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BAXI Eco Home boiler Raise pressure

Why do you need an expansion tank in the heating system

One of the most popular models in the Baxi line is the Baxi Eco Four 24 gas boiler. Equipment can be with a closed and open combustion chamber. The power of the unit is 24 kW. The name indicates the letter “F” if the gas boiler has a closed combustion chamber and forced smoke removal. In apartments, the BAXI turbocharged boilers are most often used. Consider the device of an expansion tank, breakdown, pressure drop and how to fill the BAXI expansion tank with air.

Coolant in the heating system

When installing the heating system, different options can be used. The most optimal is the closed heating system in which the movement of the heat carrier is produced using a circulation pump. In the primary heat exchanger, antifreeze is heated by a gas burner, and using the pump is pumped through the radiator system, thus transmitting heat to the room.

The heating system should be filled with water for normal circulation. When heated, the liquid begins to expand, so the increase in volume should be compensated for. In this regard, expansion tanks are installed in the heating system.

In this scheme, a gas boiler is only a heater. In Baxi Eco Four, the circulation pump and the expansion tank are already built.in, so such equipment can be easily installed in small apartments.

Causes of pressure decline

The reasons for the drop in pressure in the gas boiler are as follows:

  • Water from the heating system is flowing.
  • The long period was disconnected by electricity.
  • Malfunction of the expansion tank of the Civil Code.
  • Incorrect selection of the boiler.

Due to low pressure, the boiler stops working. When the water pressure in the heating network reaches a minimum mark, the water does not go to the Civil Code. When the gas pressure falls in the boiler, it immediately turns off on an automatic basis. To avoid such difficulties, you need to regularly maintain such devices. To do this, you need to invite specialists from the service service.

Acts in the fall of pressure

The low water pressure in the gas boiler or its decline to a minimum means that there are serious complications in the boiler and the network in the boiler and the network. If on the pressure gauge the indicator below 1 atm is reflected, you need to add water manually. To do this, the recharge valve opens. If after that the gas boiler does not keep the pressure, then the master should be called.

Another way to raise water pressure in a gas boiler: all networks are examined for water leakage. It happens that with the initial launches and increased pressure, butt sections of the pipes are cracking. There are leaks here. As a result, the pressure gradually drops. It is necessary to quickly eliminate leaks.

You also need to pay attention to the expansion tank: to diagnose and check it. This work is carried out by a specialist.

Step.by.step instructions for the operation of the Baxi gas boiler: from installation to independent setting and first launch

tariffs and inaccessibility of centralized resource highways in remote areas contribute to the development of autonomous systems for providing private houses with warm and hot water.

The most successful options are recognized boilers that provide hot water, nutrition and circulation of the coolant in heating contours or warm floor systems.

There are many companies engaged in the production of heat engineering equipment that develop and improve the design of heating units.

The most efficient and economical gas installations are considered, which noticeably prevail over other types of heating boilers.

baxi, home, boiler, raise

The most important operational procedure is the setting, which will be considered on the example of gas boilers of the Italian company Baxi.

Installation of a gas boiler Baxi

The installation of the boiler consists of several stages:

  • Installation of a water filter on the pipeline leading water to the DIS system. It is necessary to put cutting valves on both sides, providing the ability to dismantle the filter for maintenance, repair or replacement.
  • Placement of the unit in a designated place. Floor devices are simply placed at the desired point of the room, wall boilers are hung on the surface of strong walls. It is forbidden to fasten on drywall partitions or other structures that do not have sufficient bearing capacity. The wall is mounted on special brackets (salads), which are included.
  • All supply pipelines join. gas, the coolant is a straight and reverse fishing line for a trimmer, DIS. The coaxial chimney is installed and joined (some models are equipped with a double chimney of a vertical type). Immediately checked the presence and quality of traction.

The final step is to connect the boiler to the power supply network. This requires a separate outlet, the power of other devices from it is prohibited from operating rules.

User manual

It is necessary to first wash or clean the heating circuit and chimney. Any pollution can disrupt the nominal mode of operation, which will cause the accelerated wear of certain nodes and the failure of the entire system.

Connection of the boiler must be performed by specialists of the authorized service center, they also perform the initial setting of the installation.

The boilers undergo pre.sale preparation and enter the trading network completely ready to launch. This means that no additional actions are required.

This is the statement of the manufacturer, but in practice it is almost always necessary to adjust the settings in accordance with the available technological or technical conditions. Basically, the setting is to determine the minimum and maximum pressure of the gas and the temperature range of OV, which determines the inclusion and disconnection of the boiler.

How to turn it on

Connecting the boiler to the power supply network is carried out only after the connection of all pipelines supplying water, OV and gas.

It is necessary to carefully check the correctness of the connections, pay special attention to the gas pipeline.

Check the absence of leaks using a soap solution, if the deficiencies detect immediately fix them on your own or with the involvement of specialists of the corresponding profile. After that, the boiler can be filled with water, opening the fuel tap.

The pressure should be from 0.7 to 1 MBAR. When the pressure reaches the desired value, you can start the boiler.

First start

After connecting all communications and power supply, you can turn on the boiler.

  • Open a gas crane.
  • Set the heating and supply mode of the hot water (or only DHW). These modes correspond to the designations “Winter” and “Summer”.
  • Set the desired temperature by pressing the buttons “or”-“.

After that, the burner will start and the boiler will begin to work. Often, after the first launch, the error immediately pops up on the display and the boiler is blocked.

This is due to the air remaining in the pipelines. By pressing the R button and holding it for several seconds, an error is reset and restart the unit. Several repetitions of such a situation may occur until the air can be completely removed.

How often it should turn on?

The incidence of the boiler depends on several factors:

With excessive power, the installation quickly heats up and turns off. The circulation pump provides the receipt of new portions of the cooled coolant, the temperature sensor works and starts the boiler again.

Power can be lowered by software. It is also necessary to reconfigure the boiler, in particular, increase the F11 parameter (waiting time for re.starting) to the maximum, which is 10 minutes.

The use of the thermostat allows you to significantly increase the time between the start of the unit, since the air cools and heats up much more slowly.

Temperature adjustment

To add or reduce the temperature of the oat and left of the display, there are buttons “” and “-” (there are a special regulator on older models, the temperature rises clockwise and vice versa).

If an indoor thermostat is used, adjustment is made from it, and only the limit values ​​are installed on the boiler.

When setting temperature, the parameters should not be changed with jumps to large sizes. It is necessary to change the regime smoothly, give some time to overcome the inertia of the system. This will mitigate the transition to another mode and extend the life of the boiler.

Pressure setting

To raise pressure, a fuel tap is used, and in order to lower the pressure, the descent valve.

The range of 0.7-1 MBAR is considered the best value. Typically, Baxi boilers independently support the right value, but sometimes failures arise. If there is a constant fall that does not disappear after the system is fed, then somewhere there is a leakage.

How to raise pressure in the Baxi boiler

Hello, dear readers. If pressure falls in the gas boiler, what to do first of all? What measures are needed? Such issues are often relevant for owners of such technology.

The principles of gas boilers

In gas boilers (Civil Code), the heat carrier heats up, since natural gas is burned. This process is made a lot of heat. And it through a thermal exchanger follows a heat carrier (TN). Heated TN diverges over the entire heating network.

A model with two contours presents hot water to all plumbing devices in the house and for the “warm floors” system.

If you find a drop in pressure in the Civil Code, and the low indicator lasts quite a long time, you need to contact specialists.

For the heating network to function correctly, the boilers must maintain stable pressure. So the heated TN will be normally circulated throughout the network.

Reducing pressure may violate the work of the entire network. As a result, the house will lose heat.

Different devices are integrated into the design of the Civil Code to control it. They collect data on the state of the heating network. And these data on the display are displayed by the user.

For example, the pressure rate in a private house is considered to be 1.5-2 atm. The indicator below or higher indicates the failures in the operation of the apparatus.

Difficulties with pressure in the heating network of the house are formed only in technology, where there is forced circulation.

It is almost impossible to eliminate the pressure of pressure with your efforts. Be sure to invite a professional in the field of repair of the Civil Code.

Causes of pressure decline

The reasons for the drop in pressure in the gas boiler are as follows:

  • Water from the heating system is flowing.
  • The long period was disconnected by electricity.
  • Malfunction of the expansion tank of the Civil Code.
  • Incorrect selection of the boiler.

Due to low pressure, the boiler stops working. When the water pressure in the heating network reaches a minimum mark, the water does not go to the Civil Code. When the gas pressure falls in the boiler, it immediately turns off on an automatic basis. To avoid such difficulties, you need to regularly maintain such devices. To do this, you need to invite specialists from the service service.

Acts in the fall of pressure

The low water pressure in the gas boiler or its decline to a minimum means that there are serious complications in the boiler and the network in the boiler and the network. If on the pressure gauge the indicator below 1 atm is reflected, you need to add water manually. To do this, the recharge valve opens. If after that the gas boiler does not keep the pressure, then the master should be called.

Another way to raise water pressure in a gas boiler: all networks are examined for water leakage. It happens that with the initial launches and increased pressure, butt sections of the pipes are cracking. There are leaks here. As a result, the pressure gradually drops. It is necessary to quickly eliminate leaks.

You also need to pay attention to the expansion tank: to diagnose and check it. This work is carried out by a specialist.

Question about the cranes

If the boiler tap tap does not work, the water pressure in the network increases seriously. Professional diagnosis is required here.

A temporary solution here is a blocking of a valve supplying water at the input section in the Civil Code. But in this situation, the use of hot water is excluded.

In order not to endure such discomfort, you need to replace the tap tap.

This crane is the most important element in a boiler with two contours. It fuel pressure in the heating circuit. And the device works without failures in all its modes.

Adjustment of water pressure in a gas boiler using the first category of cranes occurs manually. As necessary, you can divide the pressure in the Civil Code and maintain its stable indicators 0.5. 1.5 bar.

Cranes of the second category usually have premium apparatus. They control the pressure without the participation of the owner, on the machine. They work on the signal of a special relay mounted in the boiler. The voltage required to activate it comes from the control board of the device.

Both classes of these cranes are made from brass. Although today analogues from polymer plastics are more widespread. Their are lower, and functionality is no worse.

Due to the faulty tap of the recharge, the pressure of the Civil Code not only increases. But it can fall rapidly, especially when starting the hot water. This is the answer to the question. why does the pressure fall in a double.circuit boiler when you turn on hot water?

Need to replace this crane. It is carried out only by experts.

The second reason for this is problems with the heat exchanger. Its high.quality diagnosis and repair are required if necessary.

Why does the pressure fall in the gas boiler Baxi

To ensure heat supply and heating water in an individual residential building, owners most often install gas boilers with closed circulation of the coolant. For the installation and operation of a gas boiler, it is necessary that the gas pipeline passes nearby. If there are no gas supply networks nearby, liquefied oil gas in the cylinders can be used for heating.

Double.circuit design allows you to increase the pressure of the working environment in the system of the system. Reducing pressure contributes to the occurrence of problems during the operation of the heating system. Let us consider in more detail what the reasons are, and in what ways this unpleasant problem can be eliminated.

Norm and control

The heat supply system adversely affects both excessively high and low pressure measured in the atmospheres. over, the normal level is 1.5-2 atmospheres.

Healthy! In multi.storey buildings with central heating, this norm is slightly higher, since here the pipes should withstand hydraulic shocks.

Types of pressure in the system

In double.circuit heating systems, the pressure is divided into the following types:

  • static. is formed under the influence of gravitational forces on the coolant; rises by 0.1 bar with an increase in height by one meter;
  • dynamic. created by forced operation of the pump unit or an increase in temperature when moving the working environment;
  • working. static uniform;
  • Excessive. the difference between atmospheric and measured;
  • Absolute. excessive atmospheric;
  • nominal. indicated by the manufacturer in technical documents for a gas boiler;
  • maximum. maximum permissible, threshold value that the device is able to endure;
  • maximum (assressing). a value at which the device is tested; may exceed the working level one and a half times.

Control devices

Gas boilers contain various components responsible for the regulation of equipment parameters and maintaining it in working condition. This system requires constant monitoring of the functioning of the system. To control fluid pressure, pressure gauges and thermomanometers are used.

Interesting! Thermomanometers allow to additionally control the temperature level.

In some systems, instead of conventional arborers, electronic sensors are used. The sensors transmit the received information to the electronic unit, which processes them and displays them on the screen.

If there is no manometer in the heating unit, then it is provided for a security group, which consists of the following components:

  • The manometer itself or thermomanometer itself.
  • Air descent to ensure an obstacle to the disgrace of the circuit.
  • A safety valve for dumping the pressure of the coolant with its strong increase.

Reasons for a drop in pressure and solution options

A pressure drop can adversely affect the normal operation of the heat supply system. In this situation, water stops entering the unit, and it automatically turns off. Therefore, it is important to provide timely maintenance, inspection and repair.

The causes of pressure falling can be different, consider the most common of them.

The pressure in the system drops when hot water is turned on

This problem is a fairly common. This phenomenon is explained by the special design of boiler rooms.

According to experts, that in reality it is just a manometer reflects incorrect meaning. The pressure of the pressure can contribute to the air leaks in the circuit or the incorrect operation of the three.way valve.

For information! If when opening a tap with hot water, the normal operation of the system is not restored over time, then the pressure is reduced, and the problem really exists.

Pressure drops due to leaks

To eliminate this type of malfunction, the owner needs to diagnose and inspection of the entire heating system, since the liquid can go through any node.

The cause of the leak may be a loosely clamped connection, the wear of heat exchangers, cracks in pipes and batteries. Most often, the tightness level is checked when the circuit is launched into operation, however, the tightness can violate during operation itself.

Nodes that need to be inspected and checked in the first place:

The discovered problems must be eliminated, after which the system will be fed with liquid until the normal pressure level is restored.

Air traffic jams

The formation of cracks and depressurization of the heat supply system leads not only to leaks, but also to the opposite effect. suction of air masses in the outline. The result of this is the formation of air bubbles.

Bubbles are also formed with incorrect filling of the circuit, so air traffic jams appear in it, causing a significant drop in pressure.

Recommendation! This problem is solved through ordinary defaulting the system, thanks to the installation of descent.

Explanatory tank problem

There are cases of problems with expansion tanks. A gap is formed here or the nipple can pass air. The inner side of the tank consists of two compartments separated by a membrane. There is air in one department, and the other is filled with the coolant. When heated by a liquid working environment, its expansion occurs, and it presses on the membrane with greater force. The membrane, in turn, affects the compression of the gas mixture.

Когда оборудование функционирует длительное время, ниппель изнашивается и начинает пропускать воздух, что и приводит к снижению давления.

The only resolution of this malfunction is the complete replacement of the tank, however, before that, you should make sure that the problem lies in this, and not in the leak of pipes, radiators and bullying the system.

Malfunction of measuring equipment

Sometimes the diagnosis of the system for the integrity of its component components may not give results. If you have not been able to detect a visible reason, then you should think about checking the serviceability of the boiler automation and instrumentation equipment. This equipment may break and give out incorrect readings.

Pressure in the expansion tank of the gas boiler: norms and methods of adjustment

A single.circuit or double.circuit gas boiler is an equipment that makes our life in a house or apartment more comfortable. Manufacturers are now producing a huge assortment of gas devices that differ in power, functionality, as well as the installation method. However, even the most expensive and reliable models can fail. Agree, it is not very nice to stay on winter evening without heat and hot water.

After analyzing the possible causes of damage to gas equipment, we came to the conclusion-most often malfunctions in the work are due to the fact that the pressure in the expansion tank of the gas boiler or water heater is incorrectly configured. In the article we’ll figure out why an extensor tank is needed, how to independently pump air into it and configure optimal pressure.

Why do you need an expansion tank?

During heating, the water has the ability to expand. when the temperature rises, the volume of the fluid increases. In the contour of the heating system, pressure begins to grow, which can destroy the gas equipment and the integrity of the pipes.

The expansion tank (expansomate) performs the function of an additional reservoir, in which pressure squeezes out as a result of heating excess water. When the liquid cools and the pressure stabilizes, it returns through the pipes back to the system.

The expansion tank performs the function of a protective buffer, it extinguishes water drivers, which are constantly formed in the heating system due to frequent inclusion and off of the pump, and also eliminates the likelihood of air traffic jams.

How to deal with Low Pressure in a Combi-Boiler

To reduce the likelihood of forming air plugs and prevent damage to the gas boiler with a water gunner, the expansion tank should be mounted in front of the heat generator, at the return

There are two different options for the execution of damper capacities: open and closed types. They differ not only in design, but also in the way, as well as the installation site. Consider the features of each of these types Read more.

Expansion tank

Open.type tank is mounted at the top of the heating system. Tanks made of steel are made. Most often they have a rectangular or cylindrical form of execution.

Usually such expansion tanks are installed in the attic or attic. Installation under the roof is possible. Be sure to pay attention to the thermal insulation of the structure

In the structure of the open.type container there are several bends: for the input of water, the removal of the cooled liquid, the supply of the control pipe, as well as the outlet tube for the removal of the coolant into the sewer. We wrote more about the device and types of open.type tank in another article.

  • controls the level of the coolant in the heating circuit;
  • If the temperature regime decreases in the system, it compensates for the volume of the coolant;
  • When the pressure in the system changes, the tank performs the function of the buffer zone;
  • Excess the coolant removes from the system to the sewer;
  • Removes air from the contour.

Despite the functionality of open expansion tanks, they are almost not used. Since there are many shortcomings, for example, a large size of the container, a tendency to corrosion. Their installation is carried out in heating systems, which work only with natural water circulation.

Closed expansomate

In heating systems with a closed contour, an expansion of a membrane type expansion tank is usually mounted, it is optimal for any type of gas boiler and has a large number of advantages.

The expansomate is a hermetic container, which in the middle is separated by an elastic membrane. Excess water will be placed in the first half, and in the second. ordinary air or nitrogen.

Closed expansion tanks for heating, usually painted red. A membrane is located inside the tank, it is made of rubber. Necessary element to maintain pressure in an expansion tank

Compensation tanks with a membrane can be produced in the form of a hemisphere or in the form of a cylinder. Which is quite suitable for use in the heating system with a gas boiler. We recommend that you familiarize yourself in detail with the features of the installation of closed tanks.

  • simplicity of independent installation;
  • Corrosion resistance;
  • work without a regular top of the coolant;
  • lack of contact of water with the air environment;
  • performance in conditions of increased load;
  • tightness.

Gas mounting equipment is usually equipped with an expansion tank. But not always an additional reservoir from the factory is correctly configured and may immediately join the operation of heating.

Air pressure in the expansion tank

The air or nitrogen pressure indicator in the expansion tank for various gas boilers will not be the same, it all depends on the type of equipment and structural features. Standards are indicated by the manufacturer in the product passport.

Typically, the pressure in the new damper capacity is 1.5 atm. But such a setting may not be suitable for a specific heating system. Factory parameters are easy to drop. For these purposes, in the housing of the expansion tank there is a special fitting (some manufacturers are spool for pumping), through which air pressure is adjusted.

Nippel is located from the air chamber of the cylinder. With it, you can lower excess pressure or, conversely, pump up the tank

For the normal functioning of a gas boiler, it is necessary that in the membrane tank, the pressure is less than 0.2 atm than in the system itself. Otherwise the heated water that increased in volume will not be able to enter the container.

In small houses and apartments for closed heating systems, pressure in the expansion hydraulic tank is usually acceptable in the range of 0.8-1.0 bar (atm). But not less than 0.7 bar, because many gas boilers are protected and the device simply does not turn on.

Check the level of pressure of the tank annually. If pressure surges in the heating system are noticed, it means that air has come out of the damper capacity and it must be pumped up.

How to set optimal pressure?

On the heating system are manometers with which the pressure in the circuit is controlled. On the most expansion tank of the fitting under the installation of a measuring device is not. But there is a nipple or spool for the release and pumping of air or gas. Nippel is the same as on wheels of cars. Therefore, you can check the pressure level and adjust it by means of a conventional car pump with a pressure gauge.

Errors and their codes

Error codes that can occur during the operation of BAXI gas boilers can be divided into two groups:

In the case of a full installation blocking, it will be necessary to restart the boiler in manual mode. The lock is turned on in the event of serious malfunctions in the boiler, which may pose a serious danger to human health. In the event of which the boiler is blocked, the equipment overheats, and besides it, the lack of traction occurs. Blocking occurs in the absence of gas supply. Error self.removal is carried out in rare cases. If this happens, then the device is launched in automatic mode.

Error E01

This error is the most common. When the flame control sensor works, this code is displayed on the display. Several reasons can lead to its appearance:

  • There is no gas supply;
  • There is no compliance between the phase and zero; This reason is relevant for phase.dependent models;
  • There is no contact with the flame sensor;
  • the sensor is contaminated or faulty;
  • In the ignition system, failures arose;
  • a gas valve is faulty or an electronic fee is out of order;
  • Air access is insufficient for normal combustion;
  • gas pressure in the system is insufficient.

If this code is displayed on the display, then the first thing to do is to check if the sensor is connected correctly. It is also worth checking the gas supply. If everything is normal, then in this case you can press R. It should be held for 3 seconds.

In case of accidental triggering, the equipment will continue to work in normal mode. If the error appears further, then in this case you should contact a specialist. Note that the occurrence of this error is associated with problems in electronics. If you try to solve the problem on your own, then everything can end deplorable for gas equipment.

Error E10

Another common mistake is E10. The main reason for its occurrence is the sensors that monitor the operation of the pumps and monitor the circulation of water. This error can be displayed on the installation display in the following cases:

  • The system of the coolant decreased in the system;
  • Contact disappeared between the board and the pressure relay;
  • pressure relay malfunctioning;
  • The pump operating sensor has become faulty;
  • there were malfunctions in the operation of the pump;
  • Clogging the heat exchanger.

When this error occurs, you do not need to try to eliminate it on your own. Self.repair is permissible if the pump is required. This event will not be difficult. Also, without outside help, you can clean the filters. All other works related to the repair of the Baxi boiler must perform an experienced specialist.

Errors E96, E97, E98

Urgent repairs by a qualified specialist is required if the errors of the E96, E97, E98 were displayed on the display of the gas boiler. When they occur, an intervention in the operation of the equipment owner is unacceptable. The ban on interference with these errors is due to the fact that these three code appears when the electronic board has become faulty.

The arising error codes help the owner of gas equipment track any, even the most insignificant failure in his work. Repair of the Baxi boiler should be considered how something akin to the treatment of the disease. Getting rid of it is much easier only with timely diagnosis.

Start of the boiler.Check the pressure in the expansion tank on the back of the boiler (red flat round tank with a car nipple). Should be 0.5 atmosphere.

Check all heating taps, everything should be open.

We fill in the heating system, opening a special crane and look at the pressure gauge, when the pressure rose to 1.5 atmosphere into the “green zone”, block the crane and go lower the air in the batteries.

Lowered air, the pressure fell, pick up the air again and again. We do this until water will flow out of the batteries and the pressure will not stay slightly above the unit on the player. Next, remove the boiler lid, it will be easily removed and not protected by fillings. Just unscrew 2 screws from below and lifting up remove it.

Then unscrew the screw of the plastic panel and turn it.

On the pump you will see another screw for puffing air.

We unscrew this screw with our hands so that the air comes out (it can be there this time very little, but that’s not all).

The air came out, twist the screw, if you need to add the water to the system to pressure, the unit (1), without dressing the front cover, turn on the boiler and run only heating in the minimum or 50 degrees by the temperature for one minute.

The pump will turn on, which will begin to drive water through the heating system. At this moment, errors may come out that the boiler is overheated, t. e. heat sensors are triggered, the pump blocking error, the thermostat malfunction, etc. P. The main thing is not to be scared, it was the same for me. The whole problem is that the system still has air. Some errors block the burner, pump and who knows what else. Where you can, according to the instructions, get rid of these errors (r), and where you can’t, just turn off the boiler from the mains and continue to do the described next.

After a minute, turn off the boiler with the buttons on the panel and from the power supply. Open our screw behind the pump again, then you will hear that the air comes out and moreover.

Close the screw and start the heating again for 1 minute, then turn off the air again. We do this until the air stops leaving the heating system.Next, we turn the screw at 0.25-0.5 turns and leave it open, t. to. it is a float type and he will let out the remnants of the air. In theory, you can immediately open this screw and drive water, but then it will not be clear whether the air came out and whether the cause of the issued errors was incorrect.

Regarding this malfunction, the manufacturer’s instructions say: contact the service service. But the E25 BAXI gas boiler error is not related to complex breakdown, and therefore the user is able to eliminate the causes of the emergency stop of the heating unit without calling the master of the service organization. The article explains what and how to do.

The pressure in the dual.circuit boiler drops

This is a fairly common problem. it is manifested in the fact that the pressure in the heating system slowly decreases and when it drops below the norm, some boilers are disconnected.

Most often the reason is an elementary water leak of pipes or leaked radiators. It is not easy to detect such a leak in the heating season. you will not see a puddle on the floor (well, of course, unless this is a serious leak). Most often, it will be just droplets and you will not see these droplets, because from heated pipes they quickly evaporate.

How and where to look for a leak. you need to pay attention to traffic jams, junction of the connection or soldering of pipes and fittings. Often you can see traces of water flowers in the form of rusty or salt divorces. It will be easier to detect various kinds of leakage, if you turn off the heating for a while, let the radiators cool and add pressure to about 2.5 bar. After that, you can see drops or puddles on the floor.

The boiler can also be the cause of the leak. For example, the primary heat exchanger itself or the place of its connection flows. But while these are small droplets, you will not notice anything, during the operation of the boiler they evaporate. How to leak more actively, notice the “drops” from the boiler.

The pressure in the dual.circuit boiler drops when hot water is turned on

When the tap with hot water is opened, the pressure in the heating system falls (approximately 0.3 atmospheres). The tap closed. the pressure is restored.

Why does the pressure in the boiler then fall risen

Expansion tank is a sealed container separated by a membrane in half, one half of the tank is filled with inert gas (or just air), the other is filled with a coolant (water). It is designed to compensate for the pressure of the heated coolant created during the expansion of the heated. When heated, the water expands, and if it has nowhere to expand, it will break the heating or pipe radiators (since the liquids are practically inconsistent).

The expansion tank should be filled with air under a pressure of about 1.5 bar (we look at the exact number in the instructions for a particular boiler). The air is pumped there through the spool (as in a car or a bicycle), and if it is underway, then over time the pressure will drop. To check, moisten the head of the spool with a drop of water, if the bubbles go. the knot is faulty and requires replacement.

To check the tightness of the expansion tank membrane, we open the fuel tap. If the pressure grows at the moment, this is the first sign of lack of compensation. The membrane passes water, the air cavity behind the membrane is filled with water and does not compensate for the pressure. For verification, you can press on the nipple of the spool through which air is pumped into an expansion tank. water flows from it.

The pressure in the closed heating system can also change from a large amount of unrelated air from the system. And although modern boilers are equipped with automatic air troops, they may not work over time due to an overgrowth of a scale.

As a result of an increase in pressure on the boiler, above the nominal, periodic triggering of the locks occurs, and excess coolants from the safety valve are tired.

The heating system is not designed to work in mode when all its components experience excessive load. Overloads can lead to negative consequences due to the failure of expensive elements.

Therefore, the reason why pressure grows in a dual.circuit boiler must immediately eliminate. For users of the autonomous heating system, a list of probable malfunctions is presented that can lead to increased pressure, and ways to eliminate them.

Temperature adjustment

To add or reduce the temperature of the oat and left of the display, there are buttons “” and “-” (there are a special regulator on older models, the temperature rises clockwise and vice versa).

If an indoor thermostat is used, adjustment is made from it, and only the limit values ​​are installed on the boiler.

When setting temperature, the parameters should not be changed with jumps to large sizes. It is necessary to change the regime smoothly, give some time to overcome the inertia of the system. This will mitigate the transition to another mode and extend the life of the boiler.

Pressure setting

To raise pressure, a fuel tap is used, and in order to lower the pressure, the descent valve.

Baxi Ecofour проблемы с горячей водой.

The range of 0.7-1 MBAR is considered the best value. Typically, Baxi boilers independently support the right value, but sometimes failures arise. If there is a constant fall that does not disappear after the system is fed, then somewhere there is a leakage.

This may mean either a leak of pipelines or radiators, a warm floor system or other external elements.

Often the problem arises due to a malfunction of the descent valve. An emergency increase in pressure may be due to a malfunction or open tap of recharge or damage to the membrane of the expansion tank.

The pressure of gas in the boiler drops. What do we have to do?

A fairly common problem when using double.circuit gas boilers, when hot water is turned on, and the pressure inside the boiler begins to drop sharply. The pressure drop occurs almost to zero, and warm water has a pungent odor. Sometimes it even happens that due to the error in reducing the pressure of the heating boiler, it automatically turns off.

Another case is that the pressure drop is observed with the temporary cessation of water supply in the house, after which the boiler fuses do not allow to start it again. When trying to turn it on, the tank will give an error about pressure problems, and simply will not turn on.

In general, the drop in pressure in the boiler is very harmful to the boiler and water supply systems, so you need to immediately diagnose the problem, and then proceed to its immediate solution. What is the matter and what to do, read below.

What is the problem of pressure reduction?

There are many reasons why such a malfunction can happen. Among the most likely, problems with the tank are distinguished, sometimes various damage to the heat exchanger. However, in most cases, the cause of pressure falling in a gas boiler lies in the non.working state of the tap tap. It can be not loosely closed, or it may be completely faulty. Even small mechanical damage to the crane can cause pressure falling. Otherwise it is called a connected valve or a crane of filling.

It is put mainly on combined or double.circuit boilers. The fact is that the water supply system and the heating circuit are reported through an open or faulty filling valve, and this should not happen. The consequence of this is the leveling of pressure, since the two systems are interconnected. Typically, inside the water supply, internal pressure is much larger than should be in the heating system.

Therefore, this pressure is quickly dissipated through the hole, and in the end it turns out that in fact the boiler and the water supply will have the same pressure.

At the same time, the boiler continues its work, but pressure indicators remain the same, since the water, expanding due to heating, flows into the water supply. It is worth only to turn on hot water, as the pressure will fall right there. That is, due to the failed crane, the boiler and water supply are essentially communicating vessels trying to balance each other.

This explains the sharp unpleasant odor, because the water, before leaving over the crane, passes through the water supply in which the already used water is merged. But you just have to turn off hot water, as pressure in the entire system returns to normal. It returns to the state in which it is when it enters the house of cold water.

But the pressure in the boiler remains low, since the water fills the boiler through the same tap tap.

It follows that this problem makes the tank constantly fill up and devastate. This is very harmful to the entire system, and there are two reasons for this:

  • Oxygen that water supply brings with it. He oxidizes all the pipes, which leads to their malfunctions. Metal corrosion very negatively affects it, which in the end can lead to serious problems. The pipes subject to corrosion are destroyed and after some time the water begins to pass through them. Repair can be very expensive, as you have to replace all equipment. The constant duct of fresh water reduces the service life of the equipment five to ten times.
  • Salt, in large numbers contained in the same water. They lead to the formation of scale, and this is also not useful for the boiler. It will be almost impossible to clean this scale from the pipes without damaging them. Leading manufacturers of heating equipment strongly recommend that the feeding is not more than the volume of the boiler, increased three times.

How to solve the pressure problem?

The very first thing to do in such cases is to check the valve. Before starting the check, make sure that the tap tap is closed as tightly as possible. Check what will happen when a gas boiler is in a turn off. To do this, disconnect it from the mains. The same thing happens even in the state. one solution is to call a service that will replace the crane. It is not recommended to replace the crane yourself at home, since special equipment may be required to perform this work.

If the pressure is reduced only while the boiler is turned on, and this does not happen during the use of warm water, but only when the boiler is turned on, then the cause of the breakdown is most likely in the expansion tank. It is easy to eliminate the malfunction itself, at home. Find a malfunction enough by an external inspection, most often it is some kind of scratch or a small hole, then pour it with special glue. If the hole is large, then the help of specialists or a complete replacement of the expansion tank will be required to repair.

A drop in the pressure in the heating system

Currently, more and more suburban houses are equipped with a heating system consisting of a gas double.circuit boiler and radiators. Which is very convenient. by installing only one device, you get hot water and a comfortable air temperature in the room. Almost all boilers manufacturers are large foreign companies. But, even installing a reliable water heating device in our house, we are not safe from the troubles accompanying the work of this apparatus.

One of the problems arising during the operation of a gas double.circuit boiler is a drop in pressure in the heating system. Why is this happening. let’s try to figure out this article.

The reasons for the drop in the pressure in the heating system

So, the situation from life: winter, temperature minus 20, a country house is heated by a double.circuit boiler. You go to work or somewhere on business, at home heat. After some time you are returning, go home and understand that the heating does not work, it is cool in the room. First of all, approach the boiler and find that it does not work, and the pressure gauge shows zero, that is, there was a drop in pressure in the heating system.

You immediately begin to think: what would happen if you hadn’t appeared at home for a long time? And it would be to defrost radiators and failure of an expensive double.circuit boiler of a famous brand.

What could happen in your absence? Everything is simple here, for some reason they turned off the electricity, the boiler stopped, the pressure in the heating system fell below the mark, in which it can be included in the work. They gave the light in an hour, but the device could not start working. Here you have a home.scale disaster.

What can you do with your own hands so that such situations do not happen? I repeat, here we will talk about things that can be corrected independently, if it is a failure of a double.circuit boiler, you need to call specialists.

The first thing to do is check the heating system for the lack of leaks. Take a paper towel and wipe all the joints and connections. There were cases that a person assured that there was no leakage, and the pressure in the system decreases. As a result, by chance, or after a more thorough inspection, it was found that it was digging from the system, and there were no puddles on the floor, because the water managed to evaporate before the drop fell to the floor. Or drops appeared in joints and joints with increasing pressure in the pipes. Of course, all the leaks found must be eliminated.

Setting up an expansion tank

The second thing that should be paid to when the pressure falls in the heating system is the correct operation of the expansion tank.

As you know, fluids increase their volume when heated. Water, for example, at a temperature of 90 degrees, has an expansion coefficient equal to 3.59 %. Therefore, so that excess pressure is not created in the heating system, expansion tanks are used. When heating the liquid, the excess volume should go into the expansion tank, thereby stabilizing the pressure, and when the water cools, it leaves the tank, filling the system. Thus, the pressure in the heating system during the operation of the boiler is preserved within the permissible limits. In dual.circuit boilers, expansion tanks are already installed in the boiler itself.

To indicate improper operation of the expansion tank can that when heated the pressure increases sharply, even emergency water discharge is possible through the safety valve, and when the arrow is cooling, the manometer drops down to such an extent that you have to nourish the system. In this case, you need to adjust the work of the expansion tank.

The instructions for the boiler indicate what air pressure should be in the expansion tank. Therefore, for the proper operation of the tank, this pressure must be set. For this:

Cross the taps of water supply and return.

Find the drain fitting on the boiler, open it and salt the water.

We will find Nipple on an expansion tank, like on a bicycle wheel and lower all the air.

We will connect the car pump to the expansion tank and pump it up to 1.5 bar, while water can come out of the drain fitting.

If the hose from the boiler is suitable for the tank, we disconnect it, you need to pour all the water out of the tank.

We pump up an expansion tank of pressure according to the instructions for the boiler

Fill the heating system with water under a pressure of 1-2 bar.

Turn on the boiler and check. If when heating the water of the arrow of the manometer is within the green zone, then we did everything right.

Calculation of a membrane expansion tank

In some cases, the drop in the pressure in the heating system is associated with the wrong choice of a double.circuit boiler. When thermal calculation, the area of ​​the premises that need to be heated is taken into account. Based on these conditions, the power of the heating device is selected. Conventional radiators are laid in the calculation, in which the volume of water is not very large. And if metal pipes, liquids are used instead of radiators to fill them several times more, respectively, and the volume of expanded water will also be increased.

Expande tank in double-circuit boilers is usually 6-8 liters. It is designed for about 120 liters of water in the heating system. For radiators, this is quite enough. But what can happen if there is more water in the system than it should be calculated. Suppose liquid, heated in pipes, expands and fills the standard expansion tank.

But the size of the tank is not enough to remove excessive water, the pressure rises and emergency discharge occurs through the safety valve. After the boiler is turned off, the water from the tank goes back into the system, but since the boiler had an emergency discharge, the liquid in the system is not enough, the pressure drops below the critical mark. Everything, without a fuel of the system with water (that is, without human participation), the boiler will not turn on.

If the window is low air temperature. defrosting the system is provided. And this can happen at the most inopportune moment.

Now on sale there are automatic water submissions that supply water to the system if the pressure in it drops below a certain mark. Homeowners who leave their homes unattended for a long time should pay attention to them.

Why does error E10 appear on the Baxi boiler display, or why does the pressure in the heating system drop

Namely. BAXI boiler constantly stops by error in the absence of pressure in the system, that is, an E10 error flashes on the display.

The arrow of the manometer is at zero. You feed, that is, add water to the heating system, and after a while, from several hours to several days, the arrow of the manometer is again at zero, and an error E10 appears on the boiler display again.

And you begin to call us and ask to solve the problem. Come and deal with the boiler, fix the boiler Baxi.

baxi, home, boiler, raise

And the option that the matter may not be at all in the Baxi boiler, and the boiler has nothing to do with the problem. customers, as a rule, do not come to mind.

When the cause of the pressure falling in the heating system and the appearance of E10 error in the boiler.

For example, leakage of the main/beetermic heat exchanger, as in the photo below.

Anything can run in the boiler, more precisely, any hydraulic element: the main/beethermic heat exchanger, the pump air vent, an overgrown emergency grief, copper tubes, gaskets, a three-way valve on the stem (especially relevant for Baxi Fourtech/Eco-5 Compact boilers). We will not talk about the reasons for the appearance of leaks in the boiler here.

Therefore, the first thing that makes the master removes all the panels of the Baxi boiler and the combustion chamber cover and examines, visually and feel the presence of leaks.

IMPORTANT! If there is a leak in the boiler, then it is always visible visually.

Suns, drops, spots, stains, damp, puddles-all these are signs of leakage in the boiler.

In the event of a leak in the boiler, be prepared for the fact that the replacement of current spare parts will be necessary, in the example in the photo of the main/beethermic heat exchanger!

The worst cause of the leak in the boiler is its defrosting!

This is when the boiler and the heating system are filled with water, the boiler is left unattended, for example, in the house under construction, then the boiler does not work for some reason or go into an error, for example, electricity or gas at minus temperatures turns into ice!

Even if the room is warm, a non.working boiler can defrost through a coaxial chimney!

The consequences are replacing something expensive in the Baxi boiler.

baxi, home, boiler, raise

I would like to note that on a new, just installed boiler, Baxi leaks or there are no at all, or their appearance is negligible. Unless, of course, you have not defrosted the boiler!

All BAXI boilers are pressed at the factory, and the boiler is normally packed in the carriers during transportation is impossible.

If there is no leakage, then the master proceeds to the second stage of verification.

Then the drops of pressure and pressure surges are possible.

The expansion tank performs the function of the compensator. Когда жидкость нагревается, она расширяется в объеме, и этот лишний объем должен куда-то деться-он уходит в бак. When the liquid cools down, its volume decreases, and the pressure drops, and in this case the deficiency is also compensated from the tank.

Therefore, the second thing the master will do after examining the boiler will check and if necessary adjust the air pressure in the expansion tank.

If the master came to you, checked and pumped up an expansion tank, and also visually examined the boiler and made sure that there is no leak in the boiler itself, it is not in the boiler.

And you have no more reason to call us and tell the same thing as the pressure falls again and again, how you fuel, and that you cannot find a leak, do not believe in a leak and still think that it is to blame the boiler.

I understand that you really want to think that the problem is in the boiler, because then you will not have to press the system, eliminate the leak. No and no again.


The most common cause of pressure falling in the system and the appearance of E10 error.

How often do we hear. Yes, I went everywhere, I checked everywhere, there is no leakage.

Firstly, a leak does not mean that water is pouring with a stream and somewhere there should be a large puddle! Not at all!

For falling pressure, a slightly leaking nut, or gaskets between the radiator sections. She can get wet and dry out right there!

How often customers say that there is no leakage, they do not pay attention to the fact that the shut.off crane has been leaking for a long time, they believe that this is normal or unimportant.

Regarding “I walked on all floors and checked”.

Each house has impassable places, from a series of pipe under the threshold, pipes in the underground, pipes walled up in the wall, as well as warm floors flooded with concrete. Yes, they also have leaks, for example, due to self-tapping screw.

It happens that some section of the pipe is defrosting in winter, and the pipe bursts.

Secondly. The only reliable way to search for leakage when it is not visible.

That is, plumbers come to you, and preferably those who did this system, with a magic device called the Aletian. They overlap the boiler (after all, it is not designed for pressure above 3 atmospheres) and pump water or air into the system under pressure. About six atmospheres pumped up the pressure and went to look for places where water or air comes out of the system (air will come out with a whistle in places of leaks)

Our task does not include telling how crimping is carried out. INTRODUCTION OF TRANSFER OF PRODUCTION OF PRODUCTIONS.

At the end of crimping, it is logical to issue an act of testing the system. This is an official document that undergoes that there is no leakage, or speaking that it was not possible to find a leak.

If you call us again and again and categorically say that, they say, you have no leakage in the system, you personally have passed and checked it, but this boiler is to blame, come to me and make a boiler, but you did not have a testing, or did not do it, Or it was made by semi-literate faces who pretend to be plumbers if you do not have a crimping act, then we will not talk to you!



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