It is fair to note that gas boilers with atmospheric burners still remain one of the main products on the heating systems market. They are used both in private houses and in apartments of small buildings. The power of the most popular models is about 15-35 kW. But maximum value reaches 100 kW. Among gas options Burners with this design are found only. This device is quite sufficient for heating a small room.
Features of gas boilers with atmospheric burner
Regarding the advantages of such units with this type of burner, we can say the following:
The disadvantages of this development are also obvious:
- since the boilers have an open combustion chamber, there is potentially a threat of an emergency;
- The air intake diagram provides for certain operating conditions of the boiler. As a rule, boiler rooms are equipped in accordance with safety regulations.
As you can see, on the one hand, comfort and ergonomics are ensured, and on the other hand, the safety of the heating system is reduced. Heating of the room can reach 200 square meters. There are both single-circuit and . Service life thanks to reliable design can last up to fifty years.
Operating principle of the equipment
The main heating device is an atmospheric burner. It heats the heat exchanger (in most cases cast iron) due to the gas supply. The design usually includes:
- nozzle;
- burner head;
- ejection tube;
- air regulator.
The essence of the process is ejection, that is, mixing two media and feeding them in a certain direction. Atmospheric burners can be:
- with partial mixing;
- with complete mixing.
Mixing is done in advance. In the first case, half of the air is combined with gas through nozzles, and 50% enters the combustion chamber directly. In the second case, suction involves connection gas mixture with a full volume of oxygen. Models with this form of mixing are not supplied to the CIS countries. with an atmospheric burner need a good gas supply. If the pressure is below 17 mbar, the main component of the heat generator is damaged (the holes in it become larger), and subsequently the equipment turns on with a noticeable pop.
The atmospheric burner is ignited by a pilot burner, which in turn is activated by ignition (piezo or electric). When heated to desired temperature heat exchanger, the main burner is switched off. This is controlled by a special sensor. To increase the temperature, the gas supply valve opens.
Characteristics
The main characteristics include the following:
- power up to 100 kW;
- weight on average reaches several tens of kilograms;
- large-sized models;
- the amount of heated water is 10-30 liters per minute;
- efficiency – up to 92%;
- multifunctional electronic unit.
Manufacturers
Popular manufacturers of boilers with atmospheric burner are the following:
- Buderus;
- Viessmann;
- Vaillant.
Among the new models stands out Buderus Logano G124WS (20 – 32 kW), Viessmann Vitogas 100F (29 – 60 kW) and Vaillant atmoCRAFT (65 – 115 kW).
Heating gas boilers have a complex structure. Their design includes combustion chambers, gas burners for boilers, and they are equipped with automation. Double-circuit equipment also includes boilers that heat water for economic needs. Regardless trademark and models gas boiler, its most important part is the burner. The efficiency of the entire operation largely depends on it. heating system home, as well as saving fuel resources.
Classification of gas burners
In a device called a gas burner, the process of mixing the supplied gas and the intake or forced air occurs, followed by combustion of the combustible composition in the combustion chamber. It can operate under conditions of main gas supply, as well as from a cylinder or a special tank. The process itself depends on the characteristics of the burner and the ability to customize it to certain conditions.
Depending on the method of air supply, gas burners are divided into two types:
- atmospheric - an air-gas mixture is obtained due to the natural absorption of air from the surrounding space and mixing it with the supplied gas;
- supercharged, using a fan to force air;
- combined.
In the first case we are talking about boilers with open combustion chambers, and in the second - with closed ones. Also, gas burners for heating boilers have different type power regulation:
- single-stage – the simplest and most affordable;
- two-stage – with two automatically switching operating modes;
- smooth two-stage - with soft flame adjustment between two stages;
- modulated - the most efficient and reliable, with precise and quick adjustment depending on changes temperature regime coolant. It is characterized by high cost.
What to look for when choosing
When purchasing, you should take into account the operating conditions of the heating equipment, the features of its operation and capabilities. Maintenance. The dimensions of the gas burner must be in accordance with the dimensions of the boiler firebox, otherwise, instead of reliability and durability, you will end up with a burnt-out combustion chamber.
Each of the burners has its own characteristics, thanks to which one or another model is chosen for each specific case.
When choosing a gas burner, the following is of particular importance:
- manufacturer;
- characteristics;
- model;
- price;
- equipment compatibility.
Atmospheric burners
This design is a perforated tube profile section, into which gas is supplied. A reduced pressure is created in the tube, due to which air is sucked into it directly from the room where the boiler is located. As a result, a flammable substance is formed that supports the combustion process after ignition of the wick using piezo or electrical element. Such burners have another name - injection.
Atmospheric burners are quite often called gas burners, designed for heating boilers equipped with open combustion chambers.
The gas burner option under consideration is perfect for homes small area, up to 100 sq. meters. Atmospheric gas-burner for a boiler, as a rule, cheaper than forced-air analogues. But the cost modern models with automatics is high.
Advantages
Atmospheric burners are widely used among owners of private houses. To their positive characteristics include:
- noiselessness;
- compactness;
- independence of most models from power supply;
- reliability due to design simplicity;
- low operating costs;
- reasonable price.
Flaws
ABOUT weaknesses we can say the following:
- low power;
- low efficiency (no more than 90%);
- sensitivity to frequent changes in pressure of the supplied gas (the need to install additional automation, in particular, a control relay that responds to changes in pressure);
- maintaining a high level of cleanliness of the room where the boiler is located to avoid clogging the burner with dust.
Pressure surges can lead to burnout of the gas burner nozzle when the gas supply is reduced, or to burnout of the heat exchanger when the flame height is too high.
Pressurized burners
For use with boilers equipped closed camera combustion, forced-air, or blowing, burners are designed. The air here is forced by fans. In this case it appears additional opportunity flexible control of the power of the gas-air mixture flow, in connection with which, there is a real achievement of high efficiency indicators.
Pressurized burners have a more complex design. It is noteworthy that the air in this device It is supplied in parts, but it mixes with gas almost instantly. Gas boilers, in turn, also have their differences from those that work in tandem with atmospheric burners.
Schematically, the boiler is represented by barrels inserted into each other different diameters and depths in such a way that their bottom is at the top. A coolant circulates between the walls, heated by the burner torch from several sides at once - on top and on the sides. This design ensures high performance of the equipment.
A significant difference between forced-air burners and atmospheric burners is that the former are considered not integral part boilers, but with additional equipment that is purchased separately.
Modern pressurized burners are necessarily equipped with automatic equipment, ensuring uninterrupted and reliable operation heating equipment. Externally, they look like a block, inside of which there is the burner itself with a built-in electric fan.
The devices under consideration are divided into:
- vortex, equipped with round outlets. Provide powerful air flow and stable combustion;
- direct-flow, supplying the combustible mixture through outlet openings having different shape(circle, slot, rectangle).
Advantages
It should be rightly noted that forced-air gas burners:
- safe - the combustion process occurs in an isolated space;
- highly productive and highly efficient, thanks to their design features,The efficiency is about 95%;
- insensitive to pressure changes - a decrease in the indicator is compensated by the presence of a fan;
- environmentally friendly;
- have the ability to replace with other types of burners.
Flaws
It is not so easy to find equipment that is free of shortcomings. They are also present in blower burners:
- the presence of noise during operation dictates the need to install the boiler in a separate room;
- dependence on electricity requires the presence of a UPS in the system;
- the volumetric dimensions make it impossible to install heating equipment in small rooms;
- the high cost of the device prevents its use by all categories of consumers.
Combination burners
They are produced for combined heating boilers that can operate on both gas and liquid fuel (fuel oil, diesel fuel). Such devices do not require replacement when switching from one combustible mixture to another. But the switching process itself is quite complex and requires the presence of a professional.
The burners in question are fully automated, which minimizes the human factor. They have functions for controlling flame power, combustion mode and other equally useful processes.
Combination burners have not gained popularity among homeowners due to complex design and high price, combined with low efficiency.
Proper care is the key to long-term operation
During operation, the gas burner needs timely cleaning of soot. It appears during operation and, if accumulated in large quantities, can lead to sudden ignition. Scheduled equipment inspection and regular maintenance will help you avoid troubles. heating device and a gas burner.
At self-cleaning It is recommended that you read the attached instructions included in the package. But a more prudent decision would be to contact specialists who have experience in this field. In this case, the work will go much faster and better, with the least amount of dirt.
Not a single building located in a changing climate can do without a heating system. climatic zone, since heating creates an acceptable indoor microclimate and allows a person to live and work in comfortable conditions. Heating boilers are universal heating devices created specifically for these purposes.
Types of boilers. Atmospheric heating boilers
One of the most common types of such equipment in Russia and other countries is a gas boiler. It operates either on natural gas or liquefied gas. Half of all boilers sold are gas boilers, as the type of fuel they use is one of the cheapest available today.
Depending on where the heating equipment is installed, gas boilers are distinguished between wall-mounted and floor-standing. Floor-standing, in turn, are divided into two more groups: atmospheric boilers heating (with an atmospheric burner) and forced-air.
Atmospheric burners have more simple design, and therefore cost less and are quieter. Supercharged ones have greater efficiency, which is why they cost much more. In addition, they can have both a gas burner and a liquid fuel burner. But more on that in the next article, but now we’ll talk about atmospheric heating boilers, their advantages and disadvantages.
Gas enters atmospheric boilers due to excess pressure in the gas main. As already mentioned, such boilers are much cheaper.
Atmospheric boilers can quickly fail if there is low gas pressure. But there are also those that are capable of operating at 2-3 times lower pressure in the gas line. Therefore, it is advised to choose a boiler that allows falling gas pressure up to 5-6 mbar.
The most preferred are boilers that can operate at a power of up to 100 kW, as this allows them to operate over a wider range with changes in gas pressure in the main line. In addition, the operation of such boilers is cheaper.
Atmospheric gas burners are an integral part of the heating boiler
An atmospheric gas burner is an essential part of a heating boiler. Some models may be an exception Russian production, which were created for gasification of certain brands of domestic universal-type boilers. Air enters the combustion zone of atmospheric burners due to the injection effect. This means that the gas that enters the burner pipes also takes with it required amount air for normal combustion.
Typically atmospheric heating boilers already configured at the factory to operate using natural gas, but most manufacturers have kits for converting atmospheric burners to liquefied gas. Only specialists can install such a kit and configure the burner to work with liquefied gas.
As already mentioned, atmospheric burners are especially sensitive to changes in gas pressure. The gas pressure in the line should not go beyond the minimum mark, otherwise the burner pipes may begin to burn out. Many European manufacturers, due to the harsh Russian realities, were forced to lower this threshold to 8 mbr. To prevent fire from occurring, the burners were equipped with a gas pressure control relay, which turns it off if the pressure drops or becomes lower permissible norm. When the pressure returns to normal, the burner resumes operation.
In addition, atmospheric burners in boilers also react to unstable, low voltage. This applies to all types of burners as well as to all energy-dependent equipment. During power surges, the automatic electronic components of the burner may fail. If the voltage drops to 180-160 V, gas valves burners may not open. This problem can be solved by installing a high-quality stabilizer. The best option– provide the boiler with an uninterruptible power supply.
Thus, the main advantages of boilers with an atmospheric burner are as follows:
- They operate silently;
- Have quite high level efficiency;
- Easy to maintain;
- Boilers of various capacities are available on the market.
The main disadvantages are the dependence on draft and the mandatory presence of a supply and exhaust ventilation system.
In addition to all of the above, atmospheric boilers are very sensitive to construction dust. When it clogs the burner pipes, the passage of gas into the combustion zone becomes more difficult. This causes burnout of the burner tubes. In order to avoid this problem, it is necessary to minimize boiler operation during repair work, install a tightly closing door in the boiler room, which will prevent dust from entering the boiler; regularly clean the room where the heating equipment is located, clean the burner at least 2 times a year, and for the period of repair or construction work- every month. If you follow these recommendations and regularly contact service department for servicing atmospheric boilers, they can last for decades.
To understand which boiler is better, atmospheric or turbocharged, to use for a specific heating system, you need to understand some design features and the operating principle of the devices.
An atmospheric gas boiler can be wall-mounted or floor-mounted, as well as single-circuit, intended only for working with the home heating system, or double-circuit (with an additional coil) - for heating water.
A combustion chamber is installed in such a boiler open type, that is, air intake occurs directly, in a natural way. It is precisely because of this feature that atmospheric installations are located in special boiler rooms, which can be equipped in a private country house, as a rule, does not pose much of a problem. But if it is planned to install a gas boiler in an apartment, then this factor becomes not only a disadvantage, but also an obstacle.
In addition, to remove combustion products, a traditional chimney with access to the roof of the building is required, which, again, is quite feasible in a private house, but difficult in an apartment building. Apartments may be exceptions old building with existing chimneys, which still need to be modernized over the years, but the percentage of such houses is small. If you plan to install an atmospheric boiler in a country house, then in addition to boiler room equipment, you will need initial stage construction, design and install a chimney taking into account all the rules and regulations. It is imperative that the furnace room be equipped with effective system ventilation, which will provide the flow of oxygen necessary for the combustion process.
Operating principle of an atmospheric boiler
An important difference between an atmospheric boiler and a turbocharged one is the type of burner. In the first model, it is a set of nozzles, the diameter of which is small enough to ensure gas exits at a certain pressure. It also regulates the amount of incoming oxygen, and, accordingly, the intensity of combustion.
The principle of operation is based on the fact that the burner heats the heat exchanger, which can be made of cast iron or steel, thus heating water or other coolant. And the combustion process is ensured and supported by mixing the gas mixture with air before supplying it to the burner nozzles. The latter, based on the principle of mixing, can be with partial or complete mixing, the operating efficiency and efficiency of which are slightly higher, but it is important to note that they are almost never found on the domestic market.
All of the above factors can be considered either features or disadvantages of the equipment, depending on specific situation, but atmospheric boilers have two important and undeniable advantages, which often sway the consumer in their direction. First of all, this is the fact that most models of this type are non-volatile, and therefore preferable in operation in the presence of constant interruptions or unstable power supply. The second advantage is low price(in comparison with turbocharged models of comparable power) equipment. It is important to note the safety of operation, for which the traction sensor is responsible, and which is equipped in almost all models of this type.
- We offer to buy floor-standing gas boilers (atmospheric) with delivery in the Tavago online store.
- Price for floor-standing gas boilers (atmospheric) from 2220 rubles.
- Read instructions and reviews about Floor-standing gas boilers (atmospheric).
IN modern houses and apartments, almost one hundred percent present central heating and hot water supply. However, in some cases the highways run too far from the building, and if we talk about suburban buildings, then this is even more likely. But every person, without exception, wants to live a comfortable life, so buying a gas boiler is one minimum required, without which there is no need to talk about comfort.
Our website presents a large assortment heating technology, and in this particular category we bring to your attention atmospheric gas boilers. These boilers are considered one of the most economical options for organizing heating.
Atmospheric gas boilers are a one-piece design with built-in burner. Low level noise and the release of waste materials through natural draft make an atmospheric gas boiler a welcome guest in every home.
The attractiveness of such a boiler lies in its low operating costs and a wide range of capabilities with unstable fuel pressure in the pipeline.
Most models of atmospheric boilers are equipped with one circuit, i.e. designed to heat the room. To connect the hot water supply circuit (DHW), you need to purchase an additional boiler indirect heating, or a combined boiler with an electric heating element. Additionally, equipment such as expansion tank, circulation pump and etc.
A double-circuit atmospheric gas heating boiler acts as a kind of mini-boiler room because By default it is equipped with a boiler and piping.
In terms of functionality, atmospheric gas boilers are in no way inferior to forced-air ones. The use of atmospheric boilers is rational and economically justified, since they are fully adapted to the domestic gas supply system and have high power and durable (up to 50 years of uninterrupted operation).
It is important that the installation of atmospheric heating boilers is carried out by qualified workers, taking into account all design and estimate standards, only then will the equipment have maximum efficiency and serve you for as long as stated in the production documentation.
You can buy double- and single-circuit atmospheric gas boilers at minimal prices in Moscow in the Tavago online store. You can get comprehensive advice on the selection of this equipment by calling us at the phone number indicated in the contacts, or during a personal meeting at one of our physical branches.