Gas technology has gained popularity thanks to high efficiency, which is produced during the combustion of fuel. In addition, the exhaust gases contain a minimal amount harmful substances. At the time of buying heating equipment We want to get an efficient and economical device. Therefore, it is important to calculate in advance the actual gas consumption in the boiler.
Years of use different types fuels have proven that gas is 30% cheaper than diesel and electricity. Most users connect to a common pipeline, since when using gas in cylinders, funds are spent on delivery.
Factors that should be taken into account when choosing a heating boiler to avoid high fuel consumption:
The presence of one or two circuits also matters. A single-circuit device works only for heating. Whereas double-circuit - for hot water supply (DHW) and heating. Consequently, its consumption will be greater.
Units with a closed combustion chamber consume less fuel than those with an open combustion chamber. The length of the heating season also affects. After all, in winter the boiler works at maximum, while in summer it works at minimum, only for heating hot water.
Why do appliances consume a lot of gas? This is all due to poor insulation of the building and scale deposits.
The table shows an example of maximum consumption for 210 days.
| Equipment power (kW) | How much gas does it consume (hour/m³) | Consumption for the whole season (m³) |
| 10 | 1,12 | 5 644 |
| 12 | 1,6 | 8 064 |
| 15 | 1,68 | 8 467 |
| 20 | 2,6 | 13 104 |
| 24 | 3,1 | 15 624 |
| 30 | 3,9 | 19 656 |
| 40 | 5,2 | 26 208 |
| 50 | 6,5 | 32 760 |
| 60 | 7,9 | 39 816 |
| 100 | 13,1 | 66 024 |
| 200 | 26,2 | 132 048 |
Knowing how many cubes are consumed per hour, you can calculate the rate per day and per month.
To heat a private house or apartment, calculations are used that are based on two parameters: the power of the heating equipment and the area of the room. An average calculation is taken - 1 kW per 10 m².
Many articles have been written on this topic, but few clarify that the kilowatt unit of measurement is thermal power, not electrical power. This misleads many users.
It would be more logical to measure work on natural gas in cubic meters (m³ per hour), and on liquefied gas in kilograms (kg/hour).
On average, 1 kilowatt of thermal power consumes 0.112 cubic meters per hour of main gas.
For example, let’s take the “” unit with a power of 17.4 kW. The passport data indicates the consumption of main fuel is 1.87 cubic meters, liquefied gas - 1.3 kg/hour. These values are valid for continuous operation, but if the device is constantly running under wear and tear, then the parts will quickly fail. When choosing, add plus 20% to the indicated power.
“AOGV” in our example will be installed in a room of 140 m². Now take a look at the rates (approximately):
The daily calculation for the main connection will be as follows: :
Day (24 hours) x 1.87 (cubic meters/hour)/2 = 22.4 cubic meters. To find out the cost: 22.4 x 3.9 (tariff) = 87.5 rubles.
Per month:
22.4 (daily consumption) x 30 (number of days) = 672 m³.
Per year (seven months - heating season):
7 x 672 (monthly norm) = 4,704 m³.
When working on propane per day :
24 (hours) x 1.3 (kg/h) /2 = 15.6 kg. To find out the minimum costs: 15.6 x 28.6 (tariff) = 446 rubles.
For a month (30 days):
15.6 (per day) x 30 = 468 kg. That means you use 22.3 propane tanks per month.
For a year (seven months):
7 x 468 (per month) = 3,276 kg or 156 cylinders.
Please remember that these calculations are for one model only. The meanings vary for each brand; you need to look them up in the documentation. See tables below:
And also for bottled gas:
Consumption is affected by the location of the device: floor or wall. Heat exchanger material, type gas burner, number of working days.
If you follow our recommendations in the domestic sphere, then you can save on using the boiler:
This is how the cost of heating a living space is calculated. If you are not sure of the accuracy of the calculations, contact a specialist. He will take into account all the nuances and help you with the selection of economical equipment.
Gas wall-mounted boiler Baxi Eco Four 24 of the fourth generation. The model is characterized by ease of installation, simple maintenance and versatility of operation. The use of modern technological innovations makes use comfortable and safe: a wide liquid crystal display constantly displays in real time Current state boiler, maintains automatically set parameters, performs an emergency shutdown in the event of a drop in water pressure or gas pressure.
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 sizes and wall mounting, allow the boiler to find its place even in a limited area of living space.Besides everything, free place under the unit can be rationally directed to satisfy domestic goals.
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 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.
by equipping the Baxi ECO Four 24 F boiler with a built-in pump from Grundfos company, model UP15-50 and other energy-consuming elements, 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.
Let's agree that in summer period 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.
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.
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 the 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
The boiler was being developed wall-mounted Baxi ECO Four 24 F 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.
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 product Baxi ECO Four 24 F, 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 system self-diagnosis, and displaying errors on the 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 household appliance completely non-hazardous. Sensors instantly signal possible problems, submit 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.
Owners of private houses or other premises always feel the need to reduce heating costs.
Autonomous heating systems, which require a certain initial investment, can pay off quite a bit. short term and bring significant savings.
Wherein, an important condition system efficiency becomes right choice heating boiler, on which the operating mode and performance of the system, the amount of fuel consumed and total costs for heating.
One of good options The choice is the Baxi Eco 4S 24 F gas boiler, which is capable of providing complete heat and hot water supply to a room of the appropriate size.
Let's look at it in more detail.
The Baxi company was founded in 1929, and has been developing and manufacturing heating products for more than half a century. During this time, valuable techniques were developed, high-quality and reliable models of heating installations were created.
In 2009, Baxi merged with De Dietrich Remeha to form the industrial group BDR Thermea. Since that time, the company's capabilities have increased significantly, which has significantly affected the quality of its products.
Boilers Baxi Eco 4S 24 F are gas installations, providing coolant supply to heating systems (or heated floors) with parallel supply of hot water for domestic needs. The units are different high quality work, resistance to external influences and loads.
Most of the company's products are manufactured taking into account the specifics of Russian technological lines and climatic conditions, therefore boiler models are adapted to work with low pressures gas, with interruptions in the supply voltage in the network and other unstable indicators.
A useful function that is present in the list of boiler capabilities is frost protection, which ensures increased circulation of the coolant (or heating water - HW) throughout the system.
The units have compact dimensions; the wall mounting type allows them to be installed in any convenient location. Options and specifications installations make it possible to widely use both in private homes and in office or public spaces.
The Baxi Eco 4S 24 F boiler has a copper primary heat exchanger, which demonstrates greater efficiency compared to stainless steel units.
The secondary plate heat exchanger, which produces domestic hot water heating, is a typical stainless steel plate device.
A convenient feature of the boiler is considered coaxial chimney. It does not require a complex and time-consuming procedure for connecting to the central chimney; it is discharged through the adjacent outer wall in a horizontal position.
Pipe-in-pipe design allows for simultaneous flow fresh air into the burner along the outer part and remove combustion products through the inner part. This promotes cooling outer surface chimney, eliminating the risk of fire.
The set of boiler functions includes:
NOTE!
Only the most basic functions are listed. The full list is too long and differs little from the capabilities of other Baxi boilers.
Consider the table technical parameters boiler Baxi Eco 4S 24 F:
The advantages of the Baxi Eco 4S 24 F model include::
The disadvantages of boilers of this series are considered:
Both the advantages and disadvantages of the Baxi Eco 4S 24 F boilers are characteristic of most gas units of this level and can be attributed to design or assembly features.
The main components that make up the boiler design are:
The boiler operates according to the usual method characteristic of all similar designs. Using a circulation pump, the coolant is supplied to the heat exchanger, where it is heated to the highest possible temperature.
At the outlet, it is fed into a three-way valve, which dilutes the hot heating agent with a colder return flow in a given proportion, determined by the set heating mode. After this, the prepared coolant is sent to the heating circuit.
Hot water is heated in a secondary (plate) heat exchanger and supplied to the distribution points. A closed combustion chamber improves the quality of indoor air.
To organize combustion in the required mode, air is supplied using a fan, which takes the required flow from the external compartment of the coaxial chimney.
Wall-mounted gas boilers are optimally suited for use in private homes or other premises of the appropriate size.
The specificity and set of functions make it possible to provide thermal energy and hot water supply to areas of up to 240 sq. m., which corresponds in size to a medium-sized two-story private house, store or other office space, public building.
Such boilers are not recommended for use in industry, although it all depends on the specialization of the workshop and the operating conditions of the heating circuit.
After delivery and unpacking of the boiler, it is installed on the wall in a pre-designated location. It is necessary to choose a convenient site with the possibility of supplying communications, ease of access for maintenance and repair.
Then all relevant pipelines must be connected:
For the initial launch, perform the following steps::
The burner will start and heating of the heating agent will begin.
The burner may not start when first turned on due to the presence of air in the system. The boiler will be blocked and the corresponding error code will appear on the display. By pressing and holding the “R” button for 2-3 seconds, the error is reset and the procedure is repeated until the expected result is obtained. It may take several tries.
The sensor system constantly monitors the condition of all boiler components, signaling to the control board if any failures occur. A specific code appears on the display indicating a particular malfunction.
The full list of codes is much wider, but there is no point in citing it in its entirety. When one or another code appears, press the “R” button and hold it for 2-3 seconds until the error is reset. If it appears again, you should urgently call a specialist.
Let's consider the opinions of the owners of boilers of this series. Such information will help you look at the quality and capabilities of the units more realistically and pragmatically, without advertising or excessive enthusiasm.
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This article outlines what Baxi brand, information on the manufacturer, as well as the main technical characteristics of each series Baxi gas boilers.
BDR Thermea occupies a leading position in the world as a manufacturer of high-tech heating and hot water supply systems. The total turnover of this market is estimated at 16 billion Euros.
BDR Thermea employs 6,400 people. At annual turnover 1.8 billion euros the company holds leading positions in the markets of European countries such as France, Great Britain, Germany, Spain, Italy and the Netherlands. In the markets of countries of Eastern Europe BDR Thermea has gained quite a strong position in recent years. The same goes for Turkey, China and the USA. The company's products can be purchased in more than 70 countries.
BDR Thermea has chosen the following strategy: 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 sold under the brands Remeha, Baxi, De Dietrich, Heatrae Sadia, Potterton, Brotje, BaxiRoca, Chappee and Baymak.
The company takes great care of relationships with partners, investing heavily in employees and strengthening ties with foreign partners. BDR Thermea strives to offer customers comprehensive solutions in the field of heating and hot water supply based on innovative technologies.
Products under the Baxi brand
The company claims that Baxi boilers embody the latest technologies and the wealth of experience accumulated by the corporation over the years. Maximum efficiency combined with reasonable price gives the best performance.
More details on each boiler of this trademark you can read it by selecting it in one of the corresponding sections: , or , where by selecting the one you are interested in boiler, you can read it reviews, look options, download instructions and get to know other nuances By specific boiler.
The range of Baxi household gas boilers is very large. Let's take a closer look at the products of this company, bringing the series of boilers into tables for ease of perception.
Gas boilers Baxi series LUNA-3 COMFORT
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 nice touch is the presence of a room temperature sensor on the board.
The gas system of boilers in this series is equipped with an electronic flame modulation system, electronic ignition and steel flame dividers. Boilers can operate when gas pressure drops to 5 mbar, which is important in Russian realities. Moreover, it is possible to burn not only liquefied gas, 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 made of 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 outside temperature sensor, and then the heating mode will be based on the outside temperature.
Among other things, these devices have a lot of security systems. This includes flame control, 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 250 Fi | LUNA-3 COMFORT AIR 310 Fi | ||||||
| 31 | 25 | 24 | 25 | 31 | 31 | 25 | 24 | |
| 10,6 | 9,3 | 9,3 | 9,3 | 10,4 | 10,4 | 9,3 | 9,3 | |
| Maximum consumption of natural (liquefied gas) m3/h (kg/h) | 3,52 (2,63) | 2,84 (2,12) | 2,78 (2,07) | 2,84 (2,09) | 3,52 (2,59) | 3,52 (2,63) | 2,78 (2,07) | 2,78 (2,07) |
| Max. productivity,% | 93,1 | 92,9 | 91,2 | 92,9 | 93,1 | 93,1 | 92,9 | 91,2 |
| Productivity at 30% power, % | 90,8 | 90,2 | 88,7 | 90,2 | 90,8 | 90,8 | 90,2 | 90,3 |
| Expansion tank, l | 10 | 8 | 8 | 8 | 10 | 10 | 8 | 8 |
| The combustion chamber | closed | closed | open | closed | closed | closed | closed | open |
| Temperature control range in the DHW circuit, °C | 35-65 | 35-65 | 35-65 | 35-65 | 35-65 | - | - | - |
| Nominal gas inlet pressure, mbar | 13-20 | 13-20 | 13-20 | 13-20 | 13-20 | 13-20 | 13-20 | 13-20 |
| 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 |
Wall-mounted boilers of this series are designed for outdoor operation. Boilers can operate down to a temperature of -15 °C.
Gas system LUNA-3 Silver Space similar to boilers .
The hydraulic system is characterized by the absence of an electric servo drive 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 regulator.
Otherwise, the boilers of these series are similar.
Technical characteristics of gas boilers from the manufacturer BAXI LUNA-3 Silver Space series
| Specifications | LUNA-3 SILVER SPACE 310 Fi | LUNA-3 SILVER SPACE 240 Fi |
| Max. useful thermal power, kW | 31 | 24 |
| Min. useful thermal power, kW | 10,4 | 9,3 |
| Max. consumed thermal power, kW | 34,3 | 26,3 |
| Min. consumed thermal power, kW | 11,9 | 10,6 |
| Max. natural (liquefied) gas consumption, m3/h (kg/h) | 3,63(2,67) | 2,78(2,04) |
| Max. productivity,% | 90,3 | 90,3 |
| Performance at 30% power | 88,0 | 88,0 |
| The combustion chamber | closed | closed |
| Power, W | 190 | 170 |
| dimensions - height, mm |
830 | 830 |
| dimensions - width, mm |
550 | 550 |
| dimensions - depth, mm |
250 | 250 |
| NET WEIGHT, kg | 42 | 41,5 |
Gas boilers Baxi series Nuvola-3 B40
Boilers series NUVOLA-3 B40 specially created for high hot water flows. Thanks to the built-in boiler, these units are capable of delivering 450 liters of water within half an hour, heated by 30 °C relative 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 enameled steel AISI 316L.
If there is insufficient water pressure, the pressure switch will operate. There is also a water freezing protection system 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 includes 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.
These are no longer just boilers, but a whole complex consisting of a wall-mounted boiler and an 80-liter boiler located on the floor. Moreover, the boiler is designed in such a way that you can 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 spaces.
Essentially 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. A low-temperature heating circuit kit (“warm floor”) is offered as a separate option. 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 ones from the a series 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, in essence, continuation of the MAIN Digit series. Despite its compact dimensions (730x400x299 mm), the boiler is equipped with a control panel with a wide LCD display. And its small size allows you to use the unit in confined spaces.
These boilers are also ultra-compact, like the previous ones. Their sizes are the same, but the series on which they are based is different - ECO-3 Compact.
Boilers ECOFour Available in both single-circuit and double-circuit. 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 would not be possible without a wide LCD display as part of the digital control panel.
New on the market is wall-mounted boiler of the fifth generation MAIN 5.
In addition to the above, BAXI has wall-mounted boilers of the LUNA-3, FOURTECH series.
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%, which leads to fuel savings of 35% over an annual period compared to traditional boilers.
In addition, condensing boilers still manage to operate silently. All thanks to a combustion chamber made of special composites.
LUNA HT Residential 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 can adapt to the quality and type of gas, chimney diameter and other parameters . In addition, they include a burner with full pre-cooking gas-air mixture, allowing to achieve a power modulation ratio of 1:7.
LUNA Duo-tec MP– powerful units, reaching 110 kW in this parameter. In addition, up to 16 boilers can operate in cascade. The power modulation coefficient of these boilers is 1:9.
Floor-standing gas boilers Baxi Power HT
Floor standing gas boilers BAXI- these are series POWER HT And POWER HT 230-320, and Slim And Slim HP.
Despite the high power (up to 150 kW), engineers in the series of units POWER HT managed to save compact dimensions. So, all boilers have a width of 45 cm. Moreover, 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.
Boilers Slim And Slim HP have cast iron heat exchanger And atmospheric burner. Power range from 15 to 62 kW. Moreover, in Slim HP There is also fiberglass insulation under the hood to keep heat loss to a minimum.
All of the above (and other) boilers can be found in the category: .
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