Solid fuel boilers top 10. Combined gas and solid fuel boiler: types. Which gas boiler is better to buy

Autonomous heating in many ways outperforms centralized heating. It can be turned on and off at your own discretion, adjust the temperature and significantly save on operation. The main thing is to choose the most optimal heating method - gas or solid fuel.

Features of gas boilers

Models running on "invisible" fuel have two indisputable advantages - they take up little space and are very affordable. They are ideal for houses and even apartments where there is no place to store firewood, briquettes or coal. Due to the closed combustion chamber and forced draft, which takes air from the street, there is no need to install the boiler in a separate room. Its small size allows you to hang the unit almost anywhere.

gas boilers have big choice dual models. They not only heat the room, but also provide a home hot water. Such devices are very economical: no need to spend extra money, because the water is heated simultaneously with the general heating system.

Solid fuel boilers: pros and cons

As a rule, solid fuel models are chosen by owners of non-gasified houses. The most profitable are units that use wood waste - sawdust and shavings. In addition, many boilers can “consume” different types of fuel at the same time.
Of particular interest are models with additional function stoves. The top surface is made of cast iron. It may have removable rings. During cooking, such solid fuel boilers allow you to save electricity or gas.
It is believed that gas models are more practical, since they do not need to be constantly looked after. However, you can choose a machine equipped with a hopper and automatic loading. Ignition, fuel supply and operation circulation pump regulated without human control. Many models can be connected to a room thermostat and use it to adjust the temperature. With one load of coal, the boiler is able to work up to 24 hours.
When choosing solid fuel boilers, you should be aware that they have one significant drawback: before installation, it is necessary to equip a special boiler room with a good hood.

Universal combined models

If you can’t decide between the two types of boilers, you can purchase a combined unit. It works well on both gas and wood or coal.
However, it should be understood that the installation of such a boiler will be expensive - at least two to three times more expensive than conventional models. But in the future, such devices are very practical in operation and allow you to save a lot.
Before choosing a specific model, it is necessary to calculate all possible costs: purchase, installation, fuel consumption. For example, gas boilers are much cheaper, but a tie-in to a gas pipeline can cost a considerable amount. On the other hand, building a storage room for coal and firewood can also be problematic. Therefore, only after weighing all the pros and cons, you can provide your home with heat for many years.

After the construction of a capital structure and the arrangement of its water supply, the next construction work is the organization of heating.

The system that heats the interior of the house is called heating, and consists of a boiler and heat-radiating elements.

The choice of energy carrier (, coal, firewood,) determines the type of boiler required for heating operation. A universal type of heating equipment is represented by boilers that combine the ability to work on several types of fuel.

The most common heaters of this type are combined gas-firewood boilers.

Universal boilers: combination of different types of fuel

Boilers for heating gas firewood combine the ability to work on two types of fuel: natural gas and (wood).

Each type of energy carrier has its own advantages that determine its choice in certain operating conditions.

A wood-burning stove makes it possible to organize autonomous heating that does not depend on the availability of a central supply and the cost of an energy carrier (as happens with gas).

The gas stove, in turn, allows you to operate the heating system without daily time spending and physical effort to carry, put them in the stove, ignite and heat the room. This fact explains the widespread gas heating in the private sector, laying of gas stations and installation gas equipment in residential buildings.

House equipped with only gas view heating, depends on the availability of a resource in the gas network, on its quality, composition, pressure inside the pipeline. Economic efficiency gas heating is determined by the price of an energy carrier, which the owners of the house are not able to control. Rather, they have to accept, in fact, an increase in the price of payment for heat in their own home.

The desire to save money and (available) leads to the transfer of the gas boiler to the economical service mode, when a small outlet water temperature is maintained.

The main heating of the house in the evening is shifted to a wood-burning stove.

After the installation of gas equipment in many houses, coal-wood stoves were dismantled, and the new construction of a solid fuel stove requires investment and professional skills. Therefore, a combined design, gas-wood boilers, has become a popular type of heating a gasified house.

Combined boilers: operating advantages

As arguments for the use of combined boilers, there are factors that make it attractive to purchase a universal type of equipment.

Ability to reduce heating costs(if you use less expensive firewood instead of expensive gas).

You can provide yourself with wood fuel on your own, armed with a chainsaw and leaving the city in search of dry trees.

Semi-automated process. Automatic operation in gas mode allows you to wake up in a warm room in the morning and come home to a heated living space in the evening.

Modern design and portability. Unlike capital brick ovens a metal boiler (if necessary) can be dismantled, rearranged in an adjacent corner or other room.

Gas-wood heating boilers allow the use of one heating boiler for two types of fuel.

As a rule, the gas source of heat is consumed at the time of day when automatic operation of the heating system is necessary: ​​at night, when everyone is sleeping, during the day, when family members go to work or study. Wood heating operates mainly in the evening and on weekends.

Most often, combined heating boilers provide for heating on solid fuel (wood) and the subsequent mode of maintaining the temperature on gas. The design of such boilers is equipped with only one combustion chamber, in which different fuels can be burned.

Combined gas-solid fuel boilers with two combustion chambers represent a complex consisting of two furnaces.

Such a boiler is more expensive to manufacture and sell, but at the same time it guarantees the reliability of the heating system, operating with the main and reserve type of fuel. The design of such boilers provides a combustion chamber for solid fuels and gas burners.

For boilers, gas firewood is characterized by large sizes.

Requirements for boilers gas firewood

Heating boilers combined with gas and firewood in the heating system must perform not only the function of heating, their design must guarantee other performance characteristics, namely:

• efficiency (reduction of heating costs);
• efficiency and high efficiency;
• security;
• environmental friendliness (complete combustion of fuel, no emissions);
• serviceability;
• independence from the power grid (or the possibility of such a mode);
• independence from human presence, possible automation.

In various designs, these requirements are satisfied to a greater or lesser extent. For example, not all boilers provide for electrical independence.

Often, an electric exhaust fan is installed in gas equipment, which ensures the complete removal of combustion products from the combustion zone.

In high-quality boilers, automatic elements are duplicated by manual control elements (the fan has a manual damper), which allow the device to be operated in the absence of electricity.

Choosing a gas firewood boiler: what to look for?

The power of the combined boiler is determined by the size of the area to be heated.

For an approximate calculation required amount heat experts believe that in a harsh winter, 1 kW of heat is needed to heat 5 m 2. The number of kW that a working structure can produce is indicated in technical passport. Various designs of boilers produce from 5 to 40 kW of heat per hour.

Gas-firewood boilers are combined designs that allow the use of both solid and gaseous fuels for heating.

The demand for these structures is formed by a combination of their characteristics, the ability to reduce heating costs, guaranteed to provide your home with energy and not spend everything. free time for maintenance of the heating system.

The cheapest type of heating a private house is, one of which is firewood. The calmness and comfort in the house will depend on how high-quality and suitable, exactly for your conditions, the boiler you install. Therefore, which solid fuel boiler is better for your home and according to what criteria to choose it, we will understand meticulously and thoroughly.

If you are going to buy a boiler for heating a private house, the first thing you need to know is the area of ​​\u200b\u200bthe heated room. After all, the power of the unit directly depends on this. According to manufacturers, the calculation is simple: every 10 m2 of area requires the production of 1 kW of thermal energy. With a total area of ​​the house of 150 m2, a power of 15 kW is enough. But everything is not so simple here.

Corrections must be made if:

• The ceiling height is more than 3 m;
• The number of window openings exceeds the norm;
• The house is not well insulated.

You also need to remember that in harsh climatic zones during the cold season, the boiler will have to be heated constantly, even at night. Therefore, it is better to choose a unit with a power reserve of 5-10 kW, which will allow you to control the intensity of combustion.

In addition to power, the following characteristics are important:

• Performance or efficiency is an important characteristic of a heating system. This ratio is directly related to design features equipment and method of fuel combustion. For solid fuel boilers, the efficiency is quite high, it is 80-98%.
• Operating cost. The reliability of the brand of boilers depends not only on the manufacturer, but also on the design solutions, materials used for the components and the body, the cost and availability of services, spare parts, and operating conditions.
• The type of fuel consumed is another important characteristic. When calculating the cost of heating in a private house, the price of the selected fuel in the region (coal, pellets, firewood) and the performance of the equipment are taken into account. The more expensive the fuel is and the higher the combustion rate, the more expensive the heating of a private house or cottage becomes.

Kinds

There are several classes of boiler equipment according to the principle of its operation:

Classic.
Quite traditionally arranged. They consist of a combustion chamber and an ash chamber, a tank for a water jacket, a chimney. All known types of solid fuels are used - firewood, sawdust, pellets, they can also be heated with coal. They are used in heating circuits with natural air circulation. Every 5-7 hours of operation it is necessary to load the next portion of fuel. The automatic control unit regulates the air supply to control the process of fuel combustion, depending on the temperature mode set on the display. AT best models a draft regulator is built into the chimney, the task of which is to force cold air into the chimney in order to keep the heat inside the furnace as much as possible.

Gas generating or pyrolysis.
These boilers have two combustion chambers. Firewood is placed in the lower firebox, where, under the influence of high temperature and in the complete absence of oxygen, the process of smoldering takes place. Carbon dioxide enters the upper chamber, burns there, the heat exchanger heats up. It is necessary to load fuel once a day. There are models of boilers with automatic and manual draft regulator. Look at user reviews on the forums, think about what is more convenient for you.

Pellet
Why are pellet boilers so popular in Europe? It is this equipment that requires minimal human presence and runs on environmentally friendly fuel. Pellets are granules made from sawdust, peat, wood and agricultural waste.

The main advantages of pellet boilers:
• high efficiency;
• wide range of adjustments;
• fuel is undemanding to storage conditions.

Among the shortcomings, we note the high cost of equipment and pellets.

Please note: if necessary, the pellet burner is covered with a sheet of iron on top and you can heat the system with coal or peat, firewood is also suitable.

Long burning.
These boilers are closest to pyrolysis boilers, but the principle of operation is slightly different. The furnace consists of two chambers, at the bottom there is smoldering and the formation of gases. In the upper chamber, the gas mixes with air and burns completely. According to the number of actions performed by gases in the flame tubes, they are divided into one-, two- and three-way. Three-way heat generators are considered the most efficient, because they select thermal energy as fully as possible. flue gases. On one load with firewood, it works for about two days, with coal - up to five. In addition, it can be fired with coke, pellets and petroleum products. The ideal decision for non-residential premises, dachas, garages.

In the instructions for the equipment, boiler manufacturers describe in detail which fuel will be used as the main and which is additional.

Production material: steel vs. cast iron
The main materials for the production of solid fuel boilers are cast iron and steel. Steel models have high thermal conductivity and are strong enough, while cast iron grades, with their fragility, have a long (up to 20 years) service life. When studying consumer reviews, the following summary was obtained.

Steel boilers

Advantages:
• allow you to actively use automation, sensitively respond to changes in operating parameters.
• have a high efficiency.
• easily tolerate temperature fluctuations.

Disadvantages:
• weak point: welds. Rusty, cracked, internally folded boilers cannot be repaired.
• equipped with only one heat exchanger.
• subject to corrosion.

Cast iron models

Advantages:
• prefabricated structure.
• the presence of the main and additional external heat exchange circuit.
• threaded connections, replaceable seals.
• are not afraid of corrosion (although with long term service covering

are covered with a film of “dry rust”, which, unlike steel corrosion, does not progress).

disadvantages
• subjected to thermal shock. With sharp jumps in temperature, fatigue zones appear.

Criterias of choice

We figured out the basic concepts, it's time to voice additional criteria that will help evaluate the ease of use of the models you are interested in, add individuality to them.

The presence of external insulation.
It is the external thermal insulation that makes it possible to reduce heat losses during heating of the boiler room, significantly slows down the cooling time of the boiler. It also allows you to load the furnace not earlier than after 7-12 hours, there is no need for "cold" kindling.

The number of elbows in the flue system.
If the boiler is straight, its performance is equal to the efficiency of a small indoor fireplace. The more economical the heater becomes, the more parts the chimney is made up of.

Pressurization system.
The presence of such a node reduces the requirements for the number of chimney elbows. At the same time, a high-efficiency boiler copes with the process perfectly, even with a clearly weak draft.
Devices with a pressurization design require constant monitoring of the seals of the furnace doors, the presence of the most inconspicuous gap ensures that smoke enters the living quarters of the house.

Energy independence
Like the ability to work in the event of a power outage. Boilers with natural circulation of the coolant operate in this mode. However, such equipment has a low coefficient useful activity, does not monitor the combustion process, unlike units with a volatile automatic control panel.

Temperature controller.
In the absence of a thermostatic unit, the system will have to be properly looked after. In the presence of a modern temperature control device, one load of the fuel chamber at a temperature of about 0 ° C is enough for a day.

Existence of the chamber of combustion of the fulfilled gases with lining.
If we compare boilers with and without lining function, it turns out that the former burn 25-45% less fuel for the same power output.
If you install a solid fuel boiler in order to save money, then the lining function is mandatory.

Boiler equipment security system
On the Internet, there are consumer reviews about cases of folding the walls of boilers inward. This situation occurs in cases of overheating due to violations of operating conditions. Therefore, take care of your boiler and consider a security system.

Regardless of whether the boiler is fired with coal or wood, the circulation of the heat agent is forced. To prevent overheating in case of circulation disturbance, a cooling heat exchanger is installed. It is built into the boiler, or installed at the outlet.

It is impossible to install an independent cooling circuit inside cast-iron boilers, so they mount it at the outlet of the device and supply it with a thermal valve that operates when the critical temperature is reached.

Some boiler manufacturers use shut-off valves that block the fuel supply when overheating.

To feel 100% sure of the safe operation of the boiler room, install a storage tank in the heating system. It will accumulate heat, if necessary, transfer it to heating devices. Such a buffer tank will increase the efficiency of the boiler, ensure automatic maintenance of an even temperature of the coolant, and reduce fuel consumption.

Contrary to popular belief, it is not at all the excessive pressure formed in the hydraulic jacket that folds the walls of the boiler, it is just released through the blast valve. The physical ability of the metal to expand folds the walls of the boiler, while the process takes place in the easiest direction, inward. Remember - normal pressure for the boiler long burning 1.5 barrels, and the maximum allowable coolant temperature is +95°C.

3 popular models of solid fuel boilers

When choosing a solid fuel boiler, study its functionality. Now the owners of private houses are concerned about finding a universal unit. Manufacturers expand product capabilities: offer models that work on different types fuel, automate the process as much as possible. Consider 3 models of solid fuel boilers within the parameters described above.

1. Candle 18 firm AREMIKAS (Aremikas), Lithuania
Fuel: firewood.
Type: prolonged burning.
Material: steel.
Power: 18 kW, which is enough to heat a house with an area of ​​​​50 to 120 m2.
Chimney diameter: 160 mm, thrust - 15 Pa.

The shape is elongated cylindrical, the minimum burning time of one bookmark of firewood is 7 hours, the maximum is 34 hours. Compact, non-volatile, economical.

Review: “Experimentally determined the optimal size of logs of 10-20 cm, so that they fit comfortably in one hand. The better the wood is laid, the better it will burn. Ivan

2. Zota Mix 40 manufacturer Russia
Fuel: firewood, diesel, gas, coal, fractional coal.
Type: classic, combined.
Material: steel.
Power: maximum 40 kW.
Chimney pipe height: 8 m

The boiler is equipped with an electronic control module. The water jacket is located along the contour of the combustion chamber. The efficiency of the combustion process is ensured by a mechanical draft regulator, a thermomanometer for monitoring the temperature and pressure of the coolant.

Reviews: “I also have Zota, there are no problems with the equipment, but I had to contact the manufacturing plant ... If there are problems, call or write ... There are representations in many cities ... intelligent, responsive people” Peter.

3. Alpine Air Solidplus-4, Turkey
Type of fuel: coal, firewood.
Material: cast iron.
Combustion chamber type: open.
Power: 25.5 kW.
efficiency: 70%.

The boiler is treated on top with a special, corrosion-resistant paint. The manufacturer gives a guarantee for 3 years of uninterrupted service. Non-volatile, which allows efficient operation at low temperatures.

What consumers say: “I am the owner of a small country house with an area of ​​90 square meters. Bought Alpin a year ago. It works like a clock, without failures, both under heavy loads and not very much. I chose a cast iron boiler because it keeps heat for a long time. Happy with the purchase, good value for money." Alex.

Buying heating equipment should be after a thorough study of the technical characteristics of the device, reviews on the forums from real consumers, and an analysis of your own needs. Only a properly selected unit will help create a comfortable atmosphere at home and fill it with cozy warmth.

"gas-solid fuel".

After carrying out all the capital construction and water supply, the next thing to do is take care of heating the house. A combination boiler can come to the rescue.

You can find out the price and buy heating equipment and related products from us. Write, call and come to one of the stores in your city. Delivery across all territory of the Russian Federation and the CIS countries.

The gas-solid fuel boiler is becoming more and more popular with property owners every year. Its main advantage is that it combines the possibility of using several types of fuel: gas, wood, pellets, coal, ...

Gas-solid fuel boiler Atem Zhytomyr-9

Accordingly, this type of equipment saves money well and allows you not to depend on a particular type of fuel and its presence or absence. If the main type of fuel runs out, the combined gas-solid fuel boiler will switch to the use of an auxiliary type of fuel.

Before purchasing a combi boiler "gas-solid fuel", you must consider the following:

1. Combined units with a capacity of less than 40 kW are mounted in any room. Those larger than 40 kW require a separate space (boiler room).
2. The boiler room will require an area of ​​at least 12 m² with a height of at least 2.2 m.
3. The floor and walls of the room must be lined ceramic tiles or plaster, that is, a material that does not burn.
4. The room should be equipped with ventilation, as well as windows facing the street. The size of the windows must be calculated according to the capacity of the boiler.
5. Where chimney floor slabs and roofing cake , fire-prevention cuts are installed, and the pipe is separated with a mineral sealant that does not burn.
6. To increase the traction force, a deflector and a spark extinguisher are attached to the chimney head.

If you decide to connect a gas-solid fuel boiler to gas on the main, you must remember that the first “start-up” is carried out in the presence of a Gas Service inspector. He must also put a mark in the boiler document on putting it into operation.

gas firewood

The advantage of universal gas-firewood heating boilers lies in autonomy: a smooth transition of the system to burning wood in the absence of gas. Also, if desired, you can connect the structure, because the necessary connections and pipes are attached to the boilers.

Such universal gas-firewood boilers can be single-circuit and double-circuit, so it will not be difficult to connect or heat water in a flowing way.

The disadvantages include the large dimensions of such units. Most often they require a separate room for installation, and imply complicated service. Typically, such boilers are produced only on the floor type.

Combined gas-firewood boilers for the home imply increased requirements. The rules and regulations for operation are described in PPB, SNiP and SP.

The combined gas-firewood boiler for a private house includes the following elements:

1. Furnace chamber. It is made from cast iron or steel. The boiler can be with one firebox or two (more convenient). In the double version, firewood is burned in the upper section, and firewood is installed in the lower section.
2. Contours of hot water supply and heating. They are produced by companies specifically for heating, or for heating receiving hot water(two-circuit). DHW heating in a flow way.

The universal gas-firewood heating boiler assumes savings. This can be verified by looking at the following table.

High-quality wood and gas equipment is produced in Russia: Zota MIX, Kupper PRO (Teplodar), Karakan (STEN), PARTNER (KOSTER), STS (Steel Solid Fuel Systems). As well as foreign companies: Austria and Germany ("Wirbel"), Finnish concern "Jaspi" and others.

It should be noted that in foreign analogues, defects in the assembly and are less likely to be noticed. They boast reliability and quality. However, the domestic manufacturer is constantly improving in accordance with the wishes of customers.

Prices for combined heating boilers "wood-gas" depend on the country of manufacture, on the brand's popularity. For example, the company model "PARTNER" ("BONfire") will cost an average of 23 thousand rubles. Much will depend on the configuration, power and other indicators. But "Jaspi" will pull on all 130 thousand rubles. The takeoff is large, however, unlike the Finnish one, where everything is regulated by automation, in Russian counterpart all boiler settings will have to be carried out independently.

coal-gas

The universal gas-coal boiler is environmentally friendly and easy to maintain. However, when choosing this type of construction, you will have to constantly monitor the presence of solid fuel, because coal runs out quickly. If suddenly you come to the conclusion that "two in one" does not suit you, then you can always replace the burner - and the boiler will already work on natural gas.

Most often, a combined coal-gas boiler is allowed to be fired with firewood. For example, in technical specifications In the double-circuit model "Birch B" of the manufacturer "Atem" in the paragraph "fuel" is indicated "natural gas / coal" (see table). However, buyers use such a boiler for heating and firewood.

Manufacturer and model

Characteristic

ATEM (Zhytomyr, Ukraine) Berezka V

The boiler is made of steel, is universal and absolutely independent of electricity. Acts as a budget solution for heating cottages, utility rooms, outbuildings. Units of brand "B" are created with the production of consumer hot water. Fuel - natural gas / anthracite (coal). The area of ​​the heated room is 125 m². Rated thermal power - 12.5 kW. The maximum gas consumption is 1.5 m³/h. Nominal gas pressure (min / max) - Pa 1274 + 100 (635/1794). The working water pressure is 0.1 MPa. Efficiency when using solid fuel - 78%. Efficiency when using natural gas - 90%. Weight - 119 kg. DHW water consumption - 280 l / h. The combustion chamber is open (chimney). The number of circuits is two-circuit.

Gas-coal-firewood

The advantage of the gas-firewood-coal boiler is that it does not depend on electricity. This allows you to create autonomous systems heating. Fuel for such a unit is available in any locality and, moreover, at a low price. The wood-coal-gas boiler from the manufacturers listed in the table below is easy to service and has an attractive design.

Manufacturer and model	Characteristic
KSTG-10 outbreak (Russia)	This company has been on the market since 2003. It is a dynamically developing and reliable manufacturer. Boiler type - single-circuit. The combustion chamber is open. Installation - outdoor. Heating area - 200 m². Power - 20 kW. Gas is natural. Operating temperatures - 95 ºС. Efficiency - 77%. Weight - 70 kg.
Outbreak KSTGV-12.5 (Russia)	This model of the "coal-firewood-gas" boiler is non-volatile and stable when operating at reduced gas pressure. Due to the optimal design of the combustion chamber, the boiler has a high efficiency. Built-in water heater that provides hot water. Includes a gas pressure regulator. The body of a copper is steady against difference of temperatures. Type - double-sided. The combustion chamber is open. Installation - outdoor. Heating area - 125 m². Power - 12.5 kW. Gas is natural. Type of solid fuel - firewood, coal. Boiler - built-in. Operating temperatures - 95 ºС. The material of the heat exchanger is steel. Efficiency - 83%. Automatic shutdown - no. Weight - 120 kg.
Raton KS-T-12.5 (Belarus)	The boilers are designed for heating individual residential houses, buildings and structures equipped with continuous water heating systems with natural coolant circulation and an open expansion vessel. Type - single-circuit. The combustion chamber is open. Installation - outdoor. Heating area - 130 m². Power - 12.5 kW. Type of solid fuel - firewood, coal,. Display is not. The material of the heat exchanger is steel. Ignition is mechanical. Efficiency - 77%. Weight - 138 kg. The service life of the boilers is at least 15 years.
Brestselmash KST 12.5 kW (Belarus)	According to the type of fuel, the boilers manufactured by JSC "Brestselmash" belong to multi-fuel boilers designed for burning solid and gaseous fuels by means of re-equipment that does not require the dismantling of the boiler. Installation - outdoor. Heating area - 125 m². Power - 12.5 kW. Gas is natural. Type of solid fuel - firewood, coal, peat. Display is not. Operating temperatures - up to 95 ºС. The material of the heat exchanger is steel. Efficiency - 90%. Weight - 180 kg. Designed for heat supply and hot water supply of residential buildings and buildings for domestic purposes, equipped with water heating systems with natural circulation, with a working water pressure of up to 0.1 MPa (1.0 kgf / cm²) and a maximum water temperature at the outlet of the boiler up to 95 C°.
Boiler PARTNER 24 (Russia)	The advantages of this company's products are in their own innovative unique design developments. The manufacturer carries out guaranteed high-quality components, raw materials and materials. This is a stable high-tech production. The combustion chamber is closed. Installation - outdoor. Power - 24 kW. Type of solid fuel - firewood, coal. Efficiency - 80%. Weight - 108 kg. Height - 79.5 cm. Width - 42 cm.

Firewood-coal-pellets-gas

Currently, these units are offered by: the manufacturer of the universal boiler "Cooper" "gas-firewood-coal-pellets", the manufacturer "Raton" and others.

A large selection (pellets, firewood, coal, gas) gives such a boiler a great advantage. In the absence of one type of fuel, you can always switch to another type and stay warm.

Manufacturer and model	Characteristic
Teplodar Kupper OK15 (Russia)	Boiler type - single-circuit. The combustion chamber is closed. Installation - outdoor. Heating area - 150 m². Power - 15 kW. Gas is natural. Display is not. Efficiency - 78%. The diameter of the chimney pipe is 150 mm. Weight - 98 kg. Double-turn heating system, formed by a removable visor, which ensures complete flame extinguishing in the tube sheet. In addition to the standard water jacket, the firebox has a heat exchanger. Power regulation from 30 to 100% (combustion regulator can be installed on the boilers). A spacious firebox that allows you to load firewood 400 mm long horizontally and 500 mm vertically, or two buckets of coal. The presence of a tubular electric heater allows you to maintain heating systems after the end of the combustion process.
Raton KS-TG-35U (Belarus)	Boiler type - single-circuit. The combustion chamber is open. Installation - outdoor. Heating area - 340 m². Power - 35 kW. Gas is natural. Type of solid fuel - firewood, pellets, coal, peat. Display is not. Ignition - electric. Operating temperatures - 95 ºС. The material of the heat exchanger is steel. Efficiency - 77%. The boiler is designed for heating residential buildings, which are equipped with continuous heating systems with natural or forced circulation of the coolant.
Teplodar Uyut-10 (Russia)	"Uyut" is budget heating boilers for rooms up to 100 sq. m. The furnace is in a horizontal position, which allows heating the boiler with firewood up to 0.5 m long. The high efficiency of the boiler is ensured by the original design of the water circuit: stagnant zones are excluded, and the area of ​​the heat-removing surface is increased to 1.1 sq.m. Possibility of installing a gas or pellet burner. Boiler type - single-circuit. The combustion chamber is closed. Installation - outdoor. Heating area - 100 m². Power - 10 kW. Gas is natural. Type of solid fuel - firewood, pellets, coal. Display is not. Ignition is mechanical. Efficiency - 72%. The diameter of the chimney pipe is 115 mm. Weight - 67 kg.

gas pellets

A pellet-gas boiler is equipment that easily changes its operation from heating with one type of fuel to heating with another. This usually happens within 15 minutes.

It is also possible to replace the burner in the event of a conversion. Many models have a tubular electric heater available.

It is allowed to connect a balloon.

Efficiency pellet-gas boiler reaches 90%.

The unit has several combustion chambers. The kit includes two burners, as well as many regulating and locking devices. It has a high degree security and automation. But despite this, a gas-pellet boiler, like any combined gas boiler, requires compliance with the norms of PPB, SNiP (some excerpts are described at the beginning of the article).

Do not forget to clean the boiler from time to time. During maintenance, it is necessary to remove accumulated wood dust, soot from the electric drive and moving elements.

What do you need to work on pellets?

To convert the boiler to fuel pellets, you need to install a pellet burner, which is connected to the fuel bunker. After all operations, the operation of the boiler is as follows:

• along the conveyor from the fuel bunker, the granules enter the burner;
• electric ignition occurs immediately by means of a piezoelectric element;
• the built-in fan is activated in the burner, which increases the pressure, and the combustion of the pellets occurs at a high temperature raised artificially.

Typically, gas-pellet boilers are made from cast iron, and due to their large dimensions and weight, the structure is placed on a concrete base.

What do you need to run on gas?

Pellet boilers with a gas burner are connected, first of all, to cylinders and. Such units are gaining popularity in the construction of houses and plots where natural gas is planned to be carried out soon.

To connect a gas burner, it is necessary, first, to close the unused furnace with an airtight hatch. Then, in a place specially designated for gas equipment, you need to install a burner fixture. After all, set the switch to gas consumption. Everything. Alteration took no more than 15 minutes of time.

Combined boiler Wirbel ECO-CK 20

Firewood-pellets-gas

If you are interested in the design of this type of heating, the table below describes the manufacturer of gas, solid fuel and pellet boilers, its most popular model and a brief description.

Manufacturer and model

Characteristic

Atmos DC 18 SP (Czech Republic)

The new series of combi boilers "ATMOS" DC 15EP(L), DC 18SP(L), DC 25SP(L), DC 32SP(L) allows ecological combustion of wood according to the generator gasification principle in combination with a burner for pellets, natural gas or extra light fuel oils (depending on which burner is built into the boiler). Boiler type - single-circuit. The combustion chamber is open. Installation - outdoor. Heating area - 300 m². Power - 20.5 kW. Type of solid fuel - firewood, pellets. Display is not. Boiler - external (optional). Boiler volume: 78 l. The material of the heat exchanger is steel. Overheating protection - yes. Frost protection yes. Thermostat - yes. Ignition is mechanical. Efficiency - 92%. Weight - 429 kg. The advantage of this model is that the boiler takes up less space compared to a large number of boilers. With regard to environmental operation, the boiler, according to CSN EN 303-5, belongs to the 3rd class.

Thus, combined boilers for heating a house are an excellent option for obtaining not only heat, but also saving money. Since there is always a choice of fuel and its autonomous switching, in the absence of one specific type of fuel, your house will be heated at any time of the year. Combined boilers for solid fuel and gas are reliability, high performance and versatility.