Do-it-yourself heating system repair in a private house

In detail: do-it-yourself repair of a heating system in a private house from a real master for the site my.housecope.com.

Heating is the most expensive item when living in a private house. Installation, maintenance and operation of systems are very expensive. The service life of pipes and heating devices is quite long, but not infinite. Sooner or later, some elements of the system fail. You can call specialists or make repairs to the heating in a private house yourself. There is nothing particularly complicated about it, so it makes sense to consider the main types of faults and think about how to solve the problem with minimal financial costs.

Routine repair is the repair and replacement of worn-out system elements. As a rule, this is the elimination of leaks, minor repairs of boilers, etc. Such an event usually does not require a long shutdown of the entire system and costs little money. Overhaul arises a need during periods of overhaul and reconstruction of buildings, in cases of wear of all or many parts and assemblies:

replacement of a boiler, stove or heat accumulator;
complete or partial replacement of heating pipes;
installation of new radiators or underfloor heating systems.

The need for overhaul occurs infrequently, sometimes systems serve for several decades without serious breakdowns. The frequency of replacement and refurbishment of the system depends on the quality of the heating devices and pipes that the owners choose for specific buildings. Therefore, when choosing, you should pay attention to the products of firms with a good reputation and to the technical characteristics of the models.

There are several reasons for battery breakdowns:

radiators are initially of poor quality or poorly mounted;
poor quality coolant and harsh operating conditions of batteries (for example, high operating pressure);
corrosion, the appearance of plaque at the joints of radiators and pipes;
wear of the intersection gaskets and / or threaded nipples.

Video (click to play).

It happens that there are several reasons why the batteries have leaked, and they are associated with the "advanced age" of heating devices. In this case, partial repairs will become a never-ending and pointless endeavor. It is better to spend money once on the purchase of new equipment than to constantly patch up the old one. If the batteries are still relatively new, then the exact location of the leak should be identified and repaired.

Most of the time, the location of the leak is obvious, but sometimes it can be difficult to identify. Easy way: Run a dry white cloth over the area of the battery where you suspect the problem. There is a leak in the area where moisture has soaked in the napkin. If you still can't find it, then you need to turn off the system, remove the radiator and immerse it in a bath of water. Where air bubbles go, it flows there.

After completing the diagnostics, prepare the repair tools:

putty or welding machine;
sealant;
thin steel cable;
whitewash;
metal clamp, bolts and nuts to it;
a small amount of gasoline;
an oilcloth and a rag to protect the floor from moisture.

Clean the place of leakage to metal, rinse thoroughly with gasoline.
Treat with putty: apply the composition on a strip of fabric and wrap it around the joint in 2-3 layers.
Place the clamp on the putty and secure with bolts. Seal, wait for all materials to dry and touch up.

The reasons for the appearance of leaks in pipes are the same as in radiators: wear "from old age", chemically aggressive coolant, pressure surges, leakage at the joints.Usually, it is not difficult to repair or replace a pipe, but if the wiring is hidden, then problems can really arise. That is why, with hidden installation, they necessarily provide for the possibility of free access to communications.

For urgent repairs, you need to stop the operation of the system: turn off the boiler, pumps, close all valves, drain the water. To eliminate the leak, you will need a clamp with a seal. Then you should proceed like this:

Parse the connection.
Apply a layer of pre-roll.
Install the clamp.

If the pipe is steel, and the leak is not formed at the joint, but on the body of the pipe, you will have to use welding. When repairing copper products, welding is also used, but this process is more complicated, so you will have to contact a specialist.

An alternative to welding is capillary brazing. Unfortunately, it is not always effective and the pipe leaks again. If this occurs repeatedly, replace the damaged area. This will require less effort, nerves and money than a new repair of worn out metal. Metal-plastic pipes are not repaired, but immediately replaced.

Experts strongly advise against repairing heating boilers on their own. This should be done by professionals, because negligent or inept work can lead to unpredictable consequences. After installing the boiler, keep the operating instructions. It clearly states what and how the owner can do it himself:

adjust the temperature;
turn on the gas supply;
remove air.

Entrust the rest of the work to people who are well versed in heating technology. Do not risk your life and property.

If there are no big problems with the repair of pipes and radiators, everything can be done by hand, then it is better not to try to repair boilers and circulation pumps yourself. A faulty boiler is fire hazardous, and the pumps often "do not survive" after the intervention of amateurs in their work. To repair these elements of heating systems, call the masters.

Residents of private houses sooner or later face the need to repair the heating system.

Cold battery, leaking pipe, boiler problems - these are just three of the many reasons why you have to maintain the heating circuit.

Some breakdowns impossible to eliminate without the involvement of specialists... But most problems with the supply of heat can be easily solved on their own.

The key to the smooth operation of the heating system is its timely revision and replacement of expired elements. If more than half of the heating circuit is worn out, then in the summer it is high time to arrange a major overhaul.

Overhaul provides for the complete replacement of equipment or most of it. In the heating system the following nodes are distinguished:

pipes;
radiators;
boiler;
additional subsystems: warm floor, circulation pump, expansion tank.

Replacing the gas boiler is possible only by agreement with the gas service... In most cases, it is the employees of this organization who change the equipment. It is better not to connect the new unit to the old heating system. Least the circuit must be thoroughly rinsed... In some cases, a complete change in the heating scheme will be required.

Replacing radiators - the task is simpler than changing the boiler. The owner of the house will be able to cope with such a repair on his own. In case of capital transformations it is impractical to change only the batteries, and leave the old pipes... If you change, then all at once. Otherwise, dirt from old batteries and pipes will very quickly render new products unusable.

There are many products on the market for heating devices. Craftsmen give preference polypropylene pipes and radiators with high heat dissipation... The new system includes emergency shutdown valves for individual batteries. It seems like a cost, but it helps out in the event of an emergency replacement.

Photo 1. Installed bimetallic radiators and polypropylene pipes. Additionally, emergency shutdown valves are installed.

During the overhaul of the heating, it is possible to revise additional circuits and, if necessary, replace them. This concerns water circulation pump and hydraulic compensator, if available in the system. Equipment failure in winter is fraught with negative consequences. The pump is inspected and the control pressure is measured.

When operating a water heating system in a private house, various problems can arise. Malfunctions that occur in heating elements and fittingsperhaps fix it yourself. Some common problems are also solved by the owners on their own. Boiler repair tasks require specialized knowledge and experience. It is better to entrust them to specialists.

There may be several reasons for the low heating of batteries in a private house. The main sources of the problem:

Air has entered the heating system and formed plugs.
The radiators are clogged with dirt and no longer provide sufficient heat transfer.
The pressure in the heating system has dropped and is not pushing through the entire circuit.
The installation of heating equipment was carried out with violations.
Someone turned off the taps at the battery.

First of all, it is advisable to deflate. Modern radiators provide for this special cranes of Mayevsky.

Important! You should be careful when opening the tap. Move away unnecessary items substitute a vessel under the drain hole.

If the air release did not help, then it is advisable to flush the system... The plug at the battery is unscrewed and a large capacity is substituted. It is good if the system provides a faucet for such cases. It is advisable to drain the water until the liquid is clear. In especially difficult cases, you will have to remove the entire battery and rinse it separately under pressure.

The pressure in the heating system of a private house is created by a circulation pump and an expansion tank. To increase the pressure, it is often enough to open the valve at the boiler and let in an additional amount of heat carrier into the system. Such a problem often occurs in double-circuit heating devices.

In case of incorrect installation, it is not easy to deal with the problem. Better to invite specialists.

When the pressure drops periodically, then this speaks of one of three phenomena:

A leak has formed in the equipment.
Air is slowly escaping from the system.
New aluminum batteries are being run-in.

To locate a leak all parts are carefully examined heating system. Where water seeps out, there are almost always signs of corrosion or white salt deposits. When a leak occurs in the pump and boiler components, it is imperative to inspect them. To check the expansion tank just push the nipple... Splashing from this part of the lifter will mean that the diaphragm will have to be replaced.

Often, a periodic drop in pressure in the system is associated with improper filling of it with a coolant. Air may enter the system during initial start-up or after an unexpected shutdown of equipment. By circulating through the pipes, the air will slowly be removed, and the pressure will drop. In this case, it is advised to make water discharge at the point farthest from the boiler when the make-up is on.

Aluminum batteries tend to extinguish pressure at the initial stage of their work. This effect occurs due to oxidation processes inside the radiators.

Balancing in a home heating system necessary for even distribution of heat between radiators.

It is possible to accurately balance the water supply to the radiators only with the help of a special device.

At home, calibration is based on the temperature of the batteries.... The flow is regulated by taps.At the farthest point, the valves open completely, and then go to the boiler in decreasing jet power. On the radiator closest to the AGV, the valve opens quite a bit. The alignment process is lengthy and very tedious, in the absence of relevant experience.

Coolant movement in the heating system implemented in two ways: forcedly or by means of convection flows. Lack of circulation in the circuit will lead to the fact that the batteries will be cold when the boiler is in good working order. Disrupt the movement of water along the highway pump breakdown or blockage in pipes... The cause of the plug is dirt, air in large quantities, sagging at the soldering points of polypropylene pipes, rust build-up inside steel structures. Sometimes the circulation is disturbed by the ice plug at the site.

Repairing heating equipment requires a responsible approach.

The gas boiler is the main and most difficult element in the entire heating system of a private house. The automation of this equipment is proceeding at such a pace that even specialists do not have time to keep track of all the innovations. However primary diagnostics and elimination of minor faults, really do it yourself.

Photo 2. The process of repairing a gas heating boiler. Work should only be carried out by a qualified technician.

Most of the boiler malfunctions, which can be eliminated by yourself, described in the equipment passport.

Boiler breakdowns that are repaired on their own:

Boiler malfunctions caused by voltage drops in the electrical network. To eliminate the boiler, connect it through a stabilizer or an uninterruptible power supply.
The pressure has dropped, the boiler has stopped and does not turn on. The pressure in the system is raised to normal by opening the water supply tap.
Boiler shutdown due to overheating. The heat exchanger is clogged on the outside. Complete de-energization of the heater and cleaning the heat exchanger with a brush and a vacuum cleaner will help.

Important! Cleaning the parts inside the boiler it is better to entrust it to professionals!

AGV turns off after 2-3 minutes of work and does not turn on until it cools completely. Chimney clogged. It is recommended to clean the ventilation duct.
Water leaks from the gas water heater. To solve the problem, all pipes and clamps inside the boiler are inspected and the leak is eliminated.

Attention! It is important to remember that faulty gas equipment poses a potential hazard. Therefore, the main thing is to timely contact specialists and eliminate the problems that have arisen.

Circulation pumps are used in home heating systems. These devices are divided into two types: monoblock and collapsible.

If a model consisting of separate blocks is used, then sometimes it is possible to repair it with your own hands.

Pumping equipment malfunctions that it is possible to fix it yourself:

The pump hums, the impeller does not rotate. It is advisable to disassemble the pump, turn the rotor and, if possible, clean the accessible parts from oxidation. Sometimes the reason for such a problem lies in a foreign object that has got inside.
The pump does not hum, nothing rotates. It is recommended to look for a fuse. If not, then it's time to change the pump.
The pump makes a lot of noise when switched on. There is a lot of air in the pipes. To troubleshoot, open the water make-up valve and bleed the air from the boiler.
The pump stops a few minutes after startingdoes not produce enough pressure. Limescale or other obstructions have formed on the pump cover and prevent normal operation. The solution to the problem is to remove and clean the cover.

Repair work on replacing pipes is carried out in the process of overhauling the heating system. When installing new pipes, the following rules are followed:

Before starting work, it is advisable to turn off the water in the house.
Water from the heating system is completely drained before dismantling the old equipment.
Taps are provided for each battery. The necessary fittings are calculated and prepared in advance.
Pipes are placed at some distance from the floor and walls so that it is convenient to work with them.

Photo 3. Installation of polypropylene heating pipes. A special laser is used for marking.

Watch the video on how to adjust the circulation pump for heating systems.

The owners of a private house inevitably have to become experts in many areas of construction and renovation. The heating system is no exception. Calling a foreman is not cheap, and specialists cannot be found in some localities. In some types of heating repairs there is nothing complicated, work will be performed even by a person without technical qualifications.

Heating installation is already the final stage of the whole process of creating comfort and coziness in a country house. You have thought over and implemented such mandatory ideas as the insulation of walls, floors and ceilings, as the installation of reliable window systems. You have arranged your house in such a way that the rooms are simply "bathed" in the cold winter sun. You may even have already created a full-fledged fireplace in the large living room.

Heating installation requires an accurate understanding of both the heating system used and all the elements included in it

Now it's time to start installing the main heating system.

The basis of everything is a thoroughly worked out layout of the future heating system - sketch, possibly three-dimensional and working - detailed floor-by-floor

As a matter of fact, you started solving the problem of how to mount heating in a private house long before all the necessary equipment was even delivered. You in advance:

Provided generally accepted building techniques for keeping warm - windows, walls, fireplace, house orientation;
We chose a room for placing the equipment of the system, optimizing it with respect to external communications;
Provided at least detailed consultations regarding a possible 380 V power supply;
Provided the supply to the house of as much power as possible of the power supply network, available for living in private houses in your area;
We entered into an agreement with a specialized contractor for the design of the entire system and its installation;
Set ourselves up for close contact with contractors in order to keep abreast of all decisions made;
Outlined their approximate plan of heated premises; perhaps there will be no need to heat some - there is a fireplace, double-glazed windows and all the walls are carefully insulated.

Of course, you can try to create the entire heating project and independently, moreover, even independently and carry out the installation. But doing this without having special knowledge and skills is strongly discouraged. The cost of mistakes will be quite high.

The contractor's foremen will have to:

It is quite difficult to complete the installation of heating a private house with your own hands in full, but it is quite possible for everyone to set the task of working with pipes and radiators.

Useful advice! Let the moment of final agreement on the plan of your heating system be that “moment of truth” when you once again carefully check all the decisions made earlier. For now, everything can be changed. Already during the installation process, it will be more and more difficult to make any changes without special financial and organizational problems. It is fundamentally important to legalize the created and agreed heating plan. Be sure to include in the plan steps to develop the system and increase its capacity.

The entire installation of the heating system consists of the following steps:

Installation and reliable fixation of the heating boiler, necessarily taking into account the convenience of supplying the selected heat carrier and heat source;
Installation of the pump if a forced circulation system is selected. It is more advisable to install the pump on the return loop of the system, on the path of the coolant from the radiators to the boiler, in order to protect the pump from too high a temperature;
Installing a filter if an open water system is selected with the supply of heat carrier directly from the general water supply system. Installing a filter will be very important for an open system.
Pipeline wiring. Perhaps you yourself or the builders have already done this work in advance, if the pipes are routed secretly behind drywall panels.
Installation of heating radiators. This installation is even recommended to be carried out even at the level of construction work, observing all the rules - strictly in the center under the windows, leaves free space above, to the windowsill, and below, to the floor, at least 10 cm.

Read also: Vaz 21213 DIY repair

Please consult a professional before choosing a particular battery. not all radiators may work for you. The main selection criteria are the technological characteristics of the batteries: their suitability for a specific pipe diameter, tolerance to a certain pressure and compatibility with the type of heating system in your home. If you are going to repair heating batteries with your own hands, pay attention to the fact that they can be made of various materials. For example, aluminum models have the highest level of heat transfer, and bimetallic radiators are made using 2 materials (steel and aluminum).

The combination of 2 materials makes the radiators as durable as possible, while the heat transfer also remains at a high level. Do-it-yourself battery repair using such devices is, of course, a very practical event.

The scheme of water heating of a private house.

Do-it-yourself heating boiler repair requires special knowledge, experience and skills. In addition, it will not be possible to do without specialized tools and equipment. The need for such events can be caused by a variety of reasons. So, in some cases, we are talking about minor breakdowns or simple preventive maintenance, in others, the repair of home heating boilers is associated with the elimination of the consequences of various accidents.

A lot in this case depends on the homeowner. If he does not neglect preventive measures, conduct regular inspection and maintenance of equipment, both with his own hands and with the involvement of qualified specialists, then serious repairs are unlikely to be required. It's another matter if the system works without proper attention and care. Over time, such a disregard for her interests on the part of the owner will result in the appearance of many problems, so it is imperative to take due care and attention to the heating system of your home. In this case, you will almost certainly be able to limit yourself to minor preventative repairs that you can do yourself.

Heating system maintenance includes:

Steam heating system operation diagram.

correct setting of the boiler;
preparation of equipment for the heating season;
checking sensors;
checking the operation of equipment automation;
identification of the causes of boiler breakdown.

Of course, if, for one reason or another, it is necessary to carry out a more serious repair of heating boilers, then you will have to involve specialists with qualifications and experience, because, performing repairs with your own hands without proper knowledge, you can aggravate everything even more.

It is very important to understand that there is a huge variety of different equipment on the modern market. Consequently, when it comes to repairing heating boilers with the replacement of parts and assemblies, additional difficulties may arise with their search. That is why experts advise to carry out all preventive work in a timely manner. Then it will be possible to order the necessary components in advance, without waiting for them to finally break down.

You can solve typical problems with heating a private house with your own hands. Prepare the necessary tools for this:

Drill.
Gas and adjustable wrenches.
Hammer.
Screwdriver.

Heating boiler diagram for a private house.

Depending on each specific situation, you may need other tools, but without the above, you will definitely not be able to cope.

If 1 or several batteries do not heat well or does not heat at all, then first of all you need to check if there is any air in them using air vents. If water comes out of the drains, and the battery still does not heat, make sure that both taps of this radiator are open. The next step is to check the radiator for clogging. To do this, other heating radiators that heat normally and are on the same branch with the faulty one must be shut off so that all the water goes through this battery. If it began to warm up, it means that it is not clogged. In this case, it is necessary to perform hydraulic leveling of the branch, i.e. cover the rest of the batteries on the branch, so that more goes to the idle one.

Be prepared for the fact that it will take a lot of time for alignment, because the heating system can react very slowly to changes in its settings.

If the taps in front of the battery are completely open, and it is cold, then it is clogged (which is extremely unlikely). Basically, the last batteries on the branch may not warm up. However, this can always be corrected by hydraulic leveling. If suddenly someone tells you that “it just doesn’t pump it there” or “the pump power is not enough”, do not rush to believe and touch the pipes or the pump.In order not to "pump", it is necessary to make many mistakes during the installation of the heating system, the probability of which is negligible.

Another fairly common problem is the pressure drop in the heating system. Once again, it should be reminded that after starting up, the heating system must be allowed to work for several days or even weeks. Air is dissolved in the heating system, which comes out during manual de-airing and on automatic air vents, but it does this gradually. This leads to a decrease in pressure in the system. At first, frequent replenishment of the heating system is quite common. If the heating has been running for more than a month, and the pressure is still dropping, you can check the next version.

If the volume of the expansion vessel is incorrectly calculated, pressure surges in the heating system may occur, as a result of which the safety valve may be triggered (water release). As a result, there will be a pressure drop during cooling. If everything is fine with this, then the problem is a leak in the system and you will have to find a leak.

Another fairly common problem is pressure surges in the heating system. The expansion tank is responsible for compensating for changes in the volume of the heating system. Consequently, if the pressure changes over a wide range with temperature changes, then the reason is precisely in the expansion tank: it either broke down or its required volume was calculated incorrectly. This usually leads to the operation of the safety valve or even to the shutdown of the boiler due to insufficient pressure in the system. To eliminate this problem, it is better to contact a specialist.

Rarely enough, but still there is such a problem: the supply is cold, and the return is hot. The reason is incorrect installation of the pump, and without a check valve. This is also possible due to the operation of the pump of the underfloor heating system. When the underfloor heating is just started, it works at full capacity, which, under certain circumstances, can disrupt the circulation in the radiator circuit. When the system heats up, the problem will resolve on its own.

Another common problem is poor or no circulation in the heating system. First of all, it is necessary to check the air in the batteries, then the shut-off valves, i.e. taps that can be closed anywhere due to simple inattention. The next step is to clean the filter in front of the heating boiler and in other places, if any. This solves the problem in most cases.

If the problem persists, check the heating pipes for the possibility of air pockets. If there are such areas on the wiring, then the situation can be temporarily corrected by simply draining water under pressure from the battery, which is located behind the loop, as a result of which the air will be expelled from the loop by a stream of water. On large hinges, it is necessary, if possible, to embed an automatic air vent. It will help you avoid these problems in the future. If circulation is not restored, you will have to turn to professionals.

The construction of heating a private house is a very important aspect, which places great responsibility on the owner. The risk of making a mistake is quite large, even with experience in construction. One mistake and the heating system is broken, plus unnecessary costs, and impressive ones.

The heating system of a private house is autonomous, therefore, pipes, radiators, as well as a separate boiler room or boiler will be included in it. Distilled and ordinary water is mostly used as a heat carrier.

It is allowed to use steam or special antifreezes as a heat carrier.Boiler room, pipes, radiators, connecting with each other, form a closed circle or, as I call it, a circuit in which water or antifreeze circulates. The coolant is heated in the boiler, passes along the entire circuit and through radiators or batteries gives off heat to the rooms, after which the whole cycle occurs anew.

An important point: distinguish between forced and independent (natural) circulation of the coolant. Natural circulation is carried out by displacing a heated carrier with a cold one. However, the advantage of compulsory is the speed of heating the house from scratch and the absence of restrictions on the length of the heating circuit.

One of the most important tasks when choosing a boiler is what fuel it will operate on. The greatest demand was received for such types of devices as:

- gas - the most popular models, because natural gas is the most inexpensive fuel, plus these boilers are very economical, environmentally friendly, but the safety requirements for such devices are high;

- electric boilers are the most "harmless" and convenient, there are no dangerous or harmful emissions from them, they are quite simple to install and connect, but the main drawback of this type of devices is the huge consumption of electricity;

- solid fuel - large-sized devices, have a large combustion chamber, in connection with which it is necessary to equip a chimney, practically does not harm the environment

- liquid fuel - for these, an exhaust gas extraction system is required, they are absolutely not environmentally friendly, since they run on diesel, kerosene fuel, plus they are quite expensive to use.

After choosing a boiler, it is necessary to select radiators for the heating system that are suitable for a specific device. It is also necessary to determine the pressure and temperature that the radiators must withstand. Recently, the most popular types:

Cast iron - the cheapest, power 160 W, subject to corrosion, weak strength, low heat transfer, pressure up to 16 atmospheres. Steel - power 1250 W, the least durable of the other types, pressure maximum 8 atmospheres. Aluminum - power 200 W, do not rust, light and small, strong enough. Bimetallic - power 180 W, small in size, very durable (up to 35 atmospheres), made of aluminum, inside there is a steel core.

Pipes for the heating system are of the following types:

steel;
copper;
metal-plastic;
polypropylene.

Steel products are practically irrelevant nowadays - they rust, weigh a lot, are difficult to assemble, etc. The golden mean when choosing pipes is metal-plastic products. They are not as strong as steel, however, they are easy to install, cheap, unpretentious and allow the use of various heat carriers.

All of the above are the most important things that you definitely need to pay special attention to when building a heating system for a private house on your own.

Video (click to play).

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