approach allowed to achieve maximum protection against corrosion. Chimneys have a multi-layer structure and are protected from condensate formation; they can be operated without loss of quality characteristics for several decades. If you are interested in Kraft chimneys for coal heating systems, then you should know that they are based on AISI 310 steel. It is characterized by high heat resistance and can withstand temperatures up to 1000 ° C.
What else you need to know about Kraft chimneys
If you have two-layer chimneys in front of you, then they have Rockwool heat-insulating material, it is represented by fire-fighting bas alt wool. It is able to prevent the pipe from cooling down and eliminate the accumulation of liquid, which ensures uniform combustion.
Product prices
Kraft chimneys are presented today for sale in a large assortment, among the varieties of components of this system you can find accessories and different types of chimneys. For example, deflectors cost 1800 rubles. and above, while taps - 689 rubles. For a sandwich pipe 500 you will have to pay 2600 rubles.
Installation instructions
Installation of chimneys must be carried out in conjunction with plugs that are equipped with condensate drains. ATas an alternative solution, a revision to maintain the channel can be used. When the roof is made of non-combustible materials, a spark arrester must be installed in the chimney, it is made of a grid with a square mesh, the side of which is 5 mm.
When designing and installing a chimney, it is not allowed to narrow the system, but it is quite possible to expand it somewhat. This may be necessary to assemble the chimney of the furnace, the outlet diameter of which is 140 mm. At the same time, it is impossible to purchase a chimney with a cross section of 120 mm, but it is quite possible to use 150 mm, and you will need an adapter.
When you equip horizontal sections, you must remember that their length should not be more than a meter. The junction points of the chimney elements should not be located at the points of the roof passage and the ceiling, as well as the passage in the wall. Tees and bends must be installed in such a way that they are not loaded by the elements of the chimney.
Working with additional elements
Installation of chimneys may involve the use of additional elements, which are:
- convectors;
- mesh;
- water tank;
- heat exchanger tank.
The convector should be installed on a heating or sauna stove, and its task will be to take heat for the chimney. A mesh should be placed on top, it is intended to increase the volume of stones. Water heaters for stoves are installed on top of them anddesigned to heat water to boiling point. Water at the same time heats up quickly enough, because the pipe passes through the tank. Water must be chilled or diluted before use.
The heat exchanger is used in conjunction with an expansion tank and is used in conjunction with fireplaces, heating or bath stoves. Water heaters are located on top of furnaces and are designed to heat liquids to boiling point.
Arrangement of passage nodes through the ceiling and roof
When chimney pipes are installed, they must be led through the ceiling. In this case, a passage unit is used, which should be 70 mm more than the thickness of the ceiling. Sometimes in heat generating devices there is an increased temperature of the exhaust gases. Such conditions require that insulated chimneys are used, they are supplemented with insulation and provide fire safety. The pipes also pass through the roof, using a roof groove or Master Flush silicone roof sealant, which is used for a flat or corner roof. When installing the chimney, you must comply with building codes and fire safety regulations. It is important to remember that the chimney heats up during use. If it passes near building structures based on combustible materials, it should not heat them above 50 ° C.
Chimney mounting features
Kraft chimneys, the prices of which were mentioned above, shouldfastened with the exception of the possibility of deflection or displacement under its own weight or from the wind of any elements. To do this, use a wall mount, which is installed at the rate of one unit for every 2 m of the chimney. The step from the chimney to the wall will depend on the wall fixture used.
Assembling
Modern chimneys must be installed starting from the bottom of the heater or heater. All joints of elements and pipes, as well as tees and waste must be sealed with heat-resistant mastic. Moreover, the components must be connected to the entire depth of the landing socket, fastening the elements with a crimp collar.
Conclusion
Regardless of whether insulated or conventional chimneys were used, after installation is completed, a test furnace must be carried out, during this it is important to check the tightness of the joints and make sure that adjacent structures are not affected by high temperatures. If they are made of combustible materials, then they should not get very hot.
