Method for flushing internal heating systems - technical documentation - general library - file catalog - city of specialists in the field of engineering systems. Flushing the heating system

Everyone, sooner or later, faces the problem of interruptions in work. heating systems. The reason, most often, is that deposits, dirt, silt and scale accumulate in radiators and pipes and water cannot move freely through the system. This problem is absolutely solvable, and at home. There are various methods. However, let's take a closer look at the most common ones.

If you notice that it is getting colder in your house, this may be the first signal that you need to flush the heating system. This can be easily checked without resorting to the help of a specialist - just touch the batteries. If it is heated unevenly, or part of it is generally cold, flush. There are several more beacons that it is time to clean the pipes: uncharacteristic noise in the batteries, when the heating is started, the system warms up for a very long time.

Most often, horizontal parts of the pipe are exposed to the main pollution. According to the standard arrangement of radiators in the house, this is usually small areas and it won't be too hard to clean them.

If the battery heats unevenly, then it is dirty.

The primary source of problems in heating systems is hot water, the main coolant.

1. Firstly, hot water, interacting with the materials from which the system is made, can provoke chemical reaction. Consequences - scale.
2. Secondly, the properties of water themselves. It can contain a great many different impurities, which can provoke not only banal corrosion, but also contribute to precipitation and plaque on pipes.

It is the occurrence of deposits from all of the above that can lead to the quality of the operation of the heat elements of the system.

An interesting fact is that even a layer of deposits is only seven to nine millimeters, the efficiency of the heating system drops by more than 42%.

And, of course, all this affects the life of the heating elements in general, they quickly become unusable.

Types of flushing heating systems

Chemical flushing of heating

This method is based on the dissolution of various substances deposited on pipes in chemical compounds. This is one of the most effective, used and proven ways to clean the heating system from excess.

Chemicals liquefy all components of deposits, scale, which are then naturally washed out of the heating system. As a rule, the composition of such substances includes an element that protects pipes from the appearance of signs of rust, and extends the period of operation.

In order to clean the pipes in this way, you must have special equipment.

Usually, specialists use pumps in such cases. It is needed so that after injecting a chemical solution into heating devices, the pump gives direction to its movement through the system. The time spent on cleaning depends on each material in the heating system, the strength of the dirt and the selected substance. In addition, the process of enveloping pipes from the inside with an oxide film also has its own time frame.

This method has several significant advantages:

• Firstly, this is the cheapest and most proven method of cleaning the heating system;
• Secondly, the speed of manifestation of results, it is very high;
• Thirdly, flushing can be carried out without stopping the heating, which allows it to be used at different times of the year.

The disadvantages of the method are that, first and foremost, it cannot be used for flushing aluminum pipes(since this can destroy their integrity), second, like any chemical, the solution is toxic.

Sequence of actions when using this method flushing the heating system

1. First, try to consider the existing heating system in as much detail as possible in order to select the right chemical solution.
2. Pay attention to the instructions for the composition. Means can have a different consistency and it is necessary to dilute the chemical as it is written in the recommendations for it.
3. Connect the pump to the system, having previously filled the tank intended for this with the composition.
4. Make sure the chemical is circulating in the system. We repeat that the time depends on the strength and composition of the pollution.
5. Remove the chemical from the system, flush it with water and refill.

Dispersed flushing heating

Let's call this method the "second" generation of chemical. Its action is as follows: chemical composition does not react with metal and only affects the polluting composition (silt, dirt, scale) and its interaction with the heating system. A pump is also needed.

The advantages of this method can be called:

1. Firstly, this method is suitable for any heating system, no matter what material it is made of, and for any time of the year.
2. Secondly, the reagents are non-toxic.
3. Thirdly, as in the case of the first method, all pollutants are already removed at the stage of decomposition and cannot re-form the blockage. And, of course, in the future, our heating system will be protected during further operation.

Instruction:

1. Determine required amount solution selected specifically for your heating system.
2. Connect the pump to the system by filling the appropriate container with the reagent.
3. After cleaning, flush the system, dispose of the composition.
4. If you are cleaning heating period, then it is necessary to connect a device that will close the heating system.

This method is based on descaling by supplying water under high pressure through certain nozzles. This is an environmentally friendly method, which, by the way, copes well with pollution on cast iron. Due to the properties of this metal, the chemical method may not be very effective. However, it is relatively more expensive (since you need special equipment capable of delivering a jet of water under pressure of several hundred atmospheres) and high-quality cleaning will not come out without the help of third parties. The fact is that before you start cleaning, you need to treat the dirt with a solution that can soften them.

Pneumopulse method of flushing the heating system

This method is based on generating small explosions. air bubbles, which are able to tear off pollution from the inside. For this, the following are used: an air gun, a switch, equipment for supplying air with an accumulation system (for example, a compressor), adapter (connecting) hoses.

How does the installation work?

First, the air gun is connected to the heating pipes through a hose and a switch, then comes the compressed air transmitter. Further, a liquid is passed through this entire system, which sets the piston in motion and, in fact, starts the installation.

If you decide to use a compressor to supply air, then when water is introduced and the piston position changes under its pressure, the empty container begins to fill with air. After the cylinder is full, part of the air will move into the piston, which, directing it into the heating system, will create a shock wave.

In order to completely clean the system, you need from two to five strokes. The process itself will take several minutes, and is completely independent of electricity - the installation works autonomously.

Of the minuses this method you can call it a limited range, due to the characteristics of the gun.

The easiest way to implement, and which will not require any investment other than labor.

This is the usual mechanical cleaning, which is possible in any apartment, house.

Instruction:

1. First of all, it is necessary to disconnect the radiator from the system and drain all the liquid from it. Be sure to cover all surfaces with unnecessary rags so as not to spoil or damage the coating. If you have a special tap on the batteries, this will greatly facilitate the task. In the event that the house is cast iron batteries, it may be necessary to remove them a heating element(to make it easier to unwind the connection).
2. Next, the radiator must be flushed. The easiest way to do this is in the bathroom, directing water from the shower hose at maximum pressure into the pipes. You need to do this for as long as it will run rusty water. If there is too large and noticeable layer of deposits inside the pipes, use a metal fixture. As soon as the pollution stops washing out of the battery, the cleaning is completed.
3. We wash the pipes in the same way, cleaning individual segments.
4. Be sure to clean the threads from corrosion before assembling the system.

Buying Tips

• Please note that aluminum bimetal radiators, convectors have a relatively small volume, in which the circulation rate of the coolant does not allow sediment to be released.
• choose closed systems. Since in such systems the volume of water does not change, the volume of pollution that appears new remains the same.
• Connect batteries from below. As already mentioned, deposits accumulate on horizontal lines, which means that the bulk will leave with the flow of the coolant.
• Install a dirt filter. This is a relatively cheap fixture that will make cleaning easier for you. It is much easier to remove scale from one part than to clean the entire riser.

Video - how to clean a heating radiator with your own hands

Flushing of the system is necessary after repair, installation, as well as after completion of heating season to remove sludge and dirt.
The most effective is hydropneumatic method flushing - bubbling water with compressed air to create a rapid movement of the medium in the system.
To exclude the possibility of contamination of an already washed area, washing is carried out in this sequence.
For flushing heating systems, the following fittings must be cut into the inlet (see Appendix 1):
for connecting the compressed air pipeline from the compressor DN 32mm (18),
for pipeline connection cold water DN 50mm (19),
for drainage of drained water DN 50mm (20).
To ensure the possibility of removing large contaminants from pipes, the diameter of the drain pipes should be taken from the following ratios:

Pipe length, mm up to 70 80-125 150-175
D branch pipe, mm 25 40 50

Discharge of flushing water if present drainage device in the chamber it is carried out directly into the drainage, and in the absence of drainage into the nearest storm drain or into the chamber, from where it is pumped out by pumps.
When flushing heating networks, mobile compressor stations such as VKS-1, AK-B, DK-9, with a capacity of 5-6 m3 / min, pressure up to 6 atm, or another type of diesel compressor can be used.
Depending on the bandwidth drainage device, compressor power and possible expense water, several flushing modes are used.
The normal flushing regime is considered to be the movement of the mixture, accompanied by shocks, slips alternately of water and air.
When inlet compressed air into the washed area, it is necessary to ensure that water cannot enter the compressor receiver, for which the valve on the water supply system should open only after the pressure in the receiver becomes greater than the water supply pressure.
Assuming the reduced rate of movement of the flushing water equal to 1 m/s, the approximate water consumption during flushing for various pipe diameters will be:

Pipe diameter, mm 50 70 80 100 125 150 200
Water consumption, m3/h 8 14 20 30 50 65 125

pressure tap water is selected in the range from 1.5-3.0 atm. With a pressure of more than 3.5 atm, stressful operating conditions of the compressor are created, under which it cannot provide a normal flushing of the network.
With a pressure of 1 atm compressed air from the compressor can block the access of water to the pipeline and at the end of the section there will be an exit of one air. In this case, you should alternate the operation of the compressor with its stops for 10-15 minutes with a continuous supply of water.
Keep the air pressure in the flushed pipeline at 3-3.5 atm.

In addition, it is necessary to comply with the requirements for the placement and placement of input nodes in accordance with SNIP ||-33-75, and each input node must contain (see Fig. 1.):
- water jet elevator (16),
- installed calculated narrowing device (nozzle) (17),
- mud collectors on the supply and return lines (14.15)
- four valves (1,2,3,4)
- inserts for pressure gauges (5,6,7,8,9)
- inserts for thermometers (10,11,12,13).

If there are no tie-ins for flushing the internal heating system and, as a result, no flushing is carried out, the consumer will not be connected during the heating season, as it clogs the heat distribution networks.
And also the absence of tie-ins for pressure gauges and thermometers does not make it possible to carry out commissioning work, consequently, consumer claims for unsatisfactory heat supply will not be accepted and all responsibility lies with the Housing Office.

Heavily polluted heating systems, long time not subjected to washing, washed in three stages.
First stage.
Flushing with compressed air of each riser from the bottom up with the heating system filled with water (to loosen deposits), starting from the most distant riser.
Second phase.
Flushing each riser with an air-water mixture.
Third stage.
Flushing of distributing pipelines with water-air mixture.

With annual flushing, you can limit yourself to flushing risers in groups (up to 5 risers).

The procedure for flushing internal heating systems
hydropneumatic method.

1. ZhEK agrees with the regional branch of the enterprise the schedule for flushing.
2. By the specified time, a representative of the enterprise (master of the thermal district) is invited and, in his presence, the housing office starts flushing work.
3. For the period of flushing, the heating system is disconnected from the quarterly network with valves 1, 2, 3, 4, and if they are not dense enough, additional plugs (blinds) are installed from sheet steel with a thickness of at least 3 mm.
By the beginning of the heating season, all four valves must be inspected.
4. Attach flexible hoses (rubber hoses) to the flushing fittings using half nuts according to GOST 2217-76 (half nuts "ROT"). It is mandatory to provide for cold water and air inlets check valves.
5. Flushing is carried out after the nozzle is removed from the elevator.

The system is filled with water through the valve 19 with the valve 21 of the air collector open and the valves (valves) 22.24 open and the valves (valves) 1,2,3,4,18,20,23 closed. After the appearance of water in the tap 21, the tap and valve 19 are closed.
Produce air purge of each riser.
To do this, close all the taps 24 on the risers. Open valve 18 (air). By successively opening the valve 22 on the risers, the risers are blown with air from the bottom up.
To drain water into the sewer, fitting 20 is put on a flexible rubber hose to throw the mixture into the storm drain.
Rinse each riser, starting with the most remote.
To do this, the valve 22.24 is opened sequentially on the risers with the air vent 21 open. The valves 19 (water) and 18 (air) are opened.
Then for flushing:
sequentially fill the risers with water;
close the taps 21, 23;
open the water drainage through the valve 20.
Turn on the air through the valve 18 and with the valves 19, 20 open, the risers are turned on in series by opening the valves 24 (gates), starting from the most remote riser.
In systems with lower wiring heating circuits, flushing is similar. The system is filled with water through the valves 19, 24 (valve), 22 with the tap 21 open.
Then each riser is purged with air, starting with the last one. With constant flushing, discharge from the riser can be done through valve 23a.
To drain the water-air mixture from several risers, the mixture is discharged through drainage 20 into the storm drain (see Fig. 2).
The calculation nozzle is installed.
Filling the system network water, is carried out in the presence of a representative of the enterprise.

The heating system in a residential building must be reliable and of high quality, since it provides heating of the room in cold weather. However, over time, pipes and radiators begin to clog, rust, and this can adversely affect the heating of the room.

Therefore, it is necessary to flush and clean the entire heating system in time. Before flushing yourself, you need to study all the rules and features of this procedure.

What is flushing the heating system

Flushing the heating system is a set of works that is aimed at removing deposits in the pipes. Water usually circulates in radiators, and it makes vicious circle. Due to the fact that the water does not change for a long time, calcium and magnesium salts begin to form in it, and even silt appears. From year to year deposits increase and are deposited on the walls.

Due to this, the cross section of the pipes decreases, and the heat conductivity deteriorates. Also this leads to high costs energy. In order to maintain a good level of heat in clogged batteries, it is necessary to increase the temperature of the water heating in the boilers.

If the pipes are not cleaned of scale in time, the following problems may occur:

1. Deterioration of pipe strength.
2. Reduced heat transfer from radiators.
3. Increasing the cost of public utilities. As the build-up on the pipes increases, the level of energy consumption increases.
4. Reducing the temperature of the heating system, due to the high thermal resistance.
5. Decrease in speed and pressure in the system.
6. Increases the likelihood of pipe rupture. The rupture can lead to flooding of the room with hot and dirty water. Also, water can get on the furniture and significantly spoil it.

When flushing is required

There are certain reasons that will make it clear whether flushing the heating system is necessary. These include the following symptoms:

1. Reduced heating.
2. The time for heating pipes to the required temperature increases.
3. Uneven heating of radiators. Cold below, warm above.
4. Complete lack of heating. There are times when the pipeline itself is hot and the radiator is cold.
5. Increase monthly payments for heating services.

Ways

Usually washing is done in the following ways:

1. Water pulsating mixture. This washing method is carried out using pulsating water and compressed air. Due to this, deposits, rust, plaque, silt, sand are removed in the pipes. This flushing method reduces energy costs and increases the service life of the heating system elements. However, special equipment must be used to carry out this flushing.
2. Biopreparations. The use of biological products during flushing ensures deep penetration into clogged places and complete dissolution of all deposits. When washing with biological products, it is not necessary to turn off the entire heating system. As biological products, super cleaners are mainly used, which are made on water based. The principle of action of these preparations is based on the loosening of scale, oil-mud, solid-crystalline, corrosive and organic deposits.
3. Pneumohydraulic shock. During washing in this way, special equipment is used. This method is very convenient because you do not need to disassemble the battery components. There is also no need to use special cables and chemicals. With the help of equipment, a pneumohydraulic impulse is supplied to the system. The main blow falls on the main coolant column with deposits. Due to this, deposits are quickly destroyed and dissolved. The efficiency of this method is very high. In addition, ruptures and cracks in pipes are excluded.
4. Chemicals. This purification method is based on the use of preparations containing organic and inorganic acids. Preparations, getting into the pipe, completely dissolve scale, rust, deposits in the form of salts.

Necessary equipment

To clean the radiators very often uses special equipment. It should be comfortable and provide excellent cleaning from various deposits. In this regard, one can single out the following types equipment:

1. Cleansing chemicals

Chemical cleaning is the use of special chemicals that are injected into the pipes.

Often chemical treatment produced using the following equipment:

1. A container for dilution of a chemical preparation.
2. Pump.
3. Hose for inlet and outlet of the solution into the pipe.
4. TEN, but it is not present on all models.

The main advantages of this equipment:

1. Easy to use.
2. Deep penetration into inaccessible places.
3. Complete dissolution of all deposits, scale, rust.

2. Device for dissolving blockages - Romantic 20

This equipment allows you to carry out high-quality washing. This device is mainly used for heating batteries, the volume of which is about 300 liters.

Advantages of the device:

1. Dissolves large layers of scale.
2. Automatic adjustment of reverses.
3. High performance. It can reach up to 40 liters per minute.

3. Ropulse

This equipment can be used both for flushing heating batteries and for cleaning water supply systems. In addition, this device is very often used to clean floor heating systems and to clean silt and deposits in solar collectors.

This installation very effectively eliminates all salt deposits, rust, scale, and various blockages in pipes.

4. Rocal

This is a small compressor that is used to clean salt deposits, scale, rust in steel and copper heating pipes. This device is used for heating batteries, the volume of which is 300 liters.

He also has very high level performance. It reaches 40 liters per minute.

5. CILLIT-BOY cleaning station

This equipment has electronic control so it's very easy to work with. The unit is used for washing radiators, for cleaning water supply systems and for floor heating systems.

The principle of operation of the station is high hydropneumatic purification. The plant supplies compressed air and water to the pipes. Due to this, internal vibrations pass through the entire heating system, and they also reach the heating boiler and completely clear it of various blockages. This cleaning extends the life of the radiators and also increases the heat levels.

How to flush the heating system

Before washing, prepare necessary materials and tools for the job. Since special equipment for cleaning pipes is quite expensive, and their use requires certain knowledge, cheaper material can be purchased.

For self-washing, you will need next material and tool:

1. Container for draining fluid from pipes.
2. Rags, old rags.
3. Keys.
4. Gas-burner.
5. Kerosene lamp.
6. Hose for the diameter of the hole in the pipes.
7. Iron brush.

After all the material is prepared, you can start washing the battery.

Step-by-step instruction

1. To begin with, from the heating battery, you need to remove all unnecessary items that interfere with flushing the entire system. If there are curtains near it, then they must be carefully removed. Also, laminate or parquet is often laid on the floor, and during operation it can be damaged or spoiled. Therefore, it is advisable to lay unnecessary material or film under the battery.
2. Shutting off the water supply to the batteries. Batteries usually have shut-off valves, then with the help of it you can block the water. However, they do not always have this element, so the overlap of water will be a little more difficult. It is necessary to drain all fluid from the heating system. The merging process is in the following way- unscrew the radiator from the heating system and drain all the water from it into a prepared bucket.

Flushing of heating radiators

1. Beginning of cleansing. The radiator needs to be taken to the bathroom and rinsed clean water. Since it can cause damage and scratches to the bathroom, it is advisable to place a wooden board. If washing is carried out in a private house, then for cleaning, the radiator is best taken out into the yard.
2. Unscrewing the end caps with a wrench. This procedure should be performed in the bathroom or outdoors in the yard. Due to the fact that unscrewing the end caps causes the discharge of dirty liquid from the battery, and it can flood the floor and adjacent furniture. This will cause problems and damage furniture and flooring.
3. Radiator flushing. Rinsing is done with a hose or shower. The hose is inserted into the hole in the pipe and water is supplied under pressure.

Flushing the heating systems of an apartment building

Flushing heating systems in apartment buildings can be done by the following methods:

1. Washing with chemical solutions

This purification method consists in supplying special chemical reagents in the form of alkalis to the system.

Then, through a special pumping equipment, continuous circulation of liquid is produced for several hours. After that, the solution is completely drained and the system is pressure tested.

2. Hydropneumatic flushing

This flushing method is very often used when cleaning heating systems in apartment buildings. The effectiveness of flushing depends on a properly performed cleaning job.

Algorithm of actions during hydropneumatic flushing:

1. Closing the valve in the return pipeline.
2. Connection of the compressor to the metering valve on the supply after the house valve.
3. After the pressure in the ballast tank of the compressor reaches the level of 6 kgf/cm2, it is necessary to open the valve to which the compressor is connected.
4. Then you need to block the risers. It is very important that no more than ten risers be open during the overlap. This will ensure the efficiency of flushing all risers and radiators connected to them.

Duration - this wash can be determined independently- if the liquid in the riser becomes transparent, then you can start flushing the next pipe.

At the last stage of cleaning, you need to correctly switch the heating to reset in the opposite direction:

1. To begin with, the discharge and the valve are closed.
2. Then, at the feed, the house valve closes; at the processing, it opens.
3. In the end, a reset opens from the filing. The compressor must be connected to a measuring valve on the return line. After that, you need to open the compressor.

Price

Each washing method has different prices. For example, the cost of hydropneumatic flushing lies in the amount of work.

Calculation of the cost of hydropneumatic flushing depends on the following:

1. The length of the pipes, the flow of air and water are calculated. Then the price of the scope of work is determined.
2. A work schedule is being drawn up.
3. The conclusion of the contract.
4. delivery necessary equipment, preparatory work.
5. Pressing and cleaning.
6. Drawing up an act of work performed and issuing a guarantee.

Average prices for work carried out during hydropneumatic cleaning:

1. Flushing the heating system - from 3000 rubles.
2. Hydropneumatic cleaning of radiators and convectors - from 800 rubles.
3. Hydropneumatic flushing of the heat exchanger - 2000 rubles.
4. Hydropneumatic cleaning using chemical reagent heat exchanger type ALFALAVAL - 5500 rubles.
5. Flushing the heating system for 100 sq.m - 2000 rubles.
6. Hydropneumatic cleaning with the use of a chemical reagent of the building contour - on the basis of a locally estimated account.

The cost of chemical cleaning is much less. Price chemical agent is about 5-6 thousand rubles for 25 liters. Also plus the cost of work. On average, flushing will be 8-10 thousand rubles.

However, despite low cost, chemical washing has disadvantages:

1. Alkalis can corrode battery composition.
2. Chemical solutions cannot be used for aluminum radiators.
3. After applying such solutions, cracks and leaks may occur in the batteries.

Conclusion

The heating system performs important functions, due to it the room is heated in cold weather. However, in any heating system, deposits and scale are formed, which prevent normal operation pipes and radiators.

Therefore, it is better to clean the batteries from deposits in advance than to completely change the entire heating system later. Quality flush will keep pipes and radiators in good condition for a long time.

How is the heating system flushed?

Before and after washing

In order for the water heating system to work perfectly, it is necessary not only to operate it correctly, but to periodically carry out preventive examination and repair, which includes maintenance and flushing of the heating system. Specialists are constantly faced with these processes, it was for them that the procedure for carrying out and the list of works that are used in the prevention of the system were developed.

For many, it may seem that this instruction should only apply to systems central heating. This document is valid for all types of systems without determining the power, size and number of equipment and devices. Therefore, it makes sense to familiarize yourself with the basic rules of how to flush.

The procedure for carrying out work on flushing heating

Firstly, there is a need to inspect the entire system and its individual parts. To do this, the butt joints of pipes, pipes with radiators, pipes with a boiler and a boiler, as well as pipes and instrumentation and automation are visually viewed. Joints are checked for water leakage. If any are found, then they must be repaired or replaced with new ones.

Secondly, before the start of the heating season, a test run of the system is carried out, during which the air accumulated inside the pipes and appliances is removed from it. For this, special air valves are used. Currently, experts recommend the installation of automatic air valves, which independently release air without human intervention until water flows out of the valve, after which the valve closes.

Thirdly, if the system has circulation pump, then it must be inspected, lubricated and turned on for testing.

Now you can start the process of flushing the heating. This is a serious operation, where you will have to accurately use the staging of the implementation.

1. The water supply valve is closed, the electricity is turned off.
2. Through the drain valve, which is installed on the boiler, water is drained into the sewer.
3. To speed up the draining process, it is necessary to open the air valves on the heating radiators. Not all, but only those who are located above the rest. For example, on the second floor of the house.
4. The water supply valve is opened, flushing is carried out until the water coming out of the drain valve is clear.
5. Filling the system that starts with the boiler. For better operation of the heating system, it is necessary to add corrosion inhibitors to the water. To do this, the uppermost air valve is opened, through which inhibitors are added.
6. Completeness of filling must be controlled by the level of water inside the safety tank. She should fill the tank only halfway. During operation, the water will heat up and expand in volume, which will lead to its pouring out of the system. Half the volume of the tank will be sufficient to prevent this trouble from occurring.

As you can see, the technology is quite simple, and you can safely do it yourself. But this is the easiest way that does not require the presence of special equipment, so it is not the most effective.

Types of flushing

Apparatus for flushing heating

There are two types of system flush:

The first is applied only if all elements of the system are contaminated with silt deposits. The second is used if scale or corrosion build-up has formed. But, as practice shows, chemical cleaning heating systems are more in demand today than the first option. The whole point is that in autonomous systems most often used tap water, which does not shine with quality. Hence the scale, and corrosion of metals, and silt deposits, which can only be handled by chemical reagents.

Using any type of flushing, it is necessary to use special equipment, usually compressors. The movement of water during flushing must correspond to the circulation of the coolant inside the system. This is very important point. But sometimes, this applies only to the pneumohydraulic method, it becomes necessary to counterflow water during washing. What for? In places where pipelines branch off, pockets are formed from the swirling of the liquid, where silt deposits accumulate. And they often cannot be removed by direct flow. That's why you have to install the compressor in the opposite direction.

If the house is large, then you need to flush each circuit separately. And be sure to follow the flushing scheme, which has its own sequence:

1. Flushing radiators.
2. Pipes supplying heated water to radiators.
3. Pipes that drain cooled water.

How to flush radiators?

This process is not complicated, but requires certain information. The easiest is to rinse the batteries with water with the addition of caustic or soda ash. Both of them are on sale today. To do this, disconnect the batteries from the pipes of the heating system and remove them from the brackets.

After that, be sure to plug one hole from the pipe, and pour water mixed with soda into the second. Fill up to the brim. After that, the hole is also muffled. In this state, the radiator is left for an hour and a half, then you need to shake it, moving from side to side, you can knock on its sections with a mallet. Then the water is drained into a container, it will still come in handy for the next radiator. And finishing touch- this is flushing with clean water, you can use a compressor, this is the best option.

Flushing radiators can also be done with a special liquid that is used to clean car radiators. But in this case, this liquid can be filled in only for ten to fifteen minutes, after which the battery is well washed with clean water. By the way, the liquid must be diluted only with hot water.

Modern chemical cleaning companies also offer radiator flushing products. Not many of them can boast of excellent cleaning properties, but there are decent specimens.

Conclusion

Cleaned from silt, scale and corrosion, the elements of the heating system are subjected to less stress. The passage of water is greatly facilitated, the heat transfer of the radiators increases, the pump runs without load. This leads to big savings fuel and in the form of electricity for the pump, and in the form of fuel for heating the coolant. And this is a clear savings. Money. So two tips:

1. Flush as often as possible.
2. Use purified and filtered water in the heating system. In this case, flushing the system can be carried out not once a year, but once every several years.

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