The actual total gas consumption over a certain period of time practically does not depend on the power of the boiler, but depends on the heat loss of the heated room, the operating mode of the equipment and the amount of water used in the hot water supply (DHW) circuit.
The data sheets of gas boilers, as a rule, indicate gas consumption at minimum and maximum power. Gas consumption is usually given for standardized gas types (G20 - natural gas methane, G30 - liquefied gas butane, G31 - liquefied gas propane).
For an “average” imported boiler with an efficiency of 90%, the total gas consumption at a load (net power) of 10 kW is approximately equal to:
– 1.2 m3/h for natural gas (G20);
– 0.86 kg/h for liquefied gas (G30 or G31).
When calculating natural gas consumption, it is also worth considering that in Russia the lower calorific value may differ from the standardized G20 gas to a lesser extent (up to 10–15%).

Reference data:
Lower heating value of gases:
– for natural gas G20 (methane) is equal to 34.02 MJ/m3;
– for liquefied gas G30 (butane) is 45.6 MJ/kg;
– for liquefied gas G31 (propane) is 46.3 MJ/kg.
Values ​​are given at a temperature of 15 °C and an atmospheric pressure of 1013 mbar (760 mm Hg or 1 atm).

The exact gas consumption for non-condensing boilers can be determined by the formula: Gas consumption (m³/h or kg/h) = 3.6 Power consumption (kW), where

About the joint operation of BAXI boilers

ADVANTAGES OF USING SEVERAL BOILERS FOR ONE HEATING SYSTEM

An increasingly popular solution among installation and design organizations is the use of several boilers for one heating system. This solution is justified with a heat load starting from 40 kW. This can be either a large heated area or the presence of thermal loads in the form of swimming pools, garages, bathhouses, greenhouses, etc.
Using several boilers for one heating system has a number of advantages compared to one boiler with the same total power. Let's list some of these advantages.
Firstly, several small boilers of smaller size and lighter weight are much easier and cheaper to deliver to the boiler room and install there instead of one large and heavy boiler. (This point becomes especially relevant when installing roof or semi-basement boiler rooms.)
Secondly, the reliability of the system is significantly increased. If one of the boilers is forced to stop, the system will continue to operate, providing at least 50% of the power (if two boilers are installed).
Thirdly, maintenance is easier due to the smaller size of each boiler. can be carried out without stopping the entire system and.
Fourthly, the total service life of boilers increases. In autumn and spring, only part of the boilers can be operated by turning off part of the boilers manually or using cascade automation.
Fifthly, if in the future it becomes necessary to replace any part of the boiler, then it is known that parts for boilers of lower power are more accessible and cheaper due to greater serial production. Of course, the conditions are that service and technical work be carried out by trained and competent personnel. Professional specialists will be able to perform a fairly wide range of work directly at the clients’ homes. For several years we have been repairing gas boilers and maintaining them, while the services we provide are constantly being supplemented and improved. This became possible thanks to the high qualifications of each of our masters.

This boiler is an excellent ready-made solution for houses with an area of ​​up to 240 sq. m.) Equipped with a pump, expansion tank, and boiler safety group. A bithermic heat exchanger significantly saves your money and makes it possible to use the water heating function along with heating.

Specifications MAIN Four 24F

Heating and hot water
Max. useful thermal power kW 24
Min. useful thermal power kW 9.3
Max. consumed thermal power kW 26.3
Min. consumed thermal power kW 10.6
Max. natural/liquefied gas consumption m3/h (kg/h) 2.78 (2.04)
Max. productivity (efficiency)% 90.6
Productivity (efficiency) at 30% power % 88
Capacity/filling pressure of the expansion tank l/bar 6/0.8
Combustion chamber closed

Temperature control range in the DHW circuit oC 35 - 55
Hot water productivity at Δt=25°C l/min 13.7
Hot water productivity at Δt=35°C l/min 9.8
Min. water consumption in the DHW circuit l/min 2
Max./min. pressure in the DHW circuit bar 8/0.15
Diameter of the chimney. pipes (coax.) mm 60/100
Max. chimney length. pipes (coaxial/separate) m 5/30
Nominal inlet pressure of natural gas mbar 13-20
Electrical power/voltage W/V 80/230
Overall dimensions - h/w/d 730/400/299
NET WEIGHT kg 27/30

Baxi ECO Four 24 F is a wall-mounted gas boiler of the fourth modification, which has gained wide popularity among consumers for its compact size. Despite its modest dimensions, the Baxi ECO Four 24 F will be able to heat a living space up to 240 m2 and ensure the operation of the hot water supply system.

A closed combustion chamber and two heat exchangers separated from each other are responsible for performing these tasks. Small dimensions and wall mounting allow the boiler to find its place even in a limited area of ​​living space.In addition, the free space under the unit can be rationally used to satisfy domestic purposes.

The design of Baxi ECO Four 24 F is intended as a heating device for a private house or apartment. In addition, when connecting the DHW circuit, the boiler supplies residents with hot water with a temperature control range of 35-60°C. and flow rate through the apparatus at a rate of 13.7 l/min.

A wide range of functions is responsible for visualization of controlLCD display with convenient buttons on the front panel.It displays everythingsubject to control,characteristics of the device.

In addition, with the support of the provided interactive, it is possible to process information about failures and errors that occurred during operation. By comparing the digital and alphabetic symbols on the display with the table of errors in the operating instructions, even an inexperienced user can troubleshoot the problem without resorting to the help of a specialist. According to numerous reviews, cope with the operation of the fourth generation wall-mounted boilerBaxi ECO Four 24 F has become much simpler.

Baxi ECO Four 24 F Technical specifications

• Correction of values ​​and automatic support of the set temperature regime in the Baxi ECO Four 24 F heating circuit is possible, starting from the lowest performance indicator of 9.3 kW and ending with the maximum possible useful thermal power - 24 kW.

• BAXI engineers managed to achieve a maximum performance value of 92.9% (efficiency) in this boiler.

• The Baxi ECO Four 24 F gas boiler has been fully adapted to domestic requirements. Stable operation of the equipment is possible with a natural gas inlet pressure of 5 mbar. The designers provide the possibility of reconfiguring the operation of the device from the supply of liquefied gas. Economical operation without using DHW, does not exceednatural gas consumption is 2.78 m3/h; after switching to liquefied gas, the consumption value is within 2.04 kg/h.

• The built-in expansion tank allows a filling pressure of 0.8 bar, the filling volume is 6 liters. Coaxial installation of a 60-100 chimney will help maintain the compactness of the structure. The input voltage for the controls is 220 V.

By equipping the Baxi ECO Four 24 F boiler with a built-in pump from Grundfos, model UP15-50 and other energy-consuming elements, the power consumption reaches 80 W. All Components do not disturb the owner’s peace and create a background noise level of no more than 29 dB.

Baxi ECO Four 24 F - heating and hot water supply

• The Baxi ECO Four 24 F model is equipped with a primary heat exchanger made of copper alloy to transfer thermal energy to the coolant. The durability of the element, in addition to the copper version, is determined by the specific content of the mixture, which protects against corrosion, which is applied under production conditions.

• The second heat exchanger is a plate type made of stainless steel, used to heat the DHW liquid in a dual-circuit design of the device. The heat exchangers are independent of each other. The maximum pressure at which the system exhibits stable operation is 3 bar.

• Movement along the circuit and radiators is ensured by a forced method using a circulation pump built into the boiler from the famous Danish brand Grundfos. It is allowed to use glycol-containing liquids (antifreeze) in proportions not exceeding the values ​​​​specified in the operating instructions. The total volume of pumped coolant can be no more than 672 m3. The continuous electronic modulation function makes it possible to maintain a minimum and maximum temperature value within the range of 35 to 85°.

• The double-circuit design of the Baxi ECO Four 24 F is designed specifically for heating cold water to a hot state of 60°C. the minimum possible value setting is 35°C. In the range from 25°C to 35°C, as stated above, productivity remains at the level of 13.7 liters per minute, with increasing temperature, the rate of hot water preparation decreases.

Let's make a reservation that during the summer period of inactivity and downtime of the device as a heating device, the Baxi ECO Four 24 F boiler in most cases is used as a regular one.

Weight, overall dimensions and connection features

The boiler from the Italian brand Baxi ECO Four 24 F has a laconic design, white color and ultra-compact shape 730 x 400 x 299 mm. In general, the ECO Four model line is supplied to the market in single-circuit and double-circuit performance , and models are equipped with an open and closed combustion chamber.

Note that the Baxi Ecofor 24 boiler is the “star” of the model range. Despite being equipped with two circuits, two heat exchangers and a closed chamber, the engineers managed to keep the structure lightweight at 29 kg.

Hydraulic connections are located at the bottom of the boiler: return and supply of the heating system with dimensions 3/4 inch, pipes are used for cold water inlet and hot water outlet0.5 inch. Gas connection -3/4 inch. In addition to traditional connections, at the bottom of the boiler there is a safety relief valve, a drain valve, a make-up valve, and a simple pressure gauge.

Baxi ECO Four 24 F - gas and hydraulic parts

Above we touched on some characteristics of the Baxi ECO Four 24 F, now we propose to summarize them and bring them into a single form:

– Behind strange and incomprehensible words: Continuous electronic modulation, hides an innovative combustion approach. This means that the intensity of the flame, or rather the gas supply to the burner, changes depending on the signals from the sensor installed on the heating and hot water circuit.

For example, the flame decreases when the room temperature rises and increases when it becomes cool. In water supply, this is expressed in a stable flow temperature, regardless of the size of the tap;

– Forget about matches, smooth electronic ignition will start the device with one click of a button;

– Adaptation to domestic realities. conditions. Baxi ECO Four 24 F continues to burn steadily without attenuation with a pressure from the main line of 5 mbar;

– Flame spreaders have a long service life, as they are mounted from stainless steel;

– Balanced air supply complex– has its own European patent. (in versions with a closed firebox);

– Gas valve SIT Sigma 845;

– Equipment reconfiguration is allowed for operation with liquefied gas.

The hydraulic part of the device looks quite traditional for dual-circuit models. The primary heat exchanger is made of stainless steel and transfers heat energyhot water circuit. Interesting fact, exactly the same heat exchanger is used in the boiler8230. The second, copper heat exchanger serves as a transmitter of thermal energy to the heating circuit.

An air vent is mounted and equipped in the lower part. If the owners feel the need for a larger volume of heated water, then the Baxi ECO Four 24 F boiler provides the opportunity to connect to a separate water supply circuit

Features of temperature control Baxi Ecofor 24

The wall-mounted boiler Baxi ECO Four 24 F was developed at an Italian enterprise with the ability to adjust the heating intensity both in a traditional heating system with radiators, within the range of 30 - 85 ° C, and underfloor heating systems, where the parameters are slightly lower and vary from 30 - 45 ° C.

Additional equipment with weather-compensated automation accessories significantly expands the versatility of the Baxi ECO Four serial products. By connecting the outdoor temperature sensorto the heating system, the intensity of the operating parameters of the device automatically changes depending on street conditions.

Also, to achieve more precise control over the heating of the room, you can use room mechanical or programmable thermostatic devices.

Technical data Baxi ECO Four 24 F

Controls and safety devices

It is best to buy Baxi ECO Four 24 F in a specialized store, where there is further warranty service and post-warranty support. When communicating with experts about the Baxi ECO Four 24 F product, we heard diametrically opposite reviews.

In fairness, it should be noted that the Baxi ECO Four 24 F boiler receives favorable reviews much more often. Thanks to the latest self-diagnosis system and error display, it has become easier to carry out timely adjustment of equipment.

The usual equipment of the device with sensors responsible for stopping the boiler in case of overheating, lack of draft and ionization control of the flame makes the household appliance completely safe. Sensors instantly signal possible problems, supply information to the electronic board, which in turn processes the data and makes a decision on further operation. The homeowner is provided with a protective function against blocking the pump.

The equipment of Baxi ECO Four 24 F includes temperature sensors NTC (Negative Temperature Coefficient), submersible for DHW and overhead for the heating system. In the upper part there is a fan on a closed chamber, a pressure switch, and a condensate collector.

Functional diagram of Baxi ECO Four 24 F

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 the current state of the boiler in real time, maintains automatically set parameters, and performs 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 high-power 2400 W double-circuit turbo boiler.
• A modified copy of the ECO-3 Compact 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.
• Push-button control and control. The buttons are located on the front panel.
• LCD screen for information about the operating 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 useful thermal power is 2400W.
• The minimum value of useful thermal power is 9300 W.
• Maximum power consumption 2580 W.
• Minimum power consumption 1060 W.
• Type of energy carrier used: natural or liquefied gas.

• Maximum natural gas consumption 2730 l/h.
• Maximum liquefied gas consumption 2000 l/h.
• Maximum efficiency 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 heating temperature range in the circuit is from 35 to 60 C.
• Productivity for hot water at a temperature of 25 C is 13.7 l/min.
• Productivity for hot water at a temperature of 35 C is 9.4 l/min.
• Minimum water supply to the DHW circuit is 2 l/min.
• Pressure in the DHW circuit max|min 8|0/15 bar.
• Smoke exhaust pipes: diameter of coaxial 6-10 cm, separate 8 cm.
• Maximum total length of outlet pipes: coaxial 500 cm, separate 3000 cm.
• Recommended natural gas pressure is 13-20 Mbar.
• Power supply 130 W, 230 V.
• Electrical protection class IPX5D.
• Overall dimensions 40 x 73 x 29.9 cm.
• Weight 36 kg.

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

• Highly efficient performance on both natural and liquefied gas.
• Constant, uninterrupted electronic flame support in hot water supply and heating modes.
• Ignition is smooth, electronic.
• The boiler has been adapted to work in local regions. Gives stable performance when pressure drops to 5 Mbar.
• Burner divider made of stainless steel.
• The air flow supply and regulation system is patented.

Description and characteristics of the Baxi Eco Four 24 hydraulic system

• Control of hot water consumption with a separate water meter.
• The copper heat exchanger for the primary stage is additionally protected against corrosion.
• The circulation pump is energy-saving, with built-in automation on the air vent.
• The plate heat exchanger for the secondary stage is made of stainless metal alloys.
• Valve made of brass, three-way, with electric servo drive.
• Pressure gauge with a convenient scale and graduation.
• Baylas automatic.
• Post-circulation pump.
• Filter for cold water inlet. Cleans from large particles up to 5 microns.
• The automatic system tests the dispenser 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

• Digital temperature display.
• There is a function for connecting a programmable timer and thermostat for internal use.
• Automation taking into account weather conditions outside. It is possible to connect a sensor to display information about the temperature outside.
• Adjustment and automatic maintenance of temperature conditions in the DHW heating circuit.
• Two-range temperature control in the heating system from 35 C to 85 C. It is possible to use a column for a heated floor system from 30 C to 45 C.

Maintaining control and ensuring safety when using Baxi Eco Four 24

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

Before the purchase! When choosing a UPS, you first need to know the total electrical power of the system. From the table below you can take the power value for your model boiler Baxi. However, do not forget to add the power of external (additional) circulation pumps (if they are installed, for example, on heated floors).

Correspondence table between Baxi boiler models and their power consumption.

boiler model Baxi NUVOLA

• NUVOLA-3 Comfort 240 i, 280 i, B40 240 i, B40 280 i - 110 W
• NUVOLA-3 Comfort 240 Fi, 280 Fi, 320 Fi, B40 240 Fi, B40 280 Fi - 190 W

boiler model Baxi Four Luna

• ECO Four 24, MAIN Four 240, ECO Four 1.24, LUNA-3240 i, ECO Four 1.14, LUNA-31.240 Fi - 80 W
• ECO Four 24 F, MAIN Four 240 F, ECO Four 1.24 F, LUNA-3240 Fi, LUNA-31.310 Fi, - 120-130 W

Recommended On-Line UPS kits with batteries for Baxi boilers

UPS kits up to 800W with external batteries

24v UPS with two external batteries: - optimal price-reliability-efficiency ratio

Our company’s engineers have created for you a unique program for selecting a UPS model for a boiler and calculating the required battery capacity. By specifying the power and desired autonomy time, all options are displayed. Use the automated selection system

Please pay attention: What parameters must the electrical network have in order to connect a boiler to it?

Everything is standard here: 220 V, 50 Hz, grounding. In principle, the same requirements as when connecting, for example, a washing machine. Grounding must be carried out according to all standards. If there is any potential hanging on it, which often happens, we must fight it. In the absence of normal grounding, it is recommended to install a special stabilizer that provides separate galvanic isolation. It often happens that potential comes through a gas pipe. Then the boiler must be connected via a dielectric adapter.
BAXI boilers operate stably in the range from 170 to 250 V.* At 170 W, modern models of BAXI boilers turn off. And when the voltage increases above 250-270 V, the protective element (“varistor”) burns out on the board.**
The very characteristic of electricity in the network is sine wave- must be free of interference, therefore the use of uninterruptible power supplies designed for computer equipment and producing a rectified current characteristic is not recommended. Many service organizations, when commissioning boilers, prefer to additionally install a voltage stabilizer. It is recommended to connect boilers to the electrical network through a separate circuit breaker. If the boiler is phase-dependent, it is necessary to ensure that the phase and zero match. This information is from the official website

Note* At a voltage of 180-170 volts, circulation pumps heat up more and their service life is significantly reduced.

** "Varistor" is a protective element that, when burned, prevents damage to the boiler electronics. The varistor is replaced only at Baxi service centers. The ready-made kits offered below are suitable for Baxi wall-mounted boilers of the Four, Luna, NUVOLA series with a consumption power of 80-135 W.
This is just one of many options to ensure uninterrupted power supply to the boiler. We individually calculate the optimal options based on your data on power and desired autonomy time. There are no “ready-made” kits as such; they are assembled from two main components:


1. UPS - it is responsible for the quality of processing of incoming voltage (in this case it is On-Line), for monitoring the presence of voltage and the timeliness of switching to battery power, for charging the batteries.
2. Battery pack - it is responsible for the battery life; the larger the capacity of the batteries in the pack, the longer the reserve time. Their service life depends on the quality of the batteries themselves.

How many batteries should I buy and what capacity? The number of batteries depends on the selected UPS model and is related to the inverter voltage of a specific UPS model. For example, the Inelt Monolith K1000 LT UPS, which has proven itself well during the period of “ice rains,” requires THREE 12-volt batteries for its power supply. You can calculate the capacity using the formula below.



Where: T- desired system autonomy time in hours.
R- load power (taken from the passport for the boiler or pump) in watts.
N- the number of batteries on which the selected UPS model operates.
The battery life depends only on the capacity of the batteries and their quality and does not depend on the manufacturer, brand and model of the UPS!

There is a discrepancy in the data on the autonomy time of each manufacturer with the data obtained during the calculation using the above formula. This is explained by the fact that the formula takes into account two reduction factors. This is the converter efficiency and coefficient. discharge depth. Therefore, the estimated time according to this formula will be slightly less than in the technical descriptions of the UPS themselves and is more reliable.

Let us give the procedure for accurately calculating the autonomy time, for example for a gas boiler BAXI NUVOLA-3 Comfort 240i. initial data nameplate electrical power consumption 110 watt, and it is necessary to ensure uninterrupted power supply from the UPS for a period 12 hours.

According to the formula for calculating the battery capacity of 110W, we multiply by 12 hours, divide by 8.65 = 152.6 a/hour. This is the total capacity of the battery. T.K. UPSs operate from two or three batteries 150 divided by 2=75 or 3=50. Bottom line, choose a UPS that runs on two batteries and to it two batteries of 75 A/h or a UPS operating from three batteries and to it three batteries, 50 a/h each. 50a/hour no, it means close to 55a/hour. Battery options are in the table below. These are not all battery options that we have in stock or are available to order. If you go to the battery section, set the desired capacity range, you will be able to select other options in terms of price and quality.