How to install a chimney on the boiler a gas

Installation and installation of a chimney for a gas boiler. Rules

When arranging chimneys, metal, ceramic and coaxial pipes can be used. It is necessary to decide which pipe is needed for a gas boiler in accordance with the requirements that a specific boiler model makes. If there is no such information in the documentation, then you will have to study the characteristics of each of the presented materials.

The most popular material for the manufacture of chimneys is metal. Stainless steel is most often used, but there are also options from galvanized steel. In any case, the operating temperature in the chimney of the gas boiler when using metal pipes can reach 800 degrees, which is quite enough to arrange a system for removing the combustion products.

The design of metal chimneys includes an internal layer made of stainless steel, a heat.insulating layer of basalt wool and a thin metal casing. Such devices are quite reliable, have high strength and have acceptable visual qualities.

The next option is ceramic chimneys designed for operation at temperatures up to 1200 degrees. Such devices have a three.layer design, which includes a ceramic layer, thermal insulation and an external shell from expanded clay concrete. The main advantages of ceramic chimneys include simplicity of design and installation, reliability and high fire safety.

The last type of chimneys is coaxial, which looks good and has very good operational characteristics. Thanks to the two.layer structure, coaxial chimneys are reliably protected from eminent condensate. In combination with gas boilers, this quality is especially evident, so the choice of a coaxial chimney in this case will be the most justified.

There are also brick chimneys, but they are originally designed for use with solid fuel heating equipment. In order for the opportunity to connect a gas boiler to a brick chimney, the latter must be converted by inserting the metal part into it and performing thermal insulation work.

How to install a coaxial chimney correctly

Installation of the system “Air/combustion products” is performed extremely simply. The pipe section and knee are connected “in the bell”, no gaskets or sealants are used (the internal channel is already standing a sealing ring). How to mount a horizontal chimney:

  • Install a wall or floor boiler in a design position. Make an external hole, mark the track of the gasket with a pencil on the wall.
  • Connect 90 ° to the boiler fitting or straight area depending on the mounting circuit. Different adapters are used here. in some models you must first put a metal sleeve, in others. fasten the flange to the body of the unit.
  • Attach the next section, in front of the docking, put an elastic cuffs on the pipe.
  • Pull the cuffs to the joint, install the clamp on top, then twist it with screws from the kit.
  • On a pipe passing through the wall, put on an internal decorative apron. Install a section of a coaxial chimney with an outer headstorm (cutter), seal the gaps.
  • If during the installation process the gas transmit was extended, attach the pipe to the wall with special clamps.

The assembly scheme of the chimney system with a horizontal output

A few words about how to shorten the coaxial pipe if the chimney sticks out from the outside 40-50 cm. You need to cut the end of the direct channel from the heat generator, do not touch the heads. Remove the internal gas wrap and cut off both pipes separately, since their ends do not coincide in the collection. The master on the installation will tell you more about the installation

Coaxial chimney. what is it

Coaxial chimney is a simple design. In fact, these are just two pipes of different diameters, inserted one into the other, so that between the walls of the external and the inner circuit there is a lumen in a few cm.

All pipes, regardless of the features of the design and the material used, can be divided into two groups:

  • Collective coaxial chimneys for gas boilers are made exclusively in the factory, installed during the construction of the building. To increase the characteristics of the traction, have an internal layer of thermal insulation.
  • Individual systems. chimneys intended for domestic use and connection to one heating device. Plastic chimneys for condensation boilers are mainly used, due to their low cost. stainless steel pipes are used much less often.

The efficiency of the smoke eating system largely depends on the correct choice of the pipe. First you need to learn about how the chimney works, as well as which boilers you can put a coaxial pipe.

The principle of the coaxial chimney

The coaxial pipe is designed to simultaneously dispose of combustion products and air from the street. The process of gas circulation is carried out through two channels.

For effective operation of the pipe, it is necessary to: strictly comply with SNiP on coaxial chimney, conduct preliminary calculation of the system, as well as perform the correct assembly that includes the installation of security units: condensation collection, nozzle that prevents icing, etc.D.

Which boilers can be placed on a coaxial pipe

Coaxial.type chimneys are designed to connect to condensation and turbocharged boilers with a closed combustion chamber with a forced or natural smoke.voltage system.

The pipe is optimally suitable for parapet units and convectors. It is possible to install a coaxial system on a boiler with an atmospheric burner if the pipes are made of stainless steel.

Simple design significantly increases the efficiency of gas equipment. Almost all modern models are connected to systems. Installation of steel coaxial chimneys for single.circuit and double.circuit gas boilers is allowed, regardless of the principle of operation and design of the furnace chamber.

To determine whether it is possible to install a chimney, you should be guided by the parameters specified by the manufacturer in the technical documentation. Usually, there are detailed instructions and norms, as well as the requirements for the installation of a system of smoke eating.

Some models of condensing turbocharged boilers have a separate system for the removal of combustion products, through two separate conclusions. One to remove combustion products, the other for air intake. In such modifications, the connection of the coaxial pipe is not advisable.

Types of coaxial smoke pipe

When choosing a coaxial pipe for gas equipment, it should be remembered that for the boilers of some brands only branded chimneys made by the same company as the unit itself. VISSMANN, BUDERUS, BAXI. all these companies manufacturers make equipment with non.standard sizes of output pipes. Therefore, the use of branded components of parts is considered optimal for the manufacture of a system of smoke eating.

In all other cases, the choice mainly boils down to the selection of a suitable pipe material. The design of the systems is made of aluminum, stainless steel and plastic. In domestic conditions, plastic pipes and stainless steel products remain the most in demand. plastic chimneys

Plastic chimneys are made of special heat.resistant material withstanding the maximum heating temperature to 205 ° C. Pipes are connected to the condensation equipment of the gas type. Advantages of plastic:

As disadvantages, you can distinguish a relatively short service life of coaxial plastic chimneys, as well as restrictions related to the ability to connect to ordinary gas boilers. It is allowed to use the system only in the conditions of low.temperature gas circuit regime.

Coaxial stainless steel pipes

Stainless steel used in the manufacture of the chimney is acid.resistant and withstands a larger temperature than a plastic pipe up to 550 ° C. Manufacturers offer chimneys of two designs:

Installing Flexible Flue Liner

  • Warled coaxial stainless steel pipes. systems most often used to install a collective vertical chimney. The insulated design has improved aerodynamic properties. It is allowed to connect boilers with a forced and natural system for removing smoke gases. The vertical system of the coaxial chimney with air fence is not from the room, mounted at the stage of construction of the building. The calculation of the collective pipe is carried out in the design organization. The operating time of the chimney is at least 30 years.

When choosing a coaxial pipe, primarily guided by the recommendations of manufacturers of heating equipment specified in the technical documentation.

Boilers and methods for installing smoke pipes

There are two types of burners for gas boilers:

  • Open. In them, oxygen for combustion is taken from the room in which the boiler is installed. Therefore, this type of burner or capture is also called “atmospheric”. In such gas boilers, the removal of smoke gases requires a pipe with access to the atmosphere and good thrust. Methods for withdrawing a chimney from a gas boiler
  • Closed combustion chambers (turbocharged boilers). They work paired with coaxial chimneys. from two pipes inserted into each other. The combustion products are allocated along one pipe, air flows on the other to maintain burning. The coaxial pipe is usually excreted through the wall to the street. Therefore, they say that such gas boilers do not have a chimney. But, if desired, you can get a chimney into the atmospheric chimney. In this case, it is necessary for normal thrust (when it is taken to the wall, this does not matter, since the movement of gases provides a turbine).

It is clear that the choice of the type of chimney primarily depends on the type of combustion chamber. In one case, it should be a coaxial pipe, in the other. ordinary. But besides this, there are many more nuances for constructive performance.

What material

A chimney for a gas boiler in a private house can be made from different materials. The main requirement is resistance to chemically aggressive substances, inability to miss gases. Traditionally use several materials. We will talk more about the advantages and disadvantages, features of the assembly of each of them.

Brick chimney

Today it is no longer the most popular type of chimney. It turns out to be heavy, at high altitude it requires the presence of the foundation. In addition, masonry of a brick chimney takes a lot of time.

At the same time, this type of smoke pipes has a number of negative qualities. The first. its internal walls are not hot, which contributes to the accumulation of soot, worsens the craving. The second. brick. hygroscopic. Therefore, the condensate flowing along the walls is absorbed, which contributes to rapid destruction.

The device of a brick chimney for a gas boiler with an insert of a metal sleeve

To solve these problems into the brick chimney insert a smooth pipe of a suitable diameter. This is usually a stainless steel or asbestos pipe. During the construction of such a combined chimney, it is necessary to pay attention to the following things:

  • The joints of the pipes and lodges should be done airtight. If these are ordinary or stainless steel sottos pipe, everything happens standardly-we collect the chimney through condensate. If the liner is made of asbestos.cement pipes, you will have to take care of the tightness of the joints. And cover the joint with cement is not an option. This connection is not airtight in any way. condensate will be absorbed. We will have to invent hermetic clamps, use hydrophobic (water.repellent) compositions. over, they must also be chemically persistent. As an option, you can consider the smell of joints with heat.resistant sealants with the temperature of operation about 200 ° C.
  • In order for the condensate to form as little as possible, pipes (even inside a brick casing) are better to warm. To do this, it is advisable to use a heater that is not afraid of getting wet.
  • A condensotosator must be attached to the liner to the liner. Access to it should be free.

If you make a chimney for a gas boiler according to these rules, then even with abundant release of condensate it will be easy to cope with it.

Stainless steel. single.walled pipes and Sentwitch

Modern gas boilers are arranged so that the temperature of the smoke gases at the output is not very high. Therefore, condensate is always formed. With good traction, most of it flies into the pipe, with good insulation, the remaining part evaporates. So it turns out that the liquid is not always present in the condensate collection. But the condensate itself is formed during the operation of the gas boiler all the time. Once in larger quantities, once in a smaller. In this regard, the requirements for stainless steel for the chimney are high: it should withstand prolonged contact with caustic substances. These requirements are mainly a food stainless steel. Yes, it costs a lot, but only it will serve for years.

The structure of the Sentwitch pipe

Now about how to make a chimney for a gas boiler from a single-walled pipe or from a Sentwitch tube. In order for condensate to form in minimal quantities, it is desirable that the chimney does not cool down. That is, it must be insulated. And although the Sentwitch-diz carpet has a gasket made of insulation, with an outer laying (on the street) it is also better to warm it-it will last longer, it will be better to traction. But in this version you will need less insulation. one layer, while a regular pipe may have to be wrapped in two or even three layers. So the costs of arranging a chimney from a single stainless pipe and sandwiches will be comparable. Just in the first case you will have to use a larger amount of insulation, secondly less.

If we talk about reliability, then Sentwitch dummages are more reliable, if only due to the fact that they consist of two layers of metal. By the way, if you insulate the chimney, the outer pipes can be made of galvanized steel. they do not in contact with condensate, the temperatures are low, and the appearance is unimportant, since everything will be wrapped in an inspection.

Ceramic chimneys

Ceramic chimneys are good for everyone: they are durable, reliable, well tolerate contact with aggressive substances. But have two significant disadvantages. First. they are expensive. The second. have a large weight, so when arranging a high chimney require the presence of the foundation. And this is additional expenses for so a considerable amount. But the life of such a chimney is calculated for decades.

Ceramic chimney

Asbestos.cement pipes

It was once the most popular type of material during the construction of chimneys for a gas boiler in a private house. The material, of course, is porous, has rough walls, and its cross section is imperfect (not round, but rather oval). But this is perhaps the cheapest option.

To avoid the appearance of such spots, you need to make the compound absolutely tight

When using asbestos.cement pipes for the chimney of a gas boiler, it is necessary:

  • Make it as direct as possible, trying to make the joints even.
  • The joints are sealing. As already said, just covering cement. not an option. A sealed connection is necessary. Several solutions of the problem are the use of hydrophobic additives in the solution, coating a dried cement mortar with a sealant, the use of hermetic clamps.
  • To reduce the amount of condensate to the pipe to make high, warm well.

In general, nothing new, all the same rules as for the materials described above, but frost with joints is added. So as a result, at a price, a chimney from asbestos pipes is obtained almost the same as from stainless steel.

Basic requirements for the placement of coaxial horizontal chimney

So that the gas service does not have claims, it is necessary to correctly determine the point of the output of the pipe through the wall in accordance with the norms specified in SP 60.13330.2012. First of all, it is necessary that the internal section of the product is no less than that of the output of the boiler. Installation is carried out in accordance with the basic requirements:

  • The length of the coaxial pipe should not exceed 3 m. When installing an exhaust fan, an increase to 5 m is allowed. The installation of only two dispenses is allowed to change the direction.
  • The chimney is laid at an angle of 3⁰ towards the boiler. In the case of installation of a capacence collector. from it.
  • The boiler is installed so that its output is at a distance of 0.5-1 m from the opening in the wall through which the structure is displayed.
  • If the pipe goes next to the window, the gap between them should be at least 0.5 m. Placement below the windowsill is not welcome. But when there are no other options, laying under the window at a distance of 1 m is allowed.
  • If the gas pipeline is located nearby, the chimney is mounted at a distance of at least 20 cm from it.
  • The hole in the wall of brick or concrete is made such that 1 cm gap remains. After laying the pipe, it is not necessary to fill it with thermal insulation material, it is enough to close the flange.
  • In wooden walls, the size of the clearance increases to 5 cm. The gap is laid with basalt wool or filled with heat.resistant foam.
  • The height of the koaxial pipe passage should be at least 2 m from the surface of the Earth. This is enough to securely protect the surrounding space from the negative effects of smoke gases.
  • When the design is removed under the balcony and a canopy, the length of the protruding part is determined based on their size. Mentally outlines the circle in the horizontal plane. For the center, a fishing line is taken for a trimmer to connect the balcony and wall, and the radius size is equal to the width of the canopy. The end of the pipe should be located outside the circle.

What is the unique coaxial design?

The concept of “coaxial” implies the presence of two objects inserted one into another. Thus, the coaxial chimney is a double.circuit design of pipes of various diameters located one inside the other. Inside the device there are jumpers that prevent parts of parts. Equipment is installed in heat generators equipped with closed combustion chambers. These include, for example, gas boilers.

The coaxial chimney is arranged in such a way that the inner pipe is designed to remove combustion products into the atmosphere. The outer external diameter is used to supply fresh air to ensure burning

Thanks to the special device of the standard coaxial chimney, it performs two functions at once: it creates uninterrupted receipt of the air necessary to ensure the combustion process, and takes out the products of combustion. The length of the device most often does not exceed two meters. It is mainly intended for horizontal location and is removed through the street through the wall. Less commonly, you can find a design brought through the ceiling and roof.

A special design of the coaxial chimney allows it to function according to the principle completely excellent from the usual device. The oxygen necessary for combustion enters the boiler outside. Thus, there is no need to ensure a constant influx of fresh air into the room by ventilation, which is inevitable for traditional smoke excess channels. In addition, a number of problems typical of standard chimneys are successfully solved:

  • Reducing thermal losses due to the heating of the air from the outside from the inner diverting hot smoke of the pipe, which as a result gives a higher efficiency of the system.
  • Reducing the risk of fire in the contacts of flammable surfaces and smoke.voltage canal, since the inner pipe, giving out the heat of the external, is cooled to safe temperatures.
  • The high efficiency of the system allows you to complete fuel burning, thus unbroken particles are not thrown into the atmosphere and do not pollute it. The boiler equipped with a coaxial chimney is environmentally friendly.
  • The combustion process, including oxygen and gases, takes place in a closed chamber. This is safer for people, since the combustion products that are dangerous for them do not fall into the room. Therefore, the arrangement of additional ventilation is not required.
  • Saving space due to the compact dimensions of the device.
  • A wide range of chimneys intended for systems of systems.

Coaxial chimneys for wall gas boilers have recently been widely used for modern heating equipment. This is an excellent solution for a private house in the absence of a chimney, as well as for apartment buildings with a common tower for smoke removal.

Simplicity of design and aesthetic appearance make a coaxial chimney indispensable for the proper operation of a gas wall.mounted double.circuit or single.circuit boiler. Let us and we will consider in detail its features, the principle of operation, the requirements for the installation and installation of this design.

Coaxial chimney for a gas boiler: what is it and where it is used

Coaxial chimney is used for wall.mounted gas boilers with forced thrust. The boiler itself should be turbocharged, t.e. have a fan for ejecting combustion products. The very concept of “coaxial” means constituent, t.e. The chimney “Pipe in the pipe”. A flow of air into the boiler occurs along the outer pipe, along the inner pipe. exhaust gas exhaust into the atmosphere.

The diameter of these chimneys, as a rule, is 60/100. Its inner pipe is 60 mm, and the outer pipe is 100 mm. For condensation boilers, the diameter of the chimney: 80/125 mm. The material of execution is steel painted with a heat.resistant enamel of white color. We look at the standard configuration by photo scheme.

Coaxial chimney: 1- pipe, 2- knee, 3- decorative inserts, 4-clamps, 5- fasteners

There is also such a thing as an insulated coaxial chimney. This is the same constituent chimney, only the outer pipe is made not of metal, but of plastic. Or the second option: when the inner pipe is somewhat longer than the outer. This is done specifically so that condensation does not form on the outer pipe. This type of chimney is a little more expensive, but not much.

A coaxial chimney can be made up of several elements:

Manufacturers of coaxial chimneys for gas boilers

When buying a wall gas boiler, you will be offered to buy a coaxial pipe to it right away. In the usual, standard situation, a coaxial kit for a horizontal smoke removal system is sold, which includes: a knee, an extension cord with a street tip, a squeezing clamp, gaskets and decorative inserts.

If you have a slightly different case, then all other parts and elements can be purchased separately. These elements are universal for almost any manufacturer of wall gas boilers.

The exception is the first element, this is either the first knee or the first pipe from the boiler. The fact is that each manufacturer of boilers has its own planting places. This applies to branded (native) coaxial chimneys.

But there are times when for a certain brand of the boiler pipes there is no available or they are very expensive. For example, a branded coaxial kit for the German Vaillant boiler costs about 70 euros. In such cases, you can consider the purchase of its analogue.

Analogs of manufacturers of coaxial chimneys

These sets have universal seats, and holes for attaching the starting knee (withdrawal) coincide with most manufacturers of gas boilers presented on the market.

Royal Thermo coaxial chimneys are suitable for Baxi, Vaillant or Navien boilers. When buying piano pipes carefully, look at the packaging, on it from the end for each brand of the boiler, its article was put down: “bx”. baxi, “v”. vaillat, “n”. navien.

Another manufacturer in the market of coaxial pipes and elements for them is Grosseto. Their chimneys are universal and suitable for boilers of brands Ariston, Vaillat, Viessmann, Bosch, Buderus, Wolf, Baxi, Protherm, Ferroli, as well as Korean Navien and Korea Star boilers.

The main advantage of universal analogues of coaxial chimneys is their low price. It differs from branded sets of two, or even three times.

Installation and requirements for the installation of coaxial (coaxial) chimney

The coaxial chimney can be installed in three versions:

The most common way to withdraw the coaxial chimney is the option is horizontally with the output to the street.

For the correct installation of a coaxial chimney, there are a number of requirements

The total length of the chimney should be no more than 4 meters.

It is allowed to use only two turns, no more than two knees.

The minimum distance from the pipe to the ceiling and walls made of their non.combustible material should be 0.5 meters.

The horizontal section of the pipe should be made with a slight slope down, towards the street.

These must be done so that the resulting condensate does not flow into the boiler, but go out into the street.

It is forbidden to take the pipe into the window or out the window.

Separate chimneys for gas boilers

Another popular way to remove combustion products in turbocharged gas wall boilers is a separate smoke removal system. What is it?

There are cases when for one reason or another, one cannot derive a coaxial chimney. For this, a system consisting of two separate pipes was developed: one for the release of gases, the other. for air leaks into the boiler. We look at the installation circuit.

As a rule, the diameter of such pipes is 80 mm. Material. steel. In some cases, the air suction pipe is replaced with a flexible aluminum corrugation, which stretches to 3 meters.

Options for installing a coaxial chimney for a gas boiler

Highlight horizontal and vertical methods of installation of equipment. The choice depends on the premises of the boiler room. One of the important conditions: there should not be any extraneous items on the installation wall.

In a wooden house, all elements of the heating system are mounted on a metal protective sheet

Horizontal installation of a coaxial gas boiler

  • the presence of buildings and plantations near the installation;
  • the presence of door and window openings for neighbors;
  • the proximity of windows and doors in the building;
  • distance from the pipe to the hole;
  • number of rotary elements;
  • The need to build a pipe.

Having collected all these data, the testimony is verified with the Rules of SNiP. If all requirements are fulfilled, then they proceed to the direct installation of coaxial chimneys. If it is impossible to fulfill the requirements, then choose a vertical way to install a smoke exhaust system.

Experts advise to fulfill the angle of inclination, following the recommendations of the manufacturer of the gas boiler. For a double.circuit type, it is recommended to bias in the direction of the boiler, for the classic device it is executed towards the ground. If the pipe is tilt, then experts advise to warm the channel.

Vertical installation of a coaxial chimney for a gas boiler

In cases where it is impossible to build a heating structure with a horizontal way, a vertical installation of a coaxial chimney for a gas boiler is used. When there is a need to build a mine through a roof structure, you should remember about fire safety issues and use insulating pipes and protective casings in installation. Fireproof insulating elements are used as isolation material.

Attention! Experts recommend leaving an air gap between the roofing area and the pipe. However, the exit place is thoroughly close and covered with a dense casing.

Options for vertical installation of the tip of the tip

Installation is carried out in one of 2 ways: external or internal. Experts recommend thermal insulation to any of the selected methods.

How to assemble a coaxial pipe for a gas boiler

The assembly of the system is performed in the following order:

  • The basis is combined with the withdrawal from the boiler;
  • fix the lower part of the pipe with a clamp;
  • Fasten elements;
  • Joints are treated with sealant;
  • Check the performance of the structure and produce the first launch.

The inside of the coaxial chimney

According to the rules, 3 fitting or 2 knees are installed on the pipe segment of 3 m. All the joints of the joints are tightly and carefully pressed to each other. The fewer places of the joints, the more reliable the system.

Factory chimneys are equipped with a detailed installation instruction. Effective work of dual.circuit pipes is ensured only with full compliance with all these recommendations.

Horizontal installation

This installation option is carried out taking into account the characteristics of a private house. At first, the place where the smoke eating system will go to the street will always be selected. At the same time, it is taken into account that the height of the pipe will be at least 1000 mm if the gas boiler is mounted on the floor. This value is measured from the unit pipe to the street opening in the wall.

Important! It is impossible for the pipe to directly go outside. When the wall boiler is mounted, then the distance from its pipe to the hole in the wall is allowed to reduce to 500 mm. In this case, the maximum number of rotary knees should be 2 pieces.

When horizontal installation of the coaxial chimney is performed, they never forget about the maximum length of the pipe. This standard depends on the model of the boiler unit and is from 3,000 to 5000 m.

If you need to lengthen the channel, use connecting couplings. They must have heat.resistant rubber seals. During installation, it is forbidden to use any sealants and sealing materials based on silicone.

Vertical installation

When a vertical coaxial chimney is connected, its greatest length can be 7000 mm. This value allows you to use dual.circuit pipes in two.story buildings.

When the construction is erected from aerated concrete blocks, the system is laid inside the structure. The reason for this is the inability of such walls to withstand a large load. For brick houses, the place of laying smoke removal does not matter. However, always additionally perform its insulation.

For the divert of smoke to be carried out efficiently, during installation, comply certain norms. So, when a gas boiler is connected to a coaxial chimney overlooking the wall, then a slope is made 3 °. At the same time, the manufacturer’s recommendations strictly follow.

When connecting the chimney to the boiler, a special adapter is used. At the same time, it is forbidden to use nozzles that are made at the installation site using improvised means.

Important! After the output of the boiler pipe, the tee with a condenserbrower is most often installed and only then lift the coaxial pipe to a height of 500 to 1000 mm. Before starting the system, mandatory traction is first checked.

If necessary, lengthening the chimney pipe is collected according to condensate. Their installation is performed on the principle of “mom-dad”. At the same time, the number of turns of the double.circuit pipe is maximally reduced so as not to worsen the craving. Special clamps are used for fastening the chimney.

Binding of gas boilers

Modern gas boilers have good automation, which controls all the parameters of the equipment: gas pressure, the presence of flame on the burner, the pressure level and the temperature of the coolant in the heating system. There is even an automation that can adjust the work under weather data. In addition, wall.mounted gas boilers in most cases contain such necessary devices as:

The parameters of all these devices are indicated in the technical data of gas cats. When choosing a model, you need to pay attention to them and choose a model not only by power, but also in terms of expansion tank and the maximum volume of coolant.

Winding gas boiler strapping diagram

In the simplest case, the cauldron of the boiler contains only cutting taps at the entrance to the boiler. so that if necessary it could be carried out repair work. Even on a reverse pipeline coming from the heating system, they put a filter-gryazevik-to remove possible pollution. That’s the whole strapping.

An example of a strapping of a wall gas boiler (double.circuit)

In the photo above are corner ball valves, but this, as you know, is not necessary. it is quite possible to put ordinary models, and the pipes are turned closer to the wall with the help of corners. Also note that there are taps on both sides of the mud. this is so that it is possible to remove it and clean it without draining the system.

In the case of connecting a single.circuit wall.mounted gas boiler, it is still simpler. only gas is summed up (gas workers are connected), the supply of hot water to the radiators or water warm floor and the return from them.

Strapping schemes of floor gas boilers

Floor models of gas heating boilers are also equipped with automation, but they have neither a security group, nor an expansion tank, nor a circulation pump. All these devices have to be installed additionally. The strapping scheme because of this looks a little more complicated.

Floor gas caught schemes

An additional jumper is installed on two schemes of the classic binding of the boiler. This is the so.called “anti.condensation” loop. It is needed in large systems if the temperature of the water in the reverse pipeline is too low, it can cause condensation formation. To eliminate this phenomenon and arrange this jumper. With its help, hot water is mixed to the opposite pipeline from the supply, lifting the temperature above the dew (usually 40 ° C). There are two main methods of implementation:

  • with the installation in the jumper of the circulation pump with a remote temperature sensor (and the photo above);
  • using a three.way valve (in the photo below left).
install, chimney, boiler

In the circuit with a circulation on a jumper (condensation pump), it is made by a pipe one step by a smaller diameter than a highway. The sensor is attached to the return pipe. When the temperature decreases below the given, the power circuit is turned on, hot water is added. When the temperature becomes higher than the threshold, the pump is turned off. The second pump. the actual heating system works all the time while the boiler works.

In the second scheme with a three.way valve, it opens the subway of hot water when the temperature drops (set on the valve). The pump in this case stands on the reverse pipeline.

Binding of a solid fuel boiler

Any owner of the boiler TT knows that a lot of heat is released during the active combustion phase. Experience has come since time. when and how to cover the damper, on what period of time, etc.P. But it is worthwhile to distract a little, and the water in the system will overheat and can even boil. In order to prevent such a phenomenon of a boiler strapping without automation, it must contain several devices that prevent the system to boil. Only in this case you can make wiring around the house with polymer pipes. Otherwise, sooner or later, the overheated coolant will soften the material, the pipes will break through with all the ensuing consequences. Therefore, the strapping of a solid fuel boiler, in addition to traditional elements. a security group, an expansion tank and a circulation pump. contains a solid amount of additional devices and usually requires rather solid means.

One of the simple strokes of a solid fuel boiler

The cyclic nature of the work of hard.fuel boilers leads not only to boiling the system, but also to the fact that the house is very hot (when the fuel is actively burning), it is cold. when everything burned out. To eliminate these phenomena, there is a solution: install an indirect heating boiler or heat accumulator. Both-containers with water, they simply perform different functions and, accordingly, are connected in different ways.

Binding with an indirect heating boiler

The indirect heating boiler heats water for the hot water and is connected on one side to the heating system, and on the other, to the comb of hot water distribution. Thus, temperature changes are softened, and water is heated for technical needs. Good solution.

Steam of a solid fuel boiler with an indirect heating boiler

How this scheme works? If the water temperature in the water heater is below the given, then the boiler is connected to the heating of the water in the tank. The heating system at this time turns out to be disabled and cools down a little. After heating water to the required temperature, the boiler again switches to work with the heating contour. When warm water is consumed, the temperature in the tank falls again, again there is a connection for heating.

It is easy, but with such a scheme, overheating is still possible. not always the consumption of hot water coincides with the phase of active combustion of fuel. In this case, overheating is possible.

Scheme with heat accumulator

The second method is to install a heat accumulator. This is also a container of water, but it is connected only to the heating system. Serves to soften temperature changes in the system.

Furnace Flue Pipe

This method is more reliable, but requires the device of several separate contours. The boiler heats the water in the heat accumulator. it is connected to the entrances of that. This is one closed circuit. The second circuit goes to heating. from the release of the heat accumulator (in the upper part of the tank), hot water enters the heating system, and the cooled water from the return pipeline enters the lower part of the same tank. If necessary, you can also connect a warm water floor system.

The cutting circuit TT of the boiler with a heat accumulator

With this construction, there is no usual sharp increase in temperature for a solid fuel boiler during active burning. All because the volume of the tank is added, because there is practically no water overheating. Then, when the fuel burned out and the house begins to cool in the usual system, in the system C TA continues to be spent on the heat of heat stored in the phase of heating. In this way, the temperature background is aligned and the time between the tops increases.

Such a hard.fuel boiler is more reliable and the wiring from it can be done with polypropylene pipes, but the contour from the boiler to the container must be made with metal pipes. In this case, you can use steel, but better still copper.

Binding TT of a boiler with a valve from overheating

The third way to make protection against overheating of a solid fuel boiler is to install an automatic protection device from overheating. This is a special valve with a temperature sensor. The principle of operation is simple: when a certain temperature exceeds (usually 95-97 ° C), the valve opens the inlet of cold water from the water supply, and the excess is released in the sewer. This works, for example, Regulus DBV 1-02, Regulus BVTS 14480.

Protection of a solid fuel boiler from overheating using the regulus dbv valve

The valves, although it is produced by one company, have a different structure and installation scheme. So regulus dbv is installed at the output of the boiler, has a temperature sensor (installation scheme. above). The protection valve from overheating of the TT boiler Regulus BVTS 14480 has a remote sensor, can be mounted both at the entrance and at the output (installation scheme below). What is this option good? The fact that he can work in systems with natural circulation. he does not need pressure to work.

Heating boiler strapping with a coolant to boil valve

Their estimated cost-40-60 €-is much less than the cost of installing a heat accumulator or an indirect heating boiler, but this method does not solve the temperature fluctuations problem. These valves, by the way, can be used to increase the reliability of the circuit with the installed indirect and thereby accurately eliminate the possibility of boiling the system.

Installation of a coaxial chimney: Requirements

The total length of the coaxial chimney should be no more than 3 meters (for condensation boilers up to 5 meters).

Coaxial chimney assembly scheme for gas heating. All the main parts of the structure are indicated.

No more than 2 turns are allowed throughout the length of the smoke channel (2 rotary knees).

Important! The withdrawal of the channel of the displacement of smoke into the street is performed through the wall. It is forbidden to take out a window or window!

It is forbidden to display the smoke removal channel into the entrance, to a closed balcony or loggia, as well as on a street with buildings representing architectural or historical value, children’s and medical institutions.

In addition, general requirements related to all types of chimneys must be observed:

  • The diameter should be equal or more than the section of the output pipe of the boiler.
  • He should not have curvatures throughout his length, his cross section should not decrease.
  • The channel should be gas.resistant, waterproof, joints should be carefully insulated.


Installation of a coaxial chimney is not particularly difficult. In the standard case, the conclusion is carried out through the wall on which the boiler is mounted.

install, chimney, boiler

Coaxial smoke installation scheme for a wall boiler. The necessary indentation and diameter of the pipes are indicated.

In this case, a small piece of the vertical site is attached to the device pipe, then there is a rotary knee 90 degrees. Next comes the horizontal part, which is excreted through the hole in the wall to the street. The length of the street part is at least 30 cm. The design ends with a special head.

When the smoke eating channel is withdrawn with a displacement from the boiler or through the next wall, the scheme is somewhat complicated and requires the acquisition of additional details.

Attention! In order to avoid condensation in the furnace of the boiler, the horizontal area must be placed with a slope of 3 degrees towards the street.

The preparation of the parts of the coaxial chimney by the manufacturer is carefully performed, additional sealing of the compounds is usually not required.

install, chimney, boiler

The diameter of the hole in the wall for the output of smoke into the street is performed several centimeters more than the diameter of the external pipe. At the end of installation, the space is sealed with mounting foam.

Some manufacturers provide for the supply of boilers with separate pipes to remove smoke and supply air.

This design expands the possibilities of installation to three options:

  • Both pipes are excreted through one wall;
  • pipes are taken to different walls;
  • The air supply system is displayed into the wall, and the smoke removal system to the existing chimney.

The third option is especially relevant for apartment buildings.

Advice. In non.standard cases of the location of the chimney to draw up the scheme, contact specialists.

Useful video

Watch a video that tells how to cope with the freezing of the head of the coaxial chimney.

On frosty days, icing of condensate is possible at the exit from the smoke removal system. The most difficult situation is when the ice fills the space between the pipes, making it difficult to supply air for burning. This phenomenon significantly reduces the efficiency of boiler equipment.

Insulation helps to some extent. But the most effective solution is to join the pipe of the exhaust of the nozzle, lengthening and narrowing it.

Wood burning stove installation, detailed How to.

Due to the creation of additional traction, the condensate literally flies along with smoke gases. Some modern boilers are supplied with such nozzles in standard configuration.

How do I Measure and Fit the Flue Correctly?

The second solution option is to supply the chimneys with a condensate collection, which is the withdrawal of a small diameter in the lower part of the coaxial chimney.

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