🛠 Flushing the heating system: signs of the need for and the basic ways

That during the heating season in the house was always warm and cozy, the equipment must function correctly. Timely made by flushing the heating system will avoid many problems. We offer to find out why the clogged pipe in service, how to bring them back to their original state, and the entire amount of work done by hand.

The causes of littering

Most often, the cause of the obstruction that could disrupt or degrade the performance of the thermal circuit is heat transfer agent. Especially if the latter is used as tap water. Together with her in the heating system often ends up debris that is present in the water. Moving along with the water, it accumulates inside the radiator, thereby causing the need to wash the heating system as a whole.

Also, the source of contamination is the scale formed upon contact with the heated coolant heat exchanger walls. The longer operated equipment, the thicker the scale layer was formed having a sufficiently low thermal conductivity. This significantly reduces the efficiency of the heat exchanger, which begins to transfer energy to the coolant worse. Being exposed to cyclic heating and cooling, the scum breaks down and together with the coolant begins to move through the heating elements, gradually settling on internal surfaces of pipes.

Sami tube during the operation start to corrode due to the presence of oxygen in the coolant. Rust together with scum, settling on internal surfaces and becoming a source of contamination of pipes, the flow resistance increases. Often the cause of the blockage is debris accidentally left inside the new battery at the time of installation.

Signs of poor condition of the heating system

In some cases, heating the washing should be carried out as soon as possible. This is evidenced by the following symptoms:

• increase in the amount of fuel consumed to reach a certain temperature inside the room;
• a significant difference in the degree of heat pipes and radiators, via which the transport of coolant through the system;
• uneven heating radiators. As a rule, the upper part of the heat than the lower;
• all elements of the system is heated much longer than it was originally;
• occurrence of abnormal noise when operating the boiler.

Types flushing heating

Existing technologies flushing a heating system can be divided into:

• chemical. To dissolve formations present within the conduit used chemical reagents added directly to the coolant. This is a different alkali and acid;
• mechanical. It is quite old, but effective way. In this case, either the water lends itself under considerable pressure in the pipe or the system understands, and existing deposits are removed manually.

These technologies are implemented in different ways. We offer to find out in more detail in the characteristics of each of the possible ways.

mechanical

This method eliminates the need for special equipment. However, disassembly involves heating circuit. It allows you to effectively remove accumulated dirt, but ill cope with the scale deposits.

Operating principle

When mechanical cleaning of internal surfaces of the heating elements, various brushes and Yorshik. Exerting a mechanical action, it becomes possible to completely remove the dirt which has accumulated inside the pipes and radiators.

Order of works

If it is decided to take advantage of mechanically washing operation is performed in the following sequence:

• overlap valves before and after the heating equipment;
• the heating system is drained through the drain cock coolant. If one is not provided, spun the cap from the radiator, which is located below all;
• if necessary, dismantle the battery. Do this with a suitable size keys. Enough to release captive nuts connecting radiator with trumpets;
• the battery was transferred into the bath or out and laid on the laid pre dense textiles. If this is not done, there is a risk of mechanical damage to the radiator. In carrying out the washing in the bathroom, the sink should be put on a special grid to prevent clogging sewage;
• via cable or narrow brushes and cleans the radiator tubes. The precipitated mud is collected in a separate container to reduce the load on the sewer;
• precleaned elements of the system stream is washed with water. To ensure sufficient tightness of the joint places using different adapters. Washing produce up until the water is completely clear.

hydrochemical

This method is widely used for flushing the heating system private and apartment buildings. It involves the use of special chemicals. Characterized by efficiency and accessibility. It can cope with calcium salts and rust.

Operating principle

For washing hydrochemical heating elements selected in view of the chemical formulation of the material from which the main elements. If the composition is supplied in powder or liquid form, it is first diluted to the desired consistency. The prepared mixture was added into the heating circuit, where it comes into contact with deposits gradually destroying them.

Attention! Work can be performed at any time of the year, including during the heating season.

Order of works

Washing HYDROCHEMICAL heating system operates in the following sequence:

Illustration	Description of the action
	Inside the heating system via pump is filled with a chemical solution. Preferably, the use of special formulations. If the heating circuit is not pressed, as a chemical reagent vinegar may be used, caustic soda, milk whey, orthophosphoric acid or phosphoric
	After waiting the required time, the liquid is lowered. Shut-off valve must be open. The dwell time depends on the particular composition. It is important to observe the recommended interval. If given enough time, will, deposits are not destroyed. When exceeding the duration of exposure will begin to break down the inner surface of pipes and radiators
	Flush the system several times, ensuring transparency of effluent
	The heating circuit is filled with distilled water. Performed its crimping

hydrodynamic

Use this method only if you have special equipment. For supplying water into the system uses a special high pressure pump. Due to impact, it becomes possible to clean the inner surface of the accumulated contaminants soluble in water.

Operating principle

Hydrodynamic effects method involves supplying water under significant pressure. Striking the inner surface of the heating element circuit, a jet of water supplied at high pressure, knocks and dirt accumulated salt deposits.

If necessary, a pump connected in the heating circuit gap. This makes it possible to have an impact on the most problematic place, achieving maximum efficiency. To combat the deposits using suitable diameter end cap with small holes through which the water is fed out under high pressure.

Order of works

To perform washing using hydrodynamic hoses of suitable diameter and rigidity. The latter factor determines how deep the hose can be pushed into the system. If you choose a hard hose, certain difficulties may arise when rotating the pipe. Submission of the heating system is carried out under high pressure, which is created by the pump.

Hydro

One of the most effective and safe way. It can cope with deposits formed without the use of reagents. The method is relevant for heating systems which were in operation 40-50 years.

Operating principle

The method consists in the supply of air into the heating circuit at high pressure. compressor is used to create the required pressure. As a result, turbulent flows are formed, possessing high kinetic energy. Because of this, come off the accumulated layers and wash off all the dirt from the inner surface.

To achieve the greatest efficiency of feed turbulent flows are not continuously and periods. For pneumopistol pulse shaping is used. The compressor is connected through a check valve to prevent accidental ingress of water into the heating circuit. Air flow through the radiator or through the entrance site, wherein the plug is installed.

Order of works

Flushing the heating system hydropneumatic operation method performed in the following sequence:

Illustration	Description of the action
	Of the heating circuit merge coolant. Since last unscrew the radiator cap. Since the edge remove accumulated dirt. Via an adapter connect the hose to clear debris
	Connecting the air hose so that air is supplied in a direction opposite to the movement of the coolant
	Clear the dirt in the toilet. To perform retransmission procedure hoses for pressurizing and discharging dirt are interchanged. After completion of the work the cap is put in place

Hydropneumatic washing may be performed with disassembly of radiators. In this case, the batteries are dismantled and taken out to the outside. After cleaning the radiators back to its original location.

electro-hydraulic pulse

The method allows achieving high quality cleaning. The use of physical processes can get rid of all types of pollution. Implement this method of washing is possible only with a special equipment.

Operating principle

The principle of operation is based on the use of electrical pulses. Due to such effects manage to get rid of the salts deposited on the internal walls of the pipelines. Effectively fighting the accumulated dirt, you can not be afraid of the negative impact on the pipe material.

Order of works

Electrical impulses generates a special apparatus. To this is connected the coaxial cable for forming discharge at the opposite side. As a result of such an impact shock wave effectively combats the resulting scum. Followed by washing with clean water allows you to fully get rid of the existing within the system of foreign particles.

Do I need a preventive flushing of heating systems: important points

Resort to washing system should only be serious if there is reason to. If a heating quality no complaints, it is necessary to abandon the analysis of the heating circuit and pouring it into the chemicals.

Flush the heating system it is necessary at a substantial reduction in the amount of heat produced. Preferably, the use of mechanical or hydromechanical methods.

Share in the comments, if you had to personally perform the flushing of the heating system. What method you choose to use?