Gas boilers without electricity are single-circuit. Non-volatile wall-mounted gas heating boilers. Installation Requirements

If power outages are normal in your area, then you can choose a non-volatile option to create a good heating system. It can be a compact gas boiler of the required power. This technique is quite convenient and has many positive qualities.

Characteristics of gas heating boilers

The first question that most users have is how does this device work? It works great without electricity. This is achieved through the use of air currents or natural draft. A number of models are equipped with special safety sensors. They work if there is little or no air draft. When activated, the gas supply is stopped.

If we talk about the type of installation, then you can choose the floor option. Typically, such devices are quite voluminous and heavy. Their installation requires special work. If you are looking for a more compact option, then a wall-mounted boiler is a great choice. They are light and practical, save space well and fit easily into interior design.

The number of circuits, as in other models, can be of a different number. It is possible to create an indoor climate and heating running water using a double-circuit boiler. Models with one circuit will only work as a heating system. To ensure the necessary functionality of the device, a chimney should be installed and good ventilation should be developed.

Advantages of wall-mounted non-volatile boilers

Such devices have many advantages, thanks to which they have gained popularity among consumers:

• the system does not require electricity;
• profitability;
• compactness;
• high efficiency;
• operational safety.

A suitable model can be bought with delivery in Moscow and other cities of Russia, as well as in Belarus and Kazakhstan. To do this, just find the heating boiler you like in the catalog of our online store. We offer favorable prices, convenient service and installation services. A reliable heating system is your peace of mind and a sense of stability. Please yourself and loved ones with a warm atmosphere in the house!

Unfortunately, problems in domestic electrical networks are still present today in the age of astronautics. In the city, they are not so felt, but in suburban villages, power outages happen with enviable frequency. And the one who solves the problems of heating his home must take this situation into account. Therefore, experts recommend non-volatile gas heating boilers as the best option. Of course, taking into account the fact that a gas pipe has been laid in the village.

So, what is a non-volatile gas boiler? From the name itself, you can understand that this unit operates offline without being connected to the AC mains. It does not have an automation system that runs on electricity, a circulation pump and other electrical devices. Many may say that such heating equipment is the last century. Do not tell me, today on the market you can buy an excellent gas boiler without any bells and whistles, which, in terms of efficiency, is not inferior to volatile heating devices.

Typically, such boilers are installed in systems where the coolant moves according to the natural laws of physics. It rises by gravity from the boiler up the riser, passes all the circuits to the heating radiators and returns back to the boiler along the return line. Heating with natural circulation of the coolant is not effective in all schemes, so many developers are trying to use a two-pipe version of the distribution of heating pipes, where the ideal subspecies is a collector junction. So if you personally choose a non-volatile gas boiler (floor or wall), then immediately resolve the issue of piping.

Internal organization

Varieties and features of operation

Currently, manufacturers of this type of boiler equipment offer two types:

1. Wall-mounted non-volatile gas boiler.
2. Floor unit.

The first option has more compact dimensions and not very high power. The second one is bigger and more powerful.

It cannot be said that these devices are not automated at all. They have various sensors that respond to certain processes. The only thing is that the devices connected to them only work mechanically. For example, consider the design feature of the nozzle system.

In such boilers, two burners with piezo ignition are usually installed (that is, ignition occurs from a battery installed inside). One burner is designed to maintain the wick, it is called the pilot. The second supports the ignition process itself, it is called the main one.

• The boiler has a button that must be pressed when the unit is turned on.
• This produces a spark that ignites the wick on the pilot burner.
• And now the main burner is ignited from it.

wall model

Automation

Usually, in such boilers, a mechanical thermostat is installed, with the help of which the mode of heating the coolant in the heating network is set. The temperature sensor is built into the heat exchanger. As soon as the water heats up to the required temperature, a signal is sent to the thermostat, which turns off the main burner. The temperature drops below the set value, the main burner is ignited by the pilot. Here is such a simple principle of operation of non-volatile single-circuit (floor and wall) gas boilers.

If we talk about double-circuit non-volatile gas boilers, then everything is the same here, without any differences. Of course, another heat exchanger is added to its composition, which also has to be controlled. But the principle of operation is the same, and even more so the principle of temperature control. The only thing that needs to be noted is the fact that there are no models with a built-in boiler in heating boilers of this type. Usually, a separate tank with a heat exchanger inside is connected to double-circuit devices, through which hot water passes, heating the water in the tank itself.

Very often, especially in boilers from foreign manufacturers, a sensor is installed in the chimney that controls the draft. This device today is an integral part of almost all modern models. And it doesn't matter what fuel these units run on. As the saying goes, safety is the most important thing.

floor model

Advantages and disadvantages

I would not like to consider this heating unit from such a point, but its advantages are so obvious that consumers would like to show some of its shortcomings. You can not show any product with only one positive side. But let's start our analysis with her.

• First of all, it is the lack of electricity consumption. There are two positions here: the first is the complete absence of electrical appliances and devices, which means that there is no need to monitor their maintenance and repairs. Second - no receipts for the consumption of electric current. Full economy.
• There is no need to purchase and connect an uninterruptible power supply, with which you can maintain the heater in working condition.
• In the design of non-volatile wall or floor gas heating boilers, there is a small number of devices, appliances and assemblies. Therefore, they are more compact and light in weight.
• Without exception, all boilers of this category have a fairly high efficiency.
• Easy to install and connect, much easier than volatile counterparts.
• Presentable appearance. Manufacturers today pay more and more attention to this criterion. Therefore, such a device will fit well into any interior. I would especially like to note wall models that can be hung in the kitchen or in the bathroom.
• Double-circuit floor-standing non-volatile gas boilers can provide large country houses with heat and hot water for domestic needs. They have enough power for everything.
• High safety performance.

Non-volatile boiler with a boiler

Now for the disadvantages.

• First of all, I would like to note that boilers of this type can only work effectively if the pressure in the gas supply line corresponds to the passport data of the product.
• A prerequisite is a well-mounted chimney that will provide the boiler with good draft.
• An important requirement is perfectly functioning ventilation, with the help of which it will be necessary to remove fuel combustion products from the room.
• There are special requirements for such boilers, which are indicated in the operating instructions for the unit. They must be followed strictly and without fail.

Having considered all the pros and cons, it is necessary to draw a conclusion. If you fulfill all the requirements of the manufacturer and fire safety rules, then this is an excellent boiler that will work offline without connecting to the AC mains. And for many regions this is the best solution.

Don't forget to rate the article.

Approximate size of non-volatile gas heating boilers

There is also such a problem as a mismatch between the voltage in a given area or a particular house with the required one. Sometimes such interruptions can last up to one week or even more. Under such conditions, it becomes necessary to abandon the heating systems, which require electricity, and switch to the use of non-volatile boilers.

Having foreseen all the pros and cons, you can choose one of the appliances that run on other fuels, such as coal, wood, peat, etc. Well, and if there is gas supply to the house, then there will be no problems with heating the house. There are many models of boilers on sale that can operate not only on gas, but also on solid fuels - they are called combined.

Combined heaters have one design - this is a floor version. They can be single-circuit and double-circuit. The former are intended only for heating, the latter will cope with both heating and water heating for the needs of residents.

Floor scheme - boiler Lamborghini WBL 5

Combined options are heavy, as some of their elements are made of heavy alloys of cast iron or steel. In this regard, they are not available in a hanging version.

Another option for heating devices are boilers that operate only on gaseous fuels. They can be performed both in suspended and floor versions, and also have a single-circuit and double-circuit scheme.

Video - the principle of operation of the burner of a gas non-volatile boiler

How to approach the problem of choice?

An important note - such boilers should “be able” to work in heating systems with both forced and natural movement of the coolant, which is used as water (preferably purified), or antifreeze - coolant for domestic needs.

• Natural circulation is the movement of the coolant along the circuit under the influence of gravitational forces arising from heating the water and replacing it with cold water, due to the difference in density and the correctly planned slope of the pipes of the heating system.

• The forced movement of the coolant occurs with the help of a pump installed in the system, which creates more intense pressure in the circuit. Under such conditions, the system warms up faster, thereby saving gas. But such heating is possible only with the constant availability of electricity.

What is the conclusion - when purchasing a boiler in an area with an unstable supply of electricity, you need to choose a unit that will be effective with natural circulation.

• When choosing a gas appliance, it is necessary to take into account the pressure with which gas is supplied in Russian gas pipelines. Usually it is 1.270 MPa. The passport attached to the heating device must indicate the permissible gas pressure for this particular unit.
• If the boiler was purchased earlier and is designed only for heating with solid fuel, then in some models it is possible to replace the igniter and install a burner to convert it to gas.
• Non-volatile heating devices are reliable, simple and easy to manage. Subject to all safety measures during installation and operation, gas boilers are quite safe. In addition, they are equipped with automation, which is triggered when the gas supply is completed or the flame disappears, completely turning off the entire device.
• There is a wide range of models of domestic and foreign production on the market. The latter are considered more economical, since they have automatic devices that can control the intensity of combustion. Domestic devices are no less reliable, but also more affordable, and they are also better adapted to local conditions and parameters.
• The boiler must be equipped with a thermostat, with which you can adjust the heating temperature of the coolant. When it cools below the set temperature, the boiler automatically turns on the heating.

• In some areas, with the onset of winter and a decrease in air temperature, the pressure in the gas supply system also decreases. This nuance must also be taken into account when choosing a model for heating a house, and buying the option that will work smoothly both at normal and at reduced pressure. Subject to these conditions, the boiler will operate smoothly at any time of the year, but, knowing the peculiarities of the local gas supply system, it is necessary to control the operation of the boiler from time to time in winter in order to prevent the heating system from freezing.

Unit installation

The installation of non-volatile heating units is carried out according to a specially drawn up plan, which is agreed with the controlling fire and gas supply organizations. It is very important to create the necessary conditions for the normal functioning of the device:

• maintain a positive temperature in the boiler room;
• observe fire safety regulations during installation. Combustible wall material must be insulated non-flammable materials, such as asbestos or metal sheets;
• if the boiler is installed independently, it is necessary to start it for the first time in the presence of a specialist who will check the correct installation and operation of the device .

AT project plan installation of the boiler also includes a chimney system. It must comply with the established standards, which are developed by design organizations, depending on the power of the heater. The chimney must be individual for each heating device or have a section that allows you to remove the required amount from two or three devices.

According to the standards, the chimney, which is brought out through the roof and located one and a half meters from the ridge horizontally, must rise in height by at least half a meter. If it is removed through the roof at a distance of one and a half to three meters horizontally, it is raised at least to the height of the ridge.

When building a chimney, you also need to know that it should not have more than three turns, but it is better if it is perfectly straight. But, in any case, its total height in a straight line should not be less than five meters. From above, the chimney is covered with a special fungus made of metal; it will close the pipe opening from moisture and dirt.

Another version of the chimney is coaxial, it is not suitable for all types of heating boilers and a specialist recommendation is needed to install it.

Such a chimney duct does not require a large height and is arranged in the wall. Its installation will cost much less and will not be difficult. But it should be noted that, without forced electrical air circulation, it may not create the necessary traction, so the boiler will spontaneously turn off more often than with a traditional pipe. Another disadvantage is the formation of condensate inside the coaxial chimney.

Boiler models

For example, it is worth considering several models of boilers that are popular due to their functionality and convenience.

Gas boiler Viadrus G36 (BM)

This model is available in various capacities. To determine which one is suitable for a particular heating system, you need to familiarize yourself with the technical characteristics.

• Viadrus G36 is exactly the boiler that does not depend on the supply of electricity to the building. It has an atmospheric steel burner.
• For the smooth functioning of the gas valve, a thermoelement is built into the boiler, and it is able to create the right amount of electricity. Also, the device has a sensor that protects against traction overturning.
• This type of boiler is adapted to local conditions and works great, heating the coolant from 45 degrees and above.
• If it is necessary to connect a pump to this model of boilers to increase the pressure of the coolant, but you are afraid of interruptions in the power supply, you can have additional uninterruptible power supplies at home.
• For Viadrus G36 boilers, a coaxial chimney is well suited if it is not possible to arrange a traditional one for gas boilers.
• The positive quality of this unit can be considered the possibility of connecting an indirect heating boiler to it.
• When choosing a boiler, you need to stop at an option whose power is 15 percent more than required.

Gas boiler Protherm Bear TLO

Another proposed option for non-volatile boilers is Protherm Bear TLO. Its characteristics also deserve attention.

The following qualities can also be attributed to the positive characteristics of these boilers:

• work in systems with open movement of the coolant;
• have piezo ignition;
• open combustion chamber;
• the heat exchanger is made of cast iron;
• The efficiency is 87-92%;
• burner made of stainless steel;
• power is regulated in one step;
• has a winter-summer regime;
• automatic control carried out by a microprocessor;
• chimney draft is controlled;
• a heat exchanger made of cast iron is protected from condensation;
• overheating protection;
• flame intensity control;
• constant control of temperature and pressure of the heat carrier;
• operates on liquefied or main gas;
• the cooling circuit does not allow the coolant to heat up above 100-110 degrees.

Thanks to all these qualities, the operation of the boiler is not difficult even for a beginner. A sufficiently compact size with high work efficiency, as well as a neat design are also important, especially if the boiler is installed in the kitchen or bathroom.

A non-volatile gas boiler is recommended for areas with unstable power supply. Modern equipment connected to the power grid often breaks down and fails due to power surges in the network. This can become a serious problem in winter. So that the heat in the house does not depend on the vagaries of the power grid, consumers choose heating devices that work without electricity.

What are non-volatile boilers?

Combined non-volatile boilers operating on two types of fuel are available only in a floor version. Gas heaters powered by gas are available in two versions:

• Floor. This option is more popular than the wall option. Boilers that work without electricity are preferred by the owners of private houses. The floor-standing type of equipment has a simple device and is available in a wide range of capacities. There are heaters that can heat more than 200 m². They are installed in a special room with good forced ventilation.
• Wall. These models are chosen by consumers who cannot allocate space for a furnace. Manufacturers not so long ago began to offer the market wall-mounted non-volatile devices. They are good for their compactness, are equipped with coaxial chimneys and are in no way inferior in performance to their floor counterparts. The wall option is usually chosen for a small area.

What are the features?

Previously, if the gas heater was not connected to the mains, it lost its functionality and safety. Much has changed today. Modern boilers that do not depend on electricity networks have an additional device that generates electricity - it works from the heat released during the combustion of fuel. The resulting energy feeds complex automatic systems that ensure the stability and safety of work.

In non-volatile systems, there is no forced circulation of the coolant. The latter circulates under the influence of natural forces, it moves according to physical laws. If there are problems with electricity, circulation pumps cannot be used - the stability of the heater depends on the constancy of the coolant pressure. They produce two types of devices that work without electricity:

• single-circuit - they are bought to organize heating for a house or apartment;
• double-circuit - for heating, in parallel they provide the house with hot water.

Manufacturers also offer parapet models. A parapet boiler is a low-power apparatus. It has a closed combustion chamber. Suitable for small spaces. It can be with volatile or non-volatile automation.

Principle of operation

The autonomous heater has an igniter and a main burner. The igniter is pre-ignited, then the main burner ignites, which heats the coolant to a temperature set by the user. Having reached the set value, the device stops the fuel supply. As soon as the temperature drops to a critical value, the gas supply begins, which ignites from a burning igniter. In the absence of traction, the fuel supply is automatically cut off. The electrically independent heater system has an expansion tank, which is necessary for the liquid expanding due to heating. Ignition is carried out using a piezoelectric element, which is triggered by pressing a button.

Advantages

• The ability to work without electricity is their main plus. There is no need to do wiring, install a socket, this saves money.
• Simple design and safe use.
• Versatility - suitable for heating houses and apartments of different sizes.
• Silent operation - no pumps making noise.
• High efficiency.
• Durable heat exchangers.

Flaws

• It is not possible to achieve full circulation in the system. There can be many reasons, for example, the calculation of the thickness of the pipes. In such a system, it is extremely important to correctly calculate the diameter of the pipes and install them at a special angle. As a result, uneven heating of the room is possible.
• For correct operation, a chimney with strong draft is required. Lack of draft will cause the equipment to stop, the reverse draft valve will operate. The chimney must create a vacuum in the furnace from 16 to 20 Pa.
• Efficiency at the level of 90%, the average volatile boiler has an efficiency of about 93%.
• The temperature is controlled manually.

How to choose?

It is not so easy to choose a non-volatile boiler of foreign or Russian production on the market - there are too many brands, models, and design options. Imported ones are considered more economical, domestic ones are more affordable and better adapted to operating conditions. When choosing a model, it is necessary to take into account the pressure in the gas pipeline, at what minimum pressure a particular model is able to function. Next, the power is determined - 1000 W per 10 m².

When choosing a model, it is important to pay attention to the material of the heat exchanger. There are copper, steel, cast iron. Preferably - cast iron, it is stronger than steel and it has a longer service life. Cast iron heat exchangers can last up to 30 years. The walls of cast iron elements are thicker than those of steel counterparts, and they are more resistant to corrosion. Another criterion worth paying attention to is that a device that does not depend on electricity cannot be with a closed combustion chamber. Turbocharged models do not work without electricity, as they need forced circulation of the coolant, air injection and exhaust gas removal.

Non-volatile or volatile - which is better?

In volatile models, unlike their non-volatile competitors, there are:

1. Circulation pump to ensure the movement of the coolant. This eliminates air congestion and uneven heating of the premises.
2. Fan for forcing outdoor air into the chamber of turbocharged boilers.
3. More advanced automation that selects the most economical modes for the device. It is possible to program the operation taking into account the time of day and days of the week. The operation of the boiler is controlled by internal thermostats located in the rooms.

Thanks to circulation and forced draft, less stringent requirements apply to energy-dependent versions:

• there are no strict requirements for room ventilation;
• you can use a closed expansion tank, placement is free;
• do not need to comply with slopes;
• It is allowed to use pipes of small diameter.

Can a volatile heater work without electricity? No, during a power outage, the device does not work, and the house remains without heat. This is the only downside. There is a solution, but it requires additional costs - connecting a generator. It turns out that volatile models are more perfect and convenient to use, and if there is a reliable power supply, then the choice would be unambiguous. Non-volatile analogues are indispensable in situations where uninterrupted and high-quality power supply cannot be provided.

Manufacturer's choice

Having decided on the type of boiler - single or double-circuit, wall-mounted or floor-standing, it remains to choose a brand. The reliability rating is predictably headed by German manufacturers, whose products have only one drawback - too high prices. That is why consumers often pay attention to cheaper Italian brands - and others. But the most popular, according to sales statistics, are domestic devices on the market - Rostovgazoapparat, Mimax KSG, Siberia KCHGO, Volk, Borinsky AOGV, AOGV and AKGV, Premium, ROSS AOGV. Also, products manufactured by Ukrainian factories have proven themselves well; Atem Zhytomyr is especially popular in Russia.

Model overview

Protherm Medved TLO

Floor single-circuit devices with an open fire chamber. Completely energy independent. Power range - 18–45 kW. Technical characteristics and design features of "Proterm Medved" 20 TLO:

• power - 18 kW;
• heating temperature (min / max) - 45–85 ° С;
• dimensions (HxWxD) - 880x420x671 mm
• weight - 92 kg;
• maximum gas consumption - 1.9 m³ / h;
• heats an area up to 135 m²;
• piezo ignition;
• cast iron heat exchanger with condensate protection;
• single-stage power adjustment;
• modes "Winter" and "Summer";
• switching to liquefied gas is possible;
• automatic microprocessor control;
• Efficiency - 90%.

There is a built-in water heater. Reliable security system: there is protection against gas pressure drop, water overheating and flame extinction. It is compact, has a stylish design, will look good in the kitchen. Estimated cost - 55 000 rubles.

Baxi SLIM EF

Double-circuit floor version from the Baksi brand. Differs in stylish design - the gray case and the black adjusting panel. The burner is atmospheric. The heater device has a high sensitivity thermocouple, which promptly stops the gas supply when the flame goes out. They are connected to systems with natural circulation of the coolant. Their maximum power is 61 kW. Estimated price - 45 000 rubles. For example - BAXI SLIM EF 1.22:

• power - 22 kW;
• maximum temperature - 95 °C;
• dimensions (HxWxD) - 850x400x595 mm;
• weight - 101 kg;
• maximum fuel consumption - 2.64 m³ / h;
• heating area - 176 m².

Protherm Cheetah 23 MOV

Wall-mounted versions that work without an electrical connection are much more modest on the market. "Gepard" 23 MOV from the brand "Proterm" has two circuits. With a weight of 31 kg, it is easily fixed to the wall. Draft - natural, smoke removal - through a conventional chimney. The approximate cost is 33,000 rubles. Characteristics and design features:

• 23.3 kW;
• maximum gas consumption - 2.73 m³ / h;
• Efficiency - 90.3%;
• heats an area up to 230 m²;
• primary heat exchanger - monothermal;
• steel plate type heat exchanger for hot water supply;
• switching to liquefied gas.

Viadrus G36

Products of the Czech manufacturer. A steel atmospheric burner was supplied. In order for the gas valve to function smoothly, there is a built-in thermocouple capable of generating electricity in the right amount. There is also a sensor that prevents tipping of the thrust. Adapted to local conditions. You can connect a pump to increase the pressure of the coolant, and if there is a danger of power outages, an uninterruptible power supply is connected. You can also connect an indirect heating boiler. The price is about 52,000 rubles. Characteristics Viadrus G36 BM 3:

• 17 kW;
• heating - 45–85 °С;
• one circuit;
• Efficiency - 92%;
• heating - 128 m²;
• maximum gas consumption - 1.98 m³ / h;
• weight - 100 kg;
• dimensions - 935x485x733 mm.

Mounting Features

Gas heaters that do not consume electricity operate in conventional gravity heating systems, which have a lot of disadvantages. The main ones are insufficient temperature stability in the premises and high fuel consumption. That's the price for offline work. Since there is no forced circulation, such boilers are located at the lowest points of heated buildings so that water flows to the place of heating.

The heating circuit, independent of electricity, has a special wiring. The pipes must be of a larger diameter than in the case of circulation pumps. The location of the pipes - with a slope. It is necessary to strive for the optimal number of branches and turns so that the coolant pressure does not decrease below normal. An expansion tank is required: its absence can provoke a pipe rupture.

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

They almost do not need constant attention, are able to maintain a constant temperature, have protection against possible problems - overheating, flame extinction, and 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 operating mode dependent on the mass of 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 increase and stabilize thrust. This makes the mode of operation more intense and even.

Pros and cons

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;
• the cost of the boiler and repair work is much 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. They are installed in a hinged way on load-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-story 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. BUT 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 parameters:

• 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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