Do-it-yourself wall-mounted gas boiler repair

In detail: we will wipe the repair of a wall-mounted gas boiler with our own hands from a real master for the site my.housecope.com.

Posted by admin in DIY repair 06.05.2018 0 114 Views

Floor standing gas boiler series
Wall heating systems
Conclusion

On the domestic market, there is a wide selection of household gas boilers from different manufacturers and in various price categories. Frankly cheap devices are not reliable, they have a minimum of functions and safety automation.

Models of leading brands have practically no drawbacks, but they are inaccessible due to their high cost. For these reasons, many experts recommend considering installations in the middle price category, domestic or foreign manufacturers. A striking representative of this category is the Slovenian Protherm gas boiler.

A wide range of natural gas heating systems for the home are produced under the Protherm trademark. The series of stationary heating systems is opened by the floor-standing boiler Protherm Wolf, which does not depend on electricity. "Wolves" are produced in two modifications - 12.5 and 16 kW of thermal power, the efficiency is 92.5%, the highest in the series. The heat exchanger made of steel is a two-way one, that is, the flue gases before leaving it flow through it twice in different directions. A single-stage atmospheric burner is ignited manually from a piezoelectric element.

The next floor gas boiler Protherm Bear in the series has several models:

KLZ - the only floor-standing double-circuit gas boiler Protherm with a two-pass cast iron heat exchanger, which has a built-in hot water boiler with a capacity of 90 liters. The unit is equipped with two expansion tanks - for the heating system and hot water supply. The power range from 18 to 49 kW includes 4 modifications. The burner is atmospheric, injection type, modulating. This means that the gas burner device can smoothly change the boiler output within a certain range. The installation is started by electric ignition.

Video (click to play).

TLO Is a completely non-volatile gas boiler Protherm. It differs from the previous model in the absence of an expansion tank and a circuit for DHW preparation. The atmospheric burner operates in a single-stage mode, ignited using a piezoelectric element. The range of modifications - 4 units with a capacity from 18 to 45 kW. The device does not require an electrical connection, but its level of automation is also limited, only safety devices are installed.

PLO - a model with a cast-iron two-way heat exchanger and an atmospheric burner with a two-stage operation. A forced smoke exhaust system can be installed as an option. Ignition is carried out from a piezoelectric element, a line of 5 modifications covers the power range of 18-49 kW. Household single-circuit floor-standing boiler Protherm Bear PLO is a somewhat simplified and cheaper version of the KLZ model.

Model KLOM includes 4 modifications operating in the power range from 18 to 49 kW. There is no DHW circuit or there is no built-in boiler, the cast-iron heat exchanger is heated by an injection-type modulation burner. The gas boiler is fired up and started automatically from an electrical element.

Floor standing gas boiler Protherm Bear

The series is completed by floor heating units Protherm Bizon and Protherm Grizzly, whose power reaches 80 and 150 kW, respectively.In addition, Protherm Bison units are equipped with a Lamborghini external gas burner device with forced air supply, operating in a two-stage mode.

In this series, the following models of Protherm gas boilers are produced:

Panther KTV, KOV;
Panther KTO, KOO;
Cheetah MOV, MTV;
Tiger.

Wall-mounted double-circuit gas boiler Protherm Panthera KTV and KOV are equipped with a stainless steel heat exchanger and a flow element for DHW preparation. The line includes 2 modifications with a power of 25 and 30 kW, the units are equipped with their own circulation pumps and three-way valves. The Panther is a turbocharged double-circuit gas boiler of the Protherm trademark, in which the burners operate in a closed combustion chamber with forced air supply by a fan. Installations Panther KTO and KOO are available only with a capacity of 25 kW and differ from the previous version by the absence of a circuit for supplying hot water. The boilers operate automatically, starting from the stage of ignition from an electrical element.

Less powerful gas boilers Protherm Cheetah (11 and 23 kW) are also equipped with a DHW circuit, the MOV modification works at atmospheric pressure, MTV - with a fan with a closed combustion chamber. The unit's automation has the function of preheating a flow-through heat exchanger for hot water supply, which makes hot water supply almost immediately after opening the tap. The electronic unit that controls the operation of the Cheetah makes it possible to connect to it an automation that responds to changes in the temperature of the outside or room air. To do this, it is enough to purchase a remote thermostat for the Protherm gas boiler, it is sold as an additional equipment.

Heating units Protherm Tiger differ from other wall-mounted models with a built-in hot water boiler with a capacity of 45 liters. The water in it is in a heated state, and in addition to other automatics, a timer is used in "Tigers", it makes it possible for consumers to receive hot water at a specified time.

The company produces boiler plants operating on other types of energy carriers, as well as other additional equipment, such as a heat generator for a Protherm gas boiler. It is an indirect heating boiler that can be used to supply large quantities of hot water. All gas heaters are equipped with reliable safety automation, one of the tasks of which is to turn off the gas supply when the burner flame goes out. Error F29 appears on the display, for Protherm gas boilers this means that the burner has gone out and gas access is blocked.

Slovenian gas installations in the mid-price range are very popular with homeowners. They are automated, easy to use, and require a minimum of attention. Maintenance must be performed once a year, which includes cleaning the heat exchanger and the flue gas duct from soot. For stable operation of the apparatus, the gas valve of the Protherm boiler is periodically adjusted in it.

If the heating system is based on a gas boiler, this allows you to feel the full taste of the convenience of an autonomous heating system: the possibility of self-regulating the temperature regime of the house. But, of course, sometimes such complex units require restoration or modernization. Otherwise, you can create a condition that is dangerous to health and life. A gas boiler repair technician is a person who will avoid such situations.

Any part of the boiler can fail for any reason: poor-quality assemblies, improper operation, hit the expansion tank with an object (and now there are puddles under it every day). Be that as it may, the repair of gas boilers or any others must be carried out very carefully, especially when it comes to the safety group responsible for the correct operation.

At the moment, any foreman responsible for the repair of gas boilers baxi or other knows that the security group consists of the following elements:

Attention! If any sensor fails, you can breathe in carbon monoxide, which the system "did not notice", and get an explosion if the electrode does not work properly.

a thrust sensor with a plate rated at 75 degrees Celsius. This device monitors the state of the boiler chimney, reacts to a failure in the removal of combustion products into the chimney, their exit to the smoke extractors. As a result, it heats up, works, but it is best if a gas alarm is purchased in addition to it;
monostat to protect turbo boilers from insufficient smoke removal due to a clogged heat exchanger or chimney;
limit thermostat that controls the water in the boiler. If it boils, the overheating sensor turns off the boiler;
an ionization electrode to control the presence of a flame. Quite often, the repair of viessmann gas boilers begins precisely with checking the electrode, since the operation of a gas boiler without a flame can even provoke an explosion.
blasting valve for pressure control. At pressures above 3 bar, the system will force the boiler to discharge hazardous surpluses.

Some types of repairs to gas boilers can only be performed by specialists. By the way, in order to prevent boiler breakdown, one must not forget about the UPS for the gas boiler. No matter how skilled the owner is, where such a unit is located, the variety and complexity of the automatic control and management system of the boiler does not always allow a person to correct the operation of the boiler without experience. Repairing a Danko or Viesmann gas boiler at the level of fixing the work of the board also sometimes requires special equipment, which the owners simply cannot have.

The operation and repair of gas boilers from different manufacturers will differ, but, as a rule, electronic boards have a lot in common in their principle. Repairing control boards for gas boilers is quite difficult for a novice craftsman, therefore experienced specialists can tell some of their secrets of setting up boards.

Firstly, you should never immediately apply full voltage to it, otherwise the repair of vaillant or "Zhukovsky" gas boilers may end there: you will need to completely replace the burned-out automation for the boiler.

It is better to connect all sensors with "correct" data that are used in the operation of the boiler. And in order to avoid surges, use a voltage stabilizer for a gas boiler. In the instructions for a specific boiler, all readings will be indicated: as the next sensor is connected, it will be possible to see where the system "sags".

For example, if you need to check how the voltage is supplied to the gas valve, first a board test is carried out, taking into account the operation of the controllers. Then you should check the sensors of the safety groups for a break in the contact. After that, the board is given a job task: to light up the boiler. The pump is switched on sequentially, then it is controlled how the liquid or antifreeze circulates. When the turbine is turned on, it will be possible to see if there is a false flame. Only then can voltage be applied to the board. If the unit is malfunctioning, then the repair of vaillant or baxi gas boilers may not end there.

Training in the repair of gas boilers in the field of setting up automation (in particular, control boards) lasts more than one week. This is due to the fact that the faulty operation of the boiler can cost its owner the life: therefore, the work of a specialist is akin to the work of a doctor who is responsible for the existence of his patient.

A modern gas boiler is a complex system, the main danger in case of malfunction is the use of explosive fuel, gas. To control the operation of a heating double-circuit or single-circuit heating unit, an automatic system is included in the boiler system that maintains optimal operation.Therefore, repair and maintenance of gas boilers is carried out only by specialists, although some components of the system can be replaced independently.If you smell gas or smoke in the room, you can only completely turn off the boiler, ventilate and leave the room by going to the next room. Repair of gas boilers baxi or others must be carried out by a specialist who must be called immediately.In the event of a breakdown of the combustion sensor or the supply gas pipe, the device must be turned off, the boiler must be allowed to cool down, and all gas valves must be shut off. Then it is imperative to check the room for the smell of gas! If there is a draft, the boiler can be restarted. If there is no traction, turn off everything and wait for the master: repair of gas boilers navien or Vilant is mandatory.Important! If the boiler overheats, which is a very common occurrence, then the repair of gas boilers aogv will include cleaning the heat exchanger or correcting the operation of the automation. If the overheating sensor is triggered, immediately turn off the boiler and call the foremen.Do-it-yourself gas boiler repair can only be carried out with visible and easily removable damage, as well as with contamination of the gas supply pipe. It can be rinsed with water, cleaned with a cotton swab and dried. Image - Do-it-yourself repair of a wall-mounted gas boiler

Gas boiler complex mechanism... It can be divided into 3 main parts: electronics, gas pipes and burners, heat exchange unit (pump, tank, fan). Only the last part can be repaired on your own.

Attempts to restore the first two parts, without proper skills, will lead to final breakdown boiler, gas leakage and other negative consequences.

Gas boilers rarely break... This is due to natural wear and tear equipment, or because of factory marriage... Other cases of breakdowns are necessarily associated with the following factors.

The boiler can break down due to water. At risk, first of all, there are two-circuit devices used not only for heating, but also for hot water supply.

The fact is that rust from the pipeline, other fractions, clog the thin tubes of the heat exchanger during the year.

Avoiding water quality troubles can help coarse filter... It is installed during installation per feed pipe liquids. For greater security, you can add to the system fine filter, or install a complete cleaning system.

Household appliances are resistant to power surges and shutdowns electricity. But a gas boiler is a finer piece of equipment. A power surge will cause the boiler to shut down or damage the electronics. A malfunction of the device or a power outage will lead to freezing of the heating pipes.

In order to avoid sad consequences, they establish at least one of the additional devices.

Stabilizer - a device that will solve the problem of power surges. Its size is small, it is installed both in an apartment and in a private house.

Photo 1. Electronic voltage stabilizer Resant Lux for a heating boiler. The device is wall-mounted.

Uninterruptible power system. Will equalize the input voltage. Allows the boiler to work for a while in the absence of electricity. Suitable for use both in the apartment and in the house.
Gas generator. It does not affect the stability of the network in any way, but it can save with a prolonged power outage. Used only in the private sector.

Attention! When buying a generator, check whether it really is single-phase.

Installation of complex equipment layman will entail serious consequences. In frequent cases, the following problems occur:

During installation neglected grounding... This leads to a build-up of static on the body of the device. When an electric arc occurs, the boiler automation often fails.
After installation did not release air from the system... The resulting plug will lead to rupture of the coolant pipes and damage to the pump.
Harness violations a gas boiler system, with a cast iron heat exchanger, will cause a split in an important part of the apparatus.

If the installation of the gas boiler is carried out correctly, operational problems arise only due to weather conditions... In cold winter, the desire to keep warm pushes people to use the boiler at maximum mode. The equipment withstands such conditions, but the gas system does not. A decrease in fuel pressure leads to interruptions in the operation of the apparatus. The automation starts to turn off the boiler. The problem is that this cannot be called a breakdown and it will not be possible to eliminate it.

Any malfunction of the gas boiler must be dealt with by a specialist. However, the opportunity to use the services of a master is not always there, and breakdowns are trivial... Let's consider the problems that can be solved on our own.

Usually the smell of gas appears when it leaks from the threaded connection of the supply hose... If there is a smell in the room where the boiler is installed, you need to open the window and turn off the boiler... Then follow the instructions:

Prepare the necessary things: soap solution, FUM tape, open-end wrench or adjustable wrench.
To apply mortar on all threaded connections. If bubbles begin to inflate, the leak has been found.
Close the gas valve.
Key expand the connection. Rewind on the external thread of the FUM tape and collect everything back.
Reapply solution and restart the gas supply.
If the leak has been repaired and the gas smell has disappeared, remove leftovers solution.

Attention! When it was not possible to find the leak, turn off the gas, call a specialist.

If during the operation of the boiler the sound emitted by the turbine has disappeared or has decreased - indicates a malfunction of the blowdown fan. For repair you will need: screwdriver, new bearing, cloth, grease.

Necessary turn off boiler and turn off the gas.
Remove the turbine.
With a rag to clear with turbine blades dust and carbon deposits.
Inspect Electric Coil fan for blackening. If everything is in order, move on or replace the fan.
Disassemble the fan housing. Inside the turbine shaft is installed bearing, his needs to be replaced. Some fans have sleeve instead of a bearing. In this case, her need to be lubricated.

The turbine may also not work due to undervoltage or malfunction of the control board. The first is eliminated with the help of a stabilizer, but the second only by calling a specialist.

Chimney problems arise only at boilers floor type... This is due to its size and vertical position. Hinged devices do not need to clean the chimney.

Chimney consisting from metal parts, cleaned with a metal brush. It must be disassembled and the accumulated soot removed mechanically. Whole the chimney is cleaned with special vacuum cleaners or chemicals. But for this you need to call a professional.

Photo 2. Three ways of arranging a chimney for a floor-standing gas boiler. The first option is the hardest to clean.

Boiler overheating is associated with contamination of the heat exchanger... To clean the device you will need: special hydrochloric acid solution, adjustable wrench, FUM tape, metal brush. Then follow the instructions:

Turn off the boiler, shut off gas and water.
Remove heat exchangerusing an adjustable wrench.
Clear it with a brush.
Through the pipe pour over into the heat exchanger acid solution... If foam appears, it means there is a lot of scale inside.
Pour out solution and repeat procedure.
Rinse.
Install back, beforehand wrapping all threaded connections with FUM tape.

Problems usually arise with combustion electrode. If the flame of the burner goes out after a few seconds, and the boiler gives an error, then the problem is in the combustion sensor.We turn off the boiler, turn off the gas.

To repair the electrode, you will need sandpaperwith the help of which the probe probes are cleanedwithout removing it. If the breakage remains, the sensor changes.

Exists two problemswhich lead to spontaneous boiler shutdown. The combustion sensor is broken or chimney clogged... The repair of both faults is described above in the article.

Watch the video, which tells about the malfunctions that occur during the operation of the boiler.

Most boiler breakdowns are repaired on their own, but this does not mean that you need to neglect the help of a specialist. Gas equipment is potentially life-threatening.

And also do not forget about maintenance... Cleaning the heat exchanger and chimney will save you from possible breakdowns.

Modern gas boilers are quite sophisticated technological equipment. With proper care and proper handling, the gas boiler will serve for a long time without any interruptions. However, even the most expensive and functional equipment has its own resource, after the exhaustion of which all sorts of malfunctions begin to appear.

DIY gas boiler repair

Knowing the main causes of malfunctions and the procedure for eliminating them, you can repair your gas boiler with your own hands. This is a very painstaking, responsible, but in most cases relatively easy job.

Content of step-by-step instructions:

First of all, it is necessary to establish why any malfunctions may occur in the operation of gas heating boilers. A number of different factors can lead to problems.

Modern gas boilers are equipped with various automation equipment. These funds, in turn, are powered by electricity. And, despite the fact that the 21st century is already in the yard and systems for the use of alternative energy sources are being actively developed around the world, the problem of stability of power grids remains relevant for many regions, especially for remote villages and all kinds of summer cottages.

A sudden power outage or a strong surge in electricity is one of the main enemies of any modern gas boiler.

To avoid all the accompanying troubles, buy a quality stabilizer in advance. Do not spare money to buy this device - there is little sense from cheap models, so it is better to immediately allocate funds to purchase a good stabilizer from a well-known manufacturer. Be sure that in the event of a breakdown of the automation, you will spend much more money on its repair and replacement.

At home, wall-mounted models of gas boilers are often used. Such devices are simultaneously responsible for both space heating and hot water preparation.

The design of wall-hung boilers includes a flow-through heat exchanger. Low-quality hard water with various impurities is the main enemy of the heat exchanger of a gas boiler. At the same time, under the influence of low-quality water, the heat exchanger can fail in just one season.

Install special filters to prevent such damage. The best option is a complete water purification system. With it, your boiler will work as long as possible, and using purified water is much safer for health.

Any knowledgeable person will tell you: only qualified specialists should be engaged in the installation and piping of gas heating equipment.

Even the slightest mistakes at the stages of installation and connection of equipment can lead to irreversible consequences. For example, an incorrectly executed piping in the case of a cast-iron gas boiler more powerful than 50 kW will lead to the fact that the unit will simply split at low temperatures.

If you are not an experienced gas operator, entrust the boiler installation to professionals.

Therefore, if you are not an experienced gas operator, entrust the installation of the boiler to professionals - this way you will save yourself from many problems in the future.

Unfavorable weather conditions can also lead to many different problems. In frosty winters, people turn on the heating at almost full capacity. This leads to a significant decrease in pressure in the gas pipeline system. As a result, boilers cannot fully realize their potential.

You will not be able to solve this problem on your own - you still cannot explain to your neighbors that by their actions they only aggravate the situation. As a solution to the problem, you can install an additional boiler that runs on a different fuel.

Automatic solid fuel coal-fired boiler with hopper

A modern gas boiler is a complex and potentially dangerous system. The main danger of such units is the risk of a gas explosion in the event of improper handling of the equipment or untimely elimination of various malfunctions.

Various kinds of automation are responsible for maintaining the operation of the gas boiler at an optimal level. An inexperienced user is often unable to understand its device. Therefore, it is better to immediately invite specialists to troubleshoot serious problems.

On your own, you can try to eliminate only visible damage and various contaminants that have led to the failure of the pipe, chimney and other parts of the boiler.

Typical malfunctions of gas boilers

There are a number of typical problems that you can fix yourself in most cases. Problems will also be listed, in the event of which you can only protect yourself before the arrival of a specialist.

If a distinct smell of gas or smoke appears in the room, immediately turn off the boiler and leave the room, opening it for ventilation.

Gas boiler functionality diagram

Call a professional immediately. Trying to solve the gas leak problem on your own without the necessary skills is extremely dangerous and unreasonable.

If the flame sensor or the gas supply pipe breaks down, turn off the boiler, close all gas valves and let the unit cool down completely.

Return to the area after a while to check for the smell of gas. If everything is in order with the draft, try to turn on the boiler again. If there is no thrust, immediately call a repairman.

Overheating is one of the most common problems in modern gas boilers. The reason for this may be a malfunction of the automation equipment or a clogged heat exchanger.

It is impossible to cope with the repair of automation without the appropriate knowledge.

You can also clean the heat exchanger with your own hands. The most common materials for the manufacture of heat exchangers are copper and stainless steel. There is usually no problem cleaning them, but be extremely careful anyway.

Primary heat exchanger for wall mounted gas boiler Beretta

According to the recommendations of the manufacturers, the heat exchangers must be cleaned of soot every few years (each manufacturer indicates a specific interval in the instructions for their equipment).

Primary heat exchanger (heating circuit) of the gas boiler Rinnai SMF

To clean the heat exchanger, simply remove it and clean it thoroughly with a metal brush. In the case of a copper heat exchanger, it is best to replace the brush with a metal sponge used for washing dishes.

The problematic place of fans is their bearings. If the fan of your boiler stops developing the set number of revolutions, try to eliminate the problem as soon as possible.

Fan (3311806000) for Daewoo gas boiler

To do this, remove the back of the fan, take out the stator and lubricate the bearings. Machine oil is fine for lubrication, but it is best to use a higher quality carbon compound with heat-resistant properties if possible.

Fan RLA97 (Aa10020004) for gas boiler Electrolux

Also, an interturn short circuit can lead to problems with the fan. Only a specialist can cope with the elimination of this malfunction. Return the stator for repair to replace the winding, or immediately replace the faulty unit with a new device.

Gas boiler chimney diagram

Often, excessive clogging of the coaxial chimney leads to the appearance of various malfunctions in the operation of a gas heating boiler.

Remove the chimney and thoroughly clean all of its components from soot. So you will not only return the previous level of efficiency of the unit, but also significantly increase the efficiency of the boiler.

The boiler can shut down spontaneously for several reasons. This is usually due to a defective combustion sensor. This problem, in turn, most often leads to contamination of the gas pipe.