Gas boilers are often used for home heating - comfortable and fairly economical instruments running on blue fuel. The correct operation of these devices is provided by a number of devices that follow the operation mode.

Timely adjustment of automation gas boiler Allows you to increase the efficiency of the heating device, as well as ensure reliability and safety in operation. And this, you see, pretty important moment For all users.

But how to perform adjustment and is it possible to make it on your own? Let's try together to deal with these questions. For which we consider in detail the device and the principle of operation of automation using one of the most popular models.

We will also pay attention to the issues of setting up the equipment and the main problems with which the user may encounter during the configuration and further operation of the gas boiler.

Under this definition, the system of executive and control devices aimed at maintaining the specified modes, as well as an operational response to the created freelance situations.

This is ensured safe use boilers with minimal involvement of a person in the processes occurring in the device.

The design of gas boilers includes a variety of types of automatic devices (electronic and mechanical), which are designed to maintain efficient safe operation.

All automation used for correct operation heating devicescan be divided into two fundamental groups:

• autonomous, independent of external power supply;
• devices, for which the external source of electric current is required.

Consider each group of devices in detail.

How do energy-dependent devices function?

Such systems represent complex electronic blocks, which require electricity flow.

At the same time, these devices allow you to adjust the fuel supply and the degree of heating by overlapping or opening the crane, which contributes to saving heating costs.

Using a safety valve, adjustment, distribution and overlapping of the gas flux

The products of the Italian brand EUROSIT received the greatest distribution. The most popular model is Eurosit 630, which is characterized by light functionality, compatibility with structures from various manufacturers, reliability and durability.

It is on the example of EUROSIT 630 that consider in detail the device of the automatic block.

Conclusions and useful video on the topic

On the video presented you will find brief instructions on the installation of a gas boiler equipped with automatic system Eurosit.

A modern gas boiler is a rather complicated design, which provides a lot of useful functions. The automation of most models greatly facilitates their operation, takes control of mechanisms and control over their work.

This greatly increases the level of safety when operating heating systemAnd also increases its effectiveness by selecting the optimal mode.

Do you need to adjust the automation of your gas boiler? Do you want to independently deal with this task and want to clarify some points? Feel free - ask your questions under this article, and our experts will try to help you.

Two automatic shut-off valves.

Full electrical power modulation.

If the gas supply or electricity is stopped, the spring pressure provides automatic valve closing. Adjusting the output pressure is carried out by a servo system. If the output pressure exceeds permissible pressure The modulator, the pressure adjustment valve opens, as a result of which the pressure under the main servo membrane drops, closing the main valve.

Thus, the output pressure takes the specified value. Conversely, if the output pressure is below the specified level, the pressure adjustment valve closes, as a result of which the servo pressure increases, opening the main valve. Purpose of the gas valve - feeding on the burner of such a amount of gas that is necessary for maintaining set temperature In the working boiler circuit. The gas valve control is carried out automatically from the boiler electronic board. Continuous modulation 1-37 MBAR (modulator in the artiform position).

Measures of resistance coils.

Valve SIT_845_SIGMA 0.845.070.

0063As4831 This is not a valve model, it is PIN, alphanumeric code identifies the compliance of the product with existing standards certified by accredited organicization.

Identification code (0.845.070)

Gas pressure setting range at the valve output (modulator axis in a horizontal position):

Operating principle.

Sit 845 Sigma has two shut-off electromagnetic valves.

When power is applied to the coil (EV1) opens first gas valve.

When power is applied to the coil (EV2), the second valve and the gas flow passes into the servo system. The pressure under the main servo membrane increases, resulting in a servo valve.

If the gas supply or electricity is stopped, the spring pressure provides automatic valve closing. Adjusting the output pressure is carried out by a servo system. If the output pressure exceeds the allowable pressure of the modulator, the pressure adjustment valve opens, as a result of which the pressure under the main servo membrane drops, closing the main valve. Thus, the output pressure takes the specified value. Conversely, if the output pressure is below the specified level, the pressure adjustment valve closes, as a result of which the servo pressure increases, opening the main valve.

Gas valve operation.

In the off state (winding of the work valves (K1I K2) and the modulation valve (km) - de-energized) valves are in the position shown in Figure No. 1. The gas through the gas valve does not pass, while on the fitting (2) it is possible to measure pressure in gas Highway.

When the gas valve is turned on, the power supply (220V) is supplied to the winding of the working valves K1 and K2, the valve opens and the gas begins to pass through the gas valve on the boiler burner nozzles. In this case, the amount of gas passing through the gas valve and gas pressure on the nozzles will depend on the status of the modulation valve km. The pressure membrane K3 pressure is supplied: - into the lower cavity - through open valve K2, - in the upper cavity - through the modulation valve km.

Figure 2 shows the state of the gas valve in the minimum gas duct mode. A minimum voltage is supplied to the CM modulation valve coil, the modulation valve is maximally open. In this case, the ratio of pressure in the lower and upper cavities of the K3 valve is such that the valve over the saddle is slightly raised, the duct and gas pressure at the outlet of the gas valve is minimal.

Figure # 3 shows the state of the gas valve in the maximum gas duct mode. The maximum voltage is supplied to the CM modulation valve coil, the modulation valve is maximally closed. In this case, the ratio of pressure in the lower and upper cavities of the K3 valve is such that the valve over the saddle is raised the maximum, the duct and the gas pressure at the outlet of the gas valve is maximal.

With the help of supplying voltage modulation in the range from the minimum value to the maximum electronic board, it makes smooth adjustment of the gas pressure at the outlet of the gas valve and, therefore, on the injectors of the burner, which achieves the maintenance of a given working fluid temperature (coolant or sanitary water) working in this The moment of the contour (heating or DHW system). The range of movement of the modulation coil surface under the influence of voltage supplied from the electronic board is usually wider than the range that is necessary when the boiler is running.

To install the necessary maximum and minimum gas pressure values \u200b\u200bon the modulation coil, there are mechanical adjustable rebel movement limiters. Structurally, they are made in the form of nuts and screws. Nut limits the closing of the valve, i.e. maximum gas pressure; The screw limits the opening of the valve, i.e. Minimum gas pressure. The adjustment element is closed with a protective plastic cap, which is removed during the adjustment, after the end of the work, the cap must be put in place and sesso.

Adjusting the output pressure.

All adjustments must be made on the basis of the specific characteristics of the unit. Check the input and output pressure using the gas pressure dimensions. After checking, thoroughly stop the fitting with the corresponding screws. Recommended expansion moment: 1.0 nm. Disconnect the pressure regulator tube on the "VENT" fitting (if it is). Remove the plastic cap of the modulator.

Maximum pressure: the power of the modulator at the maximum specified vilitus. Split nut a to increase the output pressure and unscrew to reduce. Using 10 mm wrench.

Minimum pressure: Dischal the power supply modulator. Holding a nut A in a fixed position, screw the screw b to increase pressure or turn off to reduce pressure. Connect the pressure regulator tube on the VENT fitting (if it is).

To ensure the sustainable operation of the modulator, it is necessary to return the plasomatic cap to its input position.

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Private construction is gaining strength, and with it there is a growing demand for modern equipment of heat supply, smoothly providing consumers with thermal energy for heating at home and water heating for household needs.

A gas boiler - central Gas Heating Systemcreated for such purposes. Being one of the most economical devices, it, nevertheless needs to be correctly configured, ensuring proper fuel consumption and reliability of its operation.

Equipment selection and configuration

Issues of exploitation of the system of heat supply of a private house, unlike centralized systems, the entirely falls on it owners. And one of the tasks that you have to decide is the question of the correct selection of gas equipment.

Experience in operating systems shows that the correctly chosen boiler should work not less than 30% Heating period.

The average value of the boiler power consumed per square meter of heated room ( with ceiling heights up to 3 meters) is About 100 watts.

Practice shows that installing a boiler or burner too high power can create many problemsrelated to overpowering gas, difficulty selection of temperature in heated premises and reliability of the system.

After selecting and installing the heat supply system, as well as each time it starts the following adjustments are held:

1. Full Warming up the boiler.
2. Full Opening SHIBERAchimney.
3. Flame exhibition burner maximum power(The flames should consist of blue and yellow segments).
4. Overlapping gas supply crane on deletion yellow segment of the flame.
5. Check automatics of security and operating modesboiler.

Important!Setting the right flame color gas burner It has key value for full combustion Gas Without the formation of soot, settling on the walls of the furnace and chimney, which reduces the efficiency of the system and increasing gas fuel consumption.

How to adjust the power of the burner

If the burner is much superior to the power boiler, she can lack, air intake through the seats and from the supervision. Flame burning in this case becomes unfinished, and the flame burner turns yellow.

Incomplete combustion of gas fuel causes Skipping of firebox and chimney combustion products, and part of the energy is dissipated into the surrounding space, increasing fuel consumption.

Photo 1. The shut-off crane helps adjust the supply of gas in case of problems with the boiler.

In this case, the power of the burner can be reduced cover the gas supply craneon omit.

However, if the power is constantly installed on minimum value This will reduce the efficiency of the system and the system adjustment range.

Reference!When choosing a gas burner, besides dimensions of the combustion chamber and torch geometry, it is important to take into account the conformity of passport values minimum and maximum powerand methods of its regulation, as well as gas consumption torch.

High consumption of gas

The cause of high gas flow is often inefficient work of heat exchangerboiler. The coolant passing through the heat exchanger carries with itself particles of scale and salts, which can be deposited on the inner walls of the heat exchanger, reducing its thermal conductivity and increasing the amount of fuel required for heating.

Usually the problem with the heat exchanger manifests itself Characteristic noiseemanating from a working boiler resembling a whistle or bouffaging similar to boiling kettle.

In this case, it will be necessary manual cleaning Heat exchanger or it flushing with special makeup.

The cause of high gas flow can also be it reduced caloriecaused by its insufficient shower than a gas distributor company. The rate of low heat combustion of household gas should be at least 7600 kcal per cubic meterIn practice, the caloric content of gas can decrease up to 4000 kcal.

Important!When purchasing gas equipment, it is important to take into account composition and minimum gas pressure In a specific gas supply system, equipment worked steadily.

You will also be interested:

Lack of air for burning

Lack of air for combustion of gas can be caused fault of the supervision system. In this case, you need to check settings electronic regulator Temperature and superior as well throttle.

If the burner is lit with cotton, it may mean that the openings of the primary air supply Closed or clogged with dust.

In this case, it is necessary to adjust the flame air regulators Or clean the holes from dust.

If the flame has a significant yellow segment, it may be caused defect burner.In this case, the power of the burner can be reduced by the cover of the gas supply crane on the omission.

Increased pressure: gas supply crane adjustment

When working, the burner may occur situations:

• flame color burner red-orange or red;
• the flame burner is knocked out beyond the space allotted by him;
• flame burner on light upand immediately or after a while gasnet, or lights up with cotton.

These signs may indicate increased gas pressure in the gas supply system, since in winter, the gas supplier often increases the regulatory pressure from 200-220 mm waters. Art. to pressure 280 mm of water. Art.

In this case, it is possible to lower the gas pressure:

• cover the gas supply crane on omit;
• installation specified in the passport on the burner throttle washer;
• installation gas pressure regulator.

Important!By acquiring gas equipment, especially import, it is important to consider it work in a specific gas supply system, so on. Each manufacturer produces equipment with its values working optimal and minimum gas pressure.

Weak boiler thrust

Weak thrust can appear for various reasons. If the burner lights up and immediately goes out, or lights up with cotton, it may mean presence of a large amount of soot in the boiler and or in chimney interfering with the creation of thrust.

In this case, it is necessary to check the presence of thrust in the chimney and in the boiler through an observation window, and, if necessary, clean them from soot yourself or contacting a special service.

Weak thrust can also occur when changing the weather, not allowing gases to leave the furnace, and flow into the boiler to the boiler.

In this case, it is necessary reduce the power of the burner cover the gas supply crane on omund, as well as organize sufficient ventilation indoors.

Reference!With weak boiler, it is also important to clarify the design of its chimney, it must comply with the rules SNiP 2.04.05-91and DBNV.2.5-20-2001.

Tact

If the boiler power exceeds the size of heated premises, it can lead to frequent disconnection and inclusion of boileron heating, or his tact.

The frequency of the tact can Reach 2-3 minutes.

To avoid tact, it is necessary.

To date, gas boilers are heating - the most common dwelling devices. Right choice The boiler in power and on other necessary criteria will help to avoid many problems in the future.

The following functionality is usually considered criteria for choice:

For energy-dependent boilers, electricity is needed and the presence of natural gas under certain pressure. If there is no one of these two components, the boiler will not turn on. Know how to turn on the gas boiler is obliged to each owner, but for this you need a clear understanding of the processes that occur when the gas boiler is started. For example, a non-volatile boiler is equipped with a 630 Eurosit mechanical controller.

How the gas boiler is launched with this equipment, and what happens at each subsequent step, consider the points:

Possible malfunctions when starting the boiler and the methods of eliminating

Like any technical device, the gas boiler can break. If an electronic controller is installed in the boiler, only a specialist who has experience, knowledge and knowledge can eliminate its malfunctions. required devices. But sometimes the gas boiler does not work for a very simple reason, which can easily eliminate the owner. If the gas boiler does not turn on, possible causes and elimination methods will be discussed below.

Filler does not turn on

If the stall does not turn on, then possible reason - Pollution of the insulator, through which the high-voltage wire passes through the boiler body into the combustion chamber. Such a malfunction is eliminated by the wiping of the pure rag of the insulator. If the contamination is very strong, then you can apply any solvent and then wipe dry. Sometimes inside the combustion chamber, raid from soot is formed between the candle and the boiler body, soot is carbon, which is a conductor and prevents the creation of a spark. Such a malfunction is eliminated with a slight tapping on the pipe supply supplying gas to the burner.

The spinner turned on, but when turning the control knob, there is no gas supply to the main burner. Of course, the reasons for such a malfunction can be a thermocouple or solenoid valve, thermostat malfunction or feed valve. To diagnose such malfunctions, you need practical experience and interference in the automation unit, which directly prohibits the instruction. But most often, especially before the start of the new season, the cause is a cocoon that Skil Spider at the site of joining the main pipe from the controller to the main burner. Gently unscrew the nut and remove the spider socket.

Water is not heated

If the water in the DHW circuit heats badly, this indicates that it is possible in the heat exchanger on the walls too many sediments. To eliminate such a malfunction, the outline of the DHW should be washed hot water With the addition of substances that dissolve mineral sediments on the walls. For boilers with electronic control system Bad water heating in gVS system It may be associated with electronics faults or a duct sensor. Repair is quite complex and is available only to specialists who understand what and how to do.

"Boiler Tact"

When choosing a boiler too high power, a phenomenon may occur, which is called "boiler tact".

If the "tact" occurs, a gas boiler is too often included due to too intensive heating of the coolant.

Know how to customize the gas boiler in a similar case is very important. After all, when "boiler tact" increases gas consumption, frequent operation of automation leads to premature wear. To eliminate this unpleasant phenomenon, it is enough to reduce gas supply to the burner. Carefully studying the instructions, we find a gas valve, the adjustment method and reduce gas supply to the burner.

In most boilers, gas adjustment is carried out by rotating adjusting screws on the gas valve. But in some modern boilers, it is possible to adjust the gas supply to the burners only from the control panel. In the instructions on the gas boilers of malfunctions and their elimination methods are usually listed in a separate section.

Features of the operation of gas boilers with electronics

Modern high-tech boilers are equipped with complex electronics. Information about the current status of the product and the problems arising from the error code is displayed.

Electronic components are very sensitive to unstable supply voltage.

Take as an example a reliable gas boiler that the diagnostic system displays the diagnostic system in the form of a specific code. He has the most common mistake - failure of the control board. Such a malfunction occurs in 95% of all cases according to repair professionals.

Repairs electronic systems Control is possible only in specialized workshops. Therefore, it is better to refrain from buying a high-tech boiler in the absence of service in the region. If such an aggregate is purchased, then to eliminate the possibility of failure of complex electronics, it is necessary to take measures in advance - to establish voltage stabilizers or.

If earlier the boiler adjustment occurred simply - turned the valve on the burner and increased or reduced the head pressure, then modern automation does everything. But it happens in it, requiring automation adjustments. Consider how modern gas boiler functions.

Description and Functions of the Gas Boiler

A simple heater consists of a heat exchanger chamber, gas burners and ventilation. The work of all these systems is controlled by automation.

The gas boiler safety device has a multistage protection system:

1. With a ignition, it is necessary not only to rotate the gas supply handle, but also hold it for a while until the solenoid valve is triggered (6). This prevents accidental gas leakage in the device.
2. The reverse thrust sensor (8) responds to the flow of fire from the burner to the room. This can occur with sharp wind gusts, clogged chimney and malfunction of the burner. Thanks to this controller, the flow of gas in the occurrence of the reverse thrust is automatically turned off and people cannot be pulled out with carbon monoxide.
3. The temperature sensor (7) protects the boiler from overheating, including gas as needed. Thanks to it, the temperature in the heating system is maintained on the mark that is specified by the user.

Management Systems B. gas bolery There are autonomous or energy-dependent. The second requires connecting to the electrical network.

Adjusting the gas boiler

If the automation began to work incorrectly, there were failures in its operation, then you need to find the cause and or adjust the control system, or replace the faulty items.

IMPORTANT! Do not disregard without attention, even if they occur only occasionally. It can cost you and your loved ones.

Consider the most popular problems that can be eliminated independently:

• "The boiler fell wonderfully in the fall, and in winter it is cold in the house." It is essentially not a breakdown, but just the need to regulate the heating temperature. There is a thermostat in the housing of any gas boiler. It may look like a rotating handle with a scale, buttons with a temperature screen, a scale with a slider on it. It is enough to establish a greater value of heating, as at home will immediately become warmer.
• "When the ignition does not work the solenoid valve, how many do not give to the handle." The most common breakdown, requiring the replacement of the valve.
• "The boiler burns fine, but after a while there is a cotton and everything turns off." As a rule, here we are dealing with the operation of automation. But what is the reason for "cotton" will have to find out. It is best to invite specialists.

IMPORTANT! Do not glue a faulty em valve and do not encourage it! It is responsible for supplying gas, and if it is fixed, the rest of the automation will be useless. When the burner is resettled or during the reverse thrust, you risk just suffocating.

Conclusion

In conclusion, it should be recalled that all gas equipment is a source of increased danger. You should not unwind anything in the boiler management system yourself, interfere with the operation of controllers, burners and sensors. The gas is invisible and not totable, and it is much more difficult to detect his leakage than faulty wiring or leaking water pipes. If you need to install, replace, repair or adjust the gas boiler, it is better to invite specialists.