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

This article outlines what trademark Baxi, information on the manufacturer, as well as the main specifications each series Baxi gas boilers.

General information on the manufacturer of gas equipment BAXI

BDR Thermea occupies a leading position in the world as a manufacturer of high-tech heating and hot water 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 US. The company's products can be purchased in more than 70 countries.

BDR Thermea has chosen the following strategy for itself: promotion of local brands with strong positions in 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 based on innovative technologies.

Products under the Baxi brand

The company claims that Boilers Baxi embodied the latest technologies and rich experience accumulated by the corporation over the years of work. Maximum efficiency combined with a reasonable price gives the best working qualities.

You can read more about each boiler of this brand by selecting it in one of the relevant headings:, or, where, by selecting the one you are interested in boiler, you can read it reviews, look parameters, download instructions and get to know other nuances on specific boiler.

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

Gas boilers BAXI series LUNA-3 COMFORT

Baxi gas boilers of the 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 the boilers of this series is equipped with an electronic flame modulation system, electronic ignition and steel flame dividers. 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 heat exchanger in stainless steel. There is also a pressure gauge, a filter at the water inlet from the network, 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 outdoor temperature sensor, and then the heating mode will be guided by the outdoor temperature.

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

Specifications				LUNA-3 COMFORT AIR 250Fi	LUNA-3 COMFORT AIR 310Fi
	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% of 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	close	close	open	close	close	close	close	open
Temperature control range in the DHW circuit, °C	35-65	35-65	35-65	35-65	35-65	-	-	-
Nominal inlet gas pressure, mbar	13-20	13-20	13-20	13-20	13-20	13-20	13-20	13-20
Electrical 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 series LUNA-3 Silver Space

Wall-mounted boilers of this series are designed for outdoor operation. The boilers can operate down to -15 °C.

Gas system LUNA-3 Silver Space similar to boilers .

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

Also boilers Silver Space have a device remote control with climate control.

Otherwise, 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 240Fi
Max. useful thermal power, kW	31	24
Min. useful thermal power, kW	10,4	9,3
Max. consumed thermal power, kW	34,3	26,3
Min. consumed thermal power, kW	11,9	10,6
Max. consumption of natural (liquefied) gas, 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	close	close
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 series Nuvola-3 B40

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

The volume of the built-in boiler is 40 l, the body material is AISI 316L enamelled steel.

If there is not enough water pressure, the pressure switch will work. There is also a system of protection against freezing of water 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. The boilers of this series are equipped with 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.

BAXI gas boilers of the 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 the boilers of this series 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 elegant design and compact size did not prevent the designers from making connecting the boiler to the boiler simple. As a separate option, a set of low-temperature heating circuits (“warm floor”) is offered. It consists of 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 a 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 will need a special kit KSL 714110510.

The fourth generation of boilers begins with a series MAINFour, which is, 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 the unit to be used in confined spaces.

Gas boilers BAXI ECO Four series

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

Boilers ECOFour Available in both single and double sided. Combustion chambers can be either open or closed. The power of the units reaches 24 kW. The undeniable 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 a 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 boilers series LUNA-3, FOURTECH.

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

Presented in the company's products and wall mounted condensing boilers. This is a 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%, resulting in fuel savings of 35% per year compared to traditional boilers.

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

LUNA HT 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, the diameter of the chimney and other parameters . In addition, they include a burner with complete pre-treatment of the gas-air mixture, which makes it possible to achieve a power modulation factor of 1:7.

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

Brief overview of floor gas boilers from BAXI

floor standing gas boilers Baxi Power HT

Floor standing gas boilers BAXI is a series POWERHT and POWERHT 230-320, as well as Slim and Slim HP.

Despite the high power (up to 150 kW), engineers in a series of units POWERHT managed to save compact dimensions. 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 complexes. High durability is achieved through the use of silumin heat exchanger.

Slim boilers and Slim HP have a cast-iron heat exchanger and an atmospheric burner. Power range ranging from 15 to 62 kW. And in Slim HP There is also fiberglass insulation under the shell to keep heat loss to a minimum.

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

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Where does the gas go

The task of the heating system is to maintain a comfortable temperature in the house. To do 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 used for replenishment of heat losses in the house:

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

Read about how to reduce heat loss through building envelopes and ventilation systems on the website 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 loss associated with the operation of the heating system. How to reduce the high gas consumption of a boiler for heating a 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 circuits.

Heat consumption of the heating system

The heating system compensates for 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 outdoor temperature 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 can 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.
To have the maximum performance sufficient to compensate for the heat losses of the house in the conditions of the lowest outdoor temperatures.
To be able to regulate the amount of heat produced from maximum value to a minimum that differs by 10 times 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, and my neighbor's is less. What to do?

You should not compare your gas consumption with what your neighbor says. Few people say what. Miracles don't happen.

You yourself think about where the heat that is formed in the burner of the boiler during the combustion of gas can go? Heat can leave the boiler only to the heat exchanger and then to the heating system, or with flue gases to the pipe and to the street.

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

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

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

Or does the ventilation work differently.

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

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

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

To reduce gas consumption, one has to act in many directions, reducing consumption bit by bit.

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

Choosing an economical gas boiler

About the cons of a too powerful boiler

For example, in the service manual for 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 more 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 power most of the time during the year. At least 1/4 of the gas used for heating will literally fly out uselessly into the pipe. This will be a retribution for installing too powerful equipment for heating and hot water in the house.

Pulse operation mode, boiler clocking

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 pulsed mode.

Excessive cyclicity, impulsiveness of work or, as the people say, “boiler clocking” It manifests itself in the fact that the boiler produces more thermal energy per unit of time than a less powerful heating circuit can accept. Therefore, the water temperature at the outlet of the boiler rises rapidly and it turns off earlier, not having time to heat the radiators.

The burner of the boiler, 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 with the remaining cool water from the return pipe of the heating system and the burner turns on again. Then everything repeats again.

Clocking reduces the life of the boiler 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, an exhaust gas fan.

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

Operation in the "clocking" mode significantly reduces the 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 systems of small private houses and apartments. However, the amateurish approach - the more powerful the better, makes many install boilers with a capacity of 24 kW, and even 30 kW.

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

Boiler with hot water tank 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 in a house or apartment.

For houses and apartments of large sizes, with an area of more than 120 m 2, highly recommend to use the hot water system with stratification boiler and double-circuit boiler, or with indirect heating boiler and single boiler.

Gas boiler with an 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 (atmo) and with a closed one (turbo). Detect that when running at less than full power atmospheric boilers have a higher efficiency than turbo. For example, a Protherm Gepard 23 MOV (atmo) boiler, 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 escapes through the combustion chamber and further into the pipe. And heat is lost with air and gas consumption increases.

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

In a private house, it is advantageous to provide in advance, at the construction stage, 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, exactly 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 lack or excess of combustion air minimizes the loss of heat and gas through the flue system. Modulated turbocharging is usually equipped with luxury boilers.

Proper air supply and smoke 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 a nominal gas flow rate of 1.93 m 3 / h combustion requires air ~ 25 m 3 / h !

In the mode of lack of air for combustion, 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 the intensive formation of soot. Soot settles on the heat exchanger and is able to completely clog the gaps between the heat exchanger finning plates in a short time.

Incomplete gas combustion 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 burner of the boiler, 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 optimal amount of combustion air is supplied to the boiler.

It is important to save gas

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

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

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

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

Check the chimney for the tightness of seams and joints, for compliance with the recommendations of the boiler manufacturer for its length and diameter, for the absence of obstacles in the chimney channel (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 with air deficiency the flame becomes reddish-yellow.

To set up and control the operation of the burner and the flue gas path of the boiler, it is convenient to focus on the readings of the gas analyzer, which measures the excess air in the combustion products operating at the maximum power of the boiler.

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 combustion chamber of the boiler due to the vacuum created by the draft force in the chimney. The worse the draft in the pipe, the less air enters the burner.

Gas boilers with an open combustion chamber and natural smoke exhaust are equipped with a thermostat for controlling the exit of flue gases into the room. The thermostat switches off the boiler when 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 the corresponding error message (see instructions for the respective boiler model). Manual unblocking of the boiler must be carried out no earlier than after 10 min. when the thermostat cools down.

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

There are DIRECT air inflows (through air inlets from the street) and INDIRECT air inlets (through air inlets from an adjacent room).

In order to provide sufficient air for combustion, the supply systems must be designed according to certain rules.

Direct air intake from outside performed if the boiler is installed in a separate isolated room. In the boiler room where the atmospheric 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 hole area must be at least 200 cm 2. The hole is placed in the 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 zone of the room, then it can be made higher, but the usable area should be increased by about 30÷50%.

A grating should be installed on the hole that does not reduce its usable area.

Indirect air intake from an adjacent room can be made for an atmospheric gas boiler 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 building's general ventilation system. And the chimney of the boiler, together with the removal of smoke, acts as an additional exhaust ventilation channel that enhances the exchange of air in the house during the operation of the boiler.

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

It is strictly unacceptable to install a boiler with an open combustion chamber in a room where a vacuum may 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 of reverse thrust and stop the boiler.

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

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

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

The chimney of the atmospheric boiler must meet the following basic requirements:

The cross-sectional area of the smoke channel must not be less than the area of the boiler outlet pipe.
The draft in the chimney must 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 hence to a decrease in the amount of air entering the boiler burner, as well as an increase in the amount of condensate falling out of the flue gases. The risk of lack of air for gas combustion, the formation of ice plugs and ice in the pipe increases.
Condensate must be collected and drained from the chimney.
The head of the chimney must be located outside the zone of wind backwater.

Proper air supply and smoke 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. Air is supplied to the combustion chamber from the street through an air duct, due to the vacuum created by a working fan.

Gas boilers with closed camera 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 violations in the operation of the fan.

The flue system of the boiler is led upward 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 basic schemes for installing a smoke / air duct system:
– Concentric coaxial system “pipe in pipe”, where the exhaust of combustion products is carried out through an internal metal pipe passing 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 arrangement of the flue and air duct system are set out in the installation and operation instructions for the boiler.

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

Chimney sections with outer side 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 condensate in the pipes.

On vertical sections of the chimney you need to install a condenser– a trap for condensate formed in the chimney, with condensate discharge to the sewer. The horizontal sections of the pipes for flue gas removal and combustion air supply must be laid with a slope of 1-2% away from the boiler.

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 neck prevents excess air from being supplied to 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 drawn into the burner by the fan may be excessive.

To increase the aerodynamic resistance 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 flue system.

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

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

The throttle insert can be used to set the optimal air supply 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 the supply of the optimal amount of air to the boiler.

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

Correct installation of the throttling insert saves gas.

Boiler with gas/air regulator consumes less gas

Schematic diagram of the design and operation of the boiler with automatic adjustment of the optimal air / gas ratio with a gas valve Honeywell VK42.. / VK82.. SERIES

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

In the figure, the gas flow is regulated by a 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 gas flow is already changing from the amount of air. Gas consumption, as it were, adjusts to the amount of air. This allows you to get the optimal ratio of gas and combustion air in the entire range of boiler power. Coefficient useful action 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 control algorithm is implemented. The power of the boiler is regulated by the gas flow, and already under the gas flow, 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 gas combustion in the boiler burner, two main products are formed - carbon dioxide CO 2 and water H 2 O, in the form of steam. heated 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 quite high. In a conventional boiler, the heat of the flue gases goes into the chimney and out into the street.

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 the condensing heat exchanger, is heated in it, and then is fed into the primary heat exchanger, where it is finally heated to the required temperature.

It is known from a 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. In order to obtain from the flue gases large quantity heat, the temperature regime of the condensing heat exchanger is chosen so that steam is converted into water on its surface.

Active conversion of steam into water on the condensing heat exchanger occurs when heating water is supplied to it with a temperature of not more than 50 about C. For this reason, condensing boilers work effectively only in systems low temperature heating, with underfloor heating or with radiators operating in standard soft heat mode 55/45 about C or 50/30 about C. Many owners do not attach due importance to the fulfillment of this condition. As a result, purchasing a condensing boiler brings them frustration. They don't get the expected gas savings.

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

During the condensation process, water reacts with other products of combustion 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 calorific value of gas (that is, the heat of combustion and the heat of condensation of water vapor), The efficiency of a condensing gas boiler is 11 - 13% higher than a classic boiler.

Gas detectors save gas

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

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

The methane gas detector serves as a leakage sensor from gas equipment domestic natural or liquefied gas. The carbon monoxide alarm is triggered in case of malfunctions in the chimney system and the ingress of flue gases into the room. Installation of signaling devices allows timely notice gas leakage and malfunctions in the operation of the smoke exhaust path of the boiler.

Gas 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 is more than 20 mg / m 3. Gas detectors must control quick-acting shut-off valves installed on the gas inlet to the room and turn off the gas supply on a signal from the gas detector.

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

The filter on the return pipe of the heating system reduces gas consumption

Using the boiler with a heating system whose coolant is mechanically contaminated (sludge, dirt, mounting material) can lead to deposits of dirt, rust particles and scale on the inside surface of the heat exchanger. This leads to violations of the heat transfer process, and, as a result, to an increase in gas consumption. In addition, there is overheating of the heat exchanger tubes 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 followed by the addition 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 the water from the heating system and leave it for a long time without water. The steel parts of the system without water from the inside rust intensively. Fresh water poured into the system contains oxygen, which will add its portion of corrosion.

Walls of ordinary 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 not 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 formed there constantly during operation.

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

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

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

To completely clean the FMM filter, it is necessary to remove the cover, remove the grid and the magnetic system. When refitting the cover, it is recommended to use a new gasket. It is recommended to clean the filter every year maintenance boiler.

On sale there are other, outwardly similar filters, without a magnetic system and (or) with a large mesh size. Make no mistake with the choice.

Some models of boilers have a built-in mesh filter at the heating water inlet to the boiler. On the return pipeline 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 capacity less than the calculated one for the house. Most of the heating season, one boiler (gas) operates in a mode with a higher efficiency. The electric boiler reserves the operation of the gas boiler and supplements the power of the gas boiler in cold weather.

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

In addition, the boilers reserve 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. In order to reserve the gas supply, a boiler of lower power is sometimes chosen on a different type of fuel. Such a boiler is turned on for a short time, only in frost or during the repair of another boiler. Therefore, the reserve boiler can operate on a more expensive type of fuel.

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

Soft heat radiators reduce gas consumption

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

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

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

The figure above shows the standard operating temperature of a radiator in systems with plastic pipes. Below are the maximum heatsink temperatures for comfortable mild heat.

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

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

The mild temperature regime also makes it easier to arrange a combined heating system with radiators and underfloor heating. Thermal comfort in the house 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 heating water temperature.

True, to switch from the 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 gas, but the volumetric flow of gas in m 3 passed through the counter. And from the school course of physics it is known that the amount of gas, kg, in 1 m 3, depends very strongly on the pressure and temperature of the gas at the time of passage through the counter.

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

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

Industrial gas meters are equipped with pressure and temperature sensors that allow you to take this dependence into account 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. Gas meter without correction 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 should limit pressure fluctuations in the gas network in a fairly narrow range, within 15 mbar. So, the influence of these pressure changes on the accuracy of gas flow determination can be neglected. And to bring the meter flow readings to standard pressure conditions, a constant correction factor is used.

It is also considered unprofitable to apply pressure adjustment for household appliances because such meters are expensive, less reliable and difficult to operate.

But is this true in real life?

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

According to the norms, the supply line should have a maximum dynamic pressure gas 25 mbar(255 mm w.c.). If you are lucky, and this is true, then the gas meter will display gas consumption that almost matches 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 a minimum of 15 mbar., then, ceteris paribus, the meter will show a flow rate higher than the actual gas flow rate by about 12%. Those. at actual consumption 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 it is for the gas business. Such a profit is not advertised by them. The population is not offered any options for adjusting pressure. And the population does not require it.

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

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

It should be separately explained that the temperature coefficient applies only to the readings of metering devices installed outside heated premises (on the street). Since gas enters them, 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 do not apply.

For those who have gas meter stands outside, temperature coefficient in middle lane for the summer months 0.96 - 0.98, and in winter about 1.15, and on average for the year about 1.1. 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 a month is calculated as the product of the volume of gas on the meter for a 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 temperature corrector, which will automatically determine the gas flow rate in accordance with its actual temperature. This is especially true for those who consume increased volumes of gas, for example, for home heating and water heating. A meter with a thermal corrector 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 that is released during the combustion of gas also depends on the quality of the gas. The natural gas that enters the boiler from the gas pipe is not uniform in composition. In addition to methane, it may contain other combustible gases, as well as water vapor, atmospheric air gases and other impurities. Depending on the ratio of these components, the calorific value of gas and its consumption change.

Gas wall-mounted boiler Baxi Eco Four 24 fourth generation. The model differs in ease of installation, simple service and universality of operation. The use of modern technological innovations makes the use comfortable and safe: a wide liquid crystal display constantly displays in real time Current state boiler, maintains automatically set parameters, makes 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 double-circuit turbo boiler.
A modified copy of the ESO-3 Сompact series of compact units, well known to users.

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 hydraulic group increases the cost of the unit, but extends the service life by 100% compared to conventional metal water supplies.
Management t control push-button. The buttons are located on the front panel.
LCD screen for information about the working status of the column. Highlighting and tabulation are clear and easy to read. Serves to provide information in real time and to set the mode.
A boiler with a turbo system is easy to operate and easy to maintain.

Technical parameters of Baxi Eco Four 24

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

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

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

High performance performance on both natural gas and LPG.
Constant, uninterrupted electronic support of the flame in the GBC and heating modes.
Ignition is smooth, electronic.
The boiler has been adapted to work in local regions. Gives stable performance when the pressure drops to 5 Mbar.
Burner head made of stainless steel.
The system of supply and regulation of the air flow is patented.

Description and characteristics of the hydraulic system Baxi Eco Four 24

Control of hot water consumption by a separate water meter.
The copper heat exchanger for the primary stage is additionally protected against corrosion.
Circulation pump, energy-saving, with built-in automation on the air vent.
The plate heat exchanger for the secondary stage is made of stainless metal alloys.
Brass valve, three-way, with electric actuator.
Manometer with a convenient scale and graduation.
Baylas 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 the temperature control of the boiler Baxi Eco Four 24

Digital temperature indication.
Function of connection of the programmable timer and the 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.
Adjustment and auto-support of the temperature regime in the HBC heating circuit.
Dual range temperature control heating system from 35 C to 85 C. It is possible to use a column for a warm floor system from 30 C to 45 C.

Maintain control and safety when using the Baxi Eco Four 24

Liquid crystal display with push-button control.
Electronic self-diagnostics of the system.
At the request of the user, the blocking signal of the installation is displayed on the control panel.
Combustion control and flame composition with an ionization system.
Primary heat exchanger with a protective thermostat against overheating and boiling water in the system.
A special sensor for monitoring the type of pneumatic relay for the removal of combustion products.
Insufficient water pressure leads to the operation of 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 products are exported to more than 70 countries around the world. In Russia, the 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 BAXI equipment is quite in demand and popular on the Russian market. So, after a brief 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 the preparation of hot water. Depending on the configuration, the devices can be equipped with one or two heat exchangers. The features of BAXI gas boilers include:

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

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

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

When choosing equipment, you should pay attention that double-circuit models of boilers can also be made with one heat exchanger (main - bithermic), in which the heating and hot water circuits are combined (pipe in pipe).
These models are cheaper, but they can be more expensive to operate, because. more demanding on water quality. The scale that forms inside over time will make it impossible to operate the boiler as a whole and lead to unplanned expenses 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 global 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, are equipped with an automatic air vent, which is not a feature.
Concerning gas automation, the equipment can be equipped 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 heating and hot water modes) brass is undoubtedly more reliable than plastic counterparts, although the tendency of manufacturers is this moment goes towards composite materials.
The fan of turbocharged models is structurally located at an angle with respect to the chimney, which prevents spontaneous spinning of the blades under the action of natural draft and eliminates possible additional loads to overcome it during the start-up of the boiler.
Separately, it is worth mentioning 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 conditions of exploitation of Russian reality. But, with all this, the boards have better maintainability, availability in terms of availability and price.
It is possible that the boards of some eminent German manufacturers are more reliable, but this reliability very often leads to the impossibility of restoring the board, for example, due to processor damage, and the retail price of such a “reliable” board is much higher. It is worth noting that in most cases, electronics are reliable and do not break on their own.
It should also be noted that the boards are universal and equipped with a liquid crystal display. For some manufacturers, they are separated and have incompatibility, which affects availability and maintainability.
In general, we believe that BAXI boilers have good value price quality. Some models, due to their popularity, are not even taken out of production, which indicates the achievement of certain successes and consumer confidence.
In the last annotation of the baxi company about the change in retail prices (from September 1, 2017), it was 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. Brass hydraulic group and stainless steel secondary plate heat exchanger, continuous smooth flame modulation, quiet operation.
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 economy.
The turbine sensor of the DHW flow allows you to accurately control the temperature of the water - just set a comfortable value once (for example, I have it 39 degrees) and never return to the settings. The ECO 4S model has replaced BAXI FOURTECH, it is distinguished by a hydrogroup of composite material.

MAIN 5 and ECO 5 Compact

Easy access to all nodes, the location of the expansion tank has been changed - now it is located inside the case, which means easy control and maintenance. The design of the boiler body is made taking into account maximum noise reduction to increase comfort during the operation of the boiler. The internal nodes 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 bithermic heat exchanger, a structurally 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 control the water temperature. Also in these models, emphasis is placed on increasing the protection of the control board!

LUNA 3 Comfort

Boilers of this series are equipped with a remote 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, the 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 the hydraulic group made entirely of brass and the Grundfos three-speed energy-saving pump.
In a word, LUNA is a maximum of reliability and comfort. At the time of writing, the retail price is from 969 EUR for the 24 kW model.

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

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

Advantages and features of Baxi gas boilers

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

The line of Baksi heating appliances is very extensive: there are Baksi wall-mounted boilers with different functions and floor-type boilers, they can also be either single-circuit or 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, one can distinguish such advantages of all models of Baxi gas boilers:

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

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

Common models of Baxi gas boilers

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 the aggressive environment of the heat carrier, and can last for quite a long time. And the 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 domestic needs, and it will not be necessary to repair it periodically.

Moreover, Baxi model 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 Baxi device with your own hands, if you act strictly according to the attached instructions.

Baxi main gas boilers: design and application features

The Baxi main 5 model belongs to the new generation of boilers. It is double-circuit, with its help it is possible to heat the room and at the same time heat the water. This heating device is wall-mounted, compact, but at the same time it has a good 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 quite a long time.

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

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

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

As you can see, this model has excellent performance, easily adapts 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 you have a certificate that confirms the originality of the product.

Description of the Baxi slim gas boiler model

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

The gas boiler of the presented model has a cast iron heat exchanger, and this indicates that the unit has a long service life. According to the instructions, the manufacturer declares the uninterrupted operation of the boiler 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 Baxi slim gas floor-standing boilers is distinguished by 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 possibility of constantly monitoring that the temperature in the heating system and the hot water circuit does not change;
according to the instructions, the kit includes a stainless steel burner that can be controlled automatically;
double-circuit boiler of the indicated 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

A series of double-circuit wall-mounted gas boilers Baxi Nuvola 3 Comfort different general characteristics for all 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 wall-mounted Nuvola 3 Comfort 240 Fi with a protective system. Her key specifications are:

The average price for this model in the territory of the Russian Federation is from 46 thousand to 57 thousand rubles depending on the seller and 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;
productive hot water 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 type combustion chamber;
the presence of a removable digital panel, which also performs the function of 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

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

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

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