A gas boiler without electricity is a traditional model of a floor appliance that does not require additional sources energy. It is advisable to install devices of this type if there are regular power outages. For example, this is relevant in rural areas or summer cottages. Manufacturing companies make modern models double boilers.

They have reduced gas consumption, as well as the ability to adjust heating.

Many popular manufacturers produce different models non-volatile gas boilers, and they are quite efficient and of high quality. Recently, wall-mounted models of such devices have appeared. The design of the heating system must be such that the coolant circulates according to the principle of convection.

This means that the heated water rises and enters the system through the pipe. In order for the circulation not to stop, it is necessary to place the pipes at an angle, and they must also be large in diameter. And, of course, it is very important that the gas boiler itself is located at the lowest point of the heating system.

It is possible to separately connect a pump to such heating equipment, which is powered by the mains. By connecting it to the heating system, it will pump the coolant, thereby improving the operation of the boiler. And if you turn off the pump, then the coolant will again begin to circulate by gravity.

Boiler design without electricity

A gas boiler independent of electricity in its configuration has:

• 2 gas burners - ignition and main;
• The combustion chamber - in such devices it is open for better traction;
• Automation;
• Boiler security system - temperature sensor, reverse draft valve (it is needed to regulate the operation of the chimney);
• Heat exchanger.

The system of a non-volatile gas boiler must have an open expansion tank, since when the coolant heats up, the liquid expands. And this is what contributes to the circulation of the coolant. But when expanding, surpluses are formed that enter this tank.

Ignition in such gas boilers occurs with the help of a piezoelectric element, which acts when a button is pressed. With its help, the pilot burner is ignited, and the main gas burner is already ignited from it, thanks to which the heat exchanger heats up and the desired liquid temperature is maintained.

After a while, the gas does not flow and the burner goes out, after the heat exchanger has cooled down, everything repeats.

Advantages and disadvantages of independent boilers

The main advantage of this gas boiler is the lack of connection to the mains. Since this is an additional savings and it is not required to bring the outlet.

It should be noted that these devices are easy to use. As well as system security. This type of boiler is the simplest. And suitable for heating like small house as well as large rooms.

Noiselessness during operation of a two-circuit device independent of electricity is ensured by the absence of pumps. Such devices are reliable and durable. This can be explained by the fact that such boilers have been produced for a long time and their work has been tested in practice for more than one year. An independent boiler produces high efficiency. A double-circuit boiler easily provides the desired temperature in the house, as well as hot water.

In such devices, the heat exchanger lasts much longer than in other models of gas boilers.

We note the disadvantages of such a boiler:

A gas boiler independent of electricity should only be installed in a house with good draft in the chimney. This is absolutely necessary for the safe and high-quality operation of the device. If the draft is insufficient, then the fire will constantly go out, due to the triggered reverse draft valve.

In the presence of an independent gas boiler, the heating system does not always work as we would like. For example, if you install pipes of the wrong diameter or do not calculate their desired location. All of these factors are very important. It is better to design a heating system for a specific gas boiler, then there is a guarantee that no failures will occur.

Boiler operation

Since there is no access to electricity, there is a thermogenerator in the double-circuit boiler, which stops the gas supply to the burner. This happens when the coolant acts on the regulator. Automation resumes the gas supply to the boiler when the coolant cools down to a certain temperature.

Ignition occurs with the help of a piezoelectric element, which sets fire to the pilot burner (it burns constantly) and, if necessary, the main heat source is ignited from it. It also contributes to the heating of the liquid in the heating system.

Types of independent gas boilers

There are such types of boilers operating without electricity:

• single-loop- apply only to the heating system;
• double-circuit- these are devices that, in addition to heating, also provide hot water for business needs.

Rice. 1

Double-circuit gas boilers, in turn, provide hot water in 2 ways: flow and storage.

Selecting an independent boiler model

Gas boilers operating without electricity must fully correspond to the area of ​​\u200b\u200bthe heated room. That is, the power must correspond to the load.

Double-circuit models of foreign manufacturing companies are often more expensive than domestic ones, as they are more advanced and have attractive design. The manufacturer of the gas boiler must be chosen carefully, it is important to make sure that the service center of this company is in the city or nearby. Since, if necessary, it will be possible to find spare parts for repairing the device there.

The most popular manufacturers of such equipment are Alphatherm, Beretta - Italy, Attack - Slovakia, Protherm - Czech Republic, Electrolux - Sweden.

Rice. 2

Domestic models of independent boilers are cheaper than foreign ones, but are considered less reliable. But it should be given credit that such devices are already adapted to our weather conditions and the parameters under which they must work.

A gas boiler without electricity can be selected with a steel or cast iron heat exchanger. The most popular are cast iron devices. This is explained by the service life: cast iron will last 30 years, and steel 15-20 years.

Cast iron is not only stronger, but also by design it is provided that the walls of such a heat exchanger are thicker. This prevents the walls of the heat exchanger from burning through. Such a device has been tested in practice.

Also, the heat exchanger can be corroded. A cast iron appliance is much less susceptible to such damage, unlike steel. Corrosion on the heat exchanger appears if the temperature drops to the point where condensate appears. And this very moisture leads to corrosive processes.

Also, the cast-iron heat exchanger in its design consists of sections. If necessary, you can change the section, and not the entire device. Now, impurities are added to the cast iron alloy, which make it even stronger. So, it will not crack during improper transportation.

Rules for installing a gas boiler

It is better to install a gas boiler independent of electricity in separate rooms with a good ventilation system, as well as to ensure air flow there. Since, due to the open combustion chamber, air is constantly “eaten up” by the boiler. The products of combustion are removed through the chimney.

Rice. 3

When installing a wall-mounted independent gas boiler, a coaxial chimney is installed, the design of which is called a “pipe in a pipe”. A coaxial chimney is not suitable for all devices and a specialist recommendation is needed.

If necessary, you can install a circulation pump. Mount it through the bypass. It is recommended to put cranes near it: 1 at the inlet and 1 at the outlet. Separately, a tap is placed on the main line, which must be closed when the pump is running. With such taps, if necessary, it is possible to repair the pump without draining the water from the system. And before the pump it is recommended to install a filter.

There are certain conditions that must be met:

• in the boiler room must be positive temperature;
• fire safety. The walls in the boiler room must be equipped with non-flammable material. As a rule, asbestos or metal sheets are used.
• The first start-up of the boiler after installation must be supervised by a specialist.

The specialist must also check the correct installation of the chimney. It is necessary that it correspond to the power of a gas boiler without electricity and the standards established by the competent organizations. It is better that for each heater there is separate pipe. According to the standard, the chimney must be straight, if it is not possible to make it so, then there should not be more than 3 turns.

The length of the chimney should be about 5 meters. It is necessary to select and install a heating unit in accordance with the pressure in the gas pipeline, usually it is 1.270 MPa. The documentation that is attached to the device (passport) always indicates the permissible limits of this indicator. Sometimes gas pressure indicators in winter time are declining. Knowing this feature of the region, you need to accordingly make a choice of a device without access to electricity.

The climatic company "Termomir" offers a wide range of heating boilers various kinds and countries of production - Russia, Germany, Italy, Czech Republic, etc. Read the information or call our consultants to select the right boiler model.

A heating boiler is a device that, by means of the combustion of fuel (or electricity), heats the coolant for water heating of premises through a system of batteries and radiators.
Boilers are designed for space heating from 30 sq. m and up to several thousand. Household low-power heating boilers are used for heating and hot water supply of private and country houses, cottages, cottages, garages, workshops, cafes and restaurants, schools and other educational and children's institutions, as well as swimming pools, baths and saunas. In addition, they are used for individual apartment heating.
Production and industrial boilers are designed for heating workshops, warehouses, hangars, enterprises, and other large buildings and premises. For objects of a very large area in the heating system, it is allowed to combine boilers into a cascade of two or more devices.
Small and simple heating boilers can be placed in the basement, in the attic, in the garage, even in the kitchen and bathroom. The installation of high capacity floor standing boilers is recommended in a separate boiler room. Some models of boilers have an outdoor (street) installation.

Modern boilers of a new generation are equipped with programmable control units with various automatic settings and functions (for example, a weather-dependent control system), as well as devices for remote control of the boiler - a GSM module (controlling the operation of the device via SMS messages).

The selection of heating boilers is carried out according to the main parameters: the required heating area and boiler power, type of energy carrier, number of heating circuits, type of combustion chamber, type of burner, type of installation, steel or cast iron heat exchanger, etc.

To determine the power of a heating boiler for heating a house or apartment, a simple formula is used - 1 kW of boiler power for heating 10 m 2 of a well-insulated room with a ceiling height of up to 3 m. Accordingly, if heating of a basement, a glazed winter garden, rooms with non-standard ceilings and etc. boiler output must be increased. It is also recommended to increase the power (about 20-50%) when providing a boiler and hot water supply (especially if heating of water in the pool is necessary). Our consultants will help you calculate the exact power of the boiler according to the heating area.

Comparison of heating boilers by type of fuel:

"Economy class"- inexpensive and simple boilers, the service life is shorter than that of boilers of a higher category. Some manufacturers have budget models of boilers, for example,

Autonomous heating systems based on gas boilers are considered the most convenient and efficient.

They hardly need constant attention, able to maintain a constant temperature, have protection against possible problems- overheating, flame extinction, other malfunctions.

However, most units are too dependent on the availability and quality of the power supply.

Any voltage drops cause failure of the control board or other devices, and a power outage completely stops the heating system.

To solve these problems, non-volatile gas boilers are used.

Non-volatile gas boilers operate only with the help of mechanical components and parts. They do not need the use of electricity, which greatly increases their capabilities.

In the conditions of Russia, where in winter the temperature drops much below zero, it is important to ensure the continuity of the heating systems. At the same time, most power networks are overloaded, and in some villages there is no connection at all.

This makes non-volatile boilers popular and preferred units. All the main components of the unit are controlled only by mechanical methods, but this does not impair the quality of heating the house.

Non-volatile boilers are devoid of many parts, which simplifies the design and makes the operation more stable and reliable. Most users do not consider the lack of remote control and other additional features to be a significant drawback.

Everyone understands that a lot of add-ons make the device more vulnerable and unreliable.

NOTE!

The design of non-volatile boilers arose much earlier than more modern dependent units. The long period of existence allowed manufacturers to work out assembly technologies and achieve high performance.

What is the difference from the usual?

The difference between a non-volatile boiler is the absence of all nodes that need power. There is no built-in circulation pump, turbofan.

Management is carried out using mechanical devices - valves, mechanical sensors, regulators. This makes the design very simple and reliable, but all processes take place in a natural way.

For example, smoke removal is carried out using stove draft in the chimney. The air is taken directly from the room. These features make the mode of operation dependent on the mass external factors .

For example, draft in a chimney varies with the weather, direction and strength of the wind. Drafts can blow out the flames. In addition, good ventilation is needed in the room, since the boiler actively burns out oxygen.

Many users solve these problems by installing external devices- a circulation pump and a turbo nozzle to enhance and stabilize thrust. This makes the mode of operation more intense and even.

Advantages and disadvantages

The advantages of non-volatile boilers include:

• there is no dependence on the availability and quality of power supply;
• simplicity of design, lack of minor details;
• guaranteed continuity of the process of heating the house;
• boiler cost and repair work significantly lower than that of volatile models;
• maintenance and cleaning can be done independently.

• the protection system is limited to a few sensors;
• there is no possibility of remote control;
• The operation of the boiler depends on external factors that cannot be adjusted.

Despite some drawbacks, non-volatile boilers are a practical and reliable solution. In some settlements, they have no competitors due to power outages.

Device

The main elements of non-volatile units are the primary (main) heat exchanger and gas burner. They provide the main function of the boiler.

In addition, the design contains:

• three-way valve, in which the temperature of the coolant is reduced to a predetermined value;
• gas equipment providing control and fuel supply;
• secondary heat exchanger (only for double-circuit models);
• temperature and pressure sensors.

The list of nodes is small, but this is the main advantage of non-volatile boilers. The fewer parts, the higher the strength and load resistance of the structure as a whole..

Kinds

There are not as many varieties of non-volatile boilers as more modern dependent models. For example, there are no turbocharged units (with mechanical air supply).

There are the following varieties:

• single-circuit. Provide only heating of the coolant for the heating circuit;
• double-circuit. They perform two functions - heating the coolant and preparing hot water.

According to the installation method:

• wall. Hanging mounted on bearing walls or strong vertical surfaces;
• floor. mounted on the floor or non-combustible stand. Most non-volatile units are made in the floor version;
• parapet. These are units that have the characteristics of several groups of gas boilers. They have a lot of features that make them practical and user-friendly.

NOTE!

As a rule, non-volatile boilers have a floor single-circuit design. This is the easiest and most reliable option. This approach makes it possible to guarantee an uninterrupted supply of coolant to the heating system in difficult conditions.

Principle of operation

The operation of a non-volatile boiler is based on the flow heating of the coolant in the flame of a gas burner. The liquid enters the boiler, goes through the heating stage and enters the three-way valve.

There, a colder "return" is mixed in a certain ratio. This allows you to give the coolant the temperature set by the mode. If the boiler is double-circuit, then a secondary heat exchanger is installed between the main heat exchanger and the three-way valve for preparing hot water.

Smoke is removed by natural draft, so a connection to a common house chimney of sufficient length is required.

Fluid circulation also occurs naturally, which requires compliance with the standard slope when installing the system.

Rating TOP-5 non-volatile gas boilers

Consider the features of some models of non-volatile units:

Lemax Premium-12.5

Non-volatile floor boiler of domestic production. The power of the unit is 12.5 kW, so the area of ​​\u200b\u200bthe room should not exceed 125 square meters. m.

The model is equipped with a steel heat exchanger, overheating protection and a gas supply controller.

Main performance characteristics:

• Efficiency - 90%;
• natural gas consumption - 1.5 m3/hour;
• dimensions (W-H-D) - 416x744x491 mm;
• weight - 55 kg.

Lemax gives a long-term guarantee for its boilers - the user receives technical support for 3 years.

Lemax Premium-20

Another floor-standing non-volatile gas boiler made in Taganrog.

Its power is 20 kW, which is optimal for most private two-storey houses. The maximum area for this unit is 200 sq. m.

Boiler parameters:

• Efficiency - 90%;
• maximum heating water temperature - 90°;
• pressure in the heating circuit (max) - up to 3 Bar;
• natural gas consumption - 2.4 m3/hour;
• dimensions (W-H-D) - 556x961x470 mm;
• weight - 78 kg.

The single-circuit design is intended for heating the coolant, but if necessary, an external indirect heating boiler can be connected.

Lemax Patriot-12.5

Non-volatile parapet model from Taganrog. Boiler with specific features.

Non-volatile unit, but the combustion chamber is of a closed type. Boiler power 12.5 kW, suitable for heating 125 sq. m.

Main technical characteristics:

• Efficiency - 87%;
• maximum heating water temperature - 80°;
• pressure in the heating circuit (max) - up to 2 Bar;
• natural gas consumption - 0.75 m3/hour;
• dimensions (W-H-D) - 595x740x360 mm;
• weight - 50 kg.

The main advantage of parapet boilers is low fuel consumption - almost half as much compared to conventional models.

Siberia 11

Production of Rostov manufacturers of heat engineering. A units are available in single and double circuit versions, which expands the choice.

The power is 11.6 kW, allowing you to heat a house up to 125 square meters. m.

Main settings:

• Efficiency - 90%;
• maximum heating water temperature - 90°;
• natural gas consumption - 1.18 m3/hour;
• dimensions (W-H-D) - 280x850x560 mm;
• weight - 56 kg.

Rostov units are positively evaluated by specialists and ordinary users.

MORA-TOP SA 40G

The Czech gas non-volatile boiler with a capacity of 35 kW is designed for use in rooms up to 350 sq. m. The massive structure is equipped with a cast-iron heat exchanger.

Options:

• Efficiency - 92%;
• maximum heating water temperature - 85°;
• pressure in the heating circuit (max) - up to Bar;
• natural gas consumption - 3.9 m3/hour;
• dimensions (W-H-D) - 630x845x525 mm;
• weight - 151 kg.

Cast iron heat exchanger has a sectional design of 5 departments. There are pressure and temperature sensors.

Reviews

For completeness of information, you should consider the feedback from users operating non-volatile boilers in their homes:

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Alas, even in the Moscow region, not all cities and towns have a high-quality and reliable power supply, to say nothing of settlements remote from the center. Voltage in country houses often differs from the nominal by tens of percent, emergency interruptions in the supply of energy can last for weeks. In such conditions, it is very reckless to create a heating system based on a volatile boiler. It is more reasonable to use a non-volatile methane boiler that does not consume electricity from the network. What are the features of this technique and what does the market offer?

Application area

Non-volatile gas-fired boilers are used in heating systems with natural or forced circulation of the coolant, as well as in hot water systems. Prepared water can be used as a coolant, or - if it is not prohibited by the manufacturer - household antifreeze such as Hot Blood, Dixis, Warm House-65, Olga. Most often, non-volatile gas boilers are operated in the residential sector - for heating apartments, country houses permanent residence. Less often - they are used for heating small commercial buildings.
All devices that have successfully passed certification in the Russian Federation operate on natural gas with a nominal pressure of 1274 Pa (130 mm of water column) in accordance with GOST 5542–87. When replacing nozzles (main burner and igniter), some models can operate on liquefied (cylinder) gas.

The most widespread in the Russian Federation are single-circuit non-volatile boilers designed for heating. The heat exchangers of the heating circuit are made of cast iron or steel. Models of boilers with cast-iron heat exchangers are designed for 20–25 years of operation, the service life of boilers with steel heat exchange devices usually does not exceed 10-15 years.

Double-circuit models are also used - the presence of a second circuit allows you to simultaneously use them for both heat supply and domestic hot water supply (with a low intensity of water consumption). The secondary circuit coil, as a rule, is made of copper pipe, its heating occurs due to contact with the coolant.

Injection atmospheric burners are used as burners in non-volatile gas boilers.

Safety, reliability, simplicity and ease of operation of non-volatile boilers are largely ensured by the use of modern non-volatile automation units. In boilers with imported (primarily Italian and German) automation, the most significant savings in gas consumption are achieved due to the automatic modulation of the burner power. Boilers with automatic Russian production usually turn out to be the most attractive at the purchase price.

The user adjusts the temperature by setting the boiler water thermostat based on personal feelings "hot - cold". But some models can also be paired with a room thermostat mounted in the control room, which monitors temperature fluctuations and gives commands to reduce or increase the gas supply to the main burner.

In areas where in winter the gas pressure at the entrance to the house is significantly reduced, experts strongly recommend the use of non-volatile boilers that can operate stably when the pressure drops (up to 300 Pa and below), without turning off, but only proportionally reducing heat output. It is unacceptable to leave the operating device unattended for a long time, since in the event of an emergency shutdown of the gas and the boiler stopping, the heating system may defrost or other property will be damaged by the cold.

Placement and installation of a non-volatile boiler, as well as gas supply to it is carried out by a specialized construction and installation organization according to a project agreed with the operating enterprise / trust gas facilities. At the same time, the requirements of the equipment manufacturer for air temperature and ventilation of the room, as well as the requirements for the characteristics of the enclosing structures, next to which the boiler is mounted, must be strictly observed. Self-activity here is unacceptable, as it is fraught with serious consequences, up to the complete destruction of a heated house as a result of a gas explosion!

During the installation of a non-volatile boiler, the closest attention should be paid to chimney. The device of the chimney to which the device is connected must comply with SP 42-101-2003 "General provisions for the design and construction of gas distribution systems", meet the requirements of the "Rules fire safety for residential buildings, hotels, hostels, buildings of administrative institutions and individual garages. PPB-08–85” and the requirements of the “Rules for the production of work and repair of furnaces, chimneys and gas ducts”.

The chimney, as a rule, should be located in the internal main wall of the building (although options are possible). Its minimum open area is determined by the boiler manufacturer and in most cases should not be less than ½ × ½ brick. The height of the chimney above the roof of the building depends on the horizontal distance from its axis to the ridge and should be:

♦ not less than 0.5 m above the ridge, if the pipe is located at a distance of up to 1.5 meters from the ridge;
♦ not lower than the level of the ridge, if the pipe is located at a distance of 1.5 to 3 meters from the ridge;
♦ not below the line drawn from the ridge down at an angle of 10° to the horizon, if the pipe is located more than 3 meters from the ridge.

It is important that the smoke channel is strictly vertical, smooth, even, without turns and narrowing. Its height from the lower level of the apparatus must be at least 5 meters. Connecting others heating devices to the chimney of a non-volatile boiler is not allowed.

Some models of non-volatile boilers, including parapet models, have a closed combustion chamber and communicate with the environment using a horizontal coaxial chimney. It is mounted in a through hole in the outer wall and is supplied with a windproof cap. The coaxial chimney simultaneously carries out both the removal of flue gases and the supply of air for combustion.

Using a coaxial chimney allows you to install non-volatile boilers in rooms without vertical chimney. This significantly expands the scope of non-volatile boilers. However, during operation, non-volatile boilers with a coaxial chimney are more often than devices connected to vertical smoke channels, are turned off due to gusts of wind blowing out the flame of the burner, or freezing of the gas duct (especially models without modulation, operating in the “ON / OFF” mode and allowing condensation to form in the chimney).

Often problems arise due to the destruction of the masonry of the wall through which the coaxial chimney passes through the condensate.

When using a heating system with natural circulation of the coolant the heated coolant from the boiler supply pipe rises through the pipes to the upper floor, where it passes through the heating radiators, then descends to the lower floors, where it also gives off part of the thermal energy in the radiators, after which it enters the return pipe of the heat generator. Such heating systems are also called gravitational.

Note that it is necessary to create a heating system with natural circulation of the coolant "with skill", choosing the right pipe diameters, maintaining required angles slope on the horizontal sections of their laying. When building a system with natural circulation, it is necessary to take into account the requirements and recommendations of the boiler manufacturer, since the guarantee for the device depends on this.

When installing a non-volatile boiler in a heating system with forced circulation of the coolant system configuration, pipe diameters and their slopes during installation are usually not so critical. But in this case, the pressure in the heating system in working condition should not exceed the allowable one. In order to avoid destruction of the boiler heat exchanger, it is necessary to provide a safety valve in the system.

Without energy

For the operation of the automation of a non-volatile boiler, electricity supplied from outside is absolutely not required. In the simplest case, the control of the gas valve of the boiler is carried out due to the voltage that occurs when the thermocouple is heated, which is in the flame of the pilot burner, which, in turn, is manually ignited using a piezoelectric element. The voltage on the solenoid gas valve coil keeps it open, providing gas to the main and pilot burners. When the ignition burner goes out, the gas valve instantly stops the gas supply to the boiler, thus ensuring complete safety in operation.

What does the market offer?

When choosing a technique, it is logical to first consider the possibility of using a non-volatile boiler with cast iron heat exchanger. Unlike boilers with steel heat exchangers, where it is necessary to constantly maintain the temperature of the heating water above the dew point, when operating cast iron boilers, even at a heating water temperature of about 30 ° C, there is no fatal damage to the heat exchangers by low-temperature corrosion.

Most models equipped with a cast-iron heat exchanger are supplied to Russia from EU countries. Equipment of European brands is Alphatherm Delta (Hungary), Alphatherm Beta (Slovakia), Attack (Slovakia), Beretta (Italy), Electrolux (Sweden), Protherm (Slovakia), Viadrus (Czech Republic), Fondital (Italy).

So, floor-standing non-volatile gas boilers Electrolux FSB-P are supplied in the power range from 14 to 60 kW. This is a fairly new line of high efficiency floor standing boilers with a cast iron sectional heat exchanger made of lamellar gray cast iron with high performance.

Thanks to the application new technology DROP STOP The heat exchanger of the Electrolux FSB-P boiler is resistant to hydraulic shocks and thermal deformations.

The use of NANO FLAME technology, even at a gas pressure of 350 Pa, ensures stable ignition and long-term uninterrupted operation of an atmospheric gas burner. This technology allows the boiler to continue to work even when the pressure in the line drops to 220 Pa.

The burner of the Electrolux FSB-P boiler is protected from burnout by preventing the surface of its flame tubes from heating to critical temperatures.

Manufacturers of non-volatile gas boilers with cast-iron heat exchangers from Russia and the CIS countries often create devices using imported components, which makes it possible to obtain equipment of sufficiently high quality, the price of which is approximately 10–15% lower than that of imported products with similar characteristics.

As an example, we can cite a line of cast-iron non-volatile boilers "Titan N" from CJSC "Gaztekhprom" (Ryazan) with a nominal heat output of 25 to 60 kW, which are equipped with gas valves and control units SIT (Italy) with a full safety group corresponding to all domestic and European requirements.

Coppers "Titan" are completed with atmospheric torches of firm POLIDORO (Italy) with fire pipes from stainless steel.

Here we also mention the Taganrog boilers "Lemax Leader GGU-ch" with a capacity of 19 to 55 kW, equipped with a VIADRUS (Czech Republic) heat exchanger made of high-quality gray cast iron 4 mm thick, as well as gas boilers Siberia KCHGO with an imported cast-iron heat exchanger, burner and automation unit, manufactured in Russia at the enterprise CJSC Rostovgazoapparat in the city of Rostov-on-Don.

Separately, it is worth mentioning cast-iron floor gas boilers KCHG from LLC Servisgaz, Ulyanovsk. These boilers use a high efficiency cast iron heat exchanger with an acicular convective heating surface, heat resistant slotted stainless steel main burners. The gas pressure stabilizer built into the gas block ensures uniform combustion of the gas-air mixture on the main burners with a constant heat output, regardless of the gas pressure in the network, without requiring adjustment.

Well-known to many buyers are KChM-5-k boilers from OAO Kirovsky Zavod, equipped with non-volatile SABK automation (version 17; 23; 36). Their undeniable advantage is their versatility - the boiler, originally designed to run on gaseous fuels, can later be easily converted to run on solid or diesel fuels, and even on waste oil.

To the main advantages of gas floor standing non-volatile boilers with steel heat exchangers can be attributed to their small weight, which is important when installing equipment in houses with "weak" walls and ceilings, increased resistance to hydraulic shocks and thermal loads, low inertia (devices quickly respond to changes in heat demand) and even more democratic than boilers with cast iron heat exchangers, price.

Among the imported equipment, we note single-circuit non-volatile floor-standing gas boilers Dakon of the P lux series, the maximum power of which is in the range of 18–50 kW. The devices are designed for heating various premises and can be integrated into both natural and forced circulation systems. The internal space of the steel heat exchanger of P lux boilers is formed by sections with nested economizers for the fullest use of the thermal energy of the combustion products.

DAKON P lux boilers are equipped with HONEYWELL CVI automation and are manufactured in two modifications - “ON / OFF” (modification Z) and with two-stage power control “HIGH-LOW” (modification HL). draft regulator, it significantly increases its safe operation.

Interesting models of non-volatile floor-standing boilers "Wolf KSO", equipped with a steel heat exchanger, are presented in the Russian Federation by Protherm. The boilers are assembled at the plant in Taganrog under the close attention of Protherm employees, which, according to the manufacturer, guarantees high quality and reliability. It is worth paying attention to AOGV - Beretta with a heat output of 11 and 17 kW, which were developed in accordance with the requirements of GOST 20219 "Household gas heating appliances with a water circuit".

In Russia, the positions of domestic manufacturers of non-volatile floor-standing boilers with steel heat exchangers are traditionally strong.

For example, Russian non-volatile heating devices of the Zhukovsky Machine-Building Plant are well known - single- and double-circuit heat generators of the Economy, Universal and Comfort series with a heat output of 11 to 63 kW. The devices are reliable and durable. The use of a steel heat exchanger with turbulators, a modern atmospheric slot burner and high-quality automation units in the apparatus, according to the representatives of the plant, made it possible to improve environmental parameters and increase their real efficiency.

All non-volatile boilers of the Zhukovsky Machine-Building Plant are certified by the State Standard of Russia, have a sanitary and epidemiological conclusion and a decision of the Gosgortekhnadzor of Russia for manufacture and use.

In the city of Borino, Lipetsk Region, since 1997, the domestic gas equipment plant OJSC Borinskoye has been producing non-volatile boilers equipped with a steel heat exchanger with a capacity of 12.5, 25, 31.5, 40, 50, 63, 80 and 100 kW. The plant provides warranty and post-warranty maintenance of its equipment, a "wide geography" of service centers and quite an adequate price both for the boiler itself and for its maintenance and repair.

Demand among buyers is enjoyed by thermal equipment Siberia manufactured by CJSC Rostovgazoapparat. In terms of thermal performance and design, these non-volatile boilers are not inferior to many foreign analogues. Siberia boilers use a carbon structural steel heat exchanger with a developed heat exchange area, Eurosit automation, and a WORGAS burner. Boilers are resistant to large gas pressure drops, have high efficiency. Basalt fiber is used for thermal insulation of the boiler.

A variety of non-volatile boilers with a steel heat exchanger is considered to be single-circuit and double-circuit parapet boilers. They are equipped with a closed combustion chamber and connected to a horizontal coaxial chimney. The boiler is mounted on the floor outer wall, in which a hole is previously made (with a diameter of about 300 mm) for the release of a coaxial chimney.

Large volumes of parapet boilers are supplied to Russia from Ukraine. As an example, we can mention DANI parapet AKGV 7.4-U-S (new) - a double-circuit parapet gas boiler with a sealed combustion chamber with the removal of combustion products through a horizontal chimney. This model is an updated series of Dani parapet boilers with the ability to connect to the heating system both on the right and on the left side. Supplied with a coaxial chimney kit.

We also note the Ukrainian parapet boilers "ThermoBar KS-GS-7.0 S" (OJSC "Bar Machine Works"), characterized by a long service life and an efficiency of at least 90%. The operating pressure of the boilers up to 2 kgf/cm² allows them to work with natural and forced circulation of the coolant. The boilers are equipped with a multi-section atmospheric stainless steel burner.

Parapet boilers of Impulse and BeleTo trademarks are spared from many shortcomings of parapet boilers from other manufacturers. Their heat exchangers are made of anti-corrosion steel 3–4 mm thick, which significantly increases reliability and service life (in some other parapet boilers, the heat exchanger is made of steel only 0.8–1.2 mm thick).

The BeleTo boiler can take combustion air from both outside and indoors. When taken from the room, the air is sucked into the boiler body from above, and not from below, which prevents the burner from clogging. Thanks to the two-section burner, the Impulse boiler has a power control range from 20 to 100%, and the BeleTo boiler 40 -100%, which is important for the Russian winter with its wide range of outdoor temperatures during the heating period.

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Boiler Protherm 40 TLO (35 kW)

Heating systems independent of electricity are installed in areas and settlements where there are serious problems with energy supply. Installing a non-volatile gas boiler is the only way to maintain a comfortable temperature in the room. These devices are used in gravitational heating systems, where the coolant circulates through pipes under the action of gravity and thermal expansion of water. Equipment manufacturers offer single- and double-circuit versions of such devices.

The principle of operation of the boiler

The equipment does not require connection to a power supply. Structurally, it provides a thermogenerator. When gas is supplied to the combustion chamber using a piezo ignition (triggered by pressing a button), the pilot burner ignites. It burns constantly, providing, if necessary, ignition of the main source of heat. He, in fact, heats the water in the heating system.

The coolant heated to a certain temperature acts on the thermostat, which turns off the gas supply to the main hearth. Giving off heat, the water cools and activates the gas supply mechanism. The gas supply is resumed, and it ignites from the "standby" burner.

Functional Benefits

The fact that a non-volatile gas boiler can function without electricity is not the only advantage of the device. The design of its chimney also ensures the safety of operation of such equipment. The channels provide for the installation of sensors that determine the level of thrust. If it decreases or if a reverse flow occurs, the gas supply to the combustion chamber is automatically stopped.

Design and operational features provide other advantages of such boilers:

• automatic control of flame intensity;
• the presence of piezo ignition;
• long service life of the heat exchanger;
• maintaining functionality with a significant decrease in gas pressure in the system.

Many models are equipped with a remote control, which makes their use even more convenient.

Installation Requirements

Double-circuit gas boiler

Single- and double-circuit non-volatile heating boilers are mounted in accordance with the requirements that ensure the natural circulation of the coolant.

These include:

1. Mandatory observance of slopes of pipelines in which water circulates.
2. Using a large diameter pipe to reduce resistance in the path of the coolant.
3. Additional installation in the expansion tank system, where excess heated water will fall.

In addition, it is necessary to strictly adhere to the standards for the installation of gas equipment. In particular, this applies to the installation of a ventilation and exhaust system.

Important! In case of violation of the requirements and norms state standards possible accumulation of carbon monoxide in the room. This is dangerous not only for health, but also for the life of all family members.

Involvement in the installation of the system of persons who do not have access to this type of work is strictly prohibited. All work is carried out by specialists who have passed the appropriate accreditation.

Boiler model options

A non-volatile floor boiler is more popular with consumers than a wall-mounted counterpart. It is characterized by simplicity of device and reliable operation. Manufacturers offer equipment of different capacities, which allows you to choose best option for a small cottage and for apartments with an area of ​​over 200 square meters.

Floor standing gas boiler

Install non-volatile floor boilers in a separate room where you can easily arrange a good supply ventilation. An open combustion chamber takes air from the room, and the exhaust gases are discharged through the chimney.

If it is not possible to select private room or build a furnace, then you should purchase a wall-mounted analogue. Relatively recently, suppliers began to offer non-volatile gas wall-mounted boilers. They do not take up much space, can be equipped with coaxial chimneys and have all the advantages of outdoor counterparts.

Modern models no longer require the mandatory presence of a gravitational heating system. They are perfect even for the hidden location of heating mains. In this case, the circulation pump must be installed separately.

Important! The pump must be installed on the return line and pump water into the boiler, and not vice versa. This will ensure efficient utilization of the heater and prevent it from operating with a small amount of water in the heat exchanger.

The pump is mounted through a bypass of a suitable diameter. It is advisable to put 2 taps at the inlet and outlet of the bypass, and also put a tap on the main line (it closes in case of forced circulation). In this case, it is possible to replace or repair the injection device without draining the water from the entire system. And to extend the life of the pump, you should install a strainer in front of it.

As you can see different variants gas boilers can be a great alternative to electric ones in cases where there are some problems with the power supply. They are simple in design, easy to use and quite affordable.