Reasons and ways to eliminate poor heating of radiators and radiators, as well as the entire system

Why are the batteries in the apartment not warming up well?

Reason 1: air locks

Often the batteries in the apartment are cold or not warm enough due to air congestion. As a rule, such a problem is relevant for residents of the upper floors, since the air tends upward through the pipes. In order to eliminate air congestion, a Mayevsky crane is used. It allows you to release the collected air and ensure full circulation of the coolant in the pipes.

Reason 2: suboptimal connection of heating batteries

The first sign of improper connection is uneven heating of the battery. The radiator will not heat up strongly enough if the water supply is from the bottom. It is best in this case to change the connection diagram from side or bottom to diagonal.

Reason 3: a large number of radiator sections

Uneven and weak heating of the radiator may be the result of too many sections. It is best to avoid installing the battery in more than 12 sections.

Reason 4: low coolant temperature

Sometimes the batteries remain cold in winter due to the low temperature of the coolant (water) itself. In this case, you must contact the house management.

Why do the batteries in a private house not warm up well?

Just as in the case of a high-rise building, there may be several reasons for the poor performance of heating batteries in a private house.

Reason 1: problems in the hydraulics of the heating system

The most common reason batteries stay cold is due to the hydraulics in the heating system. In this case, one of the heating branches is working properly, and the other is intermittent. This is typical for a new heating system or when adding radiators to an existing one. If the hydraulics are incorrectly calculated, and in particular the diameters and lengths of the pipes, some of the batteries may simply not heat up. The hydraulics can be adjusted using special cranes.

Reason 2: one-pipe heating system

Many private houses have one-pipe heating systems. In such a system, batteries that are often remote from the boiler heat up much worse than those close to them. This does not mean that there are problems, this is a feature of the operation of a one-pipe system. The only solution here may be only to replace the system with a two-pipe one.

Reason 3: boiler malfunction

The batteries may not warm up due to malfunctions in the operation of boilers with built-in automation, pumps and sensors, which is a typical problem for autonomous heating systems. In this case, it is necessary to contact directly a specialist working with such equipment.

Causes of problems with the return in the batteries of a private or apartment building

There are several reasons why the return line is not warm enough or completely cold. Common problems are:

• insufficient water pressure in the system;
• small section of the pipe through which the coolant passes;
• improper installation;
• airiness or contamination of the system.

If a problem with a cold return flow has arisen in an apartment, then the first thing you should pay attention to is the pressure. This is especially true for rooms on the upper floors.

The fact is that the principle of operation of the return flow is to quickly and continuously run the fluid through the system. And if its speed drops, then the coolant will not have time to push out cold water and the batteries will not heat up.

Another reason for the malfunction of the return is contamination of the heating circuit. As a rule, major cleaning of systems in multi-storey buildings is not often carried out.Sediment that builds up over time on the pipe walls impedes the passage of the liquid.

The main reason for interruptions in the operation of the heating system in a private house is improper installation. Most often this happens when the installation is carried out without the participation of specialists. Being incompetent in this matter, it is quite easy to confuse the supply and return pipes or choose the pipes of the wrong size.

Both in an apartment and in a private house, the problem of a malfunctioning heating system may be associated with an insufficient water supply rate or airiness. In a similar way, the contamination of the pipes affects the operation of the return.

Troubleshooting methods. Why is cleaning necessary?

To understand how exactly to solve the problem, you first need to establish its source. If the batteries become cold due to insufficient rapid circulation of water, the installation of a special pump will help in this case. It will regularly push water into the circuit under a certain pressure, thereby preventing the system from stopping or slowing down.

Photo 2. Marking of the Grundfos circulation pump allows you to choose the most suitable one and install it correctly.

If the reason is the clogged pipes, then they just need to be cleaned. This can be done in several ways:

• using a water-pulsating mixture;
• with the help of biological products;
• by means of a pneumohydraulic impact.

Important! Such cleaning is carried out regularly in order to prevent the emergence of new problems. In the event of a malfunction due to improper installation of the equipment, contact the wizard

A qualified specialist will certainly figure out the problem and fix all the problems. In addition, he will give practical advice and recommendations for the maintenance and operation of the system.

In the event of a malfunction due to improper installation of the equipment, contact the wizard. A qualified specialist will certainly figure out the problem and fix all the problems. In addition, he will give practical advice and recommendations on the care and operation of the system.

It is interesting: Heating scheme of a one-story house with forced circulation (open, closed system) (video)

What if the bottom of the battery is colder than the top?

If the battery is hot at the top and cold at the bottom, then it is not functioning properly. In this case, diagnostics is required not only by the battery itself, but also by the entire heating system. The cause of the problem may lie in recent work on the heating system and changing the radiator. As a rule, the problem "hot top - cold bottom" appears due to the occurrence of an air lock (99% of cases), clogging of the radiator valve (a consequence of improper system start-up).

This problem is solved in two ways. You can remove the airlock using a Mayevsky crane or a descender. First of all, shut off the coolant supply to the radiator and leave the return line open. Open the drain, wait for air to escape, close the drain and open the coolant supply. This is usually enough.

In the event that this method did not work, and we are talking about an apartment building, it is better to call a specialist. There is another option for private houses. First you need to turn off the heating supply, open the drain at the highest point of the system and squeeze out all the air with back pressure.

Each heating system can have its own characteristics, and therefore the likelihood of atypical problems is high. These include improperly selected pipe diameters, incorrect distribution of the coolant, poor flow capacity, lack of pressure, malfunctions in the circulation pump or expansion tank. In any case, only a specialist can fully understand all the nuances, therefore, in case of difficulties in solving a problem, it is better to seek help.

Why is the last battery from the boiler cold?

Good afternoon, after switching from the stove to the gas (main gas, Navien boiler) heating method in a private house, it was decided to replace the stove with a radiator battery (aluminum). Due to its relatively high location (30 cm) and the fact that historically the levels of the location of the batteries in the ring in the house create a slope for the water flow, only the top heats up in this battery (venting through Mayevsky's tap helps insignificantly). How is it easier to start the last (in terms of distance from the boiler) battery?

And good day to you! Unfortunately, in order to assess your situation and give a specific answer, you did not provide sufficient information. We do not know what kind of heating system you have (one- or two-pipe), nor where the horizontal lines are located (bottom or top), nor in any way the boiler is connected. Without seeing the diagram, one can only guess about the reasons that prevent the normal heating of one of the batteries, there may be several of them. Let's list the most likely ones:

• Let's assume that your heating system is installed in a one-pipe system. As a rule, single-pipe looped systems have large-diameter pipelines, the movement of the coolant occurs under the influence of the gravitational-temperature factor, by gravity. In a properly assembled one-pipe system, a pump is not needed. With insufficient pipe diameters, a local narrowing of the section, an excessive number of sharp turns and large jumps in height in the mains, the absence of "accelerating" sections after the boiler, gravitational forces may not be enough. In this case, the circulation pump helps to "push through" the coolant. You have indicated that you have a Navien boiler installed. As far as we know, all Korean-made wall-mounted household boilers are equipped with pumps.

Perhaps installing a larger pump will help you. There is a possibility that the standard equipment does not provide the required parameters. In some cases, when things are really bad and nothing helps at all, it is recommended to install an additional pump at the entrance to a separate heater.

If the speed of the coolant in the line is sufficient, the partial reduction of the cross-section on the line in the area where the device is connected, between the inlet and outlet, will help to "drive" the liquid through the battery. You should use this method carefully and do not use it unnecessarily. You cannot just insert a narrower pipe. A shut-off valve should be cut in, the diameter is equivalent to the line, and the result should be achieved by gradually adjusting it.

It should be noted that in a one-pipe system, the coolant must cool down passing through a looped line. The battery farthest from the boiler in supply should a priori be colder than the others. If it is installed higher than other appliances, has more sections, this will further increase the difference in temperature.

• Now let's assume that your heating system is installed in a two-pipe system. There are at least two dozen versions of such a system, both with natural circulation and with forced circulation.

Two-pipe gravity system with serial connection. Correct adjustment of the system is impossible: when the flow on one of the radiators decreases, the degree of heating of the subsequent ones inevitably decreases. If your system is mounted in a similar way, you will not be able to achieve a positive result. Installing a more powerful circulating pump may help in part.

Probably, your heating devices are connected in series. Today, more often the lines have a small diameter and the required flow rate is provided by a circulation pump.

A correctly calculated and assembled two-pipe system, in contrast to a one-pipe system, lends itself to fairly accurate balancing.Without touching the last, cold battery, the previous ones "press down", tighten the valves. The coolant flows are balanced, achieving comfortable heat transfer from each device over time. The main adjustment is made by partially closing the check valve. Thermal heads and flow valves ensure precise balance. Try to cover all the previous batteries first. If heat goes into a cold device, the system can be configured.

The simplest two-pipe system with natural circulation. Placing the supply branch on top avoids problems with a "cold" battery. Parallel connection makes it possible to regulate each individual heater. To one degree or another, you can balance the system and raise the temperature in the distant device

In the case when a two-pipe system is divided into several branches, their mutual balancing may also be required.

If the adjustment does not work, the reason may be insufficient pump power. Or too big a difference in the hydraulic resistance of different branches. In this case, you will have to put forced circulation on each branch.

More modern two-pipe scheme with forced circulation. It is easy to ensure the same temperature in all devices by means of mutual adjustment of the batteries. Please note that the pump is installed on the return line

In a two-pipe system with a series connection of devices, there is also a loss of temperature of the coolant to the last device. If pipes are embedded in walls or floors, they must be insulated with thermal insulation.

• The reason may also be carelessness in the installation. We have already mentioned the narrowing of the pipe section. Perhaps the thermostatic valve is installed "at the wrong end" (not horizontally, but vertically). When installing the battery, debris could have gotten inside, the sealing tape partially blocked the duct. Maybe the supply and return are mixed up (funny, but it happens). The inlet and outlet are located in the direction of the flow, the outlet is only at the bottom of the battery. The air vent should be located not only on the radiators, but also at the top of the system. Many circulation pumps also have air bleed devices. Gases must be regularly removed from the system.
• In systems with natural circulation, the boiler must be placed below the radiators. Failure to comply with this rule, long lines and insufficient diameter will lead to the fact that the last devices remain cold. If you have a boiler without a pump installed (there are similar floor-standing options, even imported ones), you will have to deliver.
• When the system is initially filled with ordinary water and the make-up is connected to the water supply, a rather large volume of gases initially dissolved in the water can be released from the coolant within a month. If you finished your work recently, the composition of the liquid has not yet stabilized. Perhaps it's just that you need to bleed air more often.

Why is the last battery cold in a private house. Why cold batteries

Airlock. If there is a valve then open and release the bubbles. In new batteries, valves are usually installed. You can knock on the pipes and shake them so that air comes out. He can push through the pump. And it will heat up faster the first time you turn it on.

If it is clogged, then knock on the pipe, especially at the junction with the main pipe and supply and return.

on Saturday I did it in 3 rooms and a kitchen .. everything came out in

400HP, these are batteries + work

in corner apartments, an additional radiator is always placed on the end wall, I myself live on the first, but not in the corner when I bought the apartment, there were double radiators since the construction of the house, initially I changed them "according to my mind." that is, I made a project. They came to me and figured out which ones to buy. Well, they are so thick and long. warm normally))) so that according to the law, everything is possible, as I wrote.

the cost of batteries, spare parts (spare parts for about 15 lats (if copper)) + 25 for work + 10 for shutdown and all this for one battery, if you want 2 multiplied by 2 everything took 3 hours

Call your friends. The person exhales almost 37 degrees. What is not a heater

You asked it all the same. No, the fact that I will now see what is happening behind the battery will not make me feel warmer!

cold water is rigas udens. call them, they will send plumbers and tell them what to do

the flow temperature is regulated by the automation in your heating unit. total - either the heating curve is incorrectly set, or the outside temperature sensor does not work correctly, or the two-way controller is buggy. contact the house manager

Or someone at home secretly installed batteries of undesignated capacity, with a large margin. Because of what he has Tashkent at home, and the rest in the house are freezing at 15-18 degrees

Causes of heating problems

First you need to make sure that the heating is really given, and the heat carrier of the required temperature is supplied to the heating system of the apartment. In the absence of problems with the central network, among the reasons for cold radiators are:

• the presence of air congestion in the system;
• clogged batteries;
• incorrect connection of elements of the heating network.

In each situation, a certain amount of work will need to be done to get cold radiators hot.

Helpful hints

If the batteries are cold, and the most likely reason for this is the presence of an airlock, then experts do not advise draining the coolant from the system. On the contrary, its constant circulation will facilitate the removal of air through the relief valves.

In individual properties, there is an expansion tank in the heating system. In order to prevent the occurrence of air locks, a tap can be welded to the lower pipe through which the system must be filled with water.

It should also be borne in mind that all kinds of decorative screens for heating devices are at the same time an obstacle on the way of warm air masses. The exception, perhaps, is metal products, since this material has good thermal conductivity. Do-it-yourself brick ovens for summer cottages study at the link.

Air congestion

The most common cause of heating irregularities is air locks, which are formed due to leakage, rapid filling of the system or as a result of water heating. They appear especially often in apartments on the upper floors.

In order for cold radiators to become hot, air must be removed from the system. Modern models are equipped with special vent valves located at the top of the batteries and operate in automatic mode. Also, a Mayevsky or drain valve can be installed on the radiators, with the help of which the air is manually eliminated.

The Mayevsky valve is a cone-shaped threaded rod, when unscrewed, a through hole opens and the gaseous medium is removed from the coolant.

What to do if they are absent? If they gave heating, and the batteries remained cold, you should contact the management company or the housing office and call a plumber to remove air from the system. Usually, a preventive check is carried out after the coolant is supplied to the system in order to exclude its uneven heating.

Connection errors

Another reason why they can stay cold is incorrect connection of the heating system elements. The grossest mistake is considered to be the connection of radiators with pipes, in which the water is supplied from below. In this case, the sections heat up unevenly, and part of it remains cold. This is most often the case for lateral connections. What to do to ensure that the surface of the radiators is heated evenly and the apartment becomes warm? To do this, you need to correctly connect them to the system.

Too many sections can also contribute to uneven heating, since the circulation of the coolant is difficult. A special extension cord connected to a pipe that supplies hot water to the battery will help to improve it.

Advice! For uniform heating of radiators, the best option is a diagonal connection, which ensures maximum efficiency of the heating system.

Quick check

Step 1: call the management company (or HOA, DEZ, etc.)
Find out if there are heating cuts. If they are not there, go straight to the next step.

Step 2: ask the neighbors

If in an apartment building there is a one-pipe heating system (one heating pipe comes out of the ceiling and one pipe goes into the floor) and the neighbors do not have bypasses (jumpers between the pipes) on the batteries, then by closing the battery, they will deprive the neighbors of the riser heat. Therefore, check if the residents' battery is not blocked from above and below (in some houses, the coolant is supplied from above, in others - from below).

Step 3: check your battery

Check if your battery is overlapped. When the battery is closed, the valve is located perpendicular to the pipe; when open, it is parallel. Take a look here.

So, we have analyzed the "banal" reasons due to which the radiators do not heat up. If the problems are not in them, then there are malfunctions in the heating system. A plumber will help you identify them. Below we will tell you about the main malfunctions due to which cold radiators remain in the apartment and in a private house.

Clogged heating system

Batteries are often cold due to deposits on the inner walls of the case. The reason for their appearance is various impurities in the composition of the coolant and the products of the interaction of hot water and metal. What to do in this case?

Cleaning of radiators in an apartment is performed in several ways, each of which requires certain equipment and performance conditions.

If at the inlet and outlet of the coolant, then it can be done even with the heating system running. For this, the radiator is removed and the impurities are washed off with a strong stream of water. In case of failure, the sediment from the walls of the housing is removed using chemicals. After drying, the heater is installed in its place, and the joints are carefully sealed.

It is possible to remove deposits from the walls of the batteries without removing them. This is done using special equipment using the following methods:

• Chemical. It is carried out using solutions of organic and mineral acids, alkali and other compounds. It is produced using special equipment, consisting of a pump, a container for a cleaning liquid and hoses. The method is irreplaceable for steel pipes.
• Hydropneumatic. Used with equipment that can generate high pressure. Water serves as a cleaning fluid, due to which turbulent flows are formed, destroying deposits on the walls of pipes and radiators.
• Hydrodynamic. It is carried out with a jet of water under high pressure, the supply of liquid to hard-to-reach places is provided by various nozzles. The cleaning method is effective for cast iron heating elements and is very expensive.
• Pneumohydropulse. It is used for batteries and pipes, the diameter of which is no more than 150 mm. Deposits are removed with a water-powered pneumatic gun, which can act as a point.

As a result of a careful study of the causes of uneven heating and its competent elimination, cold radiators will become hot, and the living quarters will have a comfortable temperature.

After the central heating system has been put into operation, it takes some time for it to come into operation.

Clogged system - how to clean the battery?

First of all, check if the supply to the specific circuit, where the battery is clogged, is not blocked through the manifold of the heating system.In fact, clogging of the heating system is quite common and there is nothing surprising or sad about it. Either the blockage occurred due to the wear of the system, or the coolant is supplied to the system without a filter and the water is simply dirty. However, more often this happens simply due to the fact that for a long time of operation in the radiators, deposits occur on the inner side of the pipes and the system becomes clogged. There are very sad options when only replacing the radiator will help. If you do not know how to clean cast-iron batteries, then this is exactly the option, it is better to purchase bimetal or other modern radiators, the efficiency of which will be higher, the view is more pleasant, and the work is more stable.

If the battery is already clogged of a modern type, then it is enough to know how to clean the battery at home. Let's take a look at a few points worth knowing:

What to do if the apartment is cold?

If at the beginning or the height of the heating season, one battery in the apartment or the entire circuit does not work, you need to contact the organization dealing with the heating of the house for help. To do this, it is enough to carefully read the settlement receipt. It comes monthly. It without fail indicates:

• the address of the heat supply organization;
• hotline or emergency telephone number;
• if possible - the address of the organization's website.

Using this data, it is easy to contact specialists and ask them for help if they have provided heat and the batteries are cold.

Try to let the air out, maybe the reason is in it.

How soon should the issue of heating the house be resolved?

According to the current legislation, the problem associated with an insufficient level of heating at home should be resolved in the following terms:

• within 16 hours, if the room temperature is within + 12 ° C;
• after 4 hours, if the air in the apartment has warmed up to + 10 ° C.

For each hour exceeding the specified limit, the payment for the provided heat should be reduced by 10-15%, according to the current tariff. This applies to those cases when the batteries in the apartment are not completely heated. What if the radiators remain cold in a separate room or separate wiring? If either heats up, but by half, then there will be no reduction in payment for the services provided. But at the same moment, the consumer has the right to call a specialist from the service organization so that he can fix the breakdown.

Before the arrival of a specialist, it is necessary to establish that only one of the rooms has a cold battery or the problem extends to the entire apartment, or maybe to the entire riser or staircase. The collected information will help the plumber quickly navigate on the spot and eliminate the breakdown as soon as possible.

So that the apartment is always warm ...

Many ordinary people wonder if. First of all, you need to notify the company that provides the house with heat. It is her specialists who are obliged to repair the heating circuit as soon as possible. In some cases, a reversal of utility bills is carried out.

Radiators in the house can be cold due to airing of the system, accumulation of dirt in it, low heat carrier consumption, improper installation of the heating circuit. Only a specialist can correctly establish the nature of the breakdown, and therefore, correctly eliminate it. It is prohibited to carry out any adjustment work independently. The question is disclosed in more detail in the video:

A cold heating radiator at the height of the heating season is far from uncommon. Such a nuisance happens not only in an apartment, but also in your own house.

All the batteries are hotter at the top, colder at the bottom. However, when the temperature difference is very large, this indicates a problem. After all, the radiator emits heat much less than planned.

Clogged heating riser

Clogging of the heating riser in an apartment building is determined by the cooling of heating radiators in several apartments. Typically, such radiators can be located vertically one below the other, depending on the configuration of the particular heating system. Usually, with such a breakdown, the upper floors receive enough heat, and the lower ones freeze. This is especially noticeable with a strong minus on the street.

The reasons that lead to blockage of the riser are usually laid down at the installation stage. A decrease in the diameter of the riser pipe by 0.25 in comparison with the design one leads to clogging with oxides and debris after a few years.

Clearing such a blockage in the system riser usually requires the work of a qualified plumber team. Often, such repairs also require the consent of other residents, including those apartments that are not directly affected by the emergency.

The problems of the radiators themselves

Why is the radiator hot on top and cold on the bottom and how to fix it?

The bottom of the battery is clogged with dirt

1. At first in my apartment
   ... When they are warm, interview your neighbors.
2. When everything is in order with them, and with the heating wiring, as well as radiators, it means that it is in your device that matters.
3. Most often, the reason is that he was clogged with dirt.
   - metal oxides (rust) and other suspensions, which, when settling, do not allow the coolant to pass through. Therefore, the top of the radiator is hot - the bottom is cold.
4. Try to warm up the battery in the problem area
   ... The water will boil there, set in motion and possibly the suspension will leave.

Note! Of course, the more efficient way to clean the battery is to remove it and rinse it out. However, you cannot do this work on your own, because you will have to disconnect the entire heating riser from the water. Housing office workers will refuse to do this in the winter cold. Therefore, the batteries should be flushed in advance, before the start of the heating season.

Air in heating devices

Batteries often do not heat well, because a plug of air was created in them. It is formed when the coolant is heated and the heating system abruptly fills it.

When the radiator is equipped with an exhaust valve, it is not difficult to deal with the problem with your own hands.

1. On modern types of batteries, this device is mounted at the top and functions autonomously, periodically bleeding off excess air.
2. Manual valves are also often used. They should be unscrewed and kept in this state until water begins to flow.
3. There are no taps on older models. But there is a stub.
4. Place a basin under the radiator to prevent water from spilling onto the floors. Unscrew the cap until you hear a hissing sound. Wait until all the air has come out and water begins to ooze. Then screw the plug back.

Incorrect installation of heating system elements

Now the following types of connection of heating pipes are common: diagonal analogue, bottom connection, side mounting.

1. The instruction considers the diagonal type of connection to be the most effective now.
2. The pairing is not correct when the supply line of the coolant is connected to the bottom of the batteries. Then hot water flows in the lower part of the heater and does not fully warm it up. Installation of an extension cord for water inflow can correct the situation.
3. Lateral connection is also ineffective. Then, in the radiators, only the initial sections warm up enough, at most 4/6. In this situation, qualified plumbers can help you.

Note! Cases are very common when radiators are hot on the last floors of apartment buildings, while below they are slightly warm. Here the problem is obvious - an illiterate design and installation of the heating system. Here you will not be able to do it yourself; the consultation of an independent heating engineer will be necessary.

It should be noted that the number of sections in any type of heating system should not exceed the regulatory limit.

1. When heating by gravity (gravity), the radiator should not have more than 12 sections.
2. In forced circulation systems, it is not worth making up heating devices, more than 24 sections. Otherwise, the last ones will not warm up anyway.

Illiterate arrangement of an autonomous heating system

When arranging heating in your home, the question often arises why the last radiators in a two-pipe system are cold.

Why are batteries in a private house poorly heated?

Batteries in this case may be cold from below, when the "return" and "supply" were confused, or the circulation rate of the coolant inside the devices is not high enough.

1. In the first case, everything is simple. The battery was incorrectly connected to the supply and return pipes of the heating system. Here it is enough to disconnect the radiator and connect it correctly, according to the heating scheme.
2. When the radiator is hot from above and cold from below in the second case, this is explained as follows. When the coolant flows through the system at high speed, its elements will be hot everywhere. When the speed is low, the water gradually cools and the bottom of the radiators becomes colder.

Output

Inefficient operation of a heating radiator can be caused by completely different factors. First of all, you should understand what is the cause of the problems and only then try to eliminate them. The video in this article is also devoted to this topic.

Very often on thematic forums, the question of why the last battery is cold is discussed. This applies to both the heating circuit of a private house and the distribution of centralized heat supply in multi-apartment buildings. Also, a situation may arise when the heating element does not heat, being in the middle of the wiring. It is impossible to answer unequivocally to such questions. After all, there can be many reasons for such a situation. Also read: "Why is half of the radiator cold?"

Global heating circuit problems

Kote doesn't like cold batteries.

The reasons why one battery is hot and another is cold can be global:

• the bypass is incorrectly installed;
• there is no balancing;
• insufficient pressure.

Bypass wired incorrectly. The bypass is a tube in front of the radiator. It connects the supply of the heated coolant and the return flow. The last battery does not heat well if the bypass is installed too far from it. Indeed, according to the laws of physics, it will be easier for the coolant to pass through the bypass than through the entire heating element.

The bypass cuts directly into the wiring and not through the two- or three-way valve. The coolant enters the radiator through taps. As a result, the cross-section of the supply pipes decreases. There is not enough pressure in the system to push hot water through the circuit. As a result, the last heating radiator does not heat.

Often, when the heating circuit is first started up in the house, the last battery does not heat up. What to do? Experts recommend not taking radical action and letting the system align. The air that is in the water must come out naturally. After a while, the heating wiring will function normally.

Bypass dimatr error.

Incorrect installation of the radiator. Why doesn't the last battery warm up? The last radiator in the heating circuit may be too large. It contains more than 12 sections. In this case, the pressure in the system is not enough to drive the coolant through the entire volume of the heating element. The situation is aggravated by lateral connection. Hot water must not reach the outermost sections. As a result, the last heating radiator does not heat well.

Incorrect balancing. Balancing the system means the uniform distribution of the coolant throughout the entire heating circuit.It is performed using shut-off valves and thermostats. If the last battery in the heating system is cold, then perhaps the problem lies in the uneven distribution of hot water along the wiring.

Everything about plastic pipes for heating: characteristics, dimensions, installation.

How thick should the steel pipes be for heating? The answer is here.

Local causes of inoperability of the heating system

The last battery is too long.

Why is one battery hot and the other cold. Experts name the following reasons for this situation:

• airing the system;
• low quality of the coolant;
• poor quality of the heating element.

In most cases, the above problems are solved independently by the homeowners. However, the help of a specialist is never superfluous.

Today, XLPE pipes are most often used for heating.

About whether it is possible to paint heating pipes made of plastic here.

Airing the system. Air can accumulate in individual elements of the heating system. This phenomenon is called contour airing.

Air can enter the wiring:

• from an open expansion tank;
• if ordinary tap water was used as a heat carrier. It contains a certain percentage of dissolved air;
• the aggressive medium of the coolant oxidizes the walls of aluminum radiators. As a result, oxygen is released. It accumulates inside, forming a plug.

It is easy to determine if there is an air lock inside the heating equipment. To do this, turn off the taps on the supply pipe and return at the same time, and then open them in complete silence. If, at the moment of opening the tap, there are extraneous noises and gurgling inside the device, there is an air lock. It is she who is the main reason why one battery is cold, the rest are hot.

How to remove air jams, the video will help:

Debris and rust in the heating circuit can also explain why the last radiator is cold. Foreign objects block the flow of hot water, thereby reducing the heating efficiency of the house.

Incorrect connections in the heating system

Correct design and installation of a heating system is the basis for the efficiency of space heating and optimization of heat consumption. Incorrect bypass installation is a common mistake. It should be noted that the installation of a valve directly on the bypass is prohibited. With such an installation, it is possible to shut off the circulation on the entire riser if the tap on the battery and on the bypass is closed at the same time. This is especially true in an apartment building and with a one-pipe connection scheme.

Too large, in comparison with the design, the number of sections that make up the heating radiator. If necessary, you can connect the radiator "diagonally" or install a "flow extension" on such a radiator. Such a bypass - flow extension can be made independently or purchased ready-made.

In case of a multi-circuit system, balancing valves should be provided in the shorter arm of the system during installation. With such taps, you can even out the temperature balance in different parts of the heating system.

Why don't the batteries heat up?

You have noticed that the last battery in the heating circuit of the house is cold. What to do? Experts advise to first determine the nature of the breakdown. It can be both global and local. In the first case, you need to pay attention to the correct installation of the bypass and the heating element itself. The breakdown can be eliminated only by redoing the heating wiring in the house.

Local breakdowns include air locks and impurities inside the heating element. They are the main reason why the middle or last battery in the heating system is cold.These problems can be independently eliminated by a person without professional skills. But the help of specialists will not hurt here.

Does the coolant affect the heating of the batteries

The use of one or another composition of the coolant has some effect on the heating process.

To transfer thermal energy through the heating network, the following are used:

• water with good thermal conductivity, but contributing, without preliminary purification, to clogging the system;
• antifreeze - a special anti-freeze substance;
• various compositions (salt, alcohol, others).

A big plus of antifreeze is its ability to withstand negative temperatures, which means that the water, being in the heating system, will not freeze. You can safely leave the house at any time in winter without fear for the integrity of the heating system elements.

Ethylene glycol is often the basis for the production of antifreeze. The heat capacity indices of this composition are lower than those of water, by about 15–20%: both the accumulation and the release of thermal energy are somewhat worse for them.

Antifreeze prices for the heating system

Antifreeze for the heating system