Gradual corrosion of metal on the inner surface of pipes and radiators in the heating circuit, crystallization of salts in the coolant, lead to clogging of the heating system and a decrease in its overall efficiency.

Regular flushing of the heating system with the removal of foreign particles from the heating circuit will help prevent this.

For normal functionality, nothing should interfere with the movement of the coolant through the channels built for it.

There are several symptoms that a large amount of debris has accumulated inside the heating circuit, and scale has settled on the walls of the pipes. There are no obvious visual signs of clogging of the heating system.

You can diagnose it by carefully monitoring the operation of the entire system and the appearance of a number of indirect signs:

• warming up the system takes longer than before (for autonomous heating systems);
• the operation of the boiler is accompanied by sounds uncharacteristic for it;
• increased consumption of gas or electricity;
  the temperature in different parts of the radiators varies significantly;
• radiators are noticeably cooler than supply pipes.

However, weak or uneven heating of the batteries is not always a sign of clogging. Perhaps they were airing. In such a situation, it is enough to reset the air lock through.

Without regular flushing of heating systems, overgrowth of pipes occurs, a decrease in their flow area, resulting in an increase in hydraulic resistance

In houses with a centralized heating system, flushing must be carried out by employees of the heating company. In a private house, this procedure is carried out by the owners or invited specialists.

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When dismantling the system for mechanical flushing and cleaning, it is more convenient to use a universal tool - a pipe wrench

The procedure for dismantling radiators from different materials is essentially the same. But in any case, you should prepare a container for draining the remaining coolant. To carry out the procedure itself, you will need keys of the appropriate size. To unify the process, it will be useful to have a pipe wrench in the arsenal - the “butt”.

Depending on which one, the dismantling procedure is also different. In any case, the radiator has an inlet and outlet for the coolant. In the process of dismantling, we release the union nuts connecting the radiators with pipes. On the first one or two turns of the nut, you must be prepared for the fact that the remaining water will begin to ooze from the connection. We collect it with a rag.

After the looseness of the untwisted joint " pipe-radiator» increases, we collect the flowing coolant into a container - a basin, a trough or something similar. At the same time, we carefully monitor that the coolant does not leak to the lower floor.

Flushing of heating devices can be carried out without dismantling the system. Cleaning is carried out with a hydraulic or pneumatic ram, exposure to chemical solvents or electrical impulses

After dismantling the radiator, we take it out either into the yard or into the bathroom. At the same time, we cover the plumbing from damage to the enamel coating with a dense cloth, which is then not a pity to throw it away. or baths must be covered with a mesh to prevent clogging of the siphon and sewerage.

Mechanical cleaning of the radiator can be done with a cable, similar to the one used to clean the sewer. We carry out the same procedure with pipelines. However, for a network with a large number of turns, mechanical flushing will be difficult.

After the cleaning of the batteries and pipelines is completed, we proceed to flush them with water. We wash the radiators in the same place in the bath or in the yard, directing a jet of water from a hose inward.

For flushing pipes, it is more convenient to use hoses with adapters. They allow hermetically docking hoses for supplying water to the heating circuit and for draining it into the sewer. Flushing the heating system with water is carried out until it becomes clean at the outlet.

Draining liquid from a heavy cast-iron radiator is best done by two people.

After flushing the radiators and pipes, you can repeat the mechanical cleaning procedure. To make the procedure more efficient, it is better to insert the cable in the direction opposite to the direction of movement of the coolant.

This is done so that the “flakes” that have settled in the direction of movement are torn off as a result of mechanical contact. If there is less dirt in the outflowing water than during the first round of cleaning, then the procedure is effective.

Method # 2 - hydrodynamic cleaning

When choosing this method of cleaning systems, the procedure will require special equipment. Water in this case is not supplied from a tap using a conventional hose, but from a high-pressure pump.

Sometimes, during hydrodynamic flushing, the pump is connected to the gap in the heating circuit as far as possible from the point of discharge of dirty water. But more often a special hose with a trailer is used for these purposes.

The design of the end nozzle has holes of small diameter. Through them, water under high pressure goes out.

It is the accentuated effect of water jets supplied under pressure that makes it possible to effectively deal with mud and salt deposits. The supply hose can be deliberately stopped at potentially problematic areas for more efficient flushing.

For the production of flushing the heating circuit in a hydrodynamic way, equipment is required that can create the necessary water pressure. The disadvantage of the method is that it helps to free the system only from water-soluble substances.

When selecting a hose for hydrodynamic flushing, it must be taken into account that with sufficient rigidity it is possible to apply pressure further from the inlet. True, at the bends of the pipes of the heating system, such a hose is problematic to move further.

Therefore, when carrying out hydrodynamic flushing using a hose, it will be necessary to sequentially open the heating circuit in several places to supply water to all points.

Method # 3 - chemical flushing of the system

Flushing can also be performed without mechanical intervention. For these purposes, there are either ready-made chemical compounds, or solutions that are easy to prepare handicraft. Dismantling of heating radiators is not required.

The figure shows sections of the pipeline before (left) and after (right) the application of a chemical solution to clean the heating system. The hydrochemical method of cleaning consists in the action of aqueous solutions of various solvents on the inner surface of the pipeline, instruments, fittings

The disadvantage of chemical flushing is the prohibition of the use of aluminum radiators for flushing and a large number of caustic solutions that require disposal in specially designated areas.

If the heating circuit is not very clogged, then for its preventive flushing it is quite possible to use:

• caustic soda;
• vinegar;
• available acids (phosphoric, orthophosphoric and others);
• whey and others.

But it is better to use specially designed formulations for these purposes. Their packaging will not only indicate the recommended use case (, nature of contamination, etc.), but also detailed instructions for use.

Orientation to the instructions will allow not only to use the composition as efficiently as possible, but also to clean the heating system at the lowest cost.

Some of us, no doubt, faced a rather unpleasant situation - after a few months after the start of the heating system, it becomes noticeable that its efficiency is declining. According to the information provided by the engineers, the efficiency of the heating system may decrease by 10% by the end of the heating season. However, it should be noted that these data refer only to those systems in which water acts as a heat carrier. The question is quite logical - how to avoid a decrease in efficiency and how to flush the heating system? This is quite simple - it is necessary to periodically carry out such an event as flushing heating systems.

Flushing the heating system of a private house

Where does pollution come from in the heating system?

The source of most of the problems that arise during the operation of the heating system is the coolant - water. First of all, when moving hot water through pipes. Sometimes a chemical reaction begins with the material of the inner surface of the system. As a result - there is a usual scum. Another problem is the poor quality of the water in the system. The result is plaque and sediment from organic compounds, as well as banal rust. All this makes it necessary to carry out such an event as flushing the heating system of a private house.

It is the presence of these substances in the system, as well as their further settling on the walls, that leads to a decrease in the quality of heat transfer, necessitating such a process as flushing the heating of residential buildings.

It should be noted that if plaque (scale) accumulates on the inner surface of the system with a layer whose thickness exceeds 8-9 mm, this leads to a decrease in the efficiency of the heating system by more than 40%.

It should be borne in mind that the presence of sediment on the walls significantly increases the wear rate of the system, thereby reducing its service life.

Is there any scale in the system?

Of course, by the appearance of the heating system, even relatively new, it cannot be said whether there is plaque on the inner surface, and whether the heating system of a private house needs to be cleaned. However, it's pretty easy to find out. You just need to observe the operation of the system and perform a few simple steps. The main signs of the occurrence of plaque on the inner surface and the need for such a process as cleaning the heating system are:

• longer system warm-up;
• during operation, extraneous noise is heard from the boiler, which was not there before;
• the radiator is partially cold (top is hot, bottom is not);
• the radiator is completely cold, while the pipe connected to it is hot;
• if the boiler is electric, there is a significant increase in electricity consumption.

In addition, plaque often occurs in the heating system after an additional element has been connected to it (provided that the system has functioned before).

Methods for dealing with the problem

Thanks to modern technology, several very effective ways have been developed to deal with scale that has arisen in the system:

• Water-pulsing mixture. Such flushing of the heating system of a building requires special equipment. Through it, the system is filled with a combination of compressed air and water. As a result of active pulsation, all contaminants are “washed away” from the internal walls of the system. This cleaning of heating pipes is good because it allows you to quickly and efficiently clean the system from rust, plaque and sediment. As a result, it increases the efficiency, service life and heat transfer of the system, and also significantly reduces fuel or electricity consumption.

• Biopreparations. Fairly fast and practical flushing heating. Its peculiarity is that there is no need to turn off the heating. The principle of operation is simple - a special biologically active liquid is added to the system for flushing the heating system, which, circulating along with water, literally dissolves all precipitation, rust and scale. This method allows for a fairly short period of time to completely clean the system of contamination. It should be noted that the liquid used to flush the heating system is environmentally friendly and does not harm the internal surface of the system.

• Pneumohydraulic shock. A very practical cleaning of heating systems, used even for fairly old heating systems in which cast-iron radiators are involved. This cleaning of heating systems requires the connection to the system of special equipment, through which short but active pneumohydrowaves are created. It is they that contribute to the very rapid delamination of any amount of pollution from the walls of the system. You should not be afraid that as a result of this type of cleaning, the system itself will suffer. The fact is that the main impact force falls precisely on the coolant flow (98%). But the walls receive only a slight blow with a force of only 2% of the wave power - and it does not pose any threat to the system. According to experts who use this kind of heating cleaning, it is very effective when cleaning the heating system, the length of which does not exceed 55-60 meters. The diameter of the pipe is 4 inches. Flushing the heating pipes by means of a pneumatic hydraulic shock takes very little time - 5-50 minutes, while all deposits in the system are completely removed.

• Chemicals. It should be noted that in systems with a rather complex layout, it is not always possible to remove contaminants from individual, most inaccessible places. And if there are any in your heating system, then the most practical and convenient way to descale is to use a special chemical solution. Consisting of several types of acids, chemical flushing of the heating system is able to remove all contaminants from the heating system that prevent its normal operation in a short time. However, this method should be used with some caution. Chemical flushing of the heating system can directly damage the internal walls of the system. Therefore, before using it, it is recommended to assess the overall condition of the system (meaning - check the level of wear of the material). It is also important to check the chemical composition of the deposits - this will allow you to choose the most effective acid compound, and the chemical cleaning of the heating system will be better.

The use of one or another method of cleaning the heating system largely depends on its condition, as well as on the degree of its contamination. In no case should you even try to think about how to clean the heating pipes yourself - almost all cleaning methods require special skills and knowledge. Therefore, to obtain the desired result, always invite a specialist who knows exactly how to clean heating pipes effectively. Then your heating system will last a really long time.

Cozy warmth in your home largely depends on the stable operation of the heating system. In this perspective, heating maintenance is a very important point.

One of the significant options for caring for a heating system is flushing pipelines and heating elements.

You may immediately have several reasonable questions:

Why flush the system?

Can this amount of work be done by hand?

What are the ways to flush the heating?

The purpose of this article will be detailed and exhaustive answers to the questions posed.

When flushing is needed

Cleaning the heating system will be needed if you notice the following signs during the heating operation:

The manifestation of at least one of these signs may indicate that the heating system is clogged.

Why pollution occurs

The problem of clogging of metal pipelines is rust. Accumulating inside the system, it prevents the free circulation of the coolant, and as a result, malfunctions appear in the work.

As for plastic pipes, they, of course, are not subject to rust, but, nevertheless, scale appears on their walls, which also contributes to malfunctions in the heating system.

One of the causes of pollution is also the quality of the water, which can contain various impurities that cause clogged pipes.

Thus, there are the following types of blockages:

• scale;
• rust;
• silty sand;
• trash.

How often to flush the heating system

Many people who take great care of their heating system are wondering how often to clean pipes.

There are two types of cleaning work:

1. The first flushing is carried out immediately after the installation of the heating system. This is due to the fact that during the heating equipment, various kinds of debris or oily contaminants could get inside the pipes. Therefore, the flushing procedure must be carried out until the water at the drain becomes absolutely clean.
2. Regular flushing in systems equipped with metal pipes is recommended to take place twice a year - before the start of the heating season and after it ends. For plastic pipelines, it is recommended to clean once a year - before the start of the heating season.

Knowing now the causes of pollution of heating systems, as well as the regularity of cleaning, the question involuntarily begs: is it possible to do the flushing yourself?

And we will give an affirmative answer to this: it is quite possible to do the cleaning of the heating system with your own hands. To do this, you just need to choose the best flushing option, which will be discussed later.

Washing methods

To date, it is customary to distinguish four technological methods for cleaning the heating system.

Chemical flush. This cleaning method allows you to remove 100% of system contaminants, with a minimum of effort. However, this cleaning method is only suitable for metal heating pipelines.

To perform chemical cleaning yourself, you must have the following tools and materials on hand:

• washing solution, which may include mineral or organic acids, as well as all kinds of solvents and alkalis;
• container for draining liquid;
• pump;
• hoses.

The procedure is carried out as follows:

• water is drained from the heating system;
• acid solution is poured;
• a special pump is connected to the system, which pumps the cleaning liquid throughout the heating circuit for several hours;
• the waste liquid is drained and clean water is pumped.

Important point: the used acid solution is strictly forbidden to drain into the sewer. If it is not possible to dispose of it yourself, then you can purchase special means of neutralization.

It is also worth remembering that it is not recommended to flush aluminum radiators with an acidic liquid, as irreparable damage can be done to them.

Hydrodynamic washing. This method of cleaning the heating system is carried out using special equipment, which includes thin hoses and special nozzles.

The principle of cleaning in this way is that water is supplied under pressure to a nozzle that generates thin jets of water. With the help of these jets, all grease, rust and scale are removed from the working area.

It should be noted that although this method of flushing pipes is quite effective, due to its high cost, it is used too little.

Pneumohydropulse flushing of the heating system. In order to perform this type of cleaning with your own hands, you will need:

The order of work consists of the following steps:

• water is drained from the system;
• a branch pipe is connected to the "return";
• the compressor is connected to the outlet, and we pump up the pressure to approximately 5 atmospheres. Strong pressure in the pipes leads to the fact that all kinds of pollution break off from the walls.
• we block the outlet pipe and disconnect the compressor, and connect the hose;
• we open the valve, and as a result, all contaminants come out under pressure.

It should be noted that for better cleaning, the pneumohydropulse procedure can be repeated several times.

You might also be interested in the features article.

Read an informative article about flushing a heating boiler from scale.

And in conclusion, I would like to note that having studied our recommendations, you can more confidently flush the heating system with your own hands.

Watch a video that popularly explains the need to flush the heating system and the features of the relevant work:

As you know, the efficiency of the heating system decreases even at the moment when it is put into operation. According to statistics, during the first few months, approximately 10% of heating and operation efficiency is lost.

Causes of clogging of the heating system

In the process of circulation of the coolant through the pipes, chemical processes occur. Sludge and corrosion of joints eventually lead to deposits in the form of scale. It settles on the internal surfaces of the system and reduces its performance. A massive layer of scale is well insulated and prevents heat transfer. Among other things, a layer of scale leads to wear of the elements. In order to exclude an emergency situation, it is necessary to try to prevent it in time, because it is especially unpleasant in the winter season.

Signs of scale on the inner surface of the pipes

Before you flush the heating system in a private house, you need to figure out what signs indicate the appearance of scale. If the batteries heat up unevenly, and their lower part remains cold, then this is the first sign of a thick layer of scale. You may also notice that it takes much longer to warm up the room than before. Scale can also be indicated by the characteristic crackling that occurs when the boiler equipment is heated. This is due to explosions of water vapor as they penetrate the scale layer. In this case, the power of the device is reduced.

If hot water is supplied to the pipe, then scale on the internal surfaces of the radiator may also be indicated by the fact that the latter remain cold. Costs are increasing, which cannot suit the consumer. To date, chemical and physical methods are known. Physical methods include hydropercussion and hydropulse washing, which involve special equipment - compressors. Chemical exposure involves the use of drugs with a biological or chemical component that can dissolve sludge and scale deposits.

Cleaning with water pulsating mixture

Before rinsing with water, you should become more familiar with what constitutes a water-pulsing mixture. This technology is based on the use of compressed air and water. Air is supplied to the heating system, the flows of which, together with the liquid, raise sand, salts, deposits, soot and corrosion. Subsequent air supply removes sludge from the system, preventing it from settling. It is possible to save energy resources thanks to pneumatic-hydropulse flushing, while extending the service life of all systems by 20 years or more.

Cleaning costs in this way amount to a maximum of 12% of the funds that would be spent on replacing system components without changes and improvements. This method cleans the networks without restrictions on the time of year, because the batteries do not need to be dismantled, as well as risers. As a result, heat transfer increases by a maximum of 95%. To flush the system in this way, it will be necessary to rent special equipment.

The use of biologics

If you decide to flush the heating system in a private house, then you can use biological products. This technology is environmentally friendly and highly efficient. It is based on the use of microbiological preparations that are introduced into the system. They break down oily-mud, solid organic deposits, and the process itself does not involve disassembling and shutting down the system.

Another positive point of this technique is the safety of cleaners for old systems. The drug is made on a water basis, and serves only to separate dirt from the walls. The result is a 100% clean down to the ground in just a few days.

The use of pneumo-hydraulic hammer

If you are thinking about the question of how to flush the heating system in a private house with a closed circuit, then you can consider the method of pneumatic-water hammer. It is applicable for old systems, and sometimes it is the only sure way to revive heat. The method is based on the action of a hydrowave, which propagates at a speed of 1200 m per second. This force breaks through scale and plugs from sludge, and the walls are not damaged. They are affected by a two percent force of the impact of the wave. While the remaining 98% affect the deposits that are discharged through a flexible hose into the sewer system.

The use of this method allows you to reduce the cost of repairing the building. Operating costs are reduced, and the need to replace pipes and batteries is eliminated. If you are thinking about what you can flush the system with, then you can consider this particular method, which for a limited time allows you to cope with pipeline contamination, the diameter of which is only 4 inches. With a length of 60 m, the system can be cleaned in a minimum of 5 minutes, a maximum of an hour, which is cheaper compared to a major overhaul.

Cleansing the system with citric acid

Before flushing the heating system in a private house with citric acid, you should become more familiar with this method. Some craftsmen claim that a solution of washing powder and citric acid must be added to the system. The resulting mixture is run for a day, then drained, and the system is washed with clean water.

Next, water is poured with the addition of Calgon or another water softener for washing machines. As an alternative solution, a method is sometimes used that involves the purchase of a ready-made composition for flushing heating systems. This mixture is dissolved in water and poured into the existing coolant. Rinsing is carried out according to the technology described above, the mixture is then drained, and then the water that has passed the water treatment station is poured.

Flushing radiators

If you are thinking about how to flush the heating system in a private house, then special attention should be paid to radiators. It is recommended to solve this problem before the start of the heat supply system.

In the store, you should buy flushing welded taps, but the best is considered to be a fixture that is assembled from a simple and battery plug. It is installed when the heating is running. It should be used to remove deposits like sand from batteries and piping to them. Before you flush the heating system in a private house with your own hands, you need to make sure that there is a hose with a fitting. However, it must be selected taking into account the diameter of the thread: it must correspond to this parameter on the flushing tap. A fitting is screwed into the flusher valve, and the free end of the hose is diverted into the sewer hole. The flushing hose must be opened and wait 15 minutes.

Conclusion

If you are faced with the question of how to flush the heating system in a private house, then you also need to take care of the gas boiler, which is most often used to heat houses for one owner. Prior to this, it is recommended to resort to a mechanical or chemical method, but it is advisable to entrust the prevention to specialists.

It is necessary separately from the system, therefore, during operation, it is disconnected and a temporary bypass is mounted. For annual maintenance, the normal water flushing method is recommended. At the same time, there will be little deposits on the walls, and if the circulation equipment is removed and the supply and drain hoses are connected to the outlets, then most of the sewage will be removed. If you are thinking about the question of how to flush the heating system in a private house, then the water should be supplied in the direction that is opposite to the flow of the coolant.

During the entire period of operation, contaminants accumulate in the pipes and radiators of the heating system. They adversely affect performance and can lead to serious problems. Therefore, the question arises before the owner - how and with what to flush the heating system of the house: radiators, batteries, pipes? After all, the quality of the work of the entire heat supply at home will depend on this.

Causes of clogged heating pipes

The composition of water includes many additional components. Iron, calcium and magnesium predominate the most. When exposed to relatively high temperatures, they are released in the form of small fractions, which are deposited on the inner surface of pipes and radiators.

Therefore, before washing aluminum radiators, you need to find out the nature of the pollution. In addition to calcium and magnesium deposits, oxide deposits can also form due to the natural rusting of metal heating components. Depending on the nature of the contamination, the optimal cleaning technology is selected.

Typically, the composition of the raid includes the following elements:

• iron oxides. In a system with steel piping and radiators, they can take up to 25% of the total plaque volume;
• Calcium and magnesium deposits - occupy up to 60%;
• Oxides of copper, sulfur and zinc - up to 15%.

Since the heating radiator in the apartment should be flushed only after a preliminary analysis of the nature of the pollution, it is recommended that you first take a plaque sample. To do this, you can dismantle part of the pipeline. In practice, this is not always done, especially for heating systems installed relatively recently.

The frequency of flushing the heating system depends on the composition of the coolant, the temperature regime of operation, as well as on the materials used to manufacture pipes and radiators.

Diagnostics of the heating system

How to flush an aluminum heating radiator and when should it be done? First of all, it is necessary to determine the expediency of carrying out the procedure for cleaning the system. It depends on several factors that can be identified independently.

The main sign of the relevance of solving the issue of how to flush the heating system in an apartment building is the uneven heat transfer of radiators. Those. in some areas the heating temperature is normal, while in others it is not. The relevance of flushing heating batteries can be determined by touch (which is not entirely correct) or with the help of a thermal imager and sharp thermometers.

Since it is possible to flush the heating system in a private house only after comparing its current indicators with the required ones, the pressure should be checked in various parts of the circuit. In places where pipes and radiators are clogged, the wire diameter decreases, which entails pressure surges. This is also one of the factors for mandatory cleaning.

What other external signs may indicate the presence of a blockage?

• Increased noise level. It is a consequence of a change in the volume of passage of hot water in various parts of the system;
• Frequent operation of the safety group - air vent and drain valve.

Having found out that it is necessary to flush the heating system in a private house, you should choose the right technology. It depends on the material of manufacture of pipes and radiators.

Regardless of the above signs, the heating system must be cleaned at least once every 5-6 seasons of operation.

Methods for flushing the heating system

Before flushing the heating system, you should choose the best way to clean pipes and radiators from blockages. One of the problems is the density of scale, which most often has a homogeneous structure located on the inner surface of heating appliances.

Therefore, before flushing the cast-iron heating radiator, this deposit should be destroyed by breaking it into separate components of small sizes. Then, with the help of a liquid flow, they are removed from the heating. This process becomes more complicated if the components of the heating network are made of different materials - metal, polymers. Traditional chemical cleaning can damage some of them. Therefore, it is advisable to choose a method of mechanical action on scale.

Hydrodynamic flushing of heating

This is one of the most time-consuming methods of removing contamination. Its essence lies in the impact of a shock wave of water on deposits. This requires special pumping equipment, nozzles and a hose for supplying fluid.

The hydrodynamic method can only be used for pipelines or radiators with a simple layout of water channels. How to flush heating pipes with a long length? The use of chemical compounds will not be economically beneficial due to the significant volume of the system. Therefore, in such cases, scale is removed mechanically.

This procedure is carried out according to the following scheme:

1. The coolant is removed from the lines.
2. Areas for flushing the heating system in an apartment building or cottage are determined.
3. The pipe section is dismantled and the hose with a nozzle is inserted into the line.
4. Water is supplied under pressure, which destroys scale.

After that, the system is filled with water and rinsed several times to remove scale residues. Before this, it is necessary to dismantle all internal filters. To prevent contamination particles from remaining in the system.

But how to flush heating batteries if their internal configuration has a complex shape? The above method is not effective in this case. Therefore, you need to choose another, alternative.

For heating with a short length of pipelines, the hydrodynamic method may be appropriate only if there are large solid deposits on the surface of pipes and radiators.

Chemical flushing of heating

The implementation of flushing heating radiators in an apartment is best done with the help of chemicals. They act on scale, destroying it and crushing it into separate components of small sizes.

To flush the heating system in a private house, you need to choose the right composition. Some of them can destroy aluminum or polymer pipes. Therefore, before purchasing, you should read the instructions from the manufacturer.

For self-cleaning of heating, you will need a pump and a container for liquid. These devices are connected to the main line with the help of branch pipes. This can be done both on a separate site, and on the entire system as a whole. For many chemicals, it is necessary to first dilute the composition with water. After completing the preparatory stage, the procedure for flushing the heating system in a private house is carried out according to the following scheme:

1. Draining the coolant from the network.
2. Filling the tank of the treatment plant with a prepared chemical composition.
3. Turn on the pump and fill the pipes and batteries with cleaning liquid.
4. It usually takes 2-3 hours of exposure to the composition for the destruction and dissolution of scale.
5. Reusable fluid circulation in the system. It is carried out until deposits are observed in the tank filter.

After flushing the aluminum heating radiator and pipes, the system is cleaned with water to remove chemicals. Then it is necessary to press the heating and check its tightness.

The cost of cleaning agents for aluminum heating batteries depends on the composition and manufacturer. For a small system, it is recommended to purchase a ready-made liquid, and for autonomous systems, a concentrate that must be diluted with water.

If there was antifreeze in the system, before chemical cleaning, you must first flush the pipes with water 2-3 times.

Pulsed pneumatic flushing of heating

With its help, you can rinse aluminum radiators without fear of destroying their surface. This is a relatively new method, which requires special equipment and experience in its operation.

The principle of cleaning radiators consists in a short-term impulse effect on the hydraulic medium - water. This creates a pressure of up to 12 atm, with a shock wave speed of about 1400 m/sec. This will be enough to flush the heating system, regardless of its configuration. This technique allows you to remove plaque in long lines without dismantling individual components.

However, before flushing the heating radiator, it is necessary to familiarize yourself with the features of pulsed hydraulic cleaning:

• The maximum pipe diameter is 4 inches;
• Blockage is effectively removed even at a distance of 60 meters from the installation of a shock ram;
• Practically does not affect the integrity of the heating installation units - fittings, threaded and welded joints.

To flush a cast-iron heating radiator in an apartment building, it is necessary to first block the flow of coolant in this section of the main. This can be done without the permission of the management company if there is a bypass in the battery piping. Then a hydraulic ram is installed in one of the nozzles and several cleaning cycles are performed.

Timely flushing of the heating radiator will increase its heat transfer by 20-25%. Those. actually restore this figure to the normalized factory.

Self-cleaning heating

Is it possible to flush the heating pipes with your own hands? To do this, you need to conduct a preliminary analysis of the degree of contamination of the highway. Most of the scale is formed in the zone of maximum thermal impact - in pipelines located closest to the boiler. This is where aluminum radiators most often need to be cleaned.

If the system has not been cleaned for 15-20 years, it is recommended to dismantle the radiators, as well as the boiler heat exchanger. In this way, you can most effectively flush the heating system in a private house. To do this, you do not need to remove the pipes - it is enough to temporarily dismantle the batteries.

Then you should choose equipment for washing the heating system. Since this procedure is rarely performed (once every 5-6 years), it is best to rent a pumping station. During the cleaning process, contaminated water will need to be drained. Use an airtight container for temporary storage. This is true when flushing cast-iron radiators, in which scale accumulates most during operation.

The tank is then filled with the already diluted cleaning liquid concentrate. The pump nozzles are connected to the battery, and several circulations of the cleaner are performed. They continue until there are no scale components in the filter. A similar scheme for flushing heating in a private house is carried out in the summer - during this period there is no coolant in the system.