If the system does not heat, it is time to start repairing it! Heating repair in a private house

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

Cold radiator, leaking pipe, boiler problems — these are just three of the many reasons why you have to service your heating circuit.

Some breakdowns It is impossible to eliminate without the involvement of specialistsBut most problems with heat supply can be easily solved on your own.

Major repairs of the heating system in a private country house

The key to the smooth operation of the heating system is its timely inspection and replacement of worn-out elements. If more than half of the heating circuit is worn out, then summer is the time to carry out a major overhaul.

Peculiarities

Major repairs involve complete replacement of equipment or most of it. In the heating system The following nodes are distinguished:

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

Works

Replacement of a 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. At a minimum the circuit must be thoroughly washedIn some cases, a complete change of the heating system will be required.

Replacing radiators — a simpler task than changing a boiler. The owner of the house can easily handle such repairs on his own. In case of major changes it is not advisable to change only the batteries and leave the old pipes. If you change, then everything at once. Otherwise, dirt from old batteries and pipes will very quickly make new products unusable.

There are many products for heating devices on the market. Craftsmen prefer polypropylene pipes and radiators with high heat output. The new system includes emergency shut-off valves for individual batteries. This seems expensive, but it helps in case of emergency replacement.

Photo 1. Installed bimetallic radiators and polypropylene pipes. Additionally, emergency shut-off valves are installed.

During a major overhaul of the heating system, it is possible to conduct an inspection of additional circuits and, if technically necessary, replacement. This concerns water circulation pump and hydraulic compensator, if present in the system. Equipment failure in winter is fraught with negative consequences. The pump is inspected and pressure is measured.

Main heating problems and methods of their elimination

When operating a water heating system in a private home, various problems may arise. Malfunctions that occur in heating elements and fittings, perhaps fix it yourself. Some common problems can also be solved by the owners themselves. Tasks related to boiler repair require special knowledge and experience. It is better to entrust them to specialists.

The batteries are not working well and are not heating up.

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

• Air got into the heating system and formed blockages.
• The radiators are clogged with dirt and no longer provide sufficient heat exchange.
• 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 on the radiator.

The first thing to do is to bleed the air. Modern radiators have a special system for this purpose. special Mayevsky cranes.

If releasing the air does not help, then it is advisable to flush the system. Unscrew the plug of the battery and put a large container under it. It is good if the system has a tap for such cases. It is advisable to drain the water until the liquid becomes clear. In particularly difficult cases, you will have to remove the battery completely and wash 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 an additional amount of coolant into the system. Such a problem often occurs in dual-circuit heating devices.

In case of incorrect installation, it is difficult to solve the problem. It is better to invite specialists.

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Proper installation is required for quality work! Installation of an expansion tank in a heating system

The pressure is dropping

When the pressure drops periodically, then This indicates one of three phenomena:

• A leak has formed in the equipment components.
• Air is slowly leaking from the system.
• New aluminum batteries are being tested.

To locate the leak location all parts are carefully examined heating system. Where water leaks out, traces of corrosion or white salt deposits almost always appear. When the leak occurs in the pump and boiler elements, they must be inspected. To check the expansion tank just press the nippleSplashes from this part of the hydraulic compensator will mean that the membrane will have to be replaced.

Often, a periodic drop in pressure in the system is associated with improper filling of the coolant. During the first start-up or after an unexpected stop of the equipment, air may enter the system. Circulating through the pipes, the air will gradually be removed, and the pressure will drop. In this case, it is recommended to water discharge at the point farthest from the boiler when the make-up is turned on.

Aluminum batteries have the property of damping pressure at the initial stage of their operation. This effect occurs due to oxidation processes inside the radiators.

Imbalance

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

It is only possible to accurately balance the water supply to the radiators using a special device.

At home, calibration is based on the temperature of the batteries.. The supply is regulated by taps. At the farthest point, the valves open completely, and then go to the boiler in decreasing stream power. At the radiator closest to the AGV, the valve opens very little. The alignment process is long and very tedious, in the absence of relevant experience.

Lack of circulation

Movement of coolant in the heating system is implemented in two ways: forced or by convection currents. The lack of circulation in the circuit will result in the radiators being cold even though the boiler is in good working order. The movement of water along the main line can be disrupted by pump failure or blockage in pipesThe cause of the blockage is dirt, large amounts of air, build-ups in the places where polypropylene pipes are welded, rust growths inside steel structures. Sometimes the circulation is disrupted by an ice plug in the area.

Features of equipment repair

Repair of heating equipment requires a responsible approach.

Gas boiler repair

The gas boiler is the main and the most complex 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 track all the innovations. Nevertheless, primary diagnostics and troubleshooting of minor faults, it is really possible to do it yourself.

Photo 2. The process of repairing a gas heating boiler. Work should only be performed by a qualified specialist.

Most of the boiler problems that can be fixed independently are: described in the equipment passport.

Boiler breakdowns that can be repaired independently:

• Boiler malfunctions caused by voltage drops in the electrical network. To eliminate this, connect the boiler via a stabilizer or uninterruptible power supply.
• The pressure has dropped, the boiler has stopped and will 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. Completely de-energizing the heating device and cleaning the heat exchanger with a brush and vacuum cleaner will help.

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

Repair of pumping equipment

Circulation pumps are used in home heating systems. These The 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.

Malfunctions of pumping equipment, which 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 cause of such a malfunction lies in a foreign object that has gotten inside.
• The pump does not hum, nothing rotates. It is recommended to look for a fuse. If there is none, it is time to change the pump.
• The pump makes a lot of noise when turned on. There is a large amount of air in the pipes. To fix the problem, open the water feed valve and bleed the air from the boiler.
• The pump stops after a few minutes of starting., does not produce sufficient pressure. Scale or other obstructions have formed on the pump cover, preventing normal operation. The solution is to remove and clean the cover.

Replacement of pipes

Repair work to replace pipes is carried out during the process of major refurbishment of the heating system. When installing new pipes, the following rules must be observed:

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

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

Useful video

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

Features of troubleshooting the heating system with your own hands

Owners of private houses are forced to become experts in many areas of construction and repair. The heating system is no exception. Calling a specialist is not cheap, and in some localities, specialists are not to be found. There is nothing complicated in some types of heating repairs, Even a person without technical qualifications can perform the work.