Gas boiler baxi gas consumption. Double-circuit wall-mounted gas boiler baxi

This article sets out what kind of Baxi brand, information on the manufacturer, as well as basic specifications each episode gas boilers Baxi.

General information on the manufacturer of gas equipment BAXI

BDR Thermea takes the leading place in the world as a manufacturer of high-tech heating and hot water supply systems. The total turnover of this market is estimated at 16 billion euros.

BDR Thermea employs 6,400 people. At annual turnover of 1.8 billion euros the company occupies a leading position in the markets of such European countries as France, Great Britain, Germany, Spain, Italy and the Netherlands. In the markets of Eastern Europe, BDR Thermea has acquired a fairly strong position in recent years. The same goes for Turkey, China and the United States. The company's products can be bought in more than 70 countries.

BDR Thermea has chosen the following strategy: promotion of local brands with a strong position in the European markets. These brands can quickly respond to consumer preferences. Thus, the products of the BDR Thermea group in Europe can be found under the brands Remeha, Baxi, De Dietrich, Heatrae Sadia, Potterton, Brotje, BaxiRoca, Chappee and Baymak.

The company takes great care of relations with partners, investing heavily in employees and strengthening ties with foreign partners. BDR Thermea strives to offer customers complete solutions in the field of heating and hot water supply based on innovative technologies.

Baxi branded products

The company claims that boilers Baxi embodied the latest technologies and rich experience accumulated by the corporation over the years. Maximum efficiency combined with a reasonable price gives the best performance.

More details on each boiler of this brand can be read by selecting it in one of the appropriate headings:, or, where, by choosing the one you are interested in boiler, you can read on it reviews, look options, download instructions and get to know other nuances on specific boiler.

The range of Baxi household gas boilers is very large. Let us consider in more detail the products of this company, for ease of perception, summarizing the series of boilers in tables.

Gas boilers BAXI LUNA-3 COMFORT series

Gas boilers Baxi LUNA-3 COMFORT series

These units belong to the third generation. Equipped with a removable electronic control board, which allows you to install it in any place convenient for you. A pleasant trifle is the presence of a room temperature sensor on the board.

The gas system of boilers of this series is equipped with an electronic flame modulation system, electronic ignition and steel flame diffusers. The boilers can operate when the gas pressure drops to 5 mbar, which is important in Russian realities. Moreover, it is possible to burn not only, but also liquefied gas.

The DHW circuit has an electronic water flow meter. The primary heat exchanger is made of copper coated with a special anti-corrosion compound. Secondary stainless steel heat exchanger. There is also a pressure gauge, a filter at the water inlet from the network, well, and other interesting options.

Boiler control system LUNA-3 COMFORT allows you to program the heating mode for a whole week in advance. It is also possible to connect an outside temperature sensor, and then the heating mode will be guided by the outside temperature.

Among other things, these devices have a lot of security systems. These include flame control, and protection against blocking of the three-way valve and pump, a thermostat for protection against overheating of water and other protection systems.

Specifications				LUNA-3 COMFORT AIR 250 Fi	LUNA-3 COMFORT AIR 310 Fi
	31	25	24	25	31	31	25	24
	10,6	9,3	9,3	9,3	10,4	10,4	9,3	9,3
Maximum consumption of natural (liquefied gas) m3 / h (kg / h)	3,52 (2,63)	2,84 (2,12)	2,78 (2,07)	2,84 (2,09)	3,52 (2,59)	3,52 (2,63)	2,78 (2,07)	2,78 (2,07)
Max. productivity,%	93,1	92,9	91,2	92,9	93,1	93,1	92,9	91,2
Productivity at 30% power,%	90,8	90,2	88,7	90,2	90,8	90,8	90,2	90,3
Expansion tank, l	10	8	8	8	10	10	8	8
The combustion chamber	closed	closed	open	closed	closed	closed	closed	open
Range of regulation of temp. in the DHW circuit, ° C	35-65	35-65	35-65	35-65	35-65	-	-	-
Nominal gas inlet pressure, mbar	13-20	13-20	13-20	13-20	13-20	13-20	13-20	13-20
Electric power, W	165	135	80	135	165	165	110	170
Dimensions: -height, mm	760	760	760	760	760	760	760	760
-width, mm	450	450	440	450	440	450	450	450
- depth, mm	345	345	345	345	345	345	345	345
Net / GROSS weight	39/42	37/40	32/35	39/42	45/50	37/40	36,5/39,5	30,5/33,5

Gas boilers BAXI LUNA-3 Silver Space series

Wall-hung boilers of this series are designed for outdoor operation. The boilers can operate up to a temperature of -15 ° C.

Gas system LUNA-3 Silver Space similar to boilers .

The hydraulic system is characterized by the absence of an electric actuator in the three-way valve and by the presence of a high-speed circulation pump with an automatic air vent.

Also boilers Silver space have a device remote control with climatic regulator.

The rest of the boilers of these series are similar.

Technical characteristics of gas boilers manufacturer BAXI LUNA-3 Silver Space series

Specifications	LUNA-3 SILVER SPACE 310 Fi	LUNA-3 SILVER SPACE 240 Fi
Max. useful thermal power, kW	31	24
Min. useful thermal power, kW	10,4	9,3
Max. consumed heat power, kW	34,3	26,3
Min. consumed heat power, kW	11,9	10,6
Max. natural (liquefied) gas consumption, m3 / h (kg / h)	3,63(2,67)	2,78(2,04)
Max. productivity,%	90,3	90,3
Performance at 30% power	88,0	88,0
The combustion chamber	closed	closed
Power, W	190	170
dimensions - height, mm	830	830
dimensions - width, mm	550	550
dimensions - depth, mm	250	250
Net weight, kg	42	41,5

Gas boilers Baxi Nuvola-3 B40 series

Boilers series NUVOLA-3 B40 specially created for high hot water flows... Thanks to the built-in boiler, these units are capable of delivering 450 liters of water within half an hour, heated by 30 ° C in relation to cold. A wide LCD display allows you to clearly see all the information about the operation of the boiler and possible failures.

Built-in boiler volume - 40 l, body material - enamelled steel AISI 316L.

If there is a lack of water pressure, the pressure switch will work. There is also a system of protection against water freezing in both circuits.

The line is represented by four models: NUVOLA-3 B40 240 i, NUVOLA-3 B40 280 i, NUVOLA-3 240 Fi, NUVOLA-3 280 Fi.

NUVOLA-3 Comfort.

In this series, the built-in boiler has become even larger. Now its volume is 60 liters. This means that you can already get 510 liters of hot water within 30 minutes. Equipped with boilers of this series and a removable digital panel.

In total, the series has 5 units: NUVOLA-3 Comfort 240 i, NUVOLA-3 Comfort 280 i, NUVOLA-3 Comfort 240 Fi, NUVOLA-3 Comfort 280 Fi, NUVOLA-3 Comfort 320 Fi.

Gas boilers BAXI LUNA-3 Comfort COMBI series

These are no longer just boilers, but a whole complex consisting of a wall-mounted boiler and an 80-liter boiler placed on the floor. Moreover, the boiler is designed in such a way that it is possible to install the boiler on the boiler without fixing it to the wall. The compact dimensions of this series of boilers are also noteworthy: 1640 × 450 × 550. Thanks to them, the boiler can be placed even in the smallest rooms.

In fact, the series is a combination of a boiler LUNA-3 Comfort 1.310 Fi with boiler COMBI 80.

The sleek design and compact size did not prevent the designers from making the connection of the boiler to the boiler simple. A set of low-temperature heating circuit ("warm floor") is offered as a separate option. It includes a mixing valve, a pump and a temperature sensor. The system allows you to connect not only boilers LUNA-3 Comfort 1.310 Fi and LUNA-3 Comfort Combi, but also any other single-circuit from the series and besides this, boilers LUNA-3 Comfort HT 1.120, LUNA-3 Comfort HT 1.240, LUNA-3 Comfort 1.280.

However, to connect the boiler to the boiler, you need a special kit KSL 714110510.

The fourth generation of boilers starts with a series MAINFour which, in fact, continuation of the MAIN Digit series... Despite its compact dimensions (730 × 400 × 299 mm), the boiler is equipped with a control panel with a wide LCD display. A small size allow you to use the unit in confined spaces.

Gas boilers BAXI ECO Four series

These boilers are also ultra-compact, like the previous ones. Their sizes are the same, however, the series on the basis of which they were released is different - ECO-3 Compact.

Boilers ECOFour are produced as single-circuit and double-circuit. Combustion chambers can be either open or closed. The power of the units reaches 24 kW. The indisputable advantages of this series include ease of maintenance, operation and installation.

And, of course, it was not without a wide LCD display as part of the digital control panel.

New to the market is wall-mounted boiler of the fifth generation MAIN 5.

In addition to the above, BAXI has wall-mounted boilers series LUNA-3, FOURTECH.

Description of the series of wall-mounted condensing boilers from BAXI

Are presented in the company's products and wall-mounted condensing boilers... This series PRIME HT, LUNA HT Residental, LUNA-3 Comfort HT, NUVOLA-3 Comfort HT, Duo-tec Compact, LUNA Duo-tec, NUVOLA Duo-tec, LUNA Duo-tec MP.

The condensing technology of BAXI boilers provides an efficiency of about 110%, which leads to 35% fuel savings per year compared to traditional boilers.

In addition, condensing boilers still manage to operate silently. All thanks to the combustion chamber made of special composites.

LUNA HT Residental Series designed in such a way that the boilers can be connected to each other in a cascade. Thanks to the control units available as accessories, up to 12 boilers can be connected together.

Duo - tec Compact- these boilers are able to adapt to the quality and type of gas, chimney diameter and other parameters . In addition, they include a burner with full preliminary preparation of the gas-air mixture, which allows achieving a power modulation ratio of 1: 7.

LUNA Duo-tec MP- powerful units reaching 110 kW in this parameter. In addition, up to 16 boilers can be operated in a cascade. The modulation ratio of the power of these boilers is 1: 9.

A brief overview of floor-standing gas boilers from BAXI

Floor standing gas boilers Baxi Power HT

Floor standing gas boilers BAXI- these are series POWER HT and POWER HT 230-320, and Slim and Slim HP.

Despite the high power (up to 150 kW), engineers in a series of units POWER HT managed to save compact size... So, all boilers have a width of 45 cm.At the same time, in the series POWER HT 230-320 power increased even more, up to 320 kW... Such boilers are suitable for heating large buildings, for example, office or shopping malls. High durability is achieved through the use of silumin heat exchanger.

Boilers Slim and Slim HP have a cast iron heat exchanger and an atmospheric burner. Power range from 15 to 62 kW. Moreover, in Slim HP There is also fiberglass insulation under the casing to keep heat loss to a minimum.

All the above (and others) boilers can be found in the category:.

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Where gas is consumed

The task of the heating system is to maintain a comfortable temperature in the house. For this, the thermal energy that is released during the combustion of gas in the boiler is constantly spent to compensate for the heat losses of the house.

Gas is spent on replenishment of heat losses in the house:

Heat losses through enclosing structures - walls, windows, doors, attic, basement.
With air expelled through the ventilation system.
With hot water drains into the sewerage system.
Losses in the heating system itself.

Read about how to reduce heat loss through the building envelope and ventilation system on the site in other articles.

Read:

How to reduce high gas consumption and heat losses associated with the operation of the heating system

In this article, we will consider the questions how to reduce heat losses associated with the operation of the heating system... How to reduce the high gas consumption by the boiler for heating the house.

A heating boiler in a private house most often serves as a source of thermal energy for two heat consumers:

Heating systems with a water circuit.
Hot water preparation systems, DHW circuit.

Heat consumption by the heating system

The heating system replenishes the heat losses of the building and maintains a comfortable air temperature in its premises. Heat consumers in the heating system of a private house are usually circuits with radiators and warm floors.

The heating system consumes thermal energy not all year round, but only during the heating season. Moreover, the amount of energy consumed is not constant, but depends on fluctuations in the temperature of the outside air during the heating season.

Thermal energy for heating is consumed continuously, but the amount of energy consumed is constantly changing. The maximum amount of energy consumed may differ from its minimum consumption by ten times or more.

Based on the above, the ideal source of thermal energy for the heating system of a private house must meet the following requirements:

Produce heat energy continuously, without interruption.
Have the maximum performance sufficient to compensate for the heat losses of the house in conditions of the lowest outside temperatures.
Have the ability to regulate the amount of heat energy produced from maximum value to a minimum that differs by a factor of 10 or more.

It should be noted that you will not find ideal heating boilers that meet all these requirements on sale.

My gas consumption is high, but my neighbor's is less. What to do?

It is not worth comparing your gas consumption with what your neighbor says. You never know who says what. There are no miracles.

Think for yourself, where can the heat that is formed in the boiler burner during gas combustion go? Heat from the boiler can only go to the heat exchanger and then to the heating system, or with flue gases to the chimney and to the street.

How can you compare the gas consumption today and yesterday, if the weather (temperature, wind) is always different?

House designs are also different. There may be more heat loss in your house than your neighbor, for example, due to a thinner layer of insulation on the ceiling. Have you seen the thickness of your neighbor's insulation yourself?

Perhaps a neighbor's boiler is controlled by a room thermostat and he keeps a lower temperature in the rooms in the house than you do?

Or his ventilation works differently.

More heat goes into the pipe if the primary heat exchanger of the boiler is clogged on the outside with soot, scale and rust on the inside.

Gas consumption increases if there is low pressure in the gas pipe or if gas of poor quality in composition is supplied.

There can be many reasons. And most likely the neighbor is just a braggart and wants to show his superiority.

In order to reduce the gas consumption, one has to act in many directions, cutting the consumption bit by bit.

Gas consumption depends on the thermal protection of the house, on the outside temperature, on the efficiency of the boiler, on the accuracy of maintaining the temperature in the room. Boiler operation at minimum power, cyclic operation - all this reduces the efficiency of the heating system.

Choosing an economical gas boiler

On the cons of a too powerful boiler

For example, in the service manual of the Protherm Gepard 23 MTV double-circuit boiler, its efficiency in heating mode is indicated: 93.2% at maximum heat output (23.3 kw.) and 79.4% when operating at minimum power (8.5 kw.) Imagine how the efficiency will decrease even if this boiler has to work with a heating system with a capacity of, for example, 4 kw.

Please note that the heating boiler operates at minimum output most of the time throughout the year. At least 1/4 of the gas consumed for heating will literally fly out uselessly into the pipe. This will be a payback for installing too powerful equipment for heating and hot water supply in the house.

Pulse operation, boiler clock

The big difference between the power of a gas boiler and the power heating appliances, among other disadvantages, leads to the operation of the boiler in a pulse mode.

Excessive cyclicality, impulsiveness of work, or, as they say in the people, "clockwork of the boiler" manifests itself in the fact that the boiler produces heat energy per unit of time more than the less powerful heating circuit is capable of accepting. Therefore, the temperature of the water leaving the boiler rises rapidly and it turns off earlier, not having time to heat the radiators.

The boiler burner after switching on quickly turns off when the set temperature in the straight pipe at the outlet of the boiler is reached. But at the same time, the radiators remain not warmed up to this set temperature - the water heated in the boiler simply does not have time to reach the heating devices.

Across a short time the circulation pump supplies the heat exchanger, the remaining cool water from the return pipe of the heating system and the burner turns on again. Then everything is repeated again.

Stroke reduces boiler life and increases gas consumption

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, a circulation pump, a fan of exhaust gases.

For ignition at the moment of start-up, the maximum amount of gas is supplied to the burner. Part of the gas, before the appearance of the flame, literally flies into the pipe. Continuous "re-ignition" of the burner even more increases gas consumption and reduces boiler efficiency.

Working in the "clock" mode significantly reduces the service life of the boiler parts, significantly reduces the efficiency.

Many manufacturers produce double-circuit gas boilers with a maximum power of about 12 kW. and the minimum is less than 4 kW. Such boilers the best way meet the needs of heating and hot water supply systems in small private houses and apartments. However, the amateurish approach - the more powerful, the better, makes many put boilers with a capacity of 24 kW, or even 30 kW.

For the preparation of hot water and heating of houses and apartments with a heated area of up to 120 m 2, with one bathroom, I recommend installing double-circuit gas boilers with a maximum power 12 kW.

Boiler with domestic hot water boiler reduces gas consumption

The heating and hot water system with a double-circuit gas boiler is popular due to its relatively low cost, simplicity and small dimensions. However, it has significant disadvantages that lead to an increase in gas consumption and water, to reduce the comfort of using hot water.

A wall-mounted gas boiler with a boiler is the best option for organizing heating and hot water supply in a house or apartment.

For houses and apartments of large sizes, with an area of more than 120 m 2, I highly recommend using the DHW system with layer-by-layer boiler and a double-circuit boiler, or with indirect heating boiler and a single-circuit boiler.

Gas boiler with open combustion chamber saves gas

Compare the efficiency of gas boilers of the same power and brand, but with different types combustion chambers, with an open combustion chamber (atmosphere) and with a closed (turbo). Find that when not working at full capacity boilers atmo have a higher efficiency than turbo... For example, a Protherm Gepard 23 MOV boiler (atmosphere), at a minimum power of 8.5 kW, has an efficiency of 86.5%. And the same boiler, but turbo, has an efficiency of 79.4%.

In turbo boilers, as a result of the constant operation of the fan, an excess amount of air leaves through the combustion chamber and further into the pipe. And with air, heat is lost and gas consumption increases.

In addition, in turbo boilers, we additionally have energy consumption for the operation of the fan in the smoke exhaust system.

In a private house, it is beneficial in advance, at the construction stage, to provide chimney device for a gas boiler atmosphere with an open combustion chamber.

To increase the efficiency of turbo boilers, some manufacturers equip the boiler with a modulated turbocharging system. The fan of such a boiler changes the rotation speed according to the sensor signal. As a result, only as much air is supplied to the combustion chamber as is necessary for the combustion of the amount of gas supplied to the burner. The absence of a shortage or excess of combustion air minimizes the loss of heat and gas through the flue system. Modulating turbocharging is usually used in luxury boilers.

Correct air supply and fume extraction reduces gas consumption

For burning 1 m 3 gas required ~ 12 ÷ 14 m 3 air? For example, a boiler with a capacity of 18 kw at nominal gas consumption 1.93 m 3 / h combustion air required ~ 25 m 3 / h !

In the mode of lack of combustion air, incomplete combustion of the gas-air mixture occurs. This mode leads to a sharp decrease in the amount of heat released during combustion and to intense formation of soot. Soot settles on the heat exchanger and in a short time can completely clog the gaps between the fins of the heat exchanger.

Incomplete combustion of the gas reduces heat generation, and soot contamination of the heat exchanger makes it difficult to transfer heat from the burnt gas to the heating water in it. All this leads to an increase in gas consumption by the boiler.

Excess air passing through the boiler burner, uselessly takes with it and carries away part of the heat into the chimney, which also increases gas consumption.

In order to reduce gas consumption, it is necessary to ensure that the boiler is supplied with an optimal amount of combustion air.

It is important to save gas

Correctly make the air and smoke supply / exhaust system, as well as timely carry out maintenance work.

System defects can remain invisible to the owners for a long time, but all this time they will increase the gas consumption.

When operating the heating, it is necessary annually, before the start of the heating season, to perform:

Cleaning the boiler heat exchanger from soot.
Monitor the serviceability and eliminate defects in the air supply and flue gas discharge of the boiler.

Check the chimney for tightness of seams and joints, for compliance with the recommendations of the boiler manufacturer of its length and diameter, for the absence of obstructions in the chimney (clogging, icing), for blowing and back draft by the wind (for the location of the chimney head relative to the roof).

Check the free air flow to the boiler burner.

On the boiler burner in case of air shortage the flame becomes reddish yellow.

To adjust and monitor the operation of the burner and the boiler gas outlet, it is convenient to focus on the readings of the gas analyzer, which measures the excess air in the combustion products of the boiler operating at maximum power.

Correct blower and chimney of a gas boiler atmosphere

A gas boiler with an open combustion chamber - atmosphere, takes combustion air directly from the room in which it is installed. Air is sucked into the boiler combustion chamber due to the vacuum generated by the draft force in the chimney. The worse the draft in the pipe, the less air flows to the burner.

Gas boilers with an open combustion chamber and natural smoke exhaust are equipped with a thermostat to control the outlet of flue gases into the room. The thermostat turns off the boiler in the event that the combustion products begin to enter the room as a result of insufficient draft in the chimney.

When the thermostat is triggered, the boiler will be blocked with a corresponding error signal output (see instructions for the corresponding boiler model). Manual unblocking of the boiler should be performed no earlier than 10 min. when the thermostat has cooled down.

The room in which the boiler is installed must be provided with a constant flow of air. The main consumers of air are the exhaust ventilation duct of the room and the burner of the atmospheric gas boiler, which draws in air for combustion directly from the room.

Distinguish between the air flow DIRECT (through the inlets from the street) and INDIRECT (through the inlets from the adjacent room).

In order to provide a sufficient amount of combustion air, the supply systems must be implemented according to certain rules.

Direct air flow from the street performed if the boiler is installed in a separate insulated room. In the boiler room where the atmosphere boiler is installed, there must be an inlet from the street with an area of at least 8 cm 2 for every 1 kw boiler power. But in any case, the area of the hole must be at least 200 cm 2... The hole is placed in an outer wall or street door.

The inlet to the boiler room from the street should be as low as possible, at a height of no more than 300 mm. from floor level. This is a prerequisite for the operation of the boiler on liquefied gas. If natural gas is used and it is not possible to place a hole near the floor in the lower area of the room, then it can be made higher, but the useful area should be increased by about 30 ÷ 50%.

The hole must be fitted with a grid that does not reduce its usable area.

Indirect air flow from an adjacent room can be performed for a gas boiler atmo with a maximum power of not more than 30 kw. when the boiler is installed in the utility room of the house.

In this case, air is used for combustion, which enters the house through the general ventilation system of the building. And the chimney of the boiler, together with the removal of smoke, acts as an additional exhaust ventilation duct, which enhances the exchange of air in the house during the operation of the boiler.

For the flow of air into the room with the boiler, from the adjacent room (corridor, hall) arrange a supply air vent... The hole area should be determined at the rate of 30 cm 2 by 1 kw boiler power. It can be a ventilation grill in the wall or in the door, or just a gap under the door.

It is categorically unacceptable to install the boiler with an open combustion chamber in a room where vacuum can occur as a result of the operation of forced ventilation devices - duct fans, kitchen hoods. The operation of such devices can lead to a shortage of combustion air, to the appearance in the chimney reverse thrust and to stop the boiler.

Check if the inflow is organized correctly fresh air to the house for the ventilation system. This air is also used for gas combustion in the atmosphere boiler.

Boiler chimney with open combustion chamber.
Boilers with an open combustion chamber must be connected to the existing natural draft chimney in the building.

The boiler manufacturer usually indicates requirements for the chimney in the instructions attached to the boiler.

The chimney of an atmosphere boiler must meet the following basic requirements:

The cross-sectional area of the flue duct must be at least the area of the boiler outlet.
The chimney draft should be between 2 Pa up to 30 Pa;
The chimney must be properly insulated to prevent excessive cooling of the flue gases. A decrease in the temperature of the gases in the pipe leads to a deterioration in draft, and therefore to a decrease in the amount of air supplied to the boiler burner, as well as to an increase in the amount of condensate falling out of the flue gases. The risk of a lack of air for gas combustion, the formation of ice plugs and ice in the chimney increases.
Collection and drainage of condensate from the chimney must be provided.
The chimney head must be outside the wind support zone.

Correct air supply and fume extraction in turbo boilers

The removal of gas combustion products from the closed combustion chamber of the turbo boiler is carried out forcibly, by a fan-exhaust fan into the chimney. The air is supplied to the combustion chamber from the street through the air duct, due to the vacuum created by the operating fan.

Gas boilers with closed chamber combustion and forced smoke exhaust are equipped with a pressure sensor, which is triggered when the normal smoke exhaust and combustion air supply stops, in case of a fan malfunction.

The boiler smoke and air duct system is led upwards through the roof, or horizontally through outer wall the room in which the boiler is installed.

Manufacturers of turbo boilers recommend choosing one of two schematic diagrams for the installation of a smoke / air duct system:
– Concentric coaxial system "Pipe in pipe", where the combustion products are removed through an inner metal pipe that runs inside another pipe of a larger diameter. In this case, the combustion air is supplied through the annular gap between the pipes.
– Separate system pipes, where the removal of combustion products is carried out through one pipe, and the inflow of combustion air from the street is carried out through another separate pipe.

The requirements for the construction of the flue and air duct system are set out in the boiler installation and operating instructions.

Do not exceed the maximum possible length smoke / air duct systems. If the flue / air duct system is too long or too many bends, the total air resistance of the flue / air duct system will be too high. The fan will not be able to feed into the burner required amount air.

Chimney sections with outside buildings or passing inside an unheated room with a length of more than 1 m., must be thermally insulated... This will reduce the formation of condensation in the pipes.

In vertical sections of the chimney it is necessary to install a condensate drain- a trap for condensate formed in the chimney, with condensate drainage into the sewer. The horizontal sections of the pipes for flue gas evacuation and combustion air supply must be laid with a slope of 1 - 2% away from the boiler.

The throttling insert in the chimney saves gas

Coaxial flue gas boiler duct. L- see instructions. 1 - sealing ring; 2 - a throttling insert in the fan throat prevents excess air from entering the burner.

With a short length of smoke / air ducts, the aerodynamic resistance of the system will be small. As a result, the amount of air sucked into the burner by the fan may be excessive.

To increase the aerodynamic drag of the system and reduce the amount of air supplied to the burner, in turbo boilers, it is necessary to install a throttling insert - a diaphragm, a diffuser... In addition, the throttling insert reduces the effect of wind on the operation of the burner through the smoke exhaust system.

An example from the instructions for a gas boiler indicating the dimensions of the throttling insert - diaphragm. Connecting the chimneys of the boilers to the collective chimney through the diaphragm ensures the operation of the chimney without overpressure.

In what cases to install and what size the insert should be, it is indicated in the instructions of the boiler manufacturer.

The throttling insert can be used to adjust the optimal air flow and in other cases.

If you rent a gas analyzer that measures the excess air in the combustion products of a boiler operating at maximum power, then by selecting a throttling insert you can achieve an optimal amount of air supply to the boiler.

Optimum combustion parameters are achieved at values of the excess air ratio of about 1.7-1.8. Excess air ratios over 1.8 indicate that excess air is flowing through the boiler.

Correct installation of the throttling insert saves gas.

A boiler with a gas / air regulator consumes less gas

Schematic diagram of the structure and operation of a boiler with automatic regulation of the optimum air / gas ratio with a gas valve Honeywell VK42 .. / VK82 .. SERIES

On sale you can find gas boilers (including double-circuit) for heating private houses and apartments, equipped with an automatic regulator of the optimal air / gas ratio.

In the figure, the gas flow is regulated by the gas valve depending on the amount of air supplied by the fan to the boiler burner. To change the power of the boiler, the automation regulates the amount of air, and the amount of air already changes the gas consumption. The gas flow, as it were, adjusts to the amount of air. This allows an optimal ratio of gas and combustion air to be obtained over the entire power range of the boiler. Coefficient useful action the boiler increases, especially when working on low power... This is important because most of the time the boilers operate at reduced power.

There are gas boilers in which the reverse gas / air regulation algorithm is implemented. The power of the boiler is regulated by the gas flow rate, and already under the gas flow rate, the automation changes the amount of air.

Condensing boiler saves gas

Scheme of operation and device of a condensing gas boiler

How a condensing boiler works

At chemical reaction combustion of gas in the boiler burner produces two main products - carbon dioxide CO 2 and water H 2 O, in the form of steam. Heated up to high temperature combustion products, which additionally include other gases of atmospheric air, give off part of the heat to the heating water in the primary heat exchanger. Flue gases are cooled, but their temperature, including water vapor, after the heat exchanger remains high enough. In a conventional boiler, the heat of the flue gases goes into the chimney and outside.

In a condensing boiler, after the primary heat exchanger, the flue gases pass through another condensing heat exchanger. Heating water from the system first passes through a condensing heat exchanger, is heated in it, and then is fed to the primary heat exchanger, where it is finally heated to the required temperature.

It is known from the school physics course that the process of condensation of water vapor, which is contained in large quantities in combustion products, is accompanied by the release of a significant amount of heat. To get from the flue gases large quantity heat, the temperature regime of the condensation heat exchanger is chosen so that on its surface there is a transformation of steam into water.

The active transformation of steam into water on a condensation heat exchanger occurs when heating water is supplied to it with a temperature of no more than 50 o C... For this reason, condensing boilers work effectively only in systems low temperature heating, with underfloor heating or with radiators operating in the standard 55/45 soft heat mode o C or 50/30 o C... Many owners do not attach due importance to the fulfillment of this condition. As a result, they are disappointed with the acquisition of a condensing boiler. They don't get the expected gas savings.

To switch from standard mode to soft heat, the power (size) of the radiators will have to be increased by about 2 times. Accordingly, the costs of installing a heating system will also increase.

During the condensation process, water reacts with other combustion products and turns into an acid solution. Therefore, heat exchangers and other parts of the boiler that come into contact with condensate have to be made of stainless steel.

By using the higher heat of combustion of gas (i.e. heat of combustion and heat of condensation of water vapor), The efficiency of a condensing gas boiler is 11 - 13% higher than a classic boiler.

Gas level alarms save gas

Automatic gas control system and protection against gas leaks in the boiler room of a private house: 1 - gas contamination signaling device carbon monoxide; 2 - natural gas alarm; 3 - shut-off valve on the gas pipeline; 4 - gas boiler; 5 - a detector in the house, notifies the residents of the house with light and sound.

Since 2016, the building regulations (clause 6.5.7 of SP 60.13330.2016) require new residential buildings and apartments in the premises where gas boilers, water heaters, stoves and other gas equipment are located, install alarms of gas contamination for methane and carbon monoxide(carbon monoxide, CO). For buildings already built, this requirement can be considered a recommendation.

The methane gas detector serves as a leakage sensor from gas equipment household natural or liquefied gas. The carbon monoxide alarm is triggered in the event of a malfunction of the chimney system and the flow of flue gases into the room. Installation of signaling devices allows notice in time a gas leak and irregularities in the operation of the boiler smoke exhaust path.

Gas contamination sensors should be triggered when the gas concentration in the room reaches 10% LEL (lower concentration limit of flame propagation) natural gas and the content of CO in the air more than 20 mg / m 3... Gas contamination alarms must control high-speed shut-off valves installed at the gas inlet to the room and cut off the gas supply at the signal of the gas contamination sensor.

Gas control systems in premises with automatic shutdown of gas supply in residential buildings should be provided when installing gas equipment, regardless of its installation location and capacity.

Heating system return filter reduces gas consumption

Use of a boiler with a heating system, the heating medium of which is mechanically contaminated (sludge, dirt, residues mounting material) can lead to the formation of deposits of dirt, rust particles and scale on the inner surface of the heat exchanger. This leads to disruptions to the heat transfer process, and, as a result, to an increase in gas consumption. In addition, overheating of the heat exchanger tubes takes place and, as a result, premature failure of the heat exchanger.

After installation or repair of the heating system, it is recommended to flush the heating system using special chemicals and the subsequent introduction of a corrosion inhibitor.

It is better to replace steel pipelines and radiators of the heating system with new ones that are not subject to corrosion.

It is not recommended to drain water from the heating system and leave it without water for a long time. Steel parts of the system without water from the inside rust intensively. Fresh water poured into the system contains oxygen, which will add its share of corrosion.

Walls of conventional plastic water pipes gas permeable. Heating water in such pipes is constantly saturated with oxygen from the air. Therefore, in heating systems it is recommended to use special plastic pipes with a protective gas-tight layer (metal-plastic, etc.). Polymer pipes used in heating systems must have an oxygen permeability of no more than 0.1 g / (m 3 day).

Sludge, dirt, corrosion products get into the heating water during installation, repair, filling the heating system with water, as well as are formed there constantly during operation.

To protect boiler parts from dirt, on the return pipe of the heating system in front of the boiler, be sure to install a mechanical cleaning filter.

FMM filter (magnetic mesh clutch filter). The filter is installed at the heating water inlet to the boiler, on the pipeline with the cover downwards horizontally so that the direction of the liquid flow corresponds to the arrow on the filter housing. It is recommended to install shut-off valves before and after the filter, which will allow cleaning the filter without draining the heating water.

A mesh and a magnetic system are installed inside the FMM filter housing. Stainless steel mesh with mesh size 0.5 * 0.5 mm serves to trap mechanical particles from the flow of a flowing liquid. The magnetic system is designed to trap small ferromagnetic inclusions (rust).

To completely clean the FMM filter, you need to remove the cover, remove the mesh and the magnetic system. When re-installing the cover, it is recommended to use a new gasket. It is recommended to clean the filter annually when maintenance boiler.

There are other, externally similar filters on sale, without a magnetic system and / or with a large mesh size. Make no mistake with your choice.

Some boiler models have a built-in strainer at the heating water inlet to the boiler. On the return pipe of the heating system, in front of the boiler, it is recommended to additionally install a filter, which is more convenient to clean than the built-in one.

Two boilers instead of one reduce gas consumption

Each of the heating boilers has a power less than the calculated one for the house. For most of the heating season, one boiler (gas) operates in a mode with a higher efficiency. The electric boiler reserves the work of the gas boiler and supplements the capacity of the gas boiler in cold weather.

When operating at minimum power, the boiler efficiency decreases. Some owners find it beneficial to install two boilers. For example, instead of one 30 kw... put one 20 kw and the second 10 kw... In the off-season, a boiler with a lower capacity works. Then it is turned off and a second, more powerful boiler operates for most of the heating season. Both boilers are turned on only in the coldest frosts. This ensures that the boiler operates at a higher efficiency during the entire heating season.

In addition, the boilers back up each other. The boiler tends to fail at the most inopportune moment, on a weekend or in cold weather, or when the owners are not at home. For the purpose of gas supply redundancy, a boiler of lower capacity is sometimes chosen for a different type of fuel. Such a boiler is turned on for a short time, only in cold weather or during the repair of another boiler. Therefore, the reserve boiler can run on a more expensive type of fuel.

In cold weather, one reserve boiler will not be able to provide thermal comfort in the house. But it won't let you freeze. You can be patient, given that such a coincidence does not happen every year.

Soft heat radiators reduce gas consumption

In the catalogs of manufacturers, the maximum heat transfer of radiators is presented for temperature regime 90/70/20. Where 90 o C- heating water supply temperature; 70 o C- temperature on the return pipe and 20 o C- air temperature in the heated room.

In residential premises, a heating system with radiators, as heating devices, and steel wiring pipes is usually calculated for a temperature regime of 80/60/20. Such a sufficiently high-temperature mode allows you to increase the heat transfer of radiators, choose radiators and pipes minimum size, which means to reduce their cost.

In modern radiator heating systems with plastic pipes, a temperature regime of 75/65/20 that is more gentle for pipes is usually used.

The picture above shows the standard temperature regime of the radiator in systems with plastic pipes. Below are the maximum radiator temperatures for comfortable soft warmth.

If we set ourselves the goal of saving heating costs, it turns out that in radiator heating systems, it is beneficial to use a mode with lower temperatures... For example, European standard soft heat 55/45/20.

It is known that the greater the difference between the temperature of the gases in the boiler burner and the temperature of the water in the heat exchanger, the more intensive is the process of heat transfer from hot to cold. The lower the temperature of the flue gases, the more heat remains in the house and the less it escapes into the chimney.

The mild temperature regime also makes it easier to arrange a combined heating system with radiators and warm floors. Thermal comfort in a home with soft heat radiators becomes more pleasant for the person.

The main advantage of low-temperature heating is the possibility of using modern technologies. This is about condensing boilers, solar collectors and heat pumps. They require that the system has a low temperature of heating water.

True, to switch from standard mode to soft heat, the power (size) of the radiator will have to be increased by about 2 times.

The correct meter on the gas pipe saves gas

Household gas meters, as a rule, do not have pressure and temperature sensors, and do not correct their readings when these parameters change in the gas pipe.

The amount of gas is determined by its mass and is measured in units of measurement G, Kg, or T... Calorific value - the amount of thermal energy released during the combustion of gas also depends on the mass of the burnt gas.

But the gas meter on the pipe does not take into account the mass of the gas, but the volumetric flow rate of the gas in m 3 passed through the counter. And from the school physics course it is known that the amount of gas kg, in 1 m 3, very much depends on the pressure and temperature of the gas at the time of passing through the meter.

It is accepted that the measurement results of the volumetric flow rate lead to the same standard conditions: pressure 101.325 kPa (760 mmHg.), gas temperature 20 ° C.

Thus, a cubic meter for the purposes of accounting and payments for gas is the amount of dry gas that occupies a space with a capacity of one cubic meter at a temperature of 20 o C and absolute pressure 101.325 kPa.

Industrial gas meters are equipped with pressure and temperature sensors that allow to take into account this dependence and determine the amount of gas consumed under standard conditions and with high accuracy.

Household gas meters, as a rule, do not have pressure and temperature sensors, and do not correct their readings when these parameters change in the gas pipe. Uncorrected gas meter shows gas consumption under operating conditions(i.e. pressure and temperature are different from standard).

It is believed that in gas network low pressure (less than 0.05 bar or 5 kPa) gas services by technical means must limit pressure fluctuations in the gas network in a fairly narrow range, within 15 mbar... That's why, the influence of these pressure changes on the accuracy of determining the gas flow rate can be neglected. And to bring the meter flow readings to standard pressure conditions, a constant correction factor is used.

Applying pressure correction for household appliances is not considered profitable also because such meters are expensive, less reliable and difficult to operate.

But is this all true in real life?

Real gas distribution networks are often long and insufficient throughput, which leads to significant pressure fluctuations in the distant sections of the network when gas consumption changes. Seasonal pressure changes are especially large, especially in frosts, when gas consumption increases sharply.

According to the norms in the supply line, there should be a maximum dynamic pressure gas 25 mbar(255 mm water column). If you are lucky, and this is indeed the case, then the gas meter will display the gas consumption, which almost coincides with the real one. Those. measurement error will be negligible.

If your neighbor is unlucky, and the dynamic pressure in the gas supply pipe will be at the minimum permissible for the boiler 15 mbar., then, other things being equal, the meter will show a flow rate higher than the real gas flow rate by about 12%. Those. at actual flow rate 1 m 3, the counter will show the result 1.12 m 3... And if in cold weather the pressure in the gas pipe drops below the standard, for example, to 11 mbar, then the gas meter instead of actually consumed 1 m 3 gas, will show an increase even more.

The lower the pressure in the gas network, the more profitable the gas business. They do not advertise such a profit. The population is not offered any pressure adjustment options. And the population does not demand this.

The situation is completely different with the adjustment of the readings of household meters to standard temperature conditions. Gas meters, without temperature correction, underestimate gas consumption in winter. In order not to lose income, gas businessmen came up with and approved temperature coefficients.

To bring it to standard conditions, the gas volumes passed through the meter without a thermocorrector are multiplied by the temperature coefficient. The size of the coefficient is approved for each region.

It is worth explaining separately that the temperature coefficient applies only to the readings of metering devices installed outside heated premises (on the street). Since they receive gas, either cooled by winter temperatures, or "warmed up" summer heat... If the meter is installed in a heated room - in a house, in an apartment - the coefficients are not applied.

For those who have gas meter stands on the street, the temperature coefficient is in middle lane for the summer months 0.96 - 0.98, and in winter about 1.15, and on average about 1.1 per year. The coefficient is applied on a monthly basis, without taking into account the actual temperature of the supplied gas. The volume of gas payable for the month is calculated as the product of the gas volume by the meter for the given month and the corresponding temperature coefficient.

The gas business pays for the calculation and justification of temperature coefficients. It is clear in whose favor they are calculated.

To avoid the use of temperature coefficients when paying for gas, it is better to install a meter with a thermocorrector, which will automatically determine the gas consumption in accordance with its real temperature. This is especially true for those who consume increased volumes of gas, for example, for heating a house and heating water. A meter with a thermocorrector often has the letter "T" in the name of the meter model, for example, VK-G4T.

Quality gas in the gas pipe reduces gas consumption

The amount of thermal energy released during gas combustion also depends on the gas quality indicators. Natural gas that enters the boiler from the gas pipe is not homogeneous in composition. In addition to methane, it may contain other flammable gases, as well as water vapor, atmospheric gases and other impurities. Depending on the ratio of these components, the heat of combustion of the gas and its consumption change.

Gas wall-mounted boiler Baxi Eco Four 24 of the fourth generation. The model is characterized by ease of installation, simple maintenance and versatility of operation. The use of modern technological innovations makes use comfortable and safe: a wide liquid crystal display constantly displays in real time Current state boiler, maintains automatically set parameters, produces an emergency shutdown in the event of a drop in water pressure or gas pressure.

Description of the gas wall-mounted boiler Baxi Eco Four 24

Baxi Eco Four 24 is a 2400 W high power two-circuit turbo boiler.
A modified copy of the well-known to users of the series of compact units ECO-3 Compact.

The model has been improved without increasing the compact design, the dimensions are kept within 730 x 400 x 299 mm.
Closed combustion chamber.
The brass hydrogroup increases the cost of the unit, but extends the service life by 100% compared to conventional metal water lines.
Control and control are push-button. The buttons are located on the front panel.
LCD screen for information on the operating status of the speaker. Highlighting and tabulation are clear and easy to read. Serves to provide information in real time and to set the mode.
The boiler with a turbo system is easy to operate and easy to maintain.

Technical Parameters Baxi Eco Four 24

The maximum value of the useful thermal power is 2400W.
The minimum value of the useful heat output is 9300 W.
The maximum power consumption is 2580 watts.
The minimum power consumption is 1060 watts.
The type of energy carrier used is natural or liquefied gas.

The maximum consumption of natural gas is 2730 l / h.
The maximum consumption of liquefied gas is 2000 l / h.
Maximum efficiency 92.9%.
Working at a third of the strength gives power with an efficiency of 90.4%.
Expansion tank filling pressure from 6 to 8 l / bar.
The temperature range of heating in the circuit is from 35 to 60 C.
Productivity for hot water with a temperature of 25 C 13.7 l / min.
Productivity for hot water with a temperature of 35 C 9.4 l / min.
The minimum water supply to the DHW circuit is 2 l / min.
Pressure in the GBC circuit max | min 8 | 0/15 bar.
Flue exhaust pipes: coaxial diameter 6-10 cm, separate 8 cm.
Maximum total length outlet pipes: coaxial 500 cm, separate 3000 cm.
Recommended natural gas pressure 13-20 Mbar.
Power supply 130 W, 230 V.
According to the degree of electrical protection, the class is IPX5D.
Dimensions 40 x 73 x 29.9 cm.
Weight 36 kg.

Description of the gas system of the turbo boiler Baxi Eco Four 24

High efficiency performance on both natural and LPG.
Continuous, uninterrupted electronic flame support in GBC and heating modes.
Ignition is smooth, electronic.
The boiler has been adapted to work in local regions. Provides stable performance at a pressure drop of up to 5 Mbar.
Stainless steel burner divider.
The system of supply and regulation of air flow is patented.

Description and characteristics of the hydraulic system Baxi Eco Four 24

Control of hot water consumption with a separate water meter.
The copper heat exchanger for the primary stage is additionally protected against corrosion.
The circulating pump, energy-saving, with built-in automatics on the air vent.
The secondary stage plate heat exchanger is made of stainless steel alloys.
Valve made of brass, 3-way, electrically actuated.
Manometer with a convenient scale and graduation.
Baylas is automatic.
Post-circulation pump.
Login filter cold water... Cleans from large particles up to 5 microns.
The automatic system tests the column for anti-blocking of the pump and three-way valve after 24 hours.
It is possible to reconnect to solar collectors.

Features of temperature control of the Baxi Eco Four 24 boiler

Temperature indication is digital.
The function of connecting a programmable timer and a thermostat for internal use is provided.
Automation taking into account the weather conditions outside. It is possible to connect a sensor to display information about the temperature outside.
Regulation and automatic support of the temperature regime in the heating circuit of GBC.
Dual-range temperature control in heating system from 35 C to 85 C. It is possible to use the column for the underfloor heating system from 30 C to 45 C.

Monitoring and safety when using the Baxi Eco Four 24

Liquid crystal display with push-button control.
Self-diagnostics of the system is electronic.
If the user wishes, the system blocking signal is output to the dispatching console.
Control of combustion and flame composition using an ionization system.
Primary heat exchanger with a safety thermostat against overheating and boiling of water in the system.
A special sensor for controlling the type of pneumatic relay for the removal of combustion products.
Insufficient water pressure triggers the pressure switch.

BAXI is an Italian company that is included in the list of the largest manufacturers heating equipment... The history of the company goes back almost a hundred years, and its products are exported to more than 70 countries around the world. In Russia, a representative office of this brand has existed since 2002 and a network of representatives (service centers and service partners) in different regions Russia has a total of more than 300 organizations. This suggests that the BAXI equipment is quite in demand and popular in the Russian market. So, after a quick digression into history, we will consider:

Features of double-circuit gas wall-mounted boilers BAXI

Double-circuit models of gas boilers are designed for use in the heating system and also for preparing hot water. Depending on the configuration, the devices can be equipped with either one or two heat exchangers. The features of BAXI gas boilers include:

a wide range of models, i.e. the ability to choose a model for almost any project
application of simple and reliable technical solutions in conjunction with good quality assemblies
maintainability and availability of spare parts
acceptable price

In the line of the model range of wall-mounted gas boilers BAXI, there are more than 10 different models of traditional boilers (not counting condensing ones). It is noteworthy that even in "budget" models, the equipment of the boilers is not inferior to expensive competitors. The use of weather-dependent automation is reduced to connecting a conventional temperature sensor.

With the exception of two models, wall-mounted BAXI boilers are equipped with two heat exchangers: the main one, which is traditionally located above the burner of a gas boiler, and the secondary - plate, designed for hot water preparation. In principle, such a device does not differ from other boilers. The main heat exchanger is made of high quality copper coated protective coating, secondary - from stainless steel.

When choosing equipment, you should pay attention to the fact that double-circuit models of boilers can also be performed with one heat exchanger (the main one is bithermic), in which the heating circuit and hot water supply (pipe in pipe) are combined.
These models are cheaper, but they can be more expensive to operate. more demanding on water quality. The scale formed over time inside will make it impossible to operate the boiler as a whole and will lead to unplanned costs, comparable in cost to half the initial price of the boiler.
BAXI boilers are equipped with circulation pumps Grundfos or WILO, and these are well-known world manufacturers of reliable and trouble-free pumping equipment. In most cases, their performance will be sufficient even for heating systems of a small private house. They work quietly, equipped with an automatic air vent, which is not a special feature.
Concerning gas automation, the equipment can be completed with Honeywell or SIT valves. According to surveys of service specialists, they are very reliable and rarely fail.

The material for the manufacture of a three-way valve (a device that switches between heating and hot water supply) brass is undoubtedly more reliable than plastic counterparts, although the trend of manufacturers in this moment goes towards composite materials.
The fan of turbocharged models is structurally located at an angle in relation to the chimney, which prevents the spontaneous spinning of the blades under the influence of natural draft and excludes possible additional loads to overcome it during the boiler start-up.
Separately, it should be said about BAXI electronics due to complaints and negative reviews on the network. It is possible that the electronics of these boilers are more sensitive to the quality of the power supply, operating conditions (humidity in the room) and the effects of overvoltages, i.e. to the harsh operating conditions of Russian reality. But, with all this, the boards have the best maintainability, availability in terms of availability and price.
It is possible that motherboards from some well-known German manufacturers are more reliable, but this reliability very often makes it impossible to recover the motherboard, for example, due to processor damage, and the retail price of such a “reliable” motherboard is much higher. It should be noted that in most cases, electronics are reliable and do not break by themselves.
It should also be noted that the boards are universal and equipped with a liquid crystal display. For some manufacturers, they are separate and incompatible, which affects availability and maintainability.
In general, we believe that BAXI boilers have good ratio price quality. Some models, due to their popularity, are not even taken out of production, which indicates the achievement of certain success and confidence on the part of consumers.
Baksi's latest retail price announcement (from September 1, 2017) indicated that the MAIN FOUR and FOURTECH models were discontinued.

ECO FOUR and ECO 4S

Probably the most popular BAXI boiler in Russia is the Baxi Eco Four 24. Easy to maintain and operate, well assembled. Hydraulic group made of brass and secondary plate heat exchanger made of stainless steel, continuous smooth flame modulation, works quite quietly.
The real gas consumption for heating an apartment is no more than 250 m3 per month, even in the most very coldy, which undoubtedly confirms the efficiency.
The turbine sensor of the DHW flow allows you to accurately regulate the water temperature - it is enough to set a comfortable value once (for example, for me it is 39 degrees) and no longer return to the settings. The ECO 4S model replaced BAXI FOURTECH, it differs in a hydrogroup of composite material.

MAIN 5 and ECO 5 Compact

Easy access to all components, the location of the expansion tank has been changed - now it is inside the case, which means easy control and maintenance. The design of the boiler body is made taking into account the maximum noise reduction in order to increase the comfort during the operation of the boiler. Internal components are placed in a sealed chamber. New compact combustion chamber and burner, variable speed fan and flue gas temperature sensor. Reduced power consumption.
In the version with a bithermal heat exchanger, a constructively new solution is used: two collectors, reduced tube length, more channels without the use of turbulent rates. According to experts, this contributes to better self-cleaning of the inner surface and increases the service life, as well as reduces the noise level.
A DHW sensor with a flow meter allows you to more accurately regulate the water temperature. Also, in these models, emphasis is placed on increasing the protection of the control board!

LUNA 3 Comfort

The boilers of this series are equipped with a remote control panel with the possibility of programming. As an option, communication with the boiler can be organized via a radio channel (wireless option).
According to the manufacturer, boilers of this series are equipped with improved primary heat exchangers with high heat transfer, which increases energy efficiency and reduces gas consumption. Also a feature of this series is a hydraulic group made entirely of brass and a three-speed energy-saving Grundfos pump.
In short, LUNA is maximum reliability and comfort. At the time of this writing, retail prices start at EUR 969 for a 24 kW model.

Today the range of gas boilers on the market is quite large. It will not be difficult to choose what would suit in terms of the ratio of price, quality and required characteristics, the main thing is to decide on the model.

Today we will introduce you to Baxi gas boilers of wall-mounted and floor type and model range boilers of this brand, so that you can make it easier for yourself the process of buying a gas boiler.

Advantages and features of gas boilers Baxi

The heating appliance manufacturer Baxi claims that in these gas boilers all advanced technologies are embodied combined with rich experience. Baksi gas boilers are efficient and reliable, they have optimal performance and can be purchased at a reasonable price.

The range of Baksi heating devices is very extensive: there are wall-mounted Baksi boilers with different functions and floor-standing boilers, they can also be both single-circuit and double-circuit, there are models with a built-in boiler. There are powerful gas units that are designed for large areas and designed for installation in special boiler rooms, and there are compact models for standard apartments and private houses, the installation of which in the kitchen is as simple as possible. The price of Baxi gas boilers depends on the model, size and characteristics.

In general, such advantages of all models of gas boilers Baxi:

Most often buyers prefer wall-mounted boilers "Baksi"... They are easy to use, look efficient and fit into any interior. Compared to floor-standing models, wall-mounted boilers are lightweight and economical.

Installation of the wall-mounted Baxi boiler is quite simple, and most of the models are equipped with a system electronic control... Anyone can choose a boiler at an affordable price for themselves, because there are both budget models and elite-class boilers on sale.

Common models of gas boilers Baxi

We bring to your attention a detailed description and technical characteristics of different models of wall and floor heating brands Baxi.

Baxi eco four 24: key features

This model under the Baxi brand has an affordable price and belongs to the category "economy"... The wall mounted gas boiler is quite compact and has a maximum power of 24 kW. Therefore, it is perfect for small apartments and small private houses.

The single-circuit modification has a copper heat exchanger, so it is not subject to corrosion and the influence of an aggressive medium of the heat carrier, it can serve for a rather long time. A double-circuit boiler is equipped with a plastic second heat exchanger, which is made of stainless steel. Such a device does an excellent job of heating water for household needs, and it will not need to be repaired periodically.

Besides, model Baxi four 24 has the following specifications:

And all this is complemented by an acceptable and affordable price for everyone and uninterrupted functionality of the device. You can install this wall-mounted Baksi device with your own hands, if you act strictly according to the attached instructions.

Gas boilers Baxi main: design features and applications

The Baxi main 5 model belongs to the new generation of boilers. It is double-circuit, with its help you can heat the room and at the same time heat the water. This heating device is wall-mounted, compact, but at the same time has a good power up to 24 kW... A distinctive feature of this model is the presence of a bimetallic heat exchanger, thanks to which the unit can be used for a sufficiently long time.

The steel core has direct contact with the coolant and has high anti-corrosion properties. The body of a gas boiler has an increased level in terms of energy transmission, therefore, it is very beneficial from an economic point of view. The best option its installation - heating of apartments in multi-storey buildings.

Specifications of this wall model according to the instructions are as follows:

good adaptation to use in conditions Russian systems heating;
the ability to work even at a gas pressure of 5 bar;
the presence of electronic control of modulation of fire, both for the heating system and for the DHW circuit;
the ability to regulate the temperature of the coolant from 35 to 80 degrees. You can also closely monitor the constancy of the temperature in the heating system and the DHW circuit, which makes this model very convenient in terms of use;
safety of equipment use.

As you can see, this model has excellent performance characteristics, is easily adaptable to Russian heating systems, and the price of such a design is also quite commensurate with its capabilities. When buying, be sure to make sure that you have a certificate that confirms the originality of the product.

Description of the model of the gas boiler Baxi slim

This Baxi slim model is quite unique. Despite the fact that she is outdoor, in terms of its compactness and weight, it does not differ from wall structures.

The gas boiler of the presented model has a cast iron heat exchanger, which means that the unit has a long service life. According to the instructions, the manufacturer declares the boiler's uninterrupted operation for 25 years. The model has modifications that are very diverse in terms of size and power, which can vary from 15 to 62 kW, depending on the selected modification.

Thanks to such indicators, with the help of such a boiler, you can safely start organizing the system heating in any type of house without the need for separate equipment for the boiler room.

Also, the model range of gas floor standing boilers Baxi slim has the following characteristics:

the ability to fully control the operation of the heating element in electronic mode;
the presence of a built-in boiler that heats the water, and is additionally equipped with a separate circulation pump;
the ability to constantly monitor that the temperature in the heating system and the hot water circuit does not change;
according to the instructions, the kit includes a burner based on stainless steel, which can be controlled automatically;
a double-circuit boiler of the specified model is equipped with safety valve in the hot water circuit and a separate valve in the heating system.

Description and characteristics of wall-mounted gas boilers Baxi Nuvola 3 Comfort and their modifications 240 Fi and 320 Fi

Series of double-circuit wall-mounted gas boilers Baxi Nuvola 3 Comfort differs in such general characteristics for all its modifications:

the presence of electronic ignition;
equipped with a patented air supply system;
the ability to switch the heating system to work from liquefied gas;
availability of electronic control;
the ability to operate models in extreme conditions.

There are several modifications of this series, however, the most popular among them is the Nuvola 3 Comfort 240 Fi wall-mounted type with a protective system. Her the key specifications are:

The average price for this model on the territory of the Russian Federation is from 46 thousand to 57 thousand rubles depending on the seller and the region of the country.

Another modification of this series - Nuvola 3 Comfort 320 Fi belongs to the "elite" class and has the following characteristics:

the heating capacity of the boiler is 34.5 kW;
hot water productivity is 18.3 liters per minute;
minimum gas consumption - 3.65 cubic meters per hour;
the heat exchanger is made of high quality stainless steel;
closed combustion chamber;
the presence of a removable digital panel, which also serves as a temperature sensor;
storage type boiler with a volume of 60 liters, also made of stainless steel.
The average market price of such a gas boiler is about 60 thousand rubles.

Description and characteristics of the wall-mounted boiler Baxi Luna

The Baxi Luna series of wall-mounted gas boilers is distinguished by its reliability and affordable prices for its models. One of the most popular modifications presented in this series is Luna 3 280 Fi... Below is its description and characteristics:

The price of such a unit, depending on the distributor and the region, varies around 36 thousand rubles.

So, we told you what the Baksi gas boilers are, you familiarized yourself with the key characteristics of the most popular models and found out what are the average prices for the products of this brand.