Today, installing a stainless steel chimney is becoming more commonplace than brickwork for removing combustion products from a residential building. The popularity of prefabricated modular structures made of stainless steel, including chimneys, is explained by the ease of assembly, reliability and for a long time services. For their production, only high-quality chrome-plated material, steel sheets and galvanization, as well as alloys with different percentages of metals known for increased resistance to external environmental influences are used.

Main parameters of stainless chimneys

On modern construction market chimneys made of stainless steel and various other alloys are presented in a large assortment, and they all meet basic operational requirements. There are chimneys for various types boilers:

• diesel;
• gas;
• solid fuel;
• combined type;
• universal.

Metal chimneys vary in shape:

• straight;
• telescopic;
• stainless steel sandwich chimneys;
• corrugated flexible stainless steel chimneys.

The quality of installation not only affects fast education stable draft, but also on the efficiency of the boiler and the safety of the residents of the house. Do not forget that during the combustion process, depending on the type of fuel, not only heat is released, but also:

• soot;
• volatile acid compounds;
• gaseous combustion products;
• carbon monoxide;
• volatile resins;
• ammonia and other compounds.

To protect yourself and your loved ones from any troubles, it is important to ensure that all these harmful volatile compounds are removed through the chimney, especially carbon monoxide or CO. During installation stainless chimneys It is equally important to comply with all safety precautions and legal regulations. They are set out in specialized literature and legislative acts.

The essence of these standards is that it is important that the cross-section of the chimney corresponds to the power of the boiler, the height of the chimney is more than 5 m, and it is installed above the roof level in order to avoid turbulence and backdraft. And the chimney duct must have a minimum of turns and broken sections. The dimensions of stainless steel chimneys are initially taken into account by manufacturers, so industrial release is underway taking into account these standards.

Basic requirements for the chimney:

• smooth surface and round shape promote stable traction;
• condensation formation is minimal;
• high levels of heat resistance and tightness;
• ease of installation and maintenance;
• fire resistance and safety.

However, all these advantages can be guaranteed only if you follow all the recommendations for assembling the structure, which are shared by experts - stainless steel chimney installation: video.

Attention: When purchasing modular-type stainless steel chimneys, be sure to thoroughly study the section in the instructions that deals with its compliance with the power for which the boiler or stove is designed!

In addition to proper installation, accessibility to the chimney is no less important - for its cleaning and maintenance, as well as condensate drainage, which requires a separate pipe.

Flexible stainless chimneys greatly facilitate the installation of an autonomous heating system, especially if it is impossible to maintain the straight path of the smoke exhaust system. The corrugation is also effective at high temperatures, up to 900°C, when working on fuel oil, and is also not afraid of temperature changes and quickly warms up, providing stable draft when starting the boiler. The main parts of the prefabricated structure are similar, but the chimney pipe itself is different.

In brickwork, fairly wide channels of an ellipsoidal cross-section, that is, with an oval cross-section, are sometimes used. Their shape also does not contribute to the accumulation of soot and smoke from reverse draft.

Also produced:

• single-circuit or single-wall chimneys, the so-called mono-systems (a variant of a chimney without insulation), which can withstand temperatures within 450°C, applicable inside a building, including corrugation;
• double-circuit thermal systems (with a double or triple layer of chimney) on basalt wool insulation between metal.

There is also the possibility of additional insulation of a stainless chimney, which will be discussed in the last section of the article. But it will only be needed for external structures.

The quality of operation of the smoke exhaust system is also affected by:

1. Wall thickness, which is calculated and specified in the standards:

• for gas boilers, the thickness of the chimney duct ranges from 0.5 mm,
• on diesel fuel- from 0.8 mm;
• for solid fuel boilers - from 1 mm.

2. Configuration. The ideal chimney is straight, and the fewer bends, turns and protrusions, the more efficient the draft and the less accumulation of soot. A smooth cylindrical chimney pipe of sufficient cross-section contributes to efficient operation.

3. The proportions of the diameter (section), length of the pipe or height of the chimney provide sufficient draft force. Stainless steel chimneys with a diameter smaller than necessary for normal operation reduce the efficiency of the boiler, fireplace or stove. Experts also say that it should rise above top point roofs by at least 20 cm, and the chimney itself - no shorter than 5 m.

Special parts solve problems with its maintenance:

• inspection with soot removal;
• condensate drainage;
• air intake for the combustion process;
• chimney for protection from precipitation.

What metal is used for chimneys

“Stainless steel” refers to a group of steel-based alloys with a small chromium content or galvanized sheet iron—more correctly, “galvanization.” Such products are distinguished by excellent anti-corrosion characteristics when interacting with oxygen, water and the aggressive environment of acidic compounds released during combustion. This provides a few microns of chromium oxide deposits, which is why the process is called "chrome plating".

Various grades of steel are used for chimneys:

• 430 - casings and other parts for low-aggression environments;
• 409 - contains titanium, used for pipes of fireplaces, solid fuel boilers and stoves;
• 316 - with the addition of nickel and molybdenum for heat resistance and resistance to acid compounds in diesel furnaces;
• 304 - with the same additives, but in smaller quantities for less aggressive environments;
• 321 - universal grade for chimney pipes increased heat resistance, up to 850°C;
• 310 - the most heat-resistant, durable and durable smoke exhaust for the most powerful heating equipment.

Attention: For multilayer sandwich pipes, steel of different grades is used. On the internal table it is more resistant and heat-resistant, on the external table it is cheaper and simpler, so it does not look as impressive in appearance as a single-layer chimney.

Main elements and their characteristics

The chimney consists of several elements that have different purposes and assembly order:

• tee;
• pipe elbows;
• audit;
• condensate collector.

1. The main element is a long straight chimney pipe of different lengths, and its fragments are connected like a socket without special fastening.

2. An inclined elbow (at an angle of 45°) connects 2 pipes, changing the slope of the chimney, and it is used at the junction of horizontal and vertical fragments.

3. The universal elbow (at an angle of 90°) is also used as a rotary element to change the configuration of the chimney. Several of these elements are used throughout the chimney - from the top to the junction of the boiler pipe.

4. Tees lead flue gases into the chimney and cut off condensate. They are also joined using a socket method or one-on-one.

5. The condensate drain is placed under the tee to drain excess liquid.

6. Inspection - an open element, which is designed to clean soot from the chimney. Mounted under a tee at the base of a vertical trunk - picture:

Installation of a stainless steel chimney

Modular chimneys received today greatest distribution, thanks to the ease of assembly. This principle makes it possible not to waste time on labor-intensive fastening and sealing of the chimney. Given how extensive the selection of parts for assembling stainless chimneys is, it is possible to vary its configuration as much as possible without compromising the draft and operation of the boilers. Sometimes you can’t do without a corrugation or several bends in order to competently build a chimney with minimal reconstruction of the walls.

1. Preparation for installation involves calculations on the expected configuration of the chimney, a preliminary sketch and marking of the walls along which its fastening is planned. This will allow you to most accurately calculate the total length of the structure and select the necessary rotating parts for the pipe joint.

Attention: Do not forget to add an outer section, which should be at least 25-50 cm above the level of the roof ridge - to ensure traction in any weather.

2. Before assembling the chimney inside the pipe, the seams are supposed to be treated with a special sealant, which guarantees maximum efficiency joints. The outer and outer walls do not require this.

3. Proper installation of the chimney is done from the boiler or stove, that is, from the bottom up, sequentially connecting all the bends and pipe links. Docking according to the socket type - when the upper pipe is inserted into the lower pipe using a special latch. If it is not there, but the shrinkage depth is almost half of the outer diameter.

4. The links at the junction must be securely fixed with clamps, which are included in the kit. The finished pipe must be attached to the wall or supporting structures at intervals of one and a half to two meters, and separate brackets are used for mounting bends and tees.

Attention: Make sure that horizontal sections and elbows do not rest on communications. The fragments must not come into contact with gas pipes and electrical wiring!

As you can see, it’s quite easy to make stainless steel chimneys with your own hands. To do this you will need 2 pairs of working hands and 1-2 for time. If you still have questions, watch the video on chimney installation:

Tip: Make sure that condensation does not flow past the pipes, falling onto the insulation and insulation. Also carefully treat the joints with sealant. It is important to properly route the chimney through the roof, which is described in more detail in the previous article.

Chimney insulation

This is one of important stages upon completion of the chimney construction. Without insulation, which is provided only for stainless steel sandwich chimneys, the installation will have disadvantages. With a poorly insulated chimney, ensuring stable draft when starting a boiler or igniting a fireplace is problematic. And its rapid cooling reduces the overall efficiency of the entire autonomous heating system. In addition, condensation that forms on the metal walls when the outside and inside temperatures differ, gradually destroys the internal walls of the chimney and reduces its efficiency.

A sandwich-like design is very popular today when installing and insulating chimneys for modern boilers:

• universal;
• solid fuel;
• gas;
• combined.

They operate in interval mode, that is, “stop-start”. Solid fuel boilers They require additional fuel loading and cleaning of the ash pan, so they do not turn off for some time. And constantly operating boilers, when the required temperature is reached when the sensor or relay is triggered, turn off on their own to avoid overheating. When temperature regime indoors drops to a predetermined level, automatic switching on The heating also works automatically.

During the “sleep mode”, the temperature in the chimney also drops, a difference forms outside and inside the chimney, and condensation occurs. When the boiler warms up for a long time, it slows down the operation of the heating system, which leads to excessive fuel consumption.

Used as insulation mineral filler- basalt wool, which is known for its excellent fire-resistant parameters. The pipe is wrapped with it in layers and such a “blanket” is secured with wire and/or clamps. These materials are not afraid of high temperatures, so the chimney can operate on any type of fuel, heating up to 1000°C. However, basalt wool must be insulated from excess moisture, since dampness reduces the effectiveness of insulation.

For waterproofing, galvanized or stainless steel is used, which is attached with self-tapping screws on top of the finished “blanket”. To cope with such work, you will need metal scissors and work skills. But it is easier to order such caps of the required diameter in a specialized workshop ready-made. And at home there will be no problems in completing the final stage of insulation.

Attention: At the end of the installation, be sure to secure the top of the pipe so that it does not blow away during a strong gust of wind or tornado. A chimney must be installed at the top to protect the entire system from the penetration of precipitation.

“Tee-sandwich revision with plug” with a 90° side outlet is one of the elements of the insulated chimneys “Project316” produced by the Alliance ST company. Serves to connect the chimney with the main chimney channel. Equipped with an inspection for maintenance, internal inspection and cleaning of the chimney from soot. A blind plug is installed on the tee.

Elements of insulated (“sandwiches”) chimneys “Project316” are products consisting of two pipes different diameters made from austenitic chrome-nickel steel High Quality produced by KRUPP (Germany): outer pipe made of AISI 304, internal – from AISI 316L. Steels have increased heat resistance, are not subject to corrosion and are resistant to aggressive environments. The space between the pipes is filled with non-flammable thermal insulation material – mineral wool Wired Mat based on high quality basalt fiber ( working temperature up to 750°C). This design promotes rapid heating inner pipe, and within a short time after starting work, the temperature in the chimney rises above the dew point, which avoids the formation of condensation. The thickness of the thermal insulation layer of this series of double-walled elements is 25 or 50 mm with an average filling density of 120-160 kg/m 3, which ensures best thermal insulation taking into account the conditions of the Russian climate.

Thanks to the use of modern equipment in the production of Project 316 chimneys, products of exceptional geometry are obtained. The ideal round shape facilitates error-free and easy assembly of elements, ensures reliability and gas tightness of the entire system.

Laser welding, the best technology currently available, produces products with the thinnest seams. With this production method, alloying elements are not burned out, reliability increases significantly, and the likelihood of corrosion in the vulnerable heat-affected zone is reduced.

To ensure the tightness of tees, which were previously made from two pipes with shaped cutouts and butt welding, it was introduced into production new technology– cold drawing of the edge of the shaped hole of the main pipe of the tee. To the cylindrical flange formed after drawing using contact welding the outlet pipe is welded, thus creating a product with a sealed weld.

To assemble the elements of the Project 316 chimneys, a socket system for connecting modules is used, obtained by cold molding. This is the only correct system that does not narrow the smoke channel and does not interfere with the removal of combustion products. The joints of the elements are fastened with clamps and must be outside ceilings. Wall brackets must be installed for every two meters of the chimney. The elements of chimney systems must be fastened to building structures using consoles and support platforms at least every five meters.

It is advisable to install insulated (double-walled) chimneys if certain sections of the chimney system pass through unheated rooms or outside the building in order to prevent condensation of vapors generated from flue gases inside the duct. Chimneys "Project316" are used for all types of heating units operating on any type of fuel, due to which they are used in both industrial and private applications.

Main features and advantages of the “revision tee-sandwich with plug”:

• Inner diameter: 120 to 350 mm (other sizes on request)
• Lateral outlet: 90°
• Inner circuit: stainless acid-resistant steel AISI 316L(wall thickness: 0.5 mm)
• External contour: stainless acid-resistant steel AISI 304(wall thickness: 0.5 mm)
• Operating temperature: ≤ 600 °C
• Insulation basalt wool(layer thickness: 25 or 50 mm)
• Recommended fuel type – gas, diesel, wood
• Operating mode – wet; aggressive environment
• Quickly overcome the temperature threshold for condensation formation
• High corrosion resistance
• Ideal geometry
• Laser welding
• Cold drawing of the edge of a shaped hole
• Modular assembly system
• Molded socket connection
• Unlimited service life
• Ease of installation and maintenance
• Equipped with revision
• Plug included
• Compliance fire safety

In Rus', for several hundred years, houses were heated with ordinary stoves, and chimneys did not cause any particular trouble. Modern heating systems, which run on diesel fuel, coal or gas, are radically different from their predecessors.

Various combustion products lead to intensive formation of condensate, therefore special attention consideration should be given to the arrangement of the chimney. The greatest demand today is stainless pipe for the chimney, which is very resistant to aggressive substances.

Stainless steel

Stainless steel is a chromium-containing steel alloy with high anti-corrosion properties.

Corrosion resistance is provided by a film of chromium oxides, which is formed when interacting with oxygen.

• To produce a stainless steel chimney pipe, a material with different chromium content is used: Steel grades AISI 430, AISI 410 and AISI 409
• contain 11% chromium. They are called ferritic and are used only in low-aggressive environments, as well as in the manufacture of dishes and decorative elements. Composed of AISI 304 and AISI 321 steels
  in addition to 17% chromium, at least 8% nickel is included. Nickel provides the toughness and ductility of the alloy.
• A stainless chimney pipe made from a material of this class is more resistant to corrosion at temperatures below 450°C. Steels containing nickel and chromium are used for the production of chimneys with mandatory temperature restrictions. Heat-resistant steels AISI 309 class
• contain at least 25% chromium and 20% nickel. They are used for arranging chimneys of fireplaces, gas turbine units and solid fuel boilers. AISI 316 steel
  , in addition to chromium, contain titanium and molybdenum. They are used to make chimneys of almost all types.

A stainless chimney pipe made from steel of this class can withstand temperatures up to 800° C.

• When choosing, you should pay attention to the quality of the material. Steel must meet two criteria:
• high level of heat resistance;

high level of acid resistance Manufacturers often offer AISI 304 stainless steel pipes for chimneys.

It is low in cost and suitable for installing fireplace chimneys where the predominant fuel type is wood.

For chimneys of boilers and stoves that use another type of fuel (not wood), a material whose thickness exceeds one millimeter is needed.

Design of chimneys made of stainless steel

• The straight section of the chimney - the stainless steel chimney pipe can be of different lengths: 0.33 meters, 0.5 meters and 1 meter. This is the basic element for arranging a chimney. It is used for installation of straight horizontal sections.
  Straight sections are connected to other components and to each other using the socket method without the help of additional fastening.

Straight sections of the chimney can be used to line a chimney made of brick.

• A 45° elbow consists of two pipes welded at an angle of 45°. This structural element changes the angle of inclination of the stainless steel pipe for the chimney.
  It can be installed in both horizontal and vertical areas.

• The 90° elbow is a universal element. It consists of four rotating elements that can change the angle of inclination from 0° to 90°.
  They are used to change the slope of the chimney and the connection from the boiler pipe to the main chimney. The elbow is connected to the remaining elements of the chimney using the “pipe to pipe” method.

• 87° tee and 45° tee. They have the same purpose - to remove exhaust gases into the chimney and provide the possibility of servicing (including cleaning) the stainless steel chimney pipe with condensate cut-off. The tees are connected to the remaining elements according to the “pipe to pipe” principle.

• Revision. This item is designed for maintenance, internal inspection and cleaning of soot from chimneys.
  The inspection is installed at the base of the vertical chimney shaft under the tee. Stainless steel chimney pipes also rest on it.

• The condensate collector (“watering can”) is used to remove condensate from the chimney pipe. It is installed under the tee.

• The okapnik is installed on stainless steel chimney pipes that go directly to the street.

The okapnik can be used to decorate the place where the pipe passes through the ceiling.

• protects stainless steel chimney pipes from precipitation. Install it on the top of the chimney.

• The end of the chimney is used for installation on the top of a chimney made of brick. It protects the pipe from precipitation.

• The chimney weather vane is installed at the top of the chimney. It prevents precipitation and wind from getting inside, and the stainless steel chimney pipe works properly.

Once or twice a year it is necessary to treat the mechanical connection of the weather vane with thermal lubricant.

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DIY brick chimney repair

No matter how well the chimney laying work is done, time takes its toll, and even the most reliable buildings are unable to resist its influence. If the first pathological signs of deformation, shedding, or cracking appear, it is best to immediately take measures to eliminate them, otherwise fatal destruction of the pipe will further occur, and then it will have to be rebuilt. In other words, repairing a brick chimney becomes an urgent task.

Chimney repair work can be varied - from sealing small cracks to dismantling the entire structure and erecting a new one.

Causes and consequences of chimney pipe destruction

Artificial destruction may include: poor-quality illiterate masonry; low-grade materials used in the work; improper operation; low qualification of the stove master; non-compliance with the rules and construction plans.

If work is carried out incorrectly, condensation may form in the chimney pipe, and with temperature changes and freezing of water, ice will rupture the mortar in the masonry and destroy the bricks. After such processes, it is possible that the draft may be disrupted, which means that it will be impossible to light a fireplace or stove, since the smoke will not go up the chimney, but will go into the room.

If low-quality or untempered brick is used, it can be damaged by sparks or ignition of gases emanating from the firebox. In the future, these destructions can lead to damage to the entire system. stove heating or even a fire.

Repair of a brick chimney is carried out in cases where it is damaged for other reasons - for example, due to the consequences of spontaneous manifestations or mechanical impact, which led to a violation of the integrity and solidity of the masonry.

Natural causes of destruction include the above-mentioned long-term use, and, as a consequence, the general aging of the structure.

Types of repair work

Chimney repair work is quite labor-intensive, considering that some of the processes must be carried out quite high altitude, in rather difficult conditions.

Repair technology can be different:

• Dismantling and then restoration of a deteriorated brickwork.
• Installation of sleeves made of special materials, into the chimney channel.
• Internal lining of existing channels;

Each of these processes has its own characteristics and difficulties.

Restoration of masonry

If the masonry is partially destroyed, then it is possible to replace the damaged bricks. They are carefully freed from the solution and pulled out of the row. Next, clean the area and place a new one on top of the fresh solution. quality brick.

If the bricks of the chimney are destroyed by more than 15-20%, it must be completely dismantled and a new one must be built. Dismantling is carried out until the row is completely intact, and new masonry is made from it.

In case of major damage and the impossibility of repairs, the chimney is dismantled to the base and rebuilt with new brick. If this is not possible, the chimney is made of steel pipe.

Installing the sleeve

To others possible option chimney repair is his vote, i.e. installation of a sleeve made of metal or ceramic into the channel.

Sometimes this process is carried out immediately during the construction of the furnace, and in other cases - for reconstruction purposes.

Positive sides sleeve installation:

• Sleeves for chimney pipes are manufactured round shape or square with rounded internal corners. Such forms have a beneficial effect on the effective removal of combustion products and do not allow condensation to accumulate. Unlike round pipes, brick very often collect soot deposits and condensation in their corners.
• In addition, being another layer of the chimney, the sleeve reduces heat losses oven, as it increases the tightness chimney.

Preparing for work

Before starting installation, it is necessary to inspect the chimney:

• Check the condition of the masonry.
• Make sure that the design is reliable and that there are no obstacles in the channel where the sleeve will be installed.
• Next, you need to decide on the cross-sectional size of the pipe in order to calculate what diameter sleeve will be needed for it.
• If there are obstacles in the channel, you will have to disassemble part of the pipe in height so that you can easily install the sleeve;
• Make room for work.

Installation

Once everything is prepared, you can begin the installation process.

• The first thing to do is to disassemble the masonry, freeing the channel for installing the sleeve.
• The element being installed must have dimensional parameters that correspond not only to the cross-section of the pipe, but also to its height. In addition, you need to provide a door that will allow you to easily clean the chimney area.
• If the sleeve is installed through the top, it is lowered down in parts. First, its lower part is secured to ropes and lowered to the desired level. Next, the next section of the sleeve must be inserted into the lowered part of the sleeve. At the point of their connection, the masonry must be dismantled for better bonding. In this way, the entire structure is assembled, passing through the entire chimney channel.

• Between the walls of the chimney and the liner being installed, there should be a small space, which is filled with non-flammable heat-insulating materials.
• After completion of the work, a metal umbrella is placed on top of the pipe head to protect the chimney from dirt and moisture.
• The last stage The brickwork is being sealed in those places where it was dismantled to connect the parts of the sleeve.

Channel lining

Lining is the treatment of the internal chimney channel with special mixtures, or, to put it simply, plastering the internal walls. Using this process, it is possible to put the destroyed walls in order, making them fairly smooth, and restore the functionality of the chimney.

The lining is carried out using “Masan” and “Mordax” mixtures, which can very quickly, without labor-intensive dismantling of the brickwork, bring the channel into a functional form. The advantage of this technology is that the cross-section of the chimney does not become smaller, and all work is carried out in a few hours. The non-flammable composition of the mixtures has good adhesion to any surface and can withstand temperatures reaching up to 900 degrees and above.

• “Masan” is a Russian development; it is made on the basis of perlite. Over the entire period of its use (since 2005), it has shown itself only with best side.
• The Mordax mixture, produced in Finland, is made on the basis of granite chips. It is fireproof and adheres well to the surface. The solution is prepared by diluting with water to the required consistency of the dry Mordax composite mixed with lime and cement.

The work is carried out as follows:

• First, it is necessary to cover the surface around the chimney so that the mortar mixture does not splash the roof.
• Next comes cleaning the chimney duct using iron brush, from exfoliated parts of brick and soot.
• After cleaning the canal, it must be moistened.

• Next, using a special brush and a winch, the lining is made.
• As the brush moves, the lining mixture is distributed onto the channel walls.
• The process of moving the brush is repeated three times, and after each coating it is necessary to allow the applied layer to dry.

It should be clarified that you may need not one, but two brushes, since the chimney may have a different cross-section along its entire length, and the brush must have a size that matches the size of the channel.

Video - Brick chimney. Repair

Video - Replacing and installing a chimney

All of these repair methods are good if it is possible to implement them. But if the volume repair work is too large or the chimney is irreparably damaged, then the best option will be his complete replacement chimney. And the best decision would be to invite an experienced, qualified craftsman to carry out this work.

kamin-expert.ru

chimney inspection

The plug is a pipe element covered with a plate. Installed on tees to control and collect soot and other fragments entering the smoke channel

Elements are produced in the range from 80 to 800mm.

Single-wall chimney systems are designed for indoor installation. They do not have an insulating layer, which increases the heat transfer of the stove and guarantees faster heating of the heated room. Single-wall chimneys are prohibited from being installed outside buildings, since without an insulating layer they will cool very quickly, and this will lead to the disappearance of draft, a decrease in the efficiency of the generator, blockage of the smoke exhaust channel and the entry of toxic combustion products into the premises.

The grade and thickness of steel is influenced by the type of heat-generating device (heat resistance requirements) and the type of fuel used (acid resistance requirements). When manufacturing chimneys, it is necessary to use special alloyed high-quality stainless steel with increased corrosion resistance. The thickness of the material is at least 0.5 mm.

The diameter of the chimney must be no less than the diameter of the smoke outlet pipe of the heat generator. In addition, the device manufacturer's recommendations should be followed. According to existing standards, the speed of passing gases should be in the range of 0.15-0.6 m/s, and the degree of vacuum should be in the range from 10 to 20 Pa. If these characteristics exceed the specified values, it is necessary to regulate the draft using a special slide valve. If the speed and vacuum, on the contrary, are less than the permissible values, then combustion products may enter the room. In addition, excessively strong draft will lead to incomplete combustion of fuel, its excessive consumption and, naturally, a significant decrease in the efficiency of the heat generator.

USEFUL TIPS FOR THE BUYER:

permissible elevations of chimneys above buildings;

chimney assembly rules;

chimney configuration;

What to choose: single-wall or double-wall sandwich chimney?

Choosing a chimney steel grade;

CHIMNEY INSTALLATION DIAGRAM

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Inspection plugs for stainless steel chimneys

The inspection plug with a diameter of 115 mm is made of 0.5 mm stainless steel. Often, a revision plug closes the internal contour of the chimney and provides access to it for cleaning and maintenance. It can be installed in a sandwich...

On the website you can buy a 120 mm chimney in complete set. All components are produced in our factory in an assortment.

The revision plug with a diameter of 115 mm is made of stainless steel with a thickness of 0.5 mm. Often, an inspection plug closes the internal contour of the chimney and provides access to it for cleaning and maintenance. Usually they are mounted in triplets...

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The 180 mm revision plug is made of 0.5 mm thick stainless steel. Provides tight connection and access to inner contour chimney for cleaning and maintenance. As a rule, it is installed in a tee. On our website you can...

Buy an inexpensive 200 mm revision plug made of 0.5 mm thick stainless steel. An inspection plug is installed in a single-wall or sandwich tee for inspection access and cleaning of the chimney. With us you can inexpensively...

Equip your chimney with a revision plug with a diameter of 250 mm, made of stainless steel, 0.5 mm thick. The inspection plug will provide access to chimney maintenance and cleaning. The revision plug is usually installed in the tee....

To ensure access and cleaning, equip the chimney with an inspection plug with a diameter of 300 mm made of stainless steel 0.5 mm thick. The inspection plugs are suitable for both 300 mm and single-wall sandwich tees....

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A 500 mm inspection plug is usually installed in tees for inspection access to the chimney. The price for a 500 mm stainless steel chimney is relevant for each component....

A 550 mm inspection plug is usually installed in tees for inspection access to the chimney. The price for a 550 mm stainless steel chimney is relevant for each component....

A 600 mm inspection plug is usually installed in tees for inspection access to the chimney. The price for a 600 mm stainless steel chimney is relevant for each component....

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Inspections for sewer pipes - what is it?

Sewer inspection is a separate element installed in current system. It is provided for by SNiP, so at the design stage it must be taken into account even in a private house. It is designed to simplify drain cleaning, as well as provide constant monitoring of the condition of the pipeline.

What is a sewer inspection?

The sewer inspection is a kind of tee, but a lid is hermetically attached to this fitting on one of the branches. This prevents leakage, and if necessary, it can be removed for inspection and cleaning. After installation, the difficulties associated with lengthy searches for blockages disappear, since in accordance with the standards there is a small distance between the control points.

Nowadays cast iron fittings are practically not manufactured due to the lack of need for them. They were replaced by plastic, widely used by the population because of its lightness and practicality. So these are the options you should be familiar with in order to properly handle the installation.

Differences between plastic sewer inspection

Revisions for plastic sewer pipes very different from cast iron. At first, buyers noted only a change in material, but manufacturers also made several design changes. These are the ones that should be studied, giving detailed description:

• The bend on the plastic revision is installed at a right angle, and on the cast iron revision it is mounted at an angle of 45 degrees.
• The lid screws tightly without bolts, as on cast iron structures.

Both features suggest that it is easy to install an additional element on a 110 pipe. To do this, simply insert the fitting into the cuff without wasting time. Professionals definitely use such projects, and not only because of the current SNiPs.

Current standards for sewer inspection

Domestic sewerage and plastic inspection are inseparable. The entrance is always installed with a 110 mm pipe, and if necessary, a transition to inner diameter 50 mm for connecting plumbing. In this case, it is necessary to take into account the current standards:

• With a pipe diameter of 50 mm in horizontal sections, the element must be installed every 15 m.
• If the conversation is about production Wastewater ah, the distance needs to be reduced to 12 m.
• If the waste water contains a large number of suspended particles, the distance should not exceed 10 m.
• With a pipe diameter of 110-150 mm, in the absence of large contamination between adjacent inspections can reach 20 m.
• For domestic wastewater with a pipe of 110-150 mm, the distance should be 15 m.
• Industrial wastewater with suspended particles with a pipe diameter of 110-150 mm should be checked at a distance of 12 m.

Such requirements ensure easy maintenance and removal of blockages. Moreover, such elements cannot be abandoned even in a small country house. Most often, complex branched sewage systems are installed in them, so in a critical situation cleaning is difficult. It’s worth saving yourself from problems in advance by using correct design.

Advantages of polypropylene revisions

Modern pipeline for drainage water is assembled from lightweight material. Revisions have also changed, so today it is most practical to use polypropylene elements. They have a number of advantages that have proven irreplaceable. About what subtleties we're talking about?

• Maximum temperature wastewater 95 degrees;
• Smooth surface reduces the risk of blockages;
• Does not require painting;
• Service life up to 50 years;
• Frost resistance;
• Mechanical strength;
• Resistance to corrosion and chemical environments.

Separate structural element sewer system is in no way inferior to a pipeline. After its installation, you don’t have to worry about damage technical characteristics. Because of this, after adding to the project, it is not necessary to make categorical changes to ensure the reliability of wastewater movement.

Revision – required element, approved by current standards. Professional design requires resorting to various fittings that are often considered unnecessary. By clarifying the reasons for installation, you can make sure it is necessary, so that you don’t have to worry about cleaning and regularly checking for blockages.

1 General rules for the design and assembly of chimneys

The design and installation of chimneys must be carried out in accordance with current regulations:

SNiP 41-01-2003; VDPO (RULES FOR WORK, REPAIR OF OVEN AND SMOKE CHANNELS); SP 7.13130.2009.

The purpose of the chimney is to remove combustion products and provide normal draft to maintain combustion. The draft level depends on the height of the smoke channel and the diameter of the chimney.

When installing a chimney, the following rules must be observed:

• The height of the chimney from the heating device to the head must be at least 5 m.
• The elevation of the chimney above the ridge/parapet is determined according to the diagram (Fig. 1).

• The elevation of the chimney above closely spaced roofs of neighboring buildings must be at least 1.5 meters.
• If the chimney rises 1.5 meters or more above the roof, it must be additionally secured with braces (Fig. 2).
• In the chimney design, it is recommended to provide plugs with a condensate drain to remove condensate and/or inspection to allow cleaning and maintenance of the smoke channel

• If the roof is made of flammable materials, a spark arrester made of mesh with a cell no larger than 5 x 5 mm should be installed in the chimney.
• When designing and assembling a chimney, it is not allowed to narrow the diameter of the chimney, but it is allowed to widen it. (For example, to assemble a chimney heating stove with a chimney outlet diameter of 115 mm, you cannot use a chimney with a cross section of 110 mm, but you can use a 120 mm chimney using an adapter from 115 mm to 120 mm).
• The length of the horizontal section of the chimney should not be more than 1 meter.
• The joints of the chimney elements should not coincide with the places of ceiling and roof passages, or passages in the wall.
• Bends and tees must be installed so that they do not bear the load from the weight of the chimney elements installed above them.

2 Chimney design and calculations mounting elements

CHIMNEY DIAMETER. The diameter of the chimney must be equal to or greater than the diameter of the outlet of the heating device. To transition from one diameter to another, use the “Adapter” element of the corresponding diameter.

SELECTION OF PIPES TYPE. The use of a regular pipe or an insulated pipe depends on the location of the chimney. Conventional pipes are used only in heated rooms. Insulated pipes can be used in heated and unheated rooms, and outside. The choice between a regular and insulated pipe in heated rooms is made by the consumer, comparing cost, fire safety and comfort during operation. To switch from a regular chimney pipe to an insulated pipe, use the “Transition from non-insulated to insulated” pipe.

SUPPORTING PLATFORM. The choice of chimney design with or without the use of a “Cantilever Bracket” support platform is determined by the design of the heating device and the location of the chimney.

Without a support platform, it is possible to use only a flat vertical chimney resting directly on heating device. Figure No. 3.

In all other cases, you must use support platform"Cantilever bracket". Figures 4, 5, 6. Location load-bearing element The “cantilever bracket” should be located at least 5 meters along the height of the chimney.

TURNING THE CHIMNEY. To change the direction of the chimney, use a “bend or outlet insulated at 45 or 90 degrees”

CONDENSATE COLLECTION AND CHIMNEY CLEANING. To collect condensate from the chimney and clean the chimney, use a “Tee or tee insulated at 45 or 90 degrees” together with the element “Plug with condensate drain” or “Blind plug”.

PASSAGE THROUGH THE CEILING. If the chimney passes through the ceiling, it is necessary to use the “Insulated passage through the ceiling” element. Which should be 70 mm greater than the thickness of the ceiling.

IMPORTANT

• In some heat-generating devices (furnaces, boilers) there may be elevated temperature waste gases. This will require additional insulation building structures and individual design of the ceiling passage assembly to ensure fire safety. During operation of the chimney, it is necessary to control the temperature at outer surface element “Passage through the ceiling is insulated” and, if necessary, replenish the insulation layer as it shrinks.
• The surface of the chimney heats up during operation. If the chimney passes near building structures made of flammable materials, it should not heat them above 50°C (clause 4.39.8 of GOST R 53321-2009).

PASSAGE THROUGH THE ROOF. If the chimney passes through the roof, then it is necessary to use the element “Passage through the roof” or the element “Rubber seal for the roof”, straight or angular. When installing a chimney through the roof, it is necessary to comply with the current regulations. building codes and fire safety regulations.

COMPLETION OF THE CHIMNEY. To complete the chimney, standard elements “Umbrella” or “Insulated Umbrella” are used.

IMPORTANT
- For heating installations When operating on gas, the chimney must remain open!

FIXING THE CHIMNEY. The fastening must exclude the possibility of deflection and any displacement of the chimney from the wind or its own weight. To do this, use the “Wall Fastening” element, which is installed at the rate of: 1 fastening for every 2 meters of the chimney.

To count required quantity elements, draw a chimney diagram taking into account all the above rules and recommendations. The number of straight sections of bends and tees is determined by the layout of the chimney and its design. Typical chimney assembly diagrams are shown in Figures 3 to 6.

3 Chimney assembly

• Installation of the chimney begins from below, from the heating or heating device up. To be able to regulate the draft, install a damper element in the chimney.
• It is recommended to assemble the chimney elements “by condensate” so that condensate and tar deposits do not escape outside.
• All joints of pipes and other elements (bends, tees, etc.) must be sealed with heat-resistant mastic-sealant, carefully connected to each other to the full depth of the landing socket and fastened with a “Clamp” element in EACH connection.
• After installation, a test fire should be carried out, during which it is necessary to check the tightness of the joints and make sure that adjacent structures made of combustible materials are not exposed to high temperatures and do not heat up.

When using the chimney for the first time, an odor and light smoke may appear as a result of the evaporation of oil residues from the metal surface and the crystallization of sealing materials.

When a stainless steel chimney, including a double-walled one, is heated, tarnished colors may appear on its surface, which is not a defect. The chimney needs maintenance. The chimney should be cleaned regularly, at least 2 times per heating season.