The reason for cleaning the system is the low quality of the supplied coolant. According to the regulations, it must be prepared before being entered into the system. Water treatment softens, but, unfortunately, does not completely remove potassium impurities, sandy and silty deposits from the water. During heating, they precipitate and stick to the walls of pipes and radiators. This leads to consequences such as:

• decrease in heat transfer performance. A layer of pollution absorbs a certain amount of heat, which affects the operation of the system - it warms up the room worse, in some places it remains cold. To heat the room, you have to increase the heating temperature, which affects fuel consumption. Untimely flushing of gas boilers as a result leads to an increase in the amounts in consumer accounts. This factor is especially important for those who use the autonomous heating system of a private house;
• poor water circulation. The layer of deposits resists the pressure of the coolant. As a result, water may not flow into some nodes of the system at all, while it may pass through others with minimal pressure. This affects the quality of heating;
• failure. The system may not warm up individual nodes due to the inability to deliver coolant to them. A breakthrough is possible in cases where the pressure on the pipes at the point of blockage is too high, and they themselves are already worn out. The cost of repairing the system is much higher than flushing it.

Prices for heating flushing services

No. p / p	Name of works	Note	Price, rub.)
	Departure of a specialist, full diagnostics
	Flushing the primary heat exchanger wall boiler
	Flushing the secondary heat exchanger of a wall-mounted boiler
	Flushing the heat exchanger floor boiler	40 to 60 kW
	Flushing the floor boiler heat exchanger	60 to 80 kW
	Flushing the boiler coil
	Flushing the underfloor heating circuit
	Flushing the heating system
	Flushing the heating radiator
	Filling the system with antifreeze, balancing, venting
	Disposal of antifreeze from the system
	Waste disposal system

Washing and cleaning of boiler equipment, radiators, heat exchangers and all heating systems.

Complex of works on washing and cleaning pipeline system, heating and heat exchange equipment, hot water, cold water and central heating.

Frequency and methods of flushing the heating system at home

In the Russian Federation, there are no by-laws that would oblige heating systems to be flushed within a strictly set time frame. European manufacturers it is advised to do the following:

• hydraulic flushing - once a year;
• pneumohydraulic - once every four years;
• chemical - once every 5-6 years.

Of course, these actions are dictated ideal conditions and are performed with a similar frequency in cases where the system has good equipment for water treatment. The frequency of flushing depends primarily on the quality of water in a particular region. The types of cleaning are selected based on the level of contamination of the system.

Hydraulic flushing of home heating pipes involves the use of a special pump. This is the simplest method that requires a minimum of time and money. The method is based on the fact that a liquid (without any impurities) is supplied to the system under high pressure. This allows you to remove scale, which is formed in one or two years of operation of the equipment.

Pneumohydraulic flushing of pipes and heating radiators will remove more serious deposits. The principle of operation is simple - water with air is supplied to the system. The mixture has high density and eliminates the scale formed over several years of operation. Water with air and contaminants is discharged through the drain points. For best result in some cases, the operation is repeated. After the work is completed, the system is filled and restarted.

Chemical washing - the most difficult process, which requires certain knowledge from employees. The principle of cleaning is that water mixed with chemical elements in a certain proportion. They dissolve all deposits and allow you to extend the life of the equipment by 10-15 years. Some manufacturers do not advise chemical flushing of heat exchangers more than once every 4–5 years. This is due to the fact that the substances are aggressive to the materials of the system themselves. Note that modern chemical compositions are calculated in such a way as to have the maximum effect on deposits, while not damaging the walls of pipes and radiators.

Reading time ≈ 9 minutes

The heating system is an important component of every home.

This design includes not only pipelines, but also batteries. The heat supply of the entire room will depend on the state in which they are located. But in order to wash it, you should learn about all the features of such a procedure and determine how such washing should be done.

The main causes of pipe pollution

By heating pipes water is coming. And as you know, water contains many components that can affect the metal. The water composition contains the most calcium, iron, magnesium. When the water is heated, they are released in small quantities, deposited inside the pipes and other parts of the system from the inside.
Oxide deposits are also often formed, which is the result of the rusting processes of metal elements. Therefore, it is important to determine what kind of pollution has occurred and, starting from this, use certain technologies for cleaning.

Dirt can accumulate for years

Most often, the raid has the following composition:

• iron oxides - up to 25% of the total plaque (if we talk about steel pipelines);
• deposits of magnesium and calcium - 50-60%;
• oxides of sulfur, zinc and copper - no more than 15%.

As you can see, plaque can have quite different composition. Therefore, it is recommended to take a sample before flushing and then determine how to produce it. This will not only save your strength, but also give you the maximum result.

In order to take a raid on a sample, the pipeline should be partially disassembled. But according to statistics, this stage is often skipped. Especially if the heating system was installed not so long ago.

Important: How often the system should be flushed directly depends on what composition of the coolant is used, on operating temperature, the material of the pipe itself and the battery.

Features of diagnosing the heating system at home

Many are concerned about the question, when should I do a flush? Initially, the feasibility of such an action should be determined. Several factors point to this. They are easy to determine at home on their own.

The first indicator of the need for a system is recognized as uneven heating and, consequently, heat transfer from the batteries. In other words, the battery will be hot in some places, and cold or warm in others. It is very easy to determine this - touch the radiator. But it is more correct to use a thermal imager or a point thermometer.

Radiator heat dissipation

In a private house, it is required to compare the current indicators with those declared in the characteristics. To do this, you need to measure the pressure in different zones of the circuit. Where the pipe is clogged, there will be a smaller wire diameter. As a result, pressure drops appear. This phenomenon requires flushing heating system.

Possible external indicators that indicate a blockage in the pipes

If you hear a lot of noise, then this indicates a blockage inside the pipes. Noises arise due to the fact that the volume of hot water passage in different zones of the heating system changes.

Also, the need for flushing is indicated by the fairly frequent operation of security groups. These include an air vent and a bleed valve.

When you are sure that you cannot do without flushing, then it's time to pick up optimal technology and learn how to flush the heating system in a private house with your own hands with the greatest efficiency.

Pollution can be colossal

Methods for self-flushing the heating system

To heating season did not bring unpleasant surprises, choose the most suitable method for cleaning pipes from contamination. The problem remains the density of scale. It most often has the same structure, which is located inside the heaters.

Therefore, if the house has a cast iron radiator that should be flushed, then the first step is to divide this plaque into separate components, which will be small. And after that, use fluid pressure to remove the blockage from the pipe.

The presence of combined system heating, which consists of materials different type– metal, polymers and so on. If you choose standard chemical cleaning, then pipes may be damaged due to aggressiveness. So in this case it is worth applying a mechanical effect on the scale.

You can clean the scale yourself

Hydrodynamic method of cleaning the heating system

This method is the most time-consuming in terms of purification from pollution. The essence of the method is the use of a shock water wave, which is directed and acts on the accumulated blockage.

Such flushing of the system involves the use of specialized equipment, including:

• pumping system;
• professional nozzle;
• a special hose through which liquid is supplied.

Equipment for hydrodynamic washing pipes

The hydrodynamic cleaning method is only suitable for batteries or pipelines that have a simple circuit placement of water channels. When there are pipes with significant lengths, then the use of chemical methods becomes economically unprofitable due to the significant volumes of the system.

Flushing is carried out step by step

Chemical method of cleaning the heating system of a private house

For apartment building it is best to use chemicals to clean the heating system. They are able to break scale into small elements. But to use chemical method in a private house, you should carefully choose the chemical composition of the reagents. After all, some can negatively affect pipes made of aluminum and polymers. So before buying, consult with a specialist or carefully read the manufacturer's instructions.

Chemical reagents for flushing pipes

Here, too, some equipment should be used to achieve efficiency. You need to stock up on a pump and a container in which there will be liquid. The equipment must be connected to the main line using pipes for this. The connection can be in a certain area or on the entire heating system in general.

Most often, the purchased chemical reagent must be diluted with water (the proportions are indicated in the instructions). When all preparations are completed, you should proceed to direct washing according to this scheme.

Price for chemical solutions, which are designed to flush the heating system with aluminum batteries and pipes, directly depends on chemical composition and manufacturer. If the heating system is small, then it is better to buy a liquid that is ready for use. In case there is autonomous system, then it is better to take a concentrate that needs to be diluted with water.
Important: When using antifreeze in the system, before cleaning, chemicals flush the system at least 2-3 times with plain water.

Little flush secrets

Since the cleaning of the system, according to the recommendations of specialists, should take place every 5-6 years, you do not need to buy special equipment. It is enough to rent it for the time of use. This will significantly save you money, and will not take up space in the pantry.

If you need to flush a system that has been without cleaning for about 20 years, then experts recommend dismantling all radiators and a boiler heat exchanger. Thanks to this, cleaning the heating system in a private house will be as efficient as possible. The pipes do not need to be removed.

Removing the radiator for flushing

Take care of the containers that will be used to drain and store fluid from the network. Especially if you have cast iron pipelines. Most of all, various kinds of pollution are formed there.

The heating system plays an important role in every home, especially in private homes. Your comfort and health in the cold season depends on its functioning. But with any operation, pollution cannot be avoided. So knowing how to flush the heating system in a private house by doing it yourself is not only interesting, but also useful. To learn about all the secrets and nuances of self-flushing the heating system, watch the video with practical tips.

At the heart of any water heating system are pipes and water. And over time, the pipes rust, the scales of rust fall off, and the pressure of the water carries them through the system until they are held up by some pipe bend or joint. And even if the pipes are plastic and not subject to corrosion, then the water itself, when heated, forms limescale on the surface of the pipes and sediment. And if the heating often boils and you have to constantly add water, then this accelerates the process of sediment formation even more. Another source of pipe clogging is microorganisms and their metabolic products, which can develop in the heating system during the inter-heating period. As a result of their vital activity, a black sediment may appear at the bottom of the system, which is also a source of blockage.

But whatever the source of clogging of the heating system, the result of this is always the same -

Later some time the pipes are clogged,

Their throughput is reduced and then even the water pump is not able to pump water through the heating system. Not to mention the thermosiphon system operated without a water pump. And then not only do the batteries remain cold or almost cold, but also the boiler begins to overheat, which can disable it.

Some owners practice annual blockage prevention. by changing the water. Those. drain the old, dirty, rusty water and pour fresh instead. There is logic in this - with old water, some of the scale and rust leaves the heating system. However, there is back side medals. The fact is that iron and oxygen are necessary for the formation of rust. When these two components interact, rust is formed. And if there is always iron in the pipes - these are the pipes themselves, then oxygen is supplied with water. In water that has been poured into the heating system for a long time, there is very little oxygen left and the process of rust formation is greatly slowed down. But if the old water is drained from the system and fresh water is poured in, then the system will receive an additional influx of oxygen and the rust formation process will begin with full force. So it turns out that by replacing the water, we will remove a little old rust from the system, but we will speed up the process of forming a new one.

So how do you deal with clogged heating systems?
If desired, you can a priori get rid of the occurrence of blockages. To do this, it is necessary to fill the heating system not with tap water, but with a special antifreeze for heating systems. It acts exactly like an automobile one - provides good thermal conductivity, creates protection metal parts against oxidation and rust, and prevents the formation of limescale and other types of sediment. This option is the most expensive, but it allows you to forget about the maintenance and cleaning of the heating system.

cleaning
The easiest way to clean the heating system is chemical cleaning (chemical flushing). To do this, you need to purchase a product that can dissolve rust and lime scale. As such a remedy, you can use ordinary citric acid from grocery store. Several glasses citric acid(the more, the better) is dissolved in water and poured into the heating system. After that, the boiler is turned on, the temperature is set more and left for a day. Then we drain the water with the deposits dissolved in it. Loading into the system clean water and drain again to get rid of chemical residues and sediments.

You can also use vinegar for this purpose. But to get at least some effect, you need a lot of vinegar. A more reliable result is obtained when using hydrochloric acid (10 or 20 percent). It cleans the system well, but you should be careful with it so that the strong concentration of acid does not damage the pipes.
Well, it’s best to use special flushing agents for this purpose, designed for flushing heating systems, such as inhibited hydrochloric acid. They are based on all the same acids and additional additives that enhance the flushing properties and, moreover, protect the pipes.

But such chemical cleaning helps only with weak blockages. If the heating system is clogged more seriously, then chemical pressure flushing will save. For this, a water pump is used, which is connected to the heating system and provides increased circulation of water with chemicals. But a conventional pump is not suitable for this purpose, because. aggressive chemistry, which he will have to pump, will render him unusable.
You can also resort to hydropneumatic cleaning. For this, a compressor is used, which is connected to the heating system, and flushing with water is combined with pneumatic shocks, which make it possible to get rid of all deposits and sediments even better. To remove precipitation, the "return" is disconnected, i.e. a pipe that enters the boiler from below, and through it dirty water. At the same time, fresh water is constantly supplied to the riser.
If such equipment could not be found, or if its use did not help in solving the problem, in this case, the dismantling of each boiler will help. Because it also accumulates plaque and deposits. Moreover, even in even greater quantities than in other pipes, because. it heats up to higher temperatures.
To clean the boiler, it is disconnected from the heating pipes. Further cleaning is carried out by the method chemical washing. Those. the boiler is connected to a pump and water is passed through it, with the corresponding chemistry dissolved in it (inhibited hydrochloric acid, etc.). After that, the boiler is washed clean water and connected back to the heating system.

For correct and effective work your heating system needs to be checked from time to time preventive work such as inspection, repair, maintenance and flushing of the system. After all, if water is used as a coolant in the pipes, then scale, rust and clogging occur in them over time. As a result, the water circulates poorly, which leads to heat loss. It has been verified that a heating system that has not been flushed for a long time loses 10% in efficiency. Therefore, flushing should be a regular procedure. Do-it-yourself flushing of the heating system is possible. Let's see how to perform it.

Why flushing is needed

First of all, flushing is needed in order to remove various debris and rust that accumulate in radiators and pipes during operation. As a result, it turns out that the heating system does not function at 100%. You pay money for heat, but you do not receive it in full. Moreover, we all know that when water is heated, scale forms, especially if the water is contaminated. You can verify this by looking at your teapot. If you have not cleaned it for a long time, then at the bottom you can see a layer of scale. The same happens with pipes and radiators. Due to scale, the pipe cross section can be halved, which reduces the permeability of water in the system and its heat transfer (this applies to metal pipes).

It is clear that to determine appearance whether your system needs to be flushed or not is not possible. But you just need to observe how the system functions and take some actions. So, you can find out whether pipes and radiators need to be flushed or not by the following signs:

• The system takes longer to warm up than usual.
• When the boiler is running, extraneous noises are heard that were not observed before.
• The radiator warms up partially: it is warm on top, but not on the bottom, or the last fins are cold.
• The radiator is absolutely cold, and the supply pipe is hot.
• Behind recent times the consumption of thermal energy increased, you began to pay more for gas.

All these signs will help you decide on flushing pipes and radiators. This will improve the performance of your heating system.

If the radiator warms up partially, this is not always a sign of system clogging. Maybe he's just overwhelmed. In this case, you need to release air from the radiator, using Mayevsky's taps.

Getting Started

When you are convinced that you really need to flush, you can start doing it yourself. Such a procedure cannot be called simple, so you will have to make some efforts and spend a lot of time. First you need to perform a hydraulic flush.

First of all, you need to turn off the water supply and drain it from the heating system. If you live in a high-rise building, you will have to go to the basement. Since it may be closed, make sure you have access to it in advance. If you are a resident of a private house, this procedure is easier to perform. Now disconnect the radiators from the pipes and remove them. It is difficult to do this on your own, of course, if you are not Hercules, since cast-iron radiators are quite heavy. So ask for help. If the connection cannot be untwisted, the coupling must be heated.

After dismantling the battery, it can be pre-cleaned mechanically. It is inconvenient to perform further work in an apartment or house, since they involve the use of a large amount of water. Put the radiator upside down, covering the hole that is on the bottom. Then, using a hose, fill the battery with water. Next, the water must be released through the hole from below, opening it. If the water literally "flew" out of the hole and carried debris and scale with it, you did everything right. The whole process must be repeated until the water that comes out of the battery is clean.

As hot water moved along the radiator in one direction, the scale that she left formed in the form of scales. By turning the radiator over, you run the water in the opposite direction, which helps the water to better remove all the scale. If this method is ineffective in your case, and contamination still remains, consider other cleaning options. They will help to cope with various contaminants and clean not only radiators, but also pipes.

Without removing batteries

To date, there are a lot of types of flushing the heating system. You can use each of them. Consider 5 various technologies cleaning the heating system:

1. Chemical flush.
2. Disperse washing.
3. Electrohydropulse washing.
4. Pneumohydropulse washing.

Chemical washing consists in the use of special chemically active substances. It can be whey, caustic soda, vinegar, phosphoric, orthophosphoric and other acids, special formulations bought in the store. The specifics of flushing the system depends on the choice of means. If you use a special composition, instructions for work are written on the package. This sequence was developed by manufacturers, so it must be followed. If you use "improvised" reagents, you need to pour them into the system and turn on the pump for 15 minutes every 4 hours. The procedure must be carried out for several days, after which the coolant is drained and the system is flushed several times. Dry cleaning is quite risky and is used for ferrous metals.

Disperse washing is more gentle. A special reagent is introduced into the system, which acts exclusively on scale and debris, without interacting with the metal. Such flushing can be done for both metal and plastic pipes. The technology is quite simple and similar to chemical technology: a circulation pump is connected to the system, a reagent is introduced, which circulates through pipes and radiators, after which it is removed.

After such flushing, the pipes are cleaned, and a protective hydrophobic film is formed on their walls - the “effect plastic pipe”, thanks to which salts do not settle on the surface.

Hydropneumatic flushing consists in breaking up the contamination with the help of a special flushing unit. It delivers fine jets of water and compressed air into the system at high pressure, which flush out rust, scale and other deposits.

Pneumohydropulse washing can be performed using a special impulse device or a pneumatic gun. The system is affected by multiple pulses that remove impurities. Thus, spot cleaning of water pipes and radiators is ensured. Used for Ø 150 mm, no more.

Electrohydropulse cleaning is also performed using a special unit. The cleaning process consists in the fact that an electrical impulse is applied to the heating system pipe through a coaxial cable. After that, an electric discharge is formed at the end of the cable, forming a powerful shock wave that acts on the scale, destroying it.

With such microexplosions, the pipes are not damaged or deformed. The main blow falls on pollution. At the end of cleaning, all debris must be washed out of the system with running water.

Doing such cleaning of the heating system is not just possible, but necessary! Such activities should be carried out regularly. Thanks to this, you can significantly increase the permeability of water and heat transfer, which will save you money. The key is to be careful and follow the rules. And to reduce the formation of scale in the pipes, you can install a special filter in front of the boiler, which will purify the water circulating in the system.

Video

How to carry out hydropneumatic flushing, see below:

Often there are situations when, after a few months successful work the heating system becomes less efficient. Experts say that the efficiency of the heating system by the end of the season may decrease by 10%. Naturally, it is necessary to deal with the problem. But what causes it? In most cases, the reason for the deterioration of heating is the pollution of the heating system, which is eliminated only by flushing.

Do I need to flush the heating system?

Hot water circulating through pipes rarely differs high quality, containing an impressive amount of various impurities. Reacting with metal, the coolant causes rust, but often the pipes become clogged with sediment from various organic compounds. It is the appearance of plaque that causes a decrease in the efficiency of heat transfer, which makes flushing the system a mandatory step in proper operation.

Most of all, horizontal sections of the heating network suffer from silting, where the coolant passes quite slowly. The problem of sludge is often encountered in the presence of cast iron batteries, which differ in impressive dimensions of sections. If the inside of the pipe is made of steel without an anti-corrosion coating, then another problem appears - mineral deposits. However, heating networks made of any metal need periodic flushing.

How can I flush the heating system of a private house?

Heating networks in private houses are polluted with microparticles that remain in the boiler, pipes and radiators after passing through the coolant. Gradually accumulating, debris clogs the elements of the heating system, disrupting the circulation of water. If you do not take active action, home heating will become much less effective. There are several ways to flush the heating system that will help eliminate different kinds pollution and deposits.

How to flush the heating system in a private house with a pneumatic hammer?

This cleaning option is suitable for homes with fairly old heating systems that use cast iron radiators. The method is effective and practical, but requires the use of special equipment. Using hydropneumatic devices, craftsmen create short, but strong enough waves, which remove contaminants from the walls of pipes and radiators.

This method is not dangerous for the system itself, since the impact falls on the water flow. If the length of the heating network does not exceed 55-60 meters, then hydropneumatic flushing will become optimal solution with 4" pipes. The process itself is carried out as soon as possible - after a maximum of 50 minutes, the system will be completely cleaned and ready for further operation.

How to flush the house heating system with chemicals?

If the heating network differs sufficiently complex design, then the problem arises with the removal of contaminants from hard-to-reach areas. In this case, experts recommend using special chemicals that will help you quickly and permanently get rid of various deposits.

Such washing is carried out with the help of acids that can quickly cope with pollution. But this method can be dangerous for the heating system itself, since the active substances react with the metal, sometimes leading to damage to the pipe walls. Before use chemical cleaning it is desirable to objectively evaluate the state of the heating network and analyze the existing deposits.

How to flush an individual heating system with a water-pulsing mixture?

This type of cleaning also requires the use of special equipment, with the help of which the heating network is filled with a combination compressed air and water. The resulting pulsation contributes quick removal various pollution. This method makes it possible to quickly and effectively clean pipes from rust, plaque and sediment. The efficiency of the heating system increases, as does its service life, and the consumption of fuel and electricity decreases.

How to flush the heating system yourself?

Experts do not recommend starting to clean the heating network on their own, as this can adversely affect the condition of the entire system. Yes, and the quality of flushing without the use special means and equipment will not be too high. However, if there are no other options, then you can try to improve heat transfer on your own.

To flush the primary circuit, you must perform the following sequence of actions:

1. Open the water pressure valve that feeds the firebox.
2. Open the valve supplying the reserve tank.
3. Open the control and circulation jumper.
4. Open the valve that passes the coolant to the batteries.
5. Open distribution valve.
6. Open the return valve.

Then we close the last valve so that the coolant can pass through the downpipe. When cleaning is completed and all valves are closed, you can start working on the remaining circuits.

What water flushes the heating system?

The first step is to clean up the system using cold water, which will remove various solid particles. To do this, all cranes should be located in the maximum open position for 2 hours. Then the water heated in the boiler is used, which dissolves the oils and partially copes with rust. To increase the efficiency of the hot wash, you can add a little bleach, enhancing the cleaning properties of the water. Such processing should be carried out not only during the operation of the system, but also immediately after its installation.

It is advisable to carry out water washing on your own once a year. It is not recommended to drain the coolant from the system during downtime, since the existing contaminants will harden and can only be removed with the help of professional cleaning.