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No traction in a gas boiler how to fix it

Why there is no traction

Why there is no traction in the chimney, this is a very common question among users of heating equipment working on solid and liquid fuel requiring the removal of combustion products.

This issue should be divided into two parts: the craving was and then disappeared, or it is not initially after construction.

If the heating device (stove, fireplace, gas, diesel or solid fuel boiler) worked normally, for a long time, and then the thrust in the chimney unexpectedly disappeared, then this is the acquired problem, which is caused by any reason. Different cases have occurred in the practice of the chimney sweep, including:

  • The brick smoke canal began to collapse and one or more bricks fell into the channel, blocking it.
  • In the summer, the heating device was not operated and the birds rode the nest inside the channel.
  • Hornes are very fond of non.working chimneys and in the summer they can easily arrange a hive in it.
  • The chimney was not cleaned for a long time and the collapsed saza flooded the channel.

Perhaps someone will be ashamed now, but among the stoves there is a tough, but probably fair punishment of those who do not pay for the work performed. A cement bucket poured into a chimney completely blocks it and creates very serious problems, the elimination of which can be comparable to the cost of building a chimney itself.

If your first option is more about the service of cleaning the chimney on this page: http: // www.Sweephelp.ru/chistka_dymohodov.PHP

Poor chimney thrust

The poor craving of a new chimney of the furnace, fireplace, boiler or its complete absence is a consequence of non.compliance with the construction standards and rules for the production of pipe work.

The most common causes of poor traction

  • The cross section of the pipe or internal smoke channels is narrowed;
  • The chimney pipe is too short and does not make motives;
  • The head of the pipe is located in the winding zone;
  • Hermetry doors and windows can also cause weak traction, since oxygen is necessary for the combustion process that quickly burns out in a poorly ventilated room.

In any case, you can hardly independently determine and eliminate the reason, so we advise you to invite a qualified specialist to diagnose a qualified specialist.

How to improve traction

It is impossible to answer this question definitely. Firstly, you should establish the reason for its absence or weak indicators, and after that to work out possible options for improving. Among the measures: installing window handles with micro.spacing, installing deflectors, rotors, smoke exhausters, replacing chimneys with a larger section, etc.D.

The employees of our company will be professionally suitable for solving this issue, provide practical and consulting assistance. Just invite a chimney sweep, he will return warmth and comfort to your house, and perhaps bring good luck!

If the problem is not purchased, then we are talking about repairing the chimney, with information on this page: http: // www.Sweephelp.ru/remont_dymohodov.PHP

The main causes of poor traction in the chimney

The presence of good traction in the chimney is an integral condition for the full functioning of the furnace or fireplace (about “how to make a chimney for a fireplace”). The craving is a directed air flow that occurs in the exhaust structure due to the difference in air pressure inside and outside, while air masses will always strive to where the smallest resistance. Accordingly, the reverse traction in the chimney is a phenomenon in which the air flow with smoke from the fuel burning in the furnace does not out through the chimney, but back into the room. If the direction of movement of the air flow changes to the opposite for a short time, then this is called thrust overturning.

Why there is no traction in the chimney? There may be a whole reasons for this, ranging from the incorrect design of the chimney to the nearby high buildings or trees. With poor rod, firewood in the furnace will distinguish a large amount of smoke, the door will be smoked instantly (this is especially noticeable if there is glass on the door), and when it is opened, the smoke will bring down the room into the room. In such cases, it is extremely important to identify the cause of insufficient thrust and try to eliminate it as soon as possible.

Checking the traction in the chimney can be carried out using a sheet of toilet paper (you must observe it for its deviation) or with the help of smoke from a cigarette (it is necessary to trace which way it moves). The appearance of smoke in the room indicates the reverse traction, the flame of yellow-golden color-of good traction, and the flame of white color and hum in the chimney-about excessive rod.There are also more modern and accurate ways how to check the traction in the chimney, for example, special measuring devices that allow you to determine the traction at the base of the chimney and at its exit. After analyzing the data obtained, it will be easier to determine what leads to insufficient or reverse traction.

Flame control sensor failed

This is the following reason why the gas boiler can wander. In different boilers, the control sensor is different. In most home boilers, this is a thermocouple. The thermocouple must constantly be on fire, as well as the electrode of ionization and the photographer should always detect the flame on your burner. If the thermocouple is in difficult condition, then with any weak blow of the wind, when your wick deviates very little from this thermocouple, it immediately knocks out automation and you have a clutch of a gas boiler.

If you have this electrode of ionization, a similar situation occurs. Ionization electrodes are usually installed in energy.dependent double.circuit boilers, which are hung on the wall. Photo sales are standing in more power boilers. But this is already, in principle, the industrial type of boilers, which is quite rare in ordinary houses.

How to fight a reverse traction. Basic errors and errors

It was previously said that the reverse traction can be fought by increasing the length of the chimney. The solution to the problem is quite simple, but this solution does not always give positive results.

The second option for solving the problem in a similar situation is to install the deflector chimney on the upper edge of the chimney, the task of which is to increase the thrust in the chimney.

The third option is to reduce the number of bends and sharp turns of the chimney, which increase the cavitation (twist) of the flow of hot air with smoke when passing through the pipe.

Both in the first and second case, the situation will not fundamentally change. Extension of the pipe per 1 meter will not give the expected effect. Installation on the deflector chimney also does not solve the problem until the end. With a significant weather deterioration, the wind still blows a non.protected gas boiler, and heating will again fail. What to do? What is the optimal solution?

A special design deflector is a solution to the problem

An effective method, which is able to solve the reverse traction problem once and for all, is the installation of an aerodynamic device on the smoke pipe. a deflector of a special design.

In an ordinary deflector, air flows affect its outer part. As a result of the interaction of the air mass with the surface of the deflector, a rarefied atmosphere occurs, which increases the thrust in the chimney. The phenomenon has the name of the Bernoulli effect, the concept of which came to us from aviation. In other words, when air, when meeting with an obstacle, goes around it, an obstacle is created around the obstacle, which enhances the lifting effect of the wing.

If the usual deflector is not able to eliminate the wind blowing of the gas boiler, the adaptation of a more complex design is installed. Today there are several types of deflectors with a complex configuration. Among the most popular products, the following types should be distinguished:

The most popular in ours are two types of devices: Grigorovich deflector and a “smoke tooth” type device.


Deflector Grigorovich is a device in the design of which all contours and elements are directly related to aerodynamics. Unlike the usual, familiar deflectors for us in the form of umbrellas standing on pipes in private houses, this device has two cones, straight and reverse. The interaction of two cones provides the necessary movement of air flows, thereby creating a lower pressure zone around the chimney. Due to the difference in the temperature of the cold and hot flows, the thrust in the pipe increases several times, preventing any penetration of the outdoor air inside.

Ferroli boiler hot water working fine but heating isn’t. Loose connection on the internal clock

With the right location and design of the chimney equipped with a deflector, the reverse craving does not threaten you. any gusts of winds to the working boiler will not be terrible.

Another moment should be noted. when the wind blows a gas boiler, and the heating system does not start. We are talking about an insufficiently warm chimney. During the long shutdown of the heating system, which is characteristic of country houses and cottages, at the first launch of the boiler the flame of the burner often fades quickly. The explanation of this behavior of gas-heating equipment is quite simple-it is difficult to climb up the cold chimney for the burning products, and any wind gusts only prevent the channel to warm up.

To get out of this situation, it is enough to warm up the chimney in small operating modes of the boiler, gradually increasing the power of the device to optimal parameters, and hot combustion products in a preheated chimney rush up naturally.

Solving problems when blowing the boiler with a wind

When the autonomous gas boiler blows, then such a problem, of course, needs to be solved and this can only be done in accordance with the root cause. Below we will consider some ways to resolve such a freelance situation that can be carried out without involving specialists serving gas boilers.

How to deal with bad thrust

Traction is the external power in the chimney that makes combustion products rise and go into the atmosphere, changing in places with fresh air the source of YouTube.com

The traction is called a physical phenomenon when hot gas from burned products rushes up the ventilation duct and pushes into the atmosphere. Everything happens here, according to the laws of physics, where the warm substance expands and turns out to be lighter than cold air on the street, therefore, it rises upward.

Adjusting the outflow and influx of gases is controlled by the sensor on the boiler, which determines the condition of the thrust, and it may turn out to be:

  • Too weak traction when the flow of fresh air (read. oxygen) is limited, and is not able to maintain burning.
  • Excessive thrust arises from excessive ventilation ducts or incorrect position of the chimney. In such situations, the combustion of gases occurs too fast, which again entails a lack of oxygen and the boiler rises.
  • Reverse traction occurs in cases where the direction of the gases changes, that is, air enters the chimneine pipe and combustion products are returned to the furnace. At the same time, not only the attenuation of the burner can occur, but also the release of carbon monoxide into the room, which is dangerous for human life.

SNiP 41-01-2003 will help in solving this problem, but this is only if you figured out why the gas floor boiler blows in the wind and realized that this is the result of the wrong device of the equipment. Predate attention here should be paid to the correctness of the location of the chimneine pipe, which was mentioned in the section “Why the gas boiler is blown away. the main reasons”. If the pipe is below the required level, then it needs to be lengthened. in most cases it is easy to do, since you just need to add another fragment of the desired size.

Also, most manufacturers of heat.generating equipment recommends the use of special stabilizers, popularly called “fungi” source of BOUW.ru

Sometimes it is impossible to increase the height of the chimney for one reason or another and then the so.called rupture of the thrust stabilizing the movement of gases in the chimneine pipe should be organized. That is, when blows a gas boiler with a wind. What to do to avoid lengthening the structure. To do this, on a pipe mounted on top of the roof, a truncated cone is cut with a wide end towards the boiler, as shown in the upper image. It turns out that cold air enters from above and from the sides of the perimeter, and this helps to accelerate the ejection of burned products, which in this situation is just called the improvement of traction.

In addition, it is imperative to check that there are no garbage or some extraneous objects in the ventilation ducts, soot on the internal walls, and all joints must have a sealed connection. This also includes the thermal insulation of the pipe. if it is broken, then this may turn out to be one of the reasons why the boiler blows. Such shortcomings are eliminated quickly enough and without problems.

When the gas boiler is constantly blown away in the wind and the reason for this is the presence of sharp turns in the ventilation system, you will have to eliminate this drawback. you cannot do without it. If there is no way to change the direction of the pipes so as not to create air turbulence causing attenuation of the burner, then you can change the angles of the turns. That is, when the angle has 90 °, it can be made smooth, and if it is a metal pipe, then instead of a rectangular fitting, put two inserts of 45 °. This replacement will create a smooth passage for gases and remove twisters.

Reducing the diameter of the chimney

A lot does not mean well and too large the diameter of the chimney can lead to the fact that the burner will blow out the wind source Remont-System.ru

For some reason, it is generally accepted that the larger the cross-section of the chimneine pipe, the better the craving and this concept is guided by the assembly of the ventilation system for gas boilers, but this is a pernicious misconception.

To create normal traction according to SNiP 41-01-2003, three main conditions must be observed:

  • A sufficient amount of air (oxygen) should enter the furnace to maintain combustion.
  • Creating a high temperature in the chimneys.
  • Heating the inner walls of the smoke pipe.

To comply with these three conditions, the chimney must be made of materials with a low heat transfer coefficient, or the thermal insulation of the external walls of the pipe will be required there. It will be logical to conclude from this. the larger the diameter, the slower the walls of the chimney will warm up. As you can see, with excessively a large section, at least two problems occur. the possibility of reverse traction and prolonged heating of the walls of the chimney.

To eliminate this problem, you do not have to disassemble the entire ventilation system. just insert a smaller diameter pipe into the main chimney and fix it there. Just be sure to ensure that the docking places of fragments at the transition are hermetically sealed.

Installation of the deflector

If a gas boiler fades in a strong wind, then changing the chimney is the easiest way to combat a reverse traction source PechNoedelo.com

One of the most effective ways to solve the problem when blowing the heating pad of the gas boiler by the wind is the installation of the deflector. This is an aerodynamic device that may differ in the design of manufacturing. Such a device stabilizes traction and eliminates the occurrence of situations leading to the attenuation of a gas boiler.

There are at least four main types of deflectors, although only the first, second or third design is mainly used for autonomous gas boilers:

  • Deflector Grigorvich.
  • Wolpert deflector.
  • The combined design of Volpert-Grigorovich.
  • Spherical deflector with rotation.

Rushing paths

If the chimney creates insufficient thrust, it is necessary to replace it, install a septa pipe selected in diameter to this power of heating equipment (according to the instructions, according to tables), and height according to the requirements of SNiP (half a meter above the skate when placing the pipe near it and t.D.).

If necessary, summer furnaces, you can equip the boiler with a centrifugal smoke car for confident infrequent launches under the control of a responsible person in hot weather. But there is a simpler solution.

How to melt the boiler in the summer or stove after a long break?. The folk method. to stick a vacuum cleaner blown in a blow, or put any other fan on the injection for a couple of minutes until it flares up. Watch the video

Revelation of reverse traction

There is a term there is a term to indicate the reverse movement of air flows (not through the chimney, but back into the room). The name speaks for itself: the flow of gases from burning fuel seeks back to the room, and not out. There is a lot of videos on the network with a detailed description.

Before each launch of heating devices, it is recommended to determine the strength and direction of the thrust when the ventilation devices are disconnected (if any).

  • We’ll talk about the factors and the reasons a little lower, and now let’s figure out what to do in order to identify the fact of changing the thrust:
  • If the glass in the glass is a glass door (for example, in fireplaces, such an element occurs quite often). it is clearly visible through the glass how it is quickly smoked. One has only to open the door, and the cloud of smoke immediately breaks out, that is, into the room;
  • It is enough to attach a sheet of thin paper to the opening of an open firebox and see which way it deviates. The same will also show a steaming cigarette instead of a paper leaflet.

However, this technique for a private house is hardly relevant. most people are around folk visual ways.

The anemometer does not give objective information at wind speeds below 1 m/mm. That is, in calm weather, it does not make sense to use such a device.

  • If the ratio of combustion and thrust processes is normal, then:
  • The flame has a yellow color with a golden tint;
  • smoke appears and immediately disappears into the chimney channel. without jerks, smoothly and at the same time energetically.

The situation when the normal craving is too great. this is not good, t. to. the fuel will fuel too fast. The white color of the flame and the rumble in the chimney pipe will say about excessive thrust.

Problems with traction

In order to determine the presence of good traction in the pipe, it is not necessary to have a special device. Иногда возникающие проблемы приобретают настолько крупный масштаб, что определить полное отсутствие выхода газов из помещения особого труда не составляет.

As a rule, the malfunction of the diverting pipe speaks the following:

  • If you look closely at the color of the flame during a stove or a fireplace, then we can talk about the following. The flame in the firebox, which has a dark red color speaks of insufficient traction power.
  • Bright, almost white color, burning fuel, on the contrary, indicates the craving of great power.
  • If the smell of smoke is felt in the room, then this may indicate a malfunction of the chimney and a complete absence of traction, this effect is called the reverse traction. In this case, all smoke and spent combustion products do not fall into the street, but, on the contrary, into the room. (Cm. also: how to clean the chimney from soot)

Causes of improper operation of the chimneine pipe

During the ideal operation of the chimney, the flame in the furnace of a stove or fireplace usually has a golden color, there is no extraneous noise in a smoke.sobbing pipe, there is no smell of smoke in the room. The reasons for the incorrect operation of the smoke system are mainly the following:

  • Errors at the initial stages of design. Perhaps the chimney has insufficient dimensions and simply does not cope with the incoming stream of spent substances.
  • Perhaps the incorrect pipe height has been selected, which can also significantly affect the work of the chimney. (Cm. also: exhaust pipes for gas boilers)

The first two cases are relevant when at the first launch of a gas column or a furnace firebox, it shows that there is no traction in the chimney. And if before that you drowned a stove or fireplace and there were no problems with the removal of the exhaust gases, then the reasons influencing the traction may be the following.

  • Too much temperature difference.
  • Blocking in a smoke pipe.
  • The presence of a large amount of soot in the chimney.
  • Weather conditions: strong, fluid wind or high humidity due to prolonged precipitation.

Sometimes, due to high humidity at first the span or stove, the craving can be completely absent. As a rule, this state of affairs is temporary. After some time, when the inner surface of the pipe slightly dries the thrust slightly recovered and all the smoke that fell into the room will instantly disappear. (Cm. also: how to clean the gas boiler chimney)

Causes of poor traction

There are a huge number of causes that cause traction violations, however, the worst of all if the situation arose as a result of an erroneous design of the chimney (for example, the cross.section of the pipe is incorrectly selected or its height is incorrectly calculated).

In this case, it is possible to increase the movement of air in the chimney only with the help of radical methods, that is, in other words, a complete restructuring of the chimney is required. To do this, you need to seek help from a professional stove or do everything yourself, with your own hands.

In fact, any, even the smallest deviation from the established standards regarding both design and installation can lead to improper operation of the chimney.

One of the most common reasons is the soot that is formed in the process of burning firewood. Particles of combustion products glue each other and settle on the walls of the chimney, which subsequently leads to a decrease in its diameter. As a result, the movement of air in the chimney is difficult. Therefore, the chimney must be regularly cleaned. Violation of ventilation. The worst manifestation of poor chimney is a reverse craving. In this case, the smoke formed as a result of combustion of fuel does not go through the pipe, as it should be, but directly from the furnace chamber penetrates the room. External factors

If it is not possible to establish the cause of the difficulty of smoke, it is worth paying attention to atmospheric phenomena. For example, a strong wind or high atmospheric pressure can cause a violation of traction.

In some cases, reverse traction occurs only for a short period of time (1-2 days). This happens mainly during the furnace furnace in cool weather or after prolonged downtime of the furnace device. This is explained by the fact that cold air has already accumulated in the furnace, which begins to interfere with the occurrence of movement in the chimney and smoke penetrates into the room.

With the periodic occurrence of such problems, it is necessary to accurately establish the cause and eliminate it. In addition, it is recommended to use a special device (chimney traction stabilizer) in order to organize secondary air supply for optimal strength of its movement along the outlet pipe.

The stabilizer is equipped with a special valve, which is able to prevent the appearance of too high pressure in case of emergency situations. You can use ordinary paper to expel cold air.

To do this, burn 2-3 leaflets in the furnace, and warm air, climbing the chimney, will push out the cold. After these simple manipulations, you can melt the oven. So that the reverse traction does not cause you unnecessary trouble, it is necessary to clean the outlet pipe in time.

What processes support traction

The strength of the traction depends on any factors that determine the density of the air in the room and beyond.

The effectiveness of smoke exit from the chimney depends on many conditions

The conditions inside the house affecting the vacuum of air masses in the chimney include:

  • construction raw materials used in the construction of the home (natural. passes the air, but no artificial. no);
  • the average temperature in the room;
  • the size of the room in which the heating equipment is located;
  • the number of people in the house;
  • the number of additional air consumers, for example, kitchen hoods, exhaust fans, etc. D.;
  • Method and frequency of ventilation of rooms.

Factors of the external environment, correcting the strength of traction, believe:

  • temperature, atmospheric pressure, wind and humidity on the street;
  • The activity of convective flows is the nature of the movement of air from the Earth up;
  • the action of isothermia. the statism of the air as a result of the equality of its temperature, regardless of the height (does not happen long in the morning, in the evening and with cloudiness);
  • The appearance of inversion is the movement of cold air down, which happens only in the evening and night hours and under the influence of the wind.

To the conditions of the external environment, you need to be able to adapt.

The wind helps to pull the smoke from the pipe

The functioning of the draft also reflects the circumstances associated with the design of the chimney, that is:

  • type (internal or external chimney);
  • length;
  • evenness;
  • the nature of the surface (smooth or rough);
  • height;
  • the form;
  • diameter;

Conditions related to the constructive features of the chimney are most important. When coordinating these factors, one can limit the influence of adverse aerodynamic processes and force them to work not in minus, but a plus.

Roting turbines

If the reason for the lack of traction remains a mystery and previous manipulations were unsuccessful, it remains to organize a forced yield of combustion products. For forcibly air removal on the pipe, you need to install a rotational turbine. The device consists of a fan, temperature sensors and the speed of the air masses. The device works automatically.

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Improper location of a gas boiler in the room

The location of the gas boiler in the room also plays an important role. In some cases, situations were observed when, for example, the boiler is located in the kitchen, it, in turn, is somewhere on the second or third floor of the building and there is a balcony in this kitchen.

So what is happening? People open the door of the balcony, their craving in the chimney is magnificent and what happens? At first we had, some kind of influx of air from the corridor or from neighboring rooms when opening the door in the kitchen and the craving was more or less stable. And here with a sharp opening of the balcony what is happening? A huge amount of fresh cold air enters the kitchen and a very sharp strong rod in the chimney forms.

The amount of air increases and hot air begins to go into the chimney at even higher speed. Thus, the wick begins to literally hesitate already, walk. That is, it can simply either blow it off, or if there are bad contacts of the security chain, or worn sensors. This can also lead to itself that your boiler will go out.

It is worth noting that the above reasons are the most common problems. Special cases are possible when only a specialist can determine the cause of the attenuation and blowing of a gas boiler as a result of a thorough inspection.

Only one thing is important. follow the safety rules of gas supply and comply with the standards prescribed there.

Causes of poor traction in the furnace and solution

To figure out why there is no traction in the furnace, you need to understand what the physical phenomenon itself is. This is a natural air movement that occurs due to the difference in temperature and pressure between the medium in the heating structure and the situation on the street. That is, in the case of a properly arranged and good system of smoke eating, a hot flow moves freely towards colder air.

There is no traction in the chimney or it is present by a piece of paper. It needs to be set on fire so that smoke appears. It must be brought to the firebox after opening the pipe damper. The results may appear in three versions:

  • The smoky stream is delayed in the furnace. everything is in order;
  • The smoke is directed up. the smoke eating system for one reason or another does not work;
  • The stream is removed from the furnace. this is how the reverse traction is manifested.

Poorly leaving smoke leads to various kinds of adverse consequences. This is not only health and discomfort in the room. With poor rod in the stove, firewood burn worse. As a result, heat is released little for warming water in a bathhouse or a shield for heating a house. And part of thermal energy goes through the chimney outside. ash is also formed. That is, it is important to fix the situation.

Settlement of combustion products on a smoke eating system is the most common cause of traction deterioration. Sazha gradually forms a solid cluster, which narrows the cross section of the channels. This leads to a decrease in the speed of smoke from the pipe.

To correct the situation is enough periodic cleaning of the walls of the chimney. In order to minimize regularity, you need to use dry firewood. The alternative is fuel briquettes, from which even less combustion products remain.

Consider what to do if there is no traction in the stove because of soot. Mechanical provides for the use of a brush brush. The process is effective, it can be controlled to exclude damage to the system from the inside. “Delapses” neatly rip off, and garbage is removed through the technological holes in the system.

Regarding the chemical methodology, the opinion of experts diverges, as there is a possibility of having a destructive effect due to combustion of soot. But in fact, the action of reagents is reduced to the splitting of “growths” to volatile substances. Among the popular recommendations, three common solutions can be distinguished:

  • Potato. Here, both chopped tubers and cleaning in the amount of about 10 liters are considered here. The workpiece falls asleep into the furnace when firewood burn well in the furnace. The principle of action is the abundant allocation of steam from starch, which provokes the junction of the accumulations of soot. She falls off under her own weight. It remains only to remove pieces from the chimney.
  • Aspen. Several logs of this tree secrete a large amount of heat, which leads to burning soot. That is, the method may be fire hazardous with a large accumulation of soot. Therefore, it is worth making sure of the reliability of chimney channels.
  • Rock salt. This approach is a preventive, not a solution for the effective removal of combustion products. Salt falls asleep into the furnace during firewood burning.

Of the products offered by manufacturers, when there is no traction in the stove, the “Kominik” and “Polen-Trubochist” are popular with popularity. They are on the coals on the time indicated in the instructions. The soot distinguished by the destruction of soot during heating. It is not worth removing the remains after the remedy after extinction of the coal, since their effect will continue during the next stamping of the furnace.

Air flow

Carrying is an air flow. That is, for smoke eating it is necessary to create conditions for air flow into the heating structure. With closed windows and doors after opening, blown and pipe damper may occur the effect of reverse traction due to the low air content indoors. That is, the solution to the problem consists in simple ventilation of the house or bath until the stove is rolled and during the first 10-15 minutes after the firewood flashes. But the drafts should be avoided, since vortex streams violate the desired influx.


Reducing the temperature on the street is more often the reason why there is no traction in the furnace in the bathhouse than in the house. Cold air is heavier than warm and exerts in the second pressure. Therefore, the so.called air cork is formed in the pipe. It can be pierced with a small amount of paper. But often the problem is not only the difference in temperature. The sticking of soot and a low flow of oxygen affects here.


High humidity helps to reduce atmospheric pressure. Dense air adversely affects the sparse. And this worsens the movement of smoke. In winter, the listed moments can cause hoarfront formation on the surface of the pipe, which narrows its internal section. In this case, it will not work to influence the weather, but the faster “overgrowing” of soot can be eliminated by frequent cleaning channels.

Pipe height

The height of the pipe can also cause why there is no traction in the chimney. The extreme point of the chimney should be located above the skate span by more than 500 mm. If there are still buildings with chimneys nearby, then the height will have to be increased. In total, as a rule, to ensure good traction, a channel of 5 meters long is enough.

It is worth noting separately that a high pipe can cause excessively good traction. That is, firewood will burn faster, which means that more heat isolated. And this will provoke overheating of the masonry with its subsequent destruction. Therefore, to select the optimal height, you should contact specialists.


Vynamics are often installed above the pipe. They protect the chimney from pollution, precipitation, birds. However, with the improper installation of an incorrectly selected deflector, as a result, an unnecessary obstacle to output smoke can be obtained. That is, in this case, the product will have to be lifted, expanded, replaced or completely dismantled.

A good solution may be the installation of a turbine. This is a semblance of a deflector, only in the wind of the blades of the device begin to rotate around their axis. Thus, smoke from the pipe will additionally stretch out. The alternative to the weather conditions are electrical counterparts.

Briefly about the main thing

Traction is the natural movement of air between two different media, in which pressure and temperature indicators differ.

The most common reason for the deterioration of traction in the smoke.casing system of the furnace is the accumulation of soot on the inner walls, which narrows the inner cross section of the channels.

Of the external factors, the causes of poor traction include high air humidity or pressure, low temperature, a weak air flow indoors.

From design reasons, the height of the extreme point of the pipe, the choice of the deflector, the complexity of the smoke system and the shape with the size of the cross.sectional channel are distinguished.

Less commonly, the thrust is disturbed from the collapse of brickwork into the chimney.

Solutions how to rectify the situation depend on the identified problem.

It can be ventilation of the room, cleaning the internal walls of the smoke eating system, the correct installation of the pipe and the deflector.



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