How to flush the secondary heat exchanger at home. How to flush a gas boiler heat exchanger at home? What is a booster and how to mount it yourself

Content

Flushing of heat exchangers is required for gas boilers at intervals of 2-3 years... If we neglect this procedure, over time, the boiler unit will become worse to cope with its functions, its efficiency will almost halve, and in order to maintain the usual temperature regime in the house during the heating season, it will be necessary to force the unit to constantly work at full capacity.

Gas boiler heat exchanger requiring cleaning

Why is this happening and why is it dangerous? Cleaning the heat exchangers from the outside makes it possible to remove the accumulated soot layer - the thicker the layers, the worse the boiler works and the higher your energy costs. Flushing the boiler from scale helps to remove scale that has accumulated on the inner surface of the heat exchanger. Due to scale, the working section of the heat exchanger narrows, the coolant heats up more slowly - this also negatively affects the efficiency of the autonomous heating system and adds load to the boiler.

If the preventive maintenance of the gas boiler is not carried out in a timely manner, gas costs grow every month and the risk of boiler breakdown increases. Steel boilers, constantly operating at full capacity, quickly burn out. In the vast majority of cases, boilers fail at the height of the heating season, when they operate at full load. Calling a foreman to repair a boiler unit with mandatory cleaning and flushing of the heat exchanger will cost a serious amount.

This is how the scale formed on the heat exchanger looks like

To avoid problems and save money, it is enough to carry out preventive measures every three years. Flushing a gas boiler is a set of works that can be carried out on your own, having spent everything from 1.5 to 4 hours.

How do I clean the heat exchanger?

The heat exchanger is cleaned at the end of the heating season. To carry out the work, it is enough to have a standard set of tools available. Before starting work, it is necessary to disconnect the boiler unit from the gas network (main or local) and electricity.

Consider how to clean a floor standing gas boiler:

• the first step is to dismantle the burner;
• all wires must be disconnected from the gas valve;
• a thermocouple is removed from the combustion chamber, which is connected to the gas valve by a capillary tube;
• the fuel supply pipe is disconnected;
• bolts or nuts (4 pcs) fixing the plate with the burner are unscrewed, the assembly is removed outside.

It is convenient to clean the gas boiler burner with an old toothbrush. Soot must also be removed from the flame sensor, igniter, piezoelectric device for automatic ignition.

To get to the boiler heat exchanger, remove the top cover of the unit, disconnect the draft sensor and chimney, remove the insulation, dismantle the casing fasteners and the casing itself. Having gained access to the heat exchanger, it is necessary to remove the turbulators from it.

A soft metal brush is suitable for cleaning the turbulators, and the heat exchanger itself is freed from soot deposits with a miniature scraper made of thin metal. A long-handled brush is also used. First of all, the smoke tubes are cleaned and swept, then the soot that has crumbled on the bottom should be removed.

The wall-mounted boiler is cleaned with a toothbrush

Cleaning the wall-mounted heat generator. After turning off the gas supply, it is necessary to dismantle the front panel of the boiler. Then the front cover is unscrewed, which closes the combustion chamber. It is recommended to cover the nozzles with a sheet of heavy paper to prevent the burner from clogging up with falling soot. Do-it-yourself cleaning of the heat exchanger of a double-circuit boiler is performed using an old toothbrush or a brush with metal bristles. After cleaning is complete, brush around the heat exchanger and carefully remove the paper containing the collected soot. How the procedure is performed, see the video below.

Flushing of a single-circuit and double-circuit gas boiler

Flushing the heat exchanger of a gas boiler is necessary to remove internal deposits that can disrupt the normal circulation of the coolant in the heating system and cause problems with the supply of hot water to the local DHW system. Also, the sediments may contain substances that destroy the metal.

How often this activity is required to be performed depends on the type of coolant. If purified water circulates in the system, it is enough to do prophylaxis every four years, removing deposits. The system with antifreeze should be flushed every two years and the coolant should be changed regularly - under the influence of high temperatures, it changes properties over time and can become dangerous for the metal elements of the system.

How to flush the heat exchanger of a gas boiler?

Do-it-yourself flushing of the gas boiler heat exchanger is carried out mechanically or chemically, and the second option is more effective.

Mechanical method... In this case, remove the heat exchanger in order to clean it by hand. Dismantling this part is a troublesome task, the complexity of which depends on the design of a particular boiler model. In any case, the result of mechanical flushing is lower than that of chemical flushing.

Mechanical method of descaling the heat exchanger

Chemical method... It allows you to flush your boiler without dismantling the heat exchanger, but requires the use of special equipment - a booster.

You can do it yourself:

• flushing solution is poured into a tank with a volume of 15-20 liters;
• hoses connected to the pipes of the heat exchanger are lowered into the tank;
• the boiler turns on for heating (it is necessary to maintain a stable temperature of about 50 degrees);
• a circulation pump (preferably reversible) should be connected to the assembled system, which will force the flushing solution to pass through the heat exchanger.
• If you additionally install a strainer on the supply hose, mechanical impurities will not be cyclically driven through the heat exchanger.

Note! From time to time switch the system to travel in the opposite direction using the reversible pump, or simply by swapping the hoses. At the same time, the heating of the boiler is turned off.

Before connecting the equipment for flushing, it is required to release the pressure in the heating system to zero using the Mayevsky valve, drain the coolant from the heat exchanger, and clean the built-in mud filter of the boiler (if any).

Flushing the double-circuit heat exchanger

If the double-circuit unit is equipped with a bimetallic heat generator, which simultaneously heats the coolant and prepares water for hot water supply, then cleaning is carried out according to the method described above, using a booster.

On models with a secondary heat exchanger, this stainless steel part must be removed and washed separately. To dismantle, remove the front panel, unscrew and slide the control unit. The secondary heat exchanger for the gas boiler is bolted at the bottom. It is removed and boiled on the stove in water with citric acid or special means.

How to flush the heat exchanger of a gas boiler?

Citric acid is a popular folk remedy, the solution is prepared at the rate of 20 g of acid per 1 liter of water, but a higher concentration is also allowed. You can also use special products that are safe for metal and heating system seals.

In any case, at the final stage of cleaning, clean water should be pumped through the heat exchanger with a booster in order to remove traces of cleaning agents that are aggressive to metal, and only then bring the unit into working condition.

How to perform cleaning and flushing work without removing the heat exchanger using a circulation pump, see the following video.

Cleaning the boiler is a mandatory procedure that should be carried out regularly. To do this, it is necessary not only to flush the heat exchanger of the gas boiler from scale, but also to clean the chimney from soot. All of these steps are necessary to keep the device in working order, as failure to do so could result in an explosion.

• Show all

  Self flushing

  Typically, flushing the heat exchanger for a gas boiler is required once every three years. If you do not do this procedure regularly, then over time, the efficiency of the boiler decreases significantly, the draft decreases, as a result of which the device cannot perform its functions. In this regard, it is necessary to constantly turn on the boiler at full capacity, which significantly increases the gas bill.

  
  

  Cleaning the heat exchangers makes it possible to remove the formed soot layer. How thick it is will determine the direct operation of the device, its efficiency, performance and, accordingly, energy costs. Flushing helps to descale the inside of the heat exchanger. Due to such formations, the section of the inner pipe narrows, the coolant heats up much longer, and this also adds a load on the boiler.

  Gas boiler heat exchanger flushing

  If you do not carry out regular prevention of the appearance of plaque, then over time the risk of damage to the device increases. A badly running heat exchanger sometimes cannot even be repaired. Replacement is the only way to get your device repaired. Boilers made of steel constantly burn out due to the fact that they operate at maximum power. According to statistics, most breakdowns occur precisely at the height of the heating season, when the devices are operating under heavy load.

  Already in this case, you need to call a master not only to clean the heat exchanger from scale, but also to repair the device as a whole.

  In order to save budget, regular descaling should be carried out every three years. This can be done on your own, while such a procedure will take no more than 4 hours. If you get your hands on it, you can do it in 1.5-2 hours of work.

  

  Preparatory work

  Cleaning is best done after the heating season has come to an end. To do this, you just need to have a standard set of tools. Before starting work, it is required to disconnect the device from the gas and electricity supply. The procedure for cleaning a floor-standing gas boiler is as follows:

  • dismantling the device (turning it off);
  • disconnecting all wires;
  • dismantling the thermocouple from the combustion chamber;
  • disconnecting the fuel supply pipe;
  • unscrewing all the bolts that hold the heat exchanger.

  Thus, it is possible to remove the gas burner from most boilers, for example, by Ariston. It is very convenient to clean the gas burner with a toothbrush. Then the flame control sensor is cleaned, soot is removed from it. In addition, it is necessary to clean the igniter and the device for automatic ignition from it. Use a soft brush to clean the turbulators. Using a small scraper, the soot build-up can be removed from the heat exchanger itself.

  Flushing the heat exchanger of a double-circuit gas boiler

  

  Mechanical method

  Cleaning of a bithermal, fire tube or plate heat exchanger inside can only be carried out with the help of special equipment. For hydrodynamic flushing, a high pressure pump is used. With its help, you can clean the inner surfaces of small dirt. Its advantages are the speed of work. In addition, the heat exchanger does not need to be removed for cleaning.

  For chemical or acid washing, an acid-resistant booster pump is used. The advantage of using this method is the removal of even old scale. However, if acidic cleaning agents are incorrectly used, the life of the heat exchanger will be significantly reduced.

  The complex tool "Streamer" is also actively used for these purposes. It allows for electrical discharge cleaning. Removes scale of any complexity. In this case, the metal is not destroyed by its use. The disadvantage can be considered a significant noise during operation.

  Of all the methods at home, it is possible to clean the boiler only chemically. The factory booster is completely replaced by an ordinary pump. All other options are quite expensive., since the equipment is not cheap, so it is impractical to use them. It is better in this case to contact service centers that specialize in such cleaning.

  

  Chemical methods

  If your home has a booster, you can do the chemical wash yourself. In addition, such a device is easy to do with your own hands. In fact, it is a pump with two hoses and a capacity for ten liters of water. In order not to damage the surface of the heat exchanger during operation, it is necessary to select the correct acid concentrate for cleaning. If such work is carried out constantly, then a lot of scale should not form on the walls. In these cases, citric acid can be used. In this case, the maximum concentration is up to 200 g per 5 liters of water.

  
  

  If cleaning was carried out for a relatively long time or unprepared hard water with a large amount of mineral salts was used for work, then more serious methods should be used. Products based on orthophosphate, sulfuric or hydrochloric acid are ideal. If it is decided to use hydrochloric acid solutions, then this cannot be done without the presence of corrosion inhibitors in its composition. Otherwise, the surface of the heat exchanger may be severely damaged.

  Do-it-yourself flushing of a gas boiler plate heat exchanger at home

  After all work, it is imperative to clean with neutralizers. Their composition is selected depending on the cleaning agent. For example, if you are using citric acid, regular baking soda will work well. And if the means of factory production, then it is better to immediately purchase the appropriate neutralizer for it. Typically, manufacturing plants also sell neutralization agents along with an acidic cleaning agent.

  Cleaning different types of heat exchangers

  Depending on what type of heat exchanger is installed in the boiler, the method of cleaning it will also differ. It is important to use not only the top of the device, but also to carry out internal prevention.

  Heat exchangers are of three types:

  1. 1. Lamellar. They can be divided into two more subspecies - primary and secondary.
  2. 2. Fire-tube. Designed for floor-standing units.
  3. 3. Bithermal. Used in compact models (wall-mounted and floor-standing).

  It is worth noting that all types of cleaning must be performed by a master. Without relevant work experience and knowledge, such actions cannot be carried out.

  Fire-tube type of tank

  Flushing of the heat exchanger of single-circuit gas boilers of the fire-tube type is carried out in two ways. One is for floor-standing units, and the other is for wall-mounted units. The advantage of cleaning floor-standing units is that they do not need to be dismantled but simply require access to the heat exchanger.

  First, turn off the tap to disconnect from the gas supply. After that, all actions take place in the following sequence:

  • providing access to the fire tube heat exchanger;
  • cleaning it;
  • assembly of all parts in the opposite direction.

  There are no universal rules for assembling or disassembling certain types of boilers during the cleaning of heat exchangers, therefore, the diagram of the unit itself must be looked at in the instructions from the manufacturer and such actions must be carried out on it.

  As for the heat exchangers of secondary boilers, it is imperative to flush the secondary circuit. It needs to be cleaned much more often than the primary one. This is due to the fact that it works with untreated water, which has a large composition of mineral salts that actively settle on the walls of the heat exchanger. The same rules can be applied to bithermic devices. You can descale the heat exchanger of a gas boiler without completely dismantling it. To do this, the gas injectors must first be shut off to avoid contamination. Having previously opened the lid of the device and taking an ordinary nylon brush, you can completely clean the unit from dirt and scale.

  But if this method does not help, then the heat exchanger is removed and lowered for several hours in a special solution. Then the unit is cleaned again. As an alternative to the gas boiler heat exchanger cleaning agent, you can use gels for cleaning ovens and grills. They will also help in this case. If such actions did not help, then the device needs to be changed.

  Before cleaning the heat exchanger of a double-circuit boiler and proceeding with its disassembly, it is necessary to disconnect the unit from the gas and electricity supply. You also need to remove both circuits. To begin with, the secondary (it is easy to remove, since it is located immediately behind the boiler cover), and then the primary (there may be problems with it, since it is necessary to remove the combustion chamber to dismantle it).

  Required time frames

  A very important question is the timing for cleaning the boiler and the frequency of such work. These data, as a rule, are indicated by the manufacturer in the technical documentation. If we are talking about closed circuits, that is, conventional single-circuit devices, then cleaning must be carried out much less frequently. It can be done once every two or three years.

  Double-circuit boilers, like bithermic boilers, must be cleaned at least once a year. If there are difficult operating conditions, the use of untreated water, then it is better to do this twice a year.

  In order to understand whether it is necessary to clean the boiler right now, you need to watch for the appearance of some signs:

  • traction has decreased significantly;
  • with the same gas consumption, less heat is obtained at the exit;
  • the burner does not burn well or does not ignite;
  • traces of soot on the front door;
  • slow temperature rise by the boiler.

  Neglect of regular cleaning of the heat exchanger and chimney can cause not only equipment failure, but also endanger the life and health of the residents of the house. A blocked chimney and heat exchanger can cause serious accidents.

If you wish, you can clean the heat exchanger of a double-circuit boiler with your own hands, without resorting to the services of specialists. This procedure does not take much time, moreover, there is no need to spend extra money. The main thing is to follow some rules and know the principle of operation of a gas boiler. Spending only 2-3 hours of time, you can qualitatively clean the equipment from contamination.

A gas boiler heats up water when gas is burned in it. The structure's heat exchanger is a copper or steel bent pipe. When the gas is converted to energy, the heat exchanger also heats up, transferring heat to the heating system. Heating is carried out thanks to special plates, they also help to raise the temperature and direct it to one of the circuits of a two-circuit system.

The heat exchanger is made of the following materials:

• Copper;
• Stainless steel;
• Copper alloys.

This is because copper and its derivatives conduct heat well.

These plates tend to get covered with deposits due to contact with water, so they must be cleaned every two years before turning on the heating for the winter.

If the water is hard enough, you will have to descale the heat exchanger once every 2 years. You can do this yourself, having prepared the necessary tools in advance.

Cleaning methods: how to clean a gas boiler

To prevent overheating of equipment parts, breakdowns and an increase in fuel consumption, periodic flushing and cleaning of the heat exchanger and other elements is required.

The heat exchanger can be cleaned in several ways:

• Manual cleaning, which involves removing the coil, it can be carried out mechanically, or you will have to rinse the pipe with a special compound that dissolves salt;
• Cleaning with an acidic liquid using a booster;
• A variant of hydrodynamic flushing with the use of increased pressure is possible.

Manual cleaning is done with a stiff brush and vacuum cleaner. For a double-circuit boiler, you should use an anti-salt liquid from limescale. First, the coil is removed, and after the procedure it returns to its place. Particular attention must be paid to checking the tightness.

You can also clean the pipe with a booster. For this, a special solution is passed through it, which is able to remove even deposits of iron compounds. Finally, the acid is neutralized by another liquid, which is pumped through the pipes.

The hydrodynamic method allows you to effectively destroy plaque and deposits by increasing pressure and using abrasive substances pumped into the coil.

Procedure: how to clean the boiler from scale, carbon deposits and soot

If it is decided to do the procedure for cleaning the structure with your own hands, before carrying out work at home, you need to turn off the electricity, turn off the gas, close all the valves of the heating system and the boiler.

All actions should be performed carefully, disassembly and assembly requires special care:

• The boiler cover is removed;
• Next, remove the gas burner, remove carbon deposits from the electrodes, you can rinse the surface with water and detergent, rinse;
• Clean the injector and nozzles with a soft-haired brush;
• Next, the fan is removed, and its blades are cleaned;
• The wall of the AGV combustion chamber is removed;
• The heat exchanger should be cleaned of soot, rinsed from limescale with citric acid or a special compound;
• After dismantling the coil, it is necessary to clean the bottom of the boiler;
• Then the filter intended for cold water is cleaned, blown and rinsed with clean water;
• All parts are returned to their places;
• The tightness of the AOGV is checked.

After completing all the necessary procedures, you can open the gas valve and turn on the electricity.

When the boiler has been running for a long time, soot deposits will gradually form on the burner. When it accumulates in large quantities, it can cause equipment malfunction. Therefore, you must periodically remove it.

For mechanical cleaning with small accumulations of dirt, you will need:

• Brush;
• Brush;
• A thin needle.

The gas duct is wiped without fail. The surface of the nozzles is cleaned with brushes or a brush. A needle is used for the holes. In no case should the hole be enlarged, as the combustion process may be disturbed.

If there is a lot of carbon deposits, acidic solvents can be used.

Do-it-yourself cleaning of the gas boiler "Aton" (video)

Any gas boiler, even if it is produced by such well-known companies as "Aton" or "Vailant", requires respect and care. Timely prophylaxis, flushing and cleaning from various types of contamination is the key to uninterrupted and long-term operation of this type of equipment. However, when doing independent work, it is important not to forget about the correct assembly and safety rules.

- scale formed on the heat exchanger, which has to be cleaned and washed periodically. With an increase in the layer, the boiler efficiency decreases. To increase productivity, you have to increase the power. This increases fuel consumption and accelerates wear on the unit.

The scale layer interferes with the proper cooling of the heat exchanger. At one point, the unit will fail, or the circulation pump will burn out from overload. How is the heat exchanger flushed, what means can be used?

A signal for the user that it is time to clean the boiler - a decrease in heat transfer, an increase in gas consumption (). But it is better not to bring it to this: the thicker the layer of dirt, the more difficult it will be to cope with it on your own, and cleaning by professionals will cost a pretty penny.

Under normal conditions, do-it-yourself cleaning of the heat exchanger of a double-circuit boiler is carried out every two years (). If the water is hard, more often. Particular attention is paid to the secondary heat exchanger through which the hard tap water flows.

The second required action is the removal of soot, which is deposited on the outer surface of the heat exchanger housing. There are no strict recommendations about the frequency of cleaning - the amount of soot depends on the quality of the gas used, on the efficiency of the filters in the supply, on the design features of the boiler, etc.

The need for cleaning can be determined visually, or this work can be done in conjunction with the internal flushing. Large accumulations of limescale and soot in the aggregate can reduce the heating efficiency of the boiler by half.

If antifreeze is used instead of water in the heating circuit, the regularity of cleaning depends on its brand: chemical components are added to some antifreeze liquids that counteract the accumulation of plaque.

How to clean the heat exchanger of a double-circuit boiler and how often it needs to be done is indicated in the instructions for the model. But these recommendations are usually designed for ideal operating conditions (water composition, etc.), which usually do not exist in real life.

Cleaning methods

How to flush the heat exchanger of a double-circuit boiler at home? In some cases, disassembly of the unit is mandatory, while others can be dispensed with. The purpose of dismantling is to provide access to the heating element. When cleaning with disassembly, you can get by with minimal costs, but this option is long and laborious.

Sometimes partial disassembly is carried out - for example, to remove soot from the fire tube heat exchanger of the floor boiler. The heat exchanger itself at home cannot be dismantled, it frees access to it: the cover with the chimney outlet is also removed.

How to remove a heat exchanger from a wall-mounted gas boiler? First, the electrical unit is de-energized, the water supply is cut off, water is drained from both circuits and the expansion tank. After that, the heat exchanger is dismantled.

Flushing

How to descale the heat exchanger of a gas boiler with your own hands? With a small amount of plaque inside, you can do with manual rinsing using a citric acid solution.

With a thick layer of limescale, a rinsing system is required to circulate the detergent for several hours. For this purpose, a 10-liter tank with a pump is suitable (you can use a circulation pump from the circuit). Two hoses from the pump are connected to two connections of the heat exchanger.

There are three cleaning methods:

• mechanical;
• chemical;
• hydrodynamic.

In the first case, you can use a brush, scraper, vacuum cleaner to remove plaque. The parts of the heat exchanger are pre-soaked in solutions of cleaning agents.

During chemical treatment, an acid wash solution is pumped into the system using a booster and is driven through a heat exchanger for several hours. Acidic solutions remove ferrous and carbonate sediments well. At the end of cleaning, the agent is drained and a neutralizing agent is poured in.

The hydrodynamic method is the injection of water with abrasives into the system under pressure. Thus, the inner surfaces are cleaned mechanically, but the cleaning efficiency is higher than with manual processing. Flushing can be performed without dismantling the system, but it is quite expensive. When self-cleaning, the pressure in the circuits must be monitored in order to avoid rupture of the heat exchanger.

Chemical Compositions

How to flush the heat exchanger of a gas boiler? The safest option is citric acid. Industrial cleaning agents for gas boiler heat exchangers - Cillit, DETEX, Sanax.

Hydrochloric acid is more effective. But its use is more dangerous for both the user and the system. Concentrated acid can destroy the inner protective layer of the heat exchanger and also increase the brittleness of the metal.

External treatment of contaminated parts is carried out with special compounds to remove soot and carbon deposits. As a last resort, you can use household detergents.

Video about flushing the heat exchanger of a gas boiler.

A good host always makes sure that his house is warm and cozy, especially on cold winter evenings.

The most optimal option for heating a dwelling is a heating system with. Therefore, it will not be a secret for anyone that the warmth and comfort in the house will depend on the stable operation of this boiler.

In order for the gas boiler to function normally, it is necessary to carry out regular maintenance of this unit, which consists in cleaning all components and parts from contamination. (For more information on how to clean soot from a gas boiler, read.

One of the important structural elements of a gas boiler is a heat exchanger, the technical condition of which determines the functioning of the boiler as a whole. In this article we will talk about what a heat exchanger is, as well as in what ways you can flush it.

What is a heat exchanger

This device is a small pipe structure along which the coolant moves. The heat exchanger in the gas boiler is located just above the firebox.

This is done so that the thermal energy received from the combustion of gas passes through it, and, accordingly, heats it up.

Thus, hot water passes through the heat exchanger, which may contain various impurities in the form of metal salts and lime particles. These chemicals are constantly deposited on the inner walls of the pipes, forming a deposit.(Read about in this article).

Over time, this type of pollution only increases, as a result of which it becomes difficult for water to move through the heat exchanger, which leads to malfunctions of the entire boiler unit as a whole. Therefore, it is very important to flush the gas boiler regularly.

How often should the heat exchanger be cleaned

Many Internet sources on this topic indicate very contradictory information regarding the frequency of cleaning the heat exchanger. Some of them advise to adhere to the manufacturer's instructions, others rely on the opinions of experts.

They may be all right, but the most realistic option would be that the heat exchanger must be flushed when the following symptoms begin to appear:

• the burner in the gas boiler is on all the time;
• the circulation pump operates with a characteristic hum, which indicates overload;
• heating radiators heating takes much longer than usual;
• gas consumption has increased significantly with the same operation of the boiler unit;
• weak pressure of hot water in the tap (this feature is applicable for double-circuit boilers).

All these points strictly indicate that problems have appeared in the functioning of the heat exchanger, and this, in turn, means that it is necessary to start flushing.

Specialist's note: irregular cleaning of the appliance will reduce the efficiency of the gas boiler.

How to clean

Many ordinary people who decide to flush the heat exchanger with their own hands, as a rule, ask two questions. How do I clean this appliance? How to clean it? To begin with, we will tell you what chemicals are used to flush the heat exchanger.

Cleaning products

The modern market for household chemicals is very well saturated with all kinds of means for cleaning a gas boiler.

Therefore, you need to be very careful when choosing a substance for flushing. First of all, you need to consider the following factors:

• the degree of contamination of the heat exchanger;
• how the reagent will affect the material from which the heat exchanger is made.

At home, it is most advisable to use the following chemicals to flush this boiler element:

• citric acid, which is quite effective for removing scale;
• sulfamic and adipic acids are practical for regular flushing of the heat exchanger when the contamination is not so significant;
• hydrochloric acid is designed to remove sufficiently strong scale, but when using it, it is worth considering the properties of the heat exchanger material;
• gels that dissolve in water - they are not as aggressive as acidic reagents, but no less effective.

For flushing industrial equipment (boilers, heat exchangers, etc.), it is recommended to use special flushing agents and liquids. For example:

• Flushing fluid of the SP-OM series - can be used in any heat exchange equipment. Each brand of the SP-OM series is designed for operation in specific conditions and for the purification of specific metals. There are compositions adapted for use with different metals, incl. with non-metallic elements of equipment. Information on the application and manufacturer can be found at https://spomcom.ru/

Flushing methods

To clean this structural element of the boiler from scale with your own hands, it is optimal to use the following two methods:

• mechanical;
• chemical.