How to install the chimney

Modern chimneys are complex engineeringThe design on which not only depends on the efficiency of the boiler, furnace, fireplace, the amount of fuel, but also the safety of the functioning of the entire system as a whole. Proper selection and installation will not allow back draft, smoke or fire to appear. Therefore, the selection of material and components, as well as the very process of installing the smoke-exhaust system should be taken seriously. It is better to apply for competent advice to the relevant specialists.

chimney installation

Form, dimensions and types

The chimney is a kind of vertical channel,necessary for the formation of traction and the emission of household gases into the atmosphere. Its section can be round, oval or square. The most common form is cylindrical. This demand is due to the fact that there are no corners in it, which are some kind of barrier to the passage of smoke and burning, leading to the formation of soot and its settling on the walls. The circular cross-section of the pipe provides a quick and practically unobstructed discharge of smoke upward.

The diameter of the chimney pipe is determined on the basis ofinformation in the operating instructions of the heating system. The specialist can also do this by calculating the ratio of the boiler output, the height of the structure and the surrounding buildings, especially if these structures are much higher than the building where the chimney and the entire heating system are planned to be installed.

Chimneys are made of various materials that determine their appearance. Here are some of them:

1. Plastic.

2. Ceramic.

3. Brick asbestos cement.

4. Refractory clay.

5. Steel.

installation of stainless steel chimneys


Before installing the chimney pipe,it needs to be done so that it functions correctly, that is, it provides the necessary traction, was provided with good thermal insulation, had no difficulty in operation, met all fire safety requirements, was durable and, importantly, had a rather attractive and aesthetic appearance.

The chimney has the following qualities and characteristics:

- Excellent aerodynamic properties, which ensure the correct movement of air along with the products of combustion.

- Ideally smooth inner surface. Due to this, the deposition of a damp plaque on the walls is minimized, therefore, it will be less necessary to clean the structure.

- Proper opposition to the negative effects of condensation and aggressive acids.

- High anti-corrosion properties.

chimney duct installation

Chimney installation made of bricks

Traditionally, the installation of the chimney is made frombrick. But with modern fuel - gas or fuel oil, and with transitional regimes of heating systems, the brick chimney undergoes permanent destruction. They are associated with the formation of condensate, leading to the emergence of microscopic cracks, which let moisture into the living quarters. The average life of such an installation is about 7 years. A more durable brick chimney - with an inner tube of refractory clay, in another way it is called chamotte. It is most resistant to fluctuations in temperature conditions.

Mounting features:

- It is impossible to remove more than 2 furnaces into the chimney.

- The distance from the grate to the mouth of the pipe should be more than 5 meters.

- Do not use ventilation ducts under the chimney unit.

- Equipped valves should have a hole of at least 1.5 * 1.5 cm.

- It is better to spread the chimney with the following dimensions: 14 * 14 cm (for an oven with a power not exceeding 3.5 kW), 14 * 20 cm, 14 * 27 cm (for a furnace with a power of 5.2 kW).

- If the external walls are made of non-combustible materials, then you can arrange a chimney inside them.

For a small oven, the brickwork is made in 4 bricks, and for more powerful installations it is 5-6.

chimney installation by one's own hands

We install ceramic chimney

Ceramics used to make chimneyslong time, but modern chamotte installations are not at all similar to pipes from fire-resistant clay of past years. The thickness of the current ceramic units is no more than 1.5-2 cm. Accordingly, this leads to a reduction in the weight of the entire structure, and the installation of a chimney from individual modules has become a simpler process.

The ceramic units have a highheat resistance and resistance to corrosive environments and condensate. Despite the fact that they quickly warm up, the chimneys are very fire resistant. They are capable of up to 1.5 hours to withstand direct ignition.

Ceramic pipes can be found inheat-insulated chimneys with an external contour made of concrete, stainless steel or expanded clay. Such systems of ceramics are modular, therefore it is not difficult to install a chimney with your own hands, the main thing is to observe the necessary norms and rules.

Mounting features:

- The installation must start from the bottom of the chimney, moving upwards.

- A special module with a drain for condensate is placed on the prepared base on top of the cement mortar.

- Next, a connecting ceramic tee is installed, then straight elements. Everything is treated with an acid-resistant solution.

- The joints of the modules must not be connected to the slabs. All seams need to be smeared with a sponge and remove excess mix.

- It is better to attach the ceramic pipes with a yoke every 1.5 m.

installation of a stainless steel chimney

Work with plastic products

Chimneys made of plastic have a low weight andlow price. They are resistant to corrosion, have a flexible shape and are easy to install. But their application is very limited. So, they can be used in systems where the temperature in condensing boilers reaches only 120 degrees. The installation technique is as follows:

- Pipes are cut according to the pre-prepared dimensions.

- With the help of the socketed couplings, the sections of the structure are interconnected.

Despite the fact that this method of installation is the simplest of all, in the construction sector it is not very much in demand. Therefore, the choice of parts and components is very limited.

installation of gas chimneys

Differences in the installation of single- and double-circuit chimneys

Before installing chimneys from thestainless steel, it is important to familiarize yourself with their types. Chimneys are one- and two-circuit insulated. The first used indoors, the thickness of the walls should be at least 0.5 mm and withstand the temperature to 500 degrees. In the lower part of such structures, special devices for condensate assembly are installed during the installation. They can be used in rooms equipped with any heating systems. Also, the installation of gas chimneys for boilers and other units with a temperature of gases not exceeding 500 degrees Celsius.

Two-circuit chimneys ("sandwich") are usedBoth outside and inside. They have in their composition an external and internal circuit, between them there is a heater, for example, ceramic fiber or basalt wool. Heat insulation must withstand the temperature to 500 degrees, without losing its protective properties and not emitting harmful toxic substances, have low thermal conductivity. The thickness of the protective layer depends on the climatic conditions and ranges from 30 to 100 mm. You can make the installation of the chimney ("sandwich") with your own hands. To do this, we need to connect all the elements of the structure in the correct sequence, taking into account all the features that we will consider below.

Requirements for structures when installing them

In the market of heating equipmenta wide choice of boilers, stoves, fireplaces, for which not only traditional solid fuel is used. Often there are oil and gas units. The installation of such equipment requires certain requirements. Consider the conditions under which the installation of a stainless steel chimney or any other:

1. The chimney must completely remove the combustion products.

2. Each chimney or furnace requires its own chimney.

3. The cross-sectional area of ​​the pipe must correspond to the section of the smoke outlet of the heating device.

4. Smoke-out pipes should be made of special steel with increased resistance to corrosion.

5. Smoke channels should be made as direct as possible. They should consist of no more than 3 turns. And the radius of their rounding should be greater than the radius of the pipe itself.

6. The height of the chimney should not be more than 5 meters. This height will provide the necessary resolution and traction.

The importance of the process

Installation of heating units, especiallyWhen installing chimneys made of stainless steel, it is necessary to pay special attention, because this affects the effective operation of all equipment in general.

The installation of the chimney system mustcarried out by qualified employees, as they will perform their work taking into account all the rules and requirements for fire safety, set out in the regulatory documents. They also take into account the recommendations of the manufacturers of single-walled and double-walled chimneys.

chimney duct installation by one's own hands

General rules for installing a chimney

Installation of heating units, especiallyWhen installing chimneys made of stainless steel, it is necessary to pay special attention, because this affects the effective operation of all equipment in general.

The installation of the chimney system should be carried out by qualified workers, as they will carry out work taking into account all the requirements.

Conditions to be observed when installing the chimney

Installation of the chimney pipe, produced by yourself, requires the implementation of certain rules:

- The chimney should rise above the flat roof by at least 500 mm.

- The pipe should be placed at a distance of 1.5 to 3 meters from the ridge or parapet.

The chimney elements must be mounted on the bottom of the heating unit. For better connection it is desirable to use a sealant with an operating temperature of 1000 degrees Celsius.

Places of joints of pipes must be fastened togetherspecial clamps. The joining of the parts of the chimney duct must exclude any possibility of deflection. Also, the chimneys must not come into contact with the wiring, the gas pipeline and other communications.


To the chimney worked well, you need not onlycorrectly install it. For such a channel it is necessary to take care of, clean it before each heating season. It is desirable that the cleaning work performed by qualified workers who know their business. They will ensure the correct functioning of the installation and the safety of living in the house.

Related news

How to install the chimney How to install the chimney How to install the chimney How to install the chimney How to install the chimney How to install the chimney How to install the chimney How to install the chimney How to install the chimney How to install the chimney How to install the chimney How to install the chimney How to install the chimney How to install the chimney How to install the chimney