For heating and hot water supply of apartments and small private houses with one bathroom, double-circuit units are usually used. gas boilers.

In large houses with several sanitary facilities For heating, single-circuit gas boilers with storage boiler for cooking hot water. This system provides more comfortable use hot water in the house.

In an apartment in a new building with apartment heating A Protherm Gepard 23 MTV double-circuit gas boiler was installed. Next, let's look at setting the boiler power using this apartment as an example.

Gas boilers of the Protherm Gepard series are almost a complete analogue (a simpler version) of the Protherm Panther boilers. This article describes in detail the adjustment and power settings of gas boilers Protherm Gepard and Protherm Panther.

It should be noted that the company that produces Protherm series boilers at its other plant produces gas boilers of the famous Vaillant brand. Gas Vaillant boilers are in a higher price category due to the use of more quality materials for the manufacture of heat exchangers. But according to the design, other parts used, settings service menu Vaillant brand gas boilers are very similar to Protherm boilers.

The principles of adjustment and power settings described in this article Suitable for many other gas boilers brands and manufacturers.

Internal structure of a dual-circuit gas boiler Protherm Gepard 23 MTV and Panther 25,30 KTV (Panther)

Reasons for clocking (pulse operation) of the boiler in heating mode

The operating manual states that the useful thermal power of the Protherm Gepard 23 MTV boiler is regulated within the range from a maximum of 23.3 kW. to minimum 8.5 kW. The factory setting for power in heating mode is set to 15 kW.

The total area of ​​the apartment heated by the boiler is 60 m 2. To heat the apartment, heating devices (radiators) with a total maximum thermal power of 4 are installed kW.

How to determine the maximum thermal power of a heating circuit in a house or apartment

How to determine the maximum thermal power heating circuit? On the websites of radiator manufacturers and sellers we find the thermal power of each radiator installed in the house. In manufacturers' catalogs, the heat transfer of radiators is presented in 2 modes: 1) 90/70/20 degrees and 2) 75/65/20. You need to look at the heat transfer according to the “75-65/20” parameter. The sum of the powers of all radiators connected to the boiler will be equal to the maximum thermal power of the heating circuit. For the apartment from our example, this value turned out to be 4 kW.

The installers installed the boiler and put it into operation, “forgetting” to do commissioning works. The boiler was started to work with the factory settings maximum power in heating mode 15 kW.

Obviously, a heating system with a maximum power of only 4 kW., will not be able to accept what is produced by the boiler thermal energy power 15 kW. The power of the boiler burner is controlled automatically within certain limits. But there is a huge difference in the power of the boiler and heating devices leads to the fact that the boiler automation is not able to bring the boiler power in line with the needs of the heating system without additional settings.

The large difference between the power of a gas boiler and the power of heating devices, among other disadvantages, leads to cyclical operation of the boiler.

By the way, about other disadvantages of an overly powerful boiler. The service instructions for the Protherm Gepard 23 MTV boiler indicate its efficiency in heating mode: 93.2% at maximum thermal power (23.3 kW.) and 79.4% when operating at minimum power (8.5 kW.) Imagine how the efficiency will further decrease if this boiler has to work with a heating system with a power of 4 kW. Please note that a double-circuit boiler operates in heating mode most of the time throughout the year, with minimal power. At least 1/4 of the gas spent on heating will literally fly uselessly down the chimney. This will be the price to pay for installing overly powerful heating and hot water equipment in the house.

Tips on the topic “How to increase the efficiency of a gas boiler” can be found if you read this article to the end.

Excessive cyclicality, impulsiveness of work or, as people say, “clocking the boiler” manifests itself in the fact that the boiler burner, after being turned on, quickly turns off when the set temperature is reached in the straight pipe at the outlet of the boiler. But the radiators remain not heated to this set temperature - the water heated in the boiler simply does not have time to reach the heating devices. That is, the boiler produces more thermal energy per unit time than a less powerful heating circuit is capable of receiving. Therefore, the temperature of the water leaving the boiler rises quickly and it turns off earlier, without having time to heat the radiators.

After a short time, the circulation pump supplies the heat exchanger with the remaining cool water from the heating system return pipe and the burner turns on again. Then everything repeats again.

A high-power heating system has an increased pipe diameter and radiator volume, which means less hydraulic resistance. IN large systems the water does not flow exactly the same, it flows faster, with a higher flow rate (liters per second). During the rapid passage through the boiler heat exchanger, each liter of water only manages to heat up by 15-20 degrees o C. And in order to heat this liter to a given temperature, the water in the heating system must pass through the heat exchanger several times.

For heating systems low power the pipes are thinner, the radiators are smaller, the hydraulic resistance is higher and the water flows slower. If you heat it slowly with the same power flowing water, then the water entering the heat exchanger immediately, at one time, will heat up by 40-60 degrees o C, immediately before maximum temperature, and the boiler will turn off. And the water remaining in the system, which has not reached the boiler, will remain cold until the next clock cycle. This is what happens in the boiler if its power is not adapted to the heating system.

The size of the flame (burner power) in the boiler is controlled electronically using a complex algorithm, which takes into account the time from the start of the burner, the temperature value, the rate of temperature change in the heating circuit, and the temperature difference in the forward and return pipes. I don’t know all the intricacies of the regulation algorithm, but automation, without additional service settings, does not provide normal work boiler at a power below the minimum, which is indicated in the technical specifications.

In a properly configured heating system, the temperature difference in the forward and return pipes should be no more than 20 o C.

Clocking reduces the service life of the boiler and increases gas consumption

Any person, even without being a mechanic or electrician, knows that the most difficult operating mode for equipment is the moment of startup, turning on mechanical and electrical equipment. During the start-up period, the greatest wear is observed, and failures most often occur. An increase in the number of starts as a result of cyclicity most of all eats up the service life of very expensive parts of the boiler - gas and three-way valves, circulation pump, exhaust gas fan.

For ignition at the moment of starting, the burner is supplied maximum amount gas Part of the gas, before the flame appears, literally flies into the pipe. Constantly “re-igniting” the burner further increases gas consumption and reduces the efficiency of the boiler.

Some cyclical operation of a gas boiler is provided for by its normal operating mode. For example, regulating the temperature in a room without a thermostat or using a two-position thermostat occurs by periodically turning the boiler burner on and off.

The task of regulating boiler power is to eliminate excessive cycling - clocking caused by a lack of adaptation of the boiler settings to the heating system.

To eliminate boiler clocking, it is necessary to equalize the power of the boiler and the heating circuit

You can do this in two ways:

1. Reduce the boiler burner power to a level at which the automation can ensure normal operation of the boiler with the connected heating system.
2. Increase the maximum power of the heating circuit by installing additional radiators or replacing existing ones with more powerful ones.

You can use both methods at once. Reduce the difference between the power of the boiler and the heating circuit by replacing and installing more powerful radiators. And then, compensate for the remaining difference by adjusting the boiler power.

The second method is more expensive, but sometimes you have to choose it. The fact is that, in order to save money, builders often install radiators in the house without a reserve of thermal power. As a result, to maintain indoors required temperature, in cold weather it is necessary to supply heating water to the radiators at a maximum temperature of more than 75 o C. At this temperature, decomposition (combustion) of organic dust particles occurs on the radiators and appears in the rooms. bad smell. Besides, heat coolant reduces the service life of polymer pipes and other parts of the heating system made of plastic and rubber.

Sometimes, the power of radiators is simply not enough to maintain the required thermal regime even at maximum temperature heating water. Before adjusting the boiler power, I recommend determining the need, and, if necessary, increasing the power of the radiators by 30 - 100%, at least in the coldest rooms.

Top - standard temperature regime radiator operation in systems with plastic pipes. Below are the maximum radiator temperatures for comfortable, soft heat. To switch from standard mode to soft heat, the power (size) of the radiator must be increased by approximately 2 times.

The main advantage low temperature heating is the possibility of using modern technologies. It's about O condensing boilers, solar collectors and heat pumps. They require that the system have low temperature heating water.

When replacing radiators, it is necessary to take into account that the built-in boiler expansion tank designed for a volume of water in the heating system of no more than 50 liters for the Gepard boiler, and 70 liters for the Panther. If the amount of water as a result of installing new radiators turns out to be greater, then it is necessary to install an external expansion tank.

The external expansion tank is connected to the return line of the heating system closer to the boiler. In this case, it is better to disable the built-in expansion tank.

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Heating radiators

How to regulate the burner power of a gas boiler

The useful thermal output of a gas boiler can be reduced by reducing the gas supply to the burner. They do this by changing the gas valve settings.

Gas valve Honeywell boiler Protherm Gepard (Panther) - operating diagram.
EVS1— safety electric valve; EVS2— electric drive of the control valve; Vm— a stepper motor controls gas flow through a control valve.

IN modern boilers"Protherm Gepard" and "Protherm Panther" basic settings gas valve from Honeywell changed using a stepper motor. The stepper motor is controlled from the boiler control panel through the service menu.

It should be noted that the manufacturer in some versions of gas boilers Protherm Gepard (Panther), Vaillant, instead of a Honeywell gas valve, installs gas valve SIT 845 Sigma. The maximum and minimum burner power settings for this valve are made by rotating the adjusting screws located on the valve body. Read about the features of adjusting the SIT gas valve below, on page 2.

The electromechanical devices of the boiler (electric valves, stepper and conventional electric motors, sensors) are controlled by a microprocessor of the electronic control board in accordance with the programmed program. The boiler operating program settings can be changed on the control panel using two menus - a public user menu and a hidden service menu.

Access to the service menu of the Protherm Gepard boiler

The Protherm Gepard boiler is controlled from the control panel through a publicly accessible user menu. How the owner can operate the boiler is described in the operating manual.

On the control panel you can call up another, hidden menu - a service menu intended for specialists. The service menu becomes available on the display screen after entering the code.

Press and hold the mode button (1) for about 7 seconds; the display will change - a number will appear 0 . — Using buttons + or — (2), enter code, number 35 . — Confirm entering the code by pressing the mode button (1). After this, the display will show the first line of the menu in the form of symbols alternating on the screen: d. 0.

— Using buttons + or — d.**.

- Press the "mode" button to move from the menu bar number designation " d.**» to the parameter value (the “=” symbol and the parameter value are alternately displayed on the display). — Change the values ​​of the displayed parameters using the + or — buttons (3) on the boiler panel. — 3 seconds after the change, the new values ​​are automatically confirmed. To return the display to its original state, press the “mode” button for 3 seconds. After 15 minutes of inactivity, the display returns to operating mode on its own.

Access to the service menu of the Protherm Panther boiler (Panther)

The control panel of the Protherm Panther boiler has some differences from the Protherm Gepard boiler. The boiler control panel has a hidden service menu, which becomes accessible when the code is entered.

To access the service menu of the Protherm Panther boiler, you must: Press and hold the mode button (1) for about 7 seconds; The display appearance will change. - By using buttons on the left + or — (2), enter the access code into the service menu - number 35 in the left half of the display. — Confirm entering the code by pressing the mode button (1).

After this, the display will show the 1st line of the menu in the form of symbols d.00 with the menu line number in the left half of the display, and the numeric value of the line parameter in the right half of the display. - By using buttons on the left + or — (2), enter the number with the required menu bar number: d.**.

To change the value of an option in the menu bar:— Change the values ​​of the displayed line parameters using buttons on the right + or — (3) on the boiler panel. — 3 seconds after the change, the new values ​​are automatically confirmed. To return the display to its original state, press the “mode” button for 3 seconds. After 15 minutes of inactivity, the display returns to operating mode on its own.

The service menu commands and the procedure for setting the power of the Protherm Panther boiler are similar to those given for the Protherm Gepard boiler.

Description of some service menu commands

Line d.00— maximum heating output (net power) of the boiler in heating mode, kW. The range of possible parameter values ​​is from =9 to =23, factory setting = 15 (for Protherm Gepard).

Line d.01— run-on time of the circulation pump in heating mode, min., select a value between 2 and 60 min. Factory setting =5

Line d.02— Time delay after operation in heating mode for anti-cycling, min. Protects against frequent switching on and off of the burner in heating mode (this function is not applicable in DHW mode). Choose a value between 2 and 60 min. Factory setting = 20 minutes. This delay (called anti-cycling time) prevents a rapid restart in heating mode after the burner has stopped due to the set temperature or the room thermostat TA. It depends on the coolant temperature setting: - at 80 °C, it is set to 1 minute and is not adjustable. - at 20 °C, it can be adjusted from 1 to 60 minutes using the parameter d.02 in the service menu. At intermediate temperatures, between 20 °C and 80 °C, the delay value changes proportionally in the range from 1 min. up to set in d.02 parameter.

Dependence of anti-cycling time on the parameter value setting in the line d.02 and heating temperatures

Line d.18— operating mode of the circulation pump; Operating mode options: = 0 - with burner: the pump operates together with the burner. =1 - continuous; with RT thermostat: the pump is activated by the command of the room thermostat. =2 - constantly in winter: the pump runs all the time while the boiler is in WINTER mode. Factory setting =1.

Line d.19— speed of the circulation pump; Operating mode options: =0 - burner is running; speed in heating mode is selected automatically, maximum - in DHW mode, minimum - if the burner is turned off = 1 - min. speed in heating mode, max. – in DHW mode =2 – automatically selected in heating mode, max. – in DHW mode =3 — max. speed in heating and hot water mode. Factory setting =2. Each time the burner is started in heating mode, the pump is switched on at a limited speed for at least 30 seconds. If the temperature difference between supply and return reaches 20 OK, the pump switches to maximum speed before turning off the burner (even if the temperature difference has decreased). The same cycle occurs at the next ignition.

Line d.35— shows the position of the 3-way valve, heating/DHW (read only); =99 - hot water =0 - heating =40 - middle position

Line d.36— shows on the display the hot water consumption measured by the flow sensor, l/min. when dispensing hot water (read only)

Line d.40- shows on the display the temperature of the water leaving the boiler in the direct pipeline of the heating system, o C. (only for reading)

Line d.41- shows on the display the temperature of the water at the inlet to the boiler, in the return pipe of the heating system, o C. (only for reading)

Line d.44 — Ionization current control. This parameter informs that ionization current is in the optimal range. The displayed value does not represent the actual current value! Range of values: 0 – 10. In the range: =0 – 4 – ionization current is sufficient – ​​flame is present; =4 – 8 – ionization current is slightly below a sufficient level – there is a possibility of flame loss; =8 – 10 – ionization current does not correspond to a sufficient level – there is no flame.

Line d.52— setting the minimum power of the boiler burner by shifting the minimum position of the Honeywell gas valve stepper motor. The range of possible parameter values ​​is from =0 to =99. How less value parameter, the weaker the intensity of gas combustion.

Line d.53— setting the maximum power of the boiler burner by shifting the maximum position of the Honeywell gas valve stepper motor. The range of possible parameter values ​​is from =0 to =-99 (negative values ​​with a minus sign). The lower the parameter value, the weaker the intensity of gas combustion.

Line d.62- lowering the heating temperature at night. Setting range 0 - 30 o C. If you connect a timer or even a manual switch to the boiler, you can switch the boiler into two modes: day or night. In night mode, the heating temperature setting is reduced by the amount set in d.62. Those. During the day, the temperature of the heating water and the temperature in the house are higher, and at night lower. You can set it the other way around.

Line d.67 — Displays the time between boiler starts. This parameter displays the cooling time in minutes before the boiler is turned on again. The countdown of minutes begins at the moment the boiler turns off due to exceeding the maximum set operating temperature of the heating water on the boiler control panel and the room regulator is permanently closed. This parameter is important for the anti-cycling function of the boiler, when the cooling time until the next switch-on is calculated based on the set boiler heating water temperature and the set anti-cycling time interval in line d.02.

Line d.70 — Setting the position of the three-way valve. In this mode, it is possible to set the position of the three-way valve, regardless of the heating requirements for a particular circuit. Three-way valve position: =0 - the valve is controlled based on standard requirements from the control system; =1 - three-way valve is set to the middle position to empty the boiler (both heating and domestic hot water); =2 - the three-way valve is set to the heating position of the extract air.

Line d.71— Setting the maximum temperature in the heating system. Select a value from =45 to =80 °C. Factory setting =75 °C.

Line d.88 — Water hammer protection in the wiring cold water(for KTV and KOV boilers). The ability to change the parameter eliminates the reaction to water hammer, which in some cases occurs in cold water pipelines. For example, at the moment of closing an automatic valve in cistern toilet (or washing machine, or dishwasher) a pressure surge (water hammer) may occur in the water supply pipes. The consequence of this may be false alarm flow sensor (turbine) tap water, which will lead to short-term unwanted activation of the DHW mode of the boiler. Factory setting =0 - activation of the ignition process for heating tap water at a flow rate of 1.5 l/min. Changing the parameter to value =1 - activation of the ignition process for heating tap water at a flow rate of 3.7 l/min. In this case, the flow duration should be at least 2 seconds.

Line d.90 — Identification of the connected room sensor. Using this parameter, it is possible to verify that the room regulator is connected correctly, or that the communication between room regulator and a boiler. Attention: this description Applies only to controllers that support eBus communication. If a conventional regulator with a switching relay was connected, this function not possible to use. Display: =0 - the regulator is not connected or does not communicate with the boiler; =1 - the regulator is connected and there is communication between it and the boiler.

Line d.96— Setting the boiler to the parameters set at the factory. If the settings lead to incorrect operation or failures, it is possible to restore the boiler to factory settings. Setting: =0 - replacement with factory settings will not be performed; =1 - a return to factory settings will be made Note: when entering the setting of this parameter, the display always shows parameter “0”

How to eliminate boiler clocking in heating mode

Adjusting the maximum heating power of a Gepard or Panther boiler through the service menu

At the first stage in the service menu, as described above, we find the line d.0, press the “mode” button and look at the value of the boiler power parameter on the display, kW. In our example, the factory setting =15 was visible. It is necessary to set a new boiler power value equal to the power of the heating devices connected to the boiler. This setting will only work in heating mode.

If the power of the heating system corresponds to the operating range of boiler power

The maximum power of the heating system in the house may fall within the operating range of the boiler power specified in the instructions. For example, the total maximum power of radiators in a house is 11 kW. The operating power range of the Protherm Gepard 23 MTV boiler is within 8.5 - 23.3 kW.

In the service menu, as described above, find line d.0, press the “mode” button and look at the value of the boiler power parameter on the display, kW. For example, the factory setting =15 will be visible. Using the “-” button we set a new boiler power value = 11.

I recommend trying to set the boiler power to 20 - 30% less than the heating circuit power, for example, d.00 =9 kW. This power should be enough to compensate for heat losses at home, since the power of radiators is usually chosen with some reserve.

Increasing the anticycling time

On second stage, increase the anticycling time in the line d.02 service menu.

Factory setting d.02 = 20 minutes. According to the graph (see above) we determine that, for the heating water temperature specified on the display, 70 o C, restarting the burner is possible after 4 - 5 minutes, not earlier.

In line d.02 we set a new value for the anticycling time, for our example the maximum possible = 60 minutes. Line d.67 displays the time in minutes until the boiler is turned on again. Breaks in burner operation became approximately 10 minutes long. Twice as much as with the factory setting, which is still too often.

Increasing the anti-cycling time results in the burner turning on later, at a lower heating water temperature. The heat flow from the boiler to the heating circuit is reduced.

Thus, selecting the settings of the boiler power and anti-cycling time through the service menu, ensure that the cycle time between turning on the boiler burner is at least 15 minutes. That is, the boiler should be turned on no more than four times within one hour.

I note that not all brands of gas boilers have the ability to adjust the anti-cycling time. In this case, you only have to select the boiler power settings.

On some brands of gas boilers, the rotation speed (performance) of the circulation pump is set manually using a switch on the pump. To reduce the boiler clock, it is recommended to increase the pump speed.

Setting up a Gepard or Panther gas boiler for power below the minimum

At the third stage setup is in progress minimum boiler power, by an amount lower than specified in the instructions.

Such adjustment is not necessary in all cases, but only when the first and second stages do not bring the required result. As in our case, when at the first stage we use the “-” button to set a new boiler power value = 9 (the minimum possible setting corresponds to 8.5 kW.). The newly set maximum boiler heating power (8.5 kW) is still very different from the power of heating devices (4 kW).

It should be noted that adjusting the boiler power using the method described below can be useful in other cases, as it allows you to adjust the heating power boiler in accordance with the actual power of the heating circuit.

The actual power is usually less than the calculated one. Before carrying out work for setting the minimum burner power,

• necessary: Fully open thermostatic and other valves on radiators, and set to maximum temperature. Thermostat, control warm floors, set to the maximum permissible temperature so as not to overheat the floors.
• In the custom menu of the boiler, set the maximum operating temperature, which is set by the owners in the coldest weather, adding another +5 °C. Usually it is not less than 65 °C. If the owners do not remember it, or on the new boiler in the menu they set the factory setting for the maximum temperature of 75 °C. The boiler burner will have to switch off automatically at a temperature of 5 °C more, i.e. at 80 °C.
• Cool the heating circuit to a heating water temperature below 30 °C.

Next, start the burner in heating mode, select the line in the service menu d.52, press the “mode” button and see on the display the value of the gas valve stepper motor position parameter in the factory minimum power mode.

By removing the front cover of the boiler, we visually observe the size of the flame in the burner. In our example, the factory setting was displayed on the display, the number = 72, and the flame height in the burner was quite high.

Use the “-” button to set a new parameter value in the line d.52, for example =20. 3 seconds after the change, when the new value is automatically confirmed, we observe a significant decrease in the flame height in the burner. This indicates that the useful power of the boiler with specified setting will decrease greatly.

Next, observe on the display the increase in temperature in the direct heating pipeline at the outlet of the boiler. Typically, the temperature increase stops when it reaches some value less than the set value, for example 52 °C. The boiler is running, but the temperature does not increase (or changes very, very slowly). This means that a power balance has been achieved between the boiler and the heating system at this established water temperature. At this moment, we increase the parameter in line d.52 of the service menu, set a new value = 30 - the temperature begins to rise again and stops again, for example at 63 °C. Again we add the parameter value in line d.52 =35 and so select the parameter until the temperature stops at a value slightly higher than the maximum, for example 77 °C. In this way, a balance is achieved between the power of the boiler and the heating circuit at maximum operating temperature. The boiler power will be set to the minimum level required to operate with the connected heating circuit. In this case, the cyclic operation of the boiler will be minimal.

If the radiators do not warm up well in height, the temperature difference in the forward and return pipes at a maximum temperature is more than 15-20°, then increase the response pressure of the bypass valve. Read below on how to adjust the bypass valve. The water temperature in the forward and return pipelines can be seen on the display if you enter the service menu, lines d.40 and d.41.

In case of adjusting the bypass valve, the gas valve setting in line d.52 must be repeated.

In our example, the burner heated the water to a maximum temperature of 77 o C at the minimum value of the parameter in the line d.52, equal to =28 (factory setting was =72). With a lower parameter value, the burner could not heat the water to the specified temperature. And at a higher value, the burner heated the water to 80 o C and the boiler automatic switched off the combustion.

It should be noted that the method described above for adjusting the gas valve, which allows you to balance the boiler power with the power of the heating circuit through an experiment, is not included in the recommendations of the boiler manufacturer. This is the idea of ​​the author of the article, successfully implemented during setup autonomous systems heating with gas boilers.

Factory calibrated gas valve

Honeywell gas valve. 1 — fitting for measuring the gas pressure at the outlet to the burner; 2 — fitting for measuring inlet pressure.

The boiler manufacturer specifies Calibrate the minimum power on the gas valve as follows:

In line d.00 of the service menu, set parameter =9, which limits the boiler power to the minimum level specified in the instructions. Turn on the boiler in heating mode.

A pressure gauge tube is connected to the upper fitting at the gas valve outlet. Before connecting, it is necessary to unscrew the locking screw on the fitting 1-2 turns.

Call line d.52 service menu. And changing with buttons + And — string parameter value d.52, set the gas valve outlet to the minimum pressure specified in the boiler operating manual. For example, for a Gepard 23 MTV boiler, the minimum pressure in front of the burner is 1.5 mbar or 15.5 mm.water.st..

This setting will ensure the boiler operates with the minimum power specified by the manufacturer - 8.5 kW. The boiler manufacturer's service instructions do not answer the obvious question of what to do if the power of the heating circuit connected to the boiler is less.

In our example, after setting up and installing in the line d.52 parameter =28, measuring the pressure at the outlet of the gas valve in front of the burner showed a value of 4 mm.water column

Readers in the comments ask the question: “Isn’t such a significant decrease in gas pressure on the burner dangerous for the boiler?” Boilers have many different protections, but there is no protection against low gas pressure on the burner. From this we conclude that low pressure in itself is not dangerous for the boiler. It is important to ensure stable ignition and stable combustion gas, since the boilers have appropriate protection.

A home mechanic can roughly assess whether the gas valve settings correspond to the factory settings without resorting to measuring the gas pressure on the valve.

To do this, set parameter =9 in line d.00 of the menu and turn on the boiler in the minimum heating power mode. Record readings gas meter. After 15 minutes (1/4 hour), the meter readings are recorded again and the gas consumption during this time is determined. For example, we determined the gas consumption from the meter to be 0.289 m 3 /15 min. Multiply this value by 4 and get gas consumption per 1 hour in minimum power mode 1.156 m 3 /hour. Compare the obtained value with the data from the factory instructions. For example, the standard gas consumption in minimum power mode for the Gepard 23 MTV boiler is 1.15 m 3 /hour. Gas consumption according to the meter readings approximately corresponds to the factory norm. We conclude that setting the gas valve in minimum power mode meets the requirements of the factory instructions. If not, then the gas consumption is adjusted by changing the parameter in line d.52.

Similarly, based on gas consumption, you can evaluate the setting of the gas valve at maximum power by switching the boiler to DHW mode.

Power 23.3 kW. corresponds maximum pressure at valve outlet 85 mm.water column

U-shaped pressure gauge

A simple pressure gauge for measuring on a gas valve can be made from transparent plastic tube, filling it with water and bending it in the shape of the letter U. One end of the tube is put on the valve fitting, and the other is left open. A ruler is used to measure the difference in water levels in the branches of the tube. The measured distance will be equal to the pressure in millimeters of water column - mm.water.st..

A tube with an internal diameter of 8 can be tightly pulled onto the gas valve fitting. mm. For a tube of a different diameter you will have to select an adapter.

At the end of the measurements, do not forget to carefully tighten the screw on the measuring fitting and check its tightness.

If earlier the boiler adjustment was simple - turn the valve on the burner and increase or decrease the gas pressure, then modern automation does everything herself. But there are also problems with it that require adjustment of the automation. Let's look at how a modern gas boiler functions.

Description and functions of a gas boiler

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

The safety device for gas boilers has a multi-stage protection system:

1. When igniting, you need not only to turn the gas supply handle, but also to hold it for some time until the solenoid valve (6) is activated. This prevents the device from accidentally leaking gas.
2. The backdraft sensor (8) reacts to the flow of fire from the burner into the room. This can happen due to sudden gusts of wind, a clogged chimney, or malfunctioning burners. Thanks to this controller, the gas supply is automatically turned off when backdraft occurs and people cannot be poisoned by carbon monoxide.
3. The temperature sensor (7) protects the boiler from overheating, turning on the gas as needed. Thanks to it, the temperature in the heating system is maintained at the level specified by the user.

Control systems in gas boilers can be autonomous or energy-dependent. The latter require connection to the electrical network.

Gas boiler adjustment

If the automation begins to work incorrectly, or there are malfunctions in its functioning, then you need to find the reason and either adjust the control system or replace the faulty elements.

IMPORTANT! Do not ignore malfunctions, even if they occur only occasionally. This could cost you and your loved ones your life.

Let's look at the most popular problems that you can fix yourself:

• “The boiler heated wonderfully in the fall, but in the winter the house was cold.” This is, in fact, not a breakdown, but just a need to regulate the heating temperature. There is a thermostat in the body of any gas boiler. It may look like a rotating handle with a scale, buttons with a temperature screen, or a scale with a slider on it. Just install higher value heating, your home will immediately become warmer.
• “It doesn’t work when ignited.” solenoid valve no matter how much you press on the handle.” The most common failure requiring valve replacement.
• “The boiler burns normally, but after a while there is a bang and everything shuts down.” As a rule, here we are dealing with automatic activation. But what is the reason for the “pop” will have to be clarified. It is best to invite specialists.

IMPORTANT! Do not glue or jam a faulty EM valve! It is responsible for the gas supply, and if it is fixed, the rest of the automation will be useless. When the burner goes out or reverse thrust, You risk simply suffocating.

Conclusion

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

Gas boilers are often used to heat houses - convenient and quite economical appliances that run on blue fuel. The correct functioning of these devices is ensured by a number of devices that monitor the operating mode.

Timely adjustment of the gas boiler automation allows you to increase the efficiency of the heating device, as well as ensure reliability and safety in operation. And this, you see, is quite important point for all users.

But how to make the adjustment and is it possible to do it on your own? Let's try to figure out these issues together. For this purpose, let’s take a closer look at the design and operating principle of the automation using the example of one of the most popular models.

We will also pay attention to the issues of setting up equipment and the main problems that the user may encounter during the setup process and further exploitation gas boiler.

This definition means a system of actuating and control devices aimed at maintaining specified modes, as well as promptly responding to emergency situations.

This ensures the safe use of boilers with minimal human involvement in the processes occurring in the device.

The design of gas boilers includes various types automatic devices (electronic and mechanical) that are designed to maintain efficient and safe operation

All automation used for the correct functioning of heating devices can be divided into two fundamental groups:

• autonomous, not dependent on external power supply;
• devices that require an external source of electrical current to operate.

Let's look at each group of devices in detail.

How do energy-dependent devices function?

Such systems are complex electronic units that require electricity to operate.

At the same time, these devices allow you to regulate the fuel supply and the degree of heating by turning off or opening the tap, which helps save heating costs.

By using safety valve the gas flow is adjusted, distributed and shut off

Most widespread received the products Italian brand EuroSIT. The most popular model is Eurosit 630, which is characterized by easy functionality, compatibility with designs from various manufacturers, reliability and durability.

Using Eurosit 630 as an example, we will consider in detail the design of the automatic block.

Conclusions and useful video on the topic

In the presented video you will find brief instructions for the installation of a gas boiler equipped with an automatic Eurosit system.

A modern gas boiler is enough complex design, which provides many useful functions. The automation of most models greatly facilitates their operation, taking over control of the mechanisms and monitoring their operation.

This significantly increases the level of safety during the operation of the heating system, and also increases its efficiency by selecting the optimal mode.

Do you need to adjust the automation of your gas boiler? Do you want to tackle this problem yourself and want to clarify some points? Feel free to ask your questions under this article, and our experts will try to help you.

Private construction is gaining momentum, and with it the demand for modern equipment heat supply, uninterruptedly providing consumers with thermal energy for heating the house and heating water for household needs.

A gas boiler - central link of the gas heating system created for such purposes. Being one of the most economical devices, it nevertheless needs to be properly configured to ensure proper fuel consumption and reliable operation.

Selection and configuration of equipment

Issues of operating the heat supply system of a private house, in contrast to centralized systems, fall entirely on her owners. And one of the problems that has to be solved is the question correct selection gas equipment.

System operating experience shows that a properly selected boiler should work at least 30% heating season.

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

Practice also shows that installing a boiler or burner with too high a power can create many problems associated with excessive gas consumption, the difficulty of selecting the temperature in heated rooms and the reliability of the system.

After selecting and installing the heating system, as well as each time it is started the following adjustments are made:

1. Full heating the boiler.
2. Complete gate opening chimney.
3. Setting the burner flame to maximum power(the flame should consist of blue and yellow segments).
4. Shutting off the gas supply valve when lowering to remove yellow flame segment.
5. Examination automatic safety and operating modes boiler

Important! Settings the right color gas burner flame has key for complete combustion gas without the formation of soot that settles on the walls of the firebox and chimney, reducing the efficiency of the system and increasing consumption gas fuel.

How to adjust burner power

If the burner significantly exceeds the boiler in power, it may not enough firebox volume, air flow through the dampers and from the boost. In this case, the combustion of the flame becomes uncontrollable, and the burner flame turns yellow.

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

Photo 1. Stopcock helps regulate the gas supply in case of problems with the boiler.

In this case, the burner power can be reduced covering the gas supply valve on descent.

However, if the power is constantly set to minimum value, this will reduce the operating efficiency and range of adjustments of the system.

Reference! When choosing a gas burner, in addition to dimensions of the combustion chamber and flame geometry, it is important to consider the compliance of the passport values minimum and maximum power and methods of its regulation, as well as gas consumption by the burner.

High gas consumption

Reason high flow gas is often inefficient operation of the heat exchanger boiler The coolant passing through the heat exchanger carries with it particles of scale and salts, which can be deposited on internal walls heat exchanger, reducing its thermal conductivity and increasing the amount of fuel required for heating.

Usually a problem with the heat exchanger manifests itself characteristic noise emanating from a working boiler, resembling a whistling or gurgling sound, similar to a kettle boiling.

In this case you will need manual cleaning heat exchanger or its washing with a special composition.

The reason for high gas consumption can also be its reduced calorie content, caused by insufficient drying by the gas distribution company. The norm of the lower calorific value of household gas should be not less than 7600 kcal per one cubic meter , in practice, the caloric content of gas may 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 so that the equipment operates reliably.

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Lack of combustion air

Lack of combustion air may be caused by malfunction of the charging system. In this case, you need to check electronic temperature controller settings and boost, as well as throttle valve.

If the burner ignites with a popping sound, this may indicate that the primary air supply holes are 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 by burner defect. In this case, the burner power can be reduced by closing the gas supply valve when lowering.

Increased pressure: adjusting the gas supply valve

During burner operation the following situations may arise:

• burner flame color red-orange or red;
• the burner flame goes out beyond the space allotted to him;
• burner flame lights up and immediately or after some time goes out, or lights up with cotton.

These signs may indicate high blood pressure gas in the gas supply system, because in winter the gas supplier often increases the standard pressure from 200-220 mm water. Art. up to pressure 280 mm water. Art.

In this case, you can reduce the gas pressure:

• covering the gas supply valve on descent;
• installation specified in the burner passport throttle washer;
• installation gas pressure regulator.

Important! When purchasing gas equipment, especially imported, it is important to take it into account work in a specific gas supply system, since each manufacturer produces equipment with its own values working optimal and minimum gas pressure.

Weak boiler draft

Weak cravings may appear various reasons. If the burner lights up and goes out immediately, or lights up with a popping sound, this may mean presence of a large amount of soot in the boiler and or in the chimney, interfering with the creation of draft.

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

Weak cravings may also occur when the weather changes, which does not allow gases to leave the furnace, and supply air enter the boiler.

In this case it is necessary reduce burner power by closing the gas supply valve on the descent, and also organize sufficient ventilation in the room.

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

Timing

If the boiler output exceeds the size of the heated premises, this may lead to frequent shutdown and startup of the boiler for heating, or it clocking.

The clock frequency can be reach 2-3 minutes.

To avoid clocking, it is necessary.

From the beginning heating season the owner of a private house must switch the heating boiler to operating mode. The operation is not the most difficult, since all instructions for setting up the unit are necessarily indicated in technical documents. In our article we will tell you what to pay attention to when setting up the equipment and how to make the boiler work with maximum efficiency.

Selection of gas equipment - main criteria

You need to decide on the settings of a gas boiler before purchasing it. We recommend starting with the power of the equipment. The features of your home matter a lot. The main condition for the normal and uninterrupted operation of such a unit is the presence of a centralized gas supply. Naturally, you can try to use imported gas cylinders, however, this will significantly increase costs. In some cases, it is even cheaper to purchase electrical equipment for heating a building than to purchase gas cylinders.

Heating boilers are single-circuit and double-circuit. In the first case, we recommend purchasing an additional boiler indirect heating. Only then can the unit be used to heat sanitary water. The best option considered a purchase double-circuit boiler who has everything necessary functions for heating the building and water. His key feature consists in transferring the priority of operating mode control to hot water supply. In other words, after opening the hot water supply system, heat is supplied to the main circuit, which also includes heating system, stops.

There are some features of the choice of floor and wall-mounted boiler. Wall-mounted equipment has less power, so it is not enough to heat the premises with total area over 300 square meters. IN in this case you will either need to purchase another boiler or install a gas boiler floor type. You can buy it in stores floor units any power.

Safe operation of the boiler - calculation of its power

The power of the heating boiler is key factor, which affects the level of heating of the premises, as well as the durability of the equipment and the safety of its operation. First of all, it is necessary to determine the heat loss through the ceiling, walls and windows. Part of the thermal energy is lost through the ventilation system, which should also be kept in mind. It is very difficult to perform such calculations yourself with maximum accuracy; you cannot do without the help of specialists.

However, there is a technique that allows you to approximately calculate the required power indicators. If the construction of the building was carried out in accordance with all safety and energy saving requirements, then about 100 W of power is required to heat one square meter heating equipment. Accordingly, it is necessary to buy a new gas boiler based on this ratio.

To select a boiler, consider the features of your building. After all, the power will depend on many factors, be it the thickness of the walls and ceilings, the presence of plastic or wooden windows, as well as their insulation. The difference between the outside temperature and the indoor temperature is great importance. So, if the temperature inside changes insignificantly, then outside the amplitude reaches enormous values. Even in winter, sharp transitions from plus 10 to minus 20 degrees are possible.

Give preference modern units. And the reason is not only the quality of such equipment, but also the presence of additional functions, for example, LCD displays. In this case, setting up a heating boiler will not be difficult, since the monitor shows the main operating parameters of the device - fan speed, actual and set water temperature, and much more.

One of the most common problems related to the power of the equipment is clocking. This phenomenon occurs when the unit you choose has too much high power. In this case, there are only two options - either purchase a new gas boiler, or try to configure it yourself. The first option is preferable, but the second is also used very often.

Boiler clocking is a situation where the boiler turns on on its own too often. This occurs due to too strong an increase in the temperature of the coolant.

Timing is fraught with serious consequences. Unintentional switching on of the equipment causes excessive gas consumption, in addition, excessive wear of the equipment is observed. However, solving the problem is very simple - adjust the gas supply to the burner to the minimum level. Check the gas supply level regularly and, if necessary, adjust the gas boiler again.

Each boiler comes with its own instructions, which detail how to do this. Usually there are special screws on the gas valve that are responsible for the intensity of the fuel supply. On modern models All settings can be made directly from the LCD display, making it even easier and faster.

Regulating the temperature in rooms - setting guide

Setting up a gas boiler allows you to set the optimal temperature in the rooms. The only condition is the presence of a thermostat, the task of which is to regulate the burner power. The thermostat is connected to a temperature sensor located in the room. Requires installation first required value temperature that is comfortable for you. After this, you can enjoy the warmth by reading books or watching your favorite films.

There are some limitations when using thermostats. For example, this device allows you to set the temperature in only one room. To eliminate this drawback, it is necessary to install a thermostatic valve in the supply pipe in front of each heating radiator. Due to the narrowing or expansion of the working substance located inside the valve, the area changes cross section pipes. Such valves react to the slightest temperature measurement; even an increase in the number of people in the room can lead to a narrowing of the working fluid.

Failure of thermostats can cause simultaneous shutdown of all heating radiators. This will lead to the cessation of coolant circulation in the heating equipment circuit. It is necessary to pre-install a jumper tube or bypass to avoid such problems.

Automatic space heating system - trust, but verify

Modern gas boilers are equipped with a function automatic selection operating hours depending on the availability of people in the rooms. This allows you to maintain the temperature at a certain level even during a long absence of the owners. This setting can only be used if the system is periodically monitored by neighbors or relatives. This is due to the fact that in the event of unforeseen problems, for example, an emergency shutdown, the entire heating system of the building will fail.

As practice shows, there can be quite a few reasons for turning off the boiler:

• reduction of network voltage;
• power outage;
• reduction in the cross-section of the chimney due to ice formed there;
• reducing gas pressure;
• burner extinguishing as a result of action strong wind, caught in the combustion chamber.

Therefore, regular monitoring is necessary. Otherwise, the system may fail, which will lead to huge financial costs. Naturally, neighbors will need to be explained how to properly adjust or configure a gas boiler in a given situation. Then you can count on nothing happening in the house during your absence.