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We choose non-volatile boilers. Gas boiler without electricity Gas boiler with electricity

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 room temperature. These devices are used in gravity heating systems, where the coolant circulates through pipes under the influence of gravity and thermal expansion of water. Equipment manufacturers offer single- and double-circuit versions of such devices.

Operating principle of the boiler

The equipment does not require connection to a power source. Structurally, it contains a thermogenerator. When gas is supplied to the combustion chamber using piezo ignition (triggered by pressing a button), the pilot burner ignites. It burns constantly, providing ignition of the main heat source if necessary. It, 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 fireplace. By 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 operate without electricity is not the only advantage of the device. The design of its chimney also ensures the safe operation of such equipment. The channels provide installation of sensors that determine the level of traction. If it decreases or if reverse flow occurs, the gas supply to the combustion chamber automatically stops.

Design and operational features provide other advantages of such boilers:

  • automatic flame intensity control;
  • presence of piezo ignition;
  • long service life of the heat exchanger;
  • maintaining functionality even 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 installed in accordance with the requirements that ensure natural circulation of the coolant.

These include:

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

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 ventilation and exhaust gas removal systems.

Important! If the requirements and norms of state standards are violated, carbon monoxide may accumulate in the room. This is dangerous not only for health, but also for the lives of all family members.

Involving persons who are not authorized for this type of work in the installation of the system is strictly prohibited. All work is carried out by specialists who have passed the appropriate accreditation.

Boiler model options

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


 Floor standing gas boiler

Install energy-independent floor-standing boilers in a separate room, where good supply ventilation can be easily arranged. The open combustion chamber takes air from the room, and exhaust gases are discharged through the chimney.

If it is not possible to allocate a separate room or build a furnace room, then you should purchase a wall-mounted analogue. Relatively recently, suppliers began to offer energy-independent gas wall-mounted boilers. They do not take up much space, can be equipped with coaxial chimneys and have all the advantages of floor-standing analogues.

Modern models no longer require a gravity heating system. They are great even for hidden heating mains. In this case, a circulation pump should 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 loading of the heating device 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 install 2 taps at the inlet and outlet of the bypass, and also install a tap on the main line (it is closed in the 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 options for gas boilers can be an excellent 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.

Choosing a gas boiler without certain knowledge about these units is difficult. There is always a risk of purchasing a device that does not meet the requirements. You have to rely on specialists. But there are risks here too - recently too many “professionals” have divorced, imagining themselves to be true gurus, but lacking experience and knowledge. In this review, we will tell you how to choose non-volatile gas boilers, and at the same time we will tell you about the most popular models - they can be bought in domestic online stores.

Features of non-volatile boilers

Heating boilers are divided into two large categories - volatile and non-volatile. The first has many advantages:

  • More accurate temperature maintenance.
  • More service functions.
  • Possibility of working according to the program.
  • High level of security.

There are also disadvantages - they create additional electricity costs, have too fragile electronic filling, and do not work in the absence of electricity.

It would seem that having a modern double-circuit boiler in your home is cool and convenient. But behind the convenience lies the need to have an auxiliary source of electricity. Such sources are generators and uninterruptible power supplies on batteries. In any case, the consumer will face additional costs for fuel and batteries.

Non-volatile heating boilers can operate without electricity. They use mechanical control systems that control the temperature of the coolant and the operation of all components. Their efficiency indicator may be lower than that of electronic models, but there are also quite energy-efficient models (such distortions are observed in all lines of heating equipment).

Advantages of non-volatile gas boilers:

  • No dependence on power sources - if the lights go out in the house, the heating will continue to work.
  • A simpler internal structure - without flimsy electronics that are not resistant to power surges.
  • They can work for both heating and hot water supply - double-circuit gas boilers are available for sale.
  • Possibility of working in houses without electrification - for example, in rural areas or in the outback.

Many well-known brands are engaged in the production of non-volatile models - Protherm, Lemax, Baxi, MORA-TOP, Atem, Electrolux and many others. Both floor-mounted and wall-mounted models are available, including gas boilers with cast iron heat exchangers.

Energy-independent wall-mounted double-circuit gas boilers are rarely found on sale - most often their floor-standing analogues are presented on display cases.

Popular models

A gas boiler without electricity is a smart choice for those who don’t want to deal with electronics. The formula “no light - no heating” is unacceptable for many consumers, so non-volatile heating equipment was developed for them. Let's look at the most popular and rated models.

Before us is a rather powerful floor-standing sample. Its power is 35 kW, which corresponds to up to 350 sq. m of heated area. This is a non-volatile single-circuit boiler with a durable cast-iron heat exchanger, designed to work with natural gas. Its efficiency is up to 92%, maximum flow rate is up to 3.9 cubic meters. m/hour. The coolant temperature in the circuit warms up to +85 degrees.

The gas boiler does not require a connection to electricity and has extremely simple controls - a thermometer with a pressure gauge is visible on its panel, as well as a knob for adjusting the heating level of the coolant. According to user reviews, the device is stable and does not require any control. The model does not emit unpleasant odors, can operate at reduced pressure, and ensures rapid achievement of the required air temperature in heated rooms.

This non-volatile boiler was created by the industry leader - Protherm. It is designed for floor installation, the thermal power is 16 kW. The device can only operate on one type of gas fuel - natural gas. The heated area is up to 160 square meters. m, the maximum temperature in the heating circuit is up to +80 degrees. The system pressure should not exceed 1 bar.

  • Completely non-volatile operating scheme.
  • Two-pass steel heat exchanger – responsible for efficiency (up to 92.5%).
  • Gas failure protection.
  • Overheat protection.
  • The pressure in the gas line is up to 14 mbar.

The weight of the device is 46.5 kg.

This single-circuit, floor-standing, non-volatile unit is not a boiler or a rocket - it is a gas boiler from a domestic developer. With a power of 11.6 kW, it can heat an area of ​​up to 110 square meters. m. Thanks to its elongated shape, it is compact and suitable for installation in small boiler rooms. A small city house or a country house building is the main area of ​​application of this unit.

The main feature of this non-volatile boiler is that it can operate on two types of gas fuel - natural and liquefied gas. In the latter case, reconfiguration related to the installation of jets will be required. Natural gas consumption is up to 1.3 cubic meters. m/hour, liquefied – up to 0.86 kg/hour. The coolant temperature in the circuit can reach +90 degrees.

Despite the Russian origin of the gas boiler, it is built on the basis of Italian Eurosit automatic equipment.

A solid non-volatile boiler from a well-known brand. It features a modern case design and good technical characteristics. The gas boiler is built according to a single-circuit design with a cast iron heat exchanger. It can run on natural gas with a consumption of up to 3.68 cubic meters. m/hour and on liquefied gas up to 2.69 cubic meters. m/hour. The model turned out to be durable; it remains operational when the pressure in the circuit increases to 4 bar.

The cast iron heat exchanger of the non-volatile gas boiler from Baxi is resistant to thermal overload and corrosion. It provides rapid heating of the coolant, and its solid heat capacity prevents its rapid cooling. The model is reliably protected from overheating, equipped with gas extinction protection and a safety valve. Its inflated price is a little confusing - on average about 50 thousand rubles. But this is Baxi - one of the most reliable brands in the world.

Before us is a non-volatile boiler, created according to a double-circuit scheme. It provides not only heat, but also hot water. The device does not require an electrical network or a traditional chimney - combustion products are removed through a coaxial chimney that extends directly beyond the wall. The automation on board is mechanical, non-volatile, and has a high level of reliability. The thermal power of the device is 10 kW, the heated area is up to 100 sq. m.

The DHW circuit in the non-volatile boiler turned out to be not the most productive - up to 3.8 l/min at ∆t=35 degrees. The pressure in the shower may be weak, but you will still be able to take hygiene procedures. The primary heat exchanger in the device is made of durable steel, the secondary one is made of high-quality copper. This combination provides good corrosion resistance. The type of heating boiler is parapet, with a coaxial chimney outlet behind the wall. The ignition here is non-volatile, with batteries.

The presented gas boiler is very similar to those models that were produced back in the days of the Soviet Union. It is made in a round body, standing on three metal legs. The look is not the most modern - it is inherited from old times. The chimney is connected through the upper central part. The operating scheme is non-volatile, with two circuits for heating and hot water. The affordable price is also pleasing, amounting to about 17 thousand rubles.

The productivity of the hot water supply circuit is low - up to 3.5 l/min, this is enough for only one consumer. Natural gas consumption does not exceed 1.76 cubic meters. m/hour, liquefied gas – 1.21 kg/hour. The maximum heated area, according to the manufacturer, is up to 200 square meters. m. This looks extremely strange, since the indicator does not correspond to the power of the unit and the requirements for a small margin (usually 10-20% is left).

At first glance, it may seem that this is a floor-standing water dispenser. But in fact, this is a double-circuit floor-standing energy-independent gas boiler, built according to an energy-independent scheme. It is equipped with an open combustion chamber and a steel primary heat exchanger. The secondary heat exchanger that prepares hot water is made of copper. With a unit power of 10 kW, the productivity of the DHW circuit is 4.1 l/min. The heated area is up to 100 square meters. m.

Other features of the gas boiler:

  • Simplest controls.
  • Overheat protection.
  • Gas control system (prevents gas leakage when the burner goes out);
  • Efficiency – up to 90%.
  • Mechanical non-volatile control.
  • Natural gas consumption – up to 1.11 cubic meters. m/hour.

An excellent model for a country house or cottage.

Video

Can a gas boiler work without electricity?? This question often arises among owners of private houses, who constantly have to deal with significant bills related to paying for electricity, because in addition to household appliances and light sources, sometimes you have to pay not as little for an electric boiler as you would like. Therefore, it is advisable to become familiar with the operating features of such an installation as a gas non-volatile boiler.

A gas boiler without electricity is presented in the form of a classic model of a floor-standing appliance, the operation of which is possible without the use of additional power sources. The main purpose of such an installation is to heat water in buildings where power outages can be encountered quite often. For example, residents of rural areas or dense areas often suffer from a constant lack of light. In addition, technological progress does not stand still, and many manufacturers produce double-circuit boilers, and in such installations the gas consumption is significantly reduced, and heating adjustment is also possible.

Since a gas boiler without electricity is quite in demand these days due to its high quality and efficiency, many manufacturers are engaged in the manufacture of various models of such installations. The latest innovations from manufacturers are wall-mounted boilers, which fit well into the required heating circulation based on the convection principle.

In simple words, a wall-mounted gas boiler without electricity works according to the following scheme: after heating, water rises up to the pipe, from where it enters the system. To ensure constant uninterrupted circulation, the pipes leading to the installation should be installed at the desired angle, and their diameter should correspond to the average values. It is also worth paying attention to the installation position; the boiler is usually placed at the lowest point of the heating structure.

Some owners of private plots prefer to enhance the efficiency of a gas energy-independent boiler by connecting a special pump, which in turn operates using power. Thus, it is possible to pump the coolant, which enhances the operation of the gas boiler.

Important! When the pump is turned off, the energy-independent installation operates in independent mode.

Design features of a non-volatile installation

Gas boilers of this type are distinguished by the following equipment:

  1. A pair of gas burners, pilot and main purpose;
  2. Open combustion chamber;
  3. A system that ensures automatic operation of the device;
  4. Thermal sensors to ensure installation safety, backdraft valve;
  5. Heat exchanger.
Important! Features of the non-volatile gas boiler system include the operation of an open, expanded tank, due to which the liquid expands when the coolant is heated. This process ensures the circulation of the coolant. The expansion of water is accompanied by the formation of excess liquid, which goes to the tank itself.

Ignition of such an installation is provided by a piezoelectric element, which starts working a second after the button is turned on. Its purpose is to heat the pilot burner, which in turn ignites the main gas burner. Thus, a heat exchanger is activated, which is responsible for maintaining the required water temperature. Over time, the gas supply stops, the heat exchanger parts cool down, therefore, all stages are repeated.

Pros and cons of using independent boilers

The main advantage that all floor-standing gas boilers without electricity have is their ability to operate regardless of the electrical network. In addition, the installation does not require additional wiring into the room and sockets, which allows significant savings.

The advantages of using such an installation also include the ease and safety of using this element of the heating system. The simple type of boiler is ideal for providing heat transfer in a small house or large private building.

In addition, such gas heating boilers operate silently, especially when installing such a type of device as a double-circuit gas boiler without electricity, since its design eliminates pumps that create annoying noise. At the same time, this type of heating system element is particularly reliable and durable. Such criteria are ensured thanks to the experience of manufacturers who, over many years of production, have brought the installation to an ideal condition. At the same time, you should pay attention to the high efficiency indicators of boilers. A double-circuit boiler can not only provide the required temperature in the required building, but also take care of the supply of hot water.

The heat exchangers of such installations have a long service life.

Negative aspects of gas boilers operating without electricity:

  1. Installation of this type of boiler is possible only in houses with good draft in the chimney, on which the quality and safety of the operation of the entire heating system with such an element will depend.

  • If sufficient draft is neglected, constant fire extinguishing may occur, provoked by the triggered backdraft valve.
  • The operation of such an installation does not always meet the required level. For example, if you select the wrong diameter pipes leading to the boiler, you can install the device incorrectly, which will negatively affect its operation.

    • Operating principle of the boiler

    Due to the lack of access to energy supply, two-chamber boilers are equipped with special thermogenerators, which are responsible for the state of the burner by stopping the gas supply to it. This process is ensured by the influence of the coolant on the regulator. The automatic system provided in the boiler restarts access to gas as soon as the coolant has completely cooled down. Ignition for this purpose is provided by the operation of a piezoelectric element, the task of which is to ignite the pilot burner. if necessary, the piezoelectric element starts ignition of the main element, which in turn is responsible for heating the liquid in the entire heating system.

    Determination of types of energy-independent gas boilers

    Basically, gas non-volatile boilers are classified into the following types:

    1. single-circuit gas boilers without electricity - designed to operate exclusively as an element of the heating system;
    2. double-circuit - installations capable of providing not only heat supply to the heating system, but also water heating.

    Determining the appropriate model for an installation such as a gas boiler without electricity

    The main guideline for determining the appropriate model of such an installation as an autonomous gas boiler without electricity is the correspondence of its heating power to the required area, and this characteristic must also correspond to the load on the installation. The double-circuit type of boiler, manufactured mainly by foreign companies, is often determined more serious price category. This is explained by the increased quality, design and more advanced functionality of the device compared to domestic analogues. At the same time, the manufacturer of the gas installation should be determined with special diligence; it is especially worth considering the presence of service centers of the represented company in the city or nearby, because the device requires maintenance and sometimes repair.

    The most popular and high-quality manufacturers of gas autonomous boilers include the following companies: Italian manufacturers Alphatherm and Beretta - Italy, Slovenian company Attack, Czech-made Protherm and Swiss-made Electrolux.

    Although models from domestic manufacturers are more attractive in terms of price, their reliability does not always correspond to the level of foreign analogues. Although they have their own special advantage - the models are produced according to all parameters corresponding to the use of boilers under local temperature conditions.

    It is better to give preference to a gas boiler with heat exchangers for the manufacture of which cast iron or steel was used, and special attention should be paid to the first version of the material
    . Such preferences can easily be explained by the impressive service life of the cast iron element, because a coolant of this type can last up to three decades, while a steel part will last no more than twenty years. In addition, cast iron coolant has high strength characteristics, since walls made of cast iron will be much thicker than those of steel, and practice shows that such a device will last much longer and more efficiently.

    In addition, after many years of using a gas boiler, the heat exchanger tends to corrode. At the same time, cast iron is more advantageous than steel. Corrosion on this element of the device can occur as a result of a drop in temperature, which leads to the formation of condensation. Corrosion processes in such cases are provoked by released moisture.

    In addition, the design of the heat exchanger provides for the presence of sections. If one of them is unsuitable, it is not advisable to change the entire heat exchanger; replacement is sufficient. At these production stages, all sorts of impurities are added to the cast iron, which significantly increase the strength characteristics of the boiler as a whole, which provides it with additional safety during transportation.

    Imagine this situation: it’s bitterly cold outside, 30 degrees, a gas boiler is installed in the house, which requires electricity, and at this time a serious accident occurs on the power line. Of course, if power outages are short-lived, then UPS (uninterruptible power supplies) or generators save the situation.

    But the battery will run out if there is no power supply for a long time, and the generator requires a significant amount of fuel. What to do in this case? The problem can be easily solved. A non-volatile gas boiler is installed and a heating circuit is created in which the coolant moves under the influence of gravitational forces, i.e. by gravity.

    A logical question arises - how is safety ensured and how does the automation work if such a gas boiler is installed in the house without electricity? Developers and designers have created automation that is completely energy independent and is a mechanical device that responds to changes in coolant temperature. Most imported and domestic boilers have Italian non-volatile automatic equipment 630 EUROSIT installed. If precise temperature setting is required, then in boilers with a power of up to 35 kW, a multifunctional gas valve 710 MINISIT made in Italy is installed.

    If the burner blows out or the gas supply stops, electromechanical protection is provided. You can find out what to do if the gas boiler is blown out by the wind. To turn on a non-volatile gas heating boiler after lighting the igniter, you need to hold the control knob for several seconds. At this moment, the thermocouple heats up, which creates an EMF of sufficient magnitude to trigger the solenoid valve. As soon as the thermocouple cools down due to a loss of gas supply or other reasons, the valve will close completely.

    Types of non-volatile gas boilers

    The vast majority of boilers of this type are floor-standing. If the boiler is non-volatile, then it is quite logical to assume that the heating circuit should function independently of electricity. Only heating systems with natural circulation work this way, and for them the location of the boiler is important, because To create pressure you need to raise it as high as possible. In a natural circulation circuit, you can also install an energy-independent double-circuit gas boiler, which will provide the home with hot water.

    In design, a floor-standing, non-volatile gas boiler is not much different from a conventional one; it has the same two burners - the ignition and the main, usually an open combustion chamber for good draft, a combustion product exhaust system (chimney or coaxial outlet) and an automation system that does not require electricity. A characteristic difference is the presence of a button for ignition using a piezoelectric element.

    Floor-standing gas boilers can be single-circuit or double-circuit.

    Gas boiler PROTHERM

    An example is the energy-independent gas boiler Protherm, which is produced by the famous European company PROTHERM from the Czech Republic. It has been part of the German concern Vaillant Group since 2001. The Proterm Medved TLO model line is floor-standing, energy-independent gas boilers with a cast iron heat exchanger. Four models are available with powers ranging from 17 to 44 kW.

    Main characteristics of PROTHERM boilers:

    You can order or buy a non-volatile floor-standing gas boiler at any specialized store, but first you should calculate the required power of the boiler and select a suitable modification. In the PROTHERM series, Bear KLZ is the only gas-fired, dual-circuit, floor-standing, energy-independent boiler with a two-inlet cast iron heat exchanger with a built-in boiler. Power range from 18 to 49 kW in four modifications. The kit includes two expansion tanks for hot water supply and heating.

    Floor-standing gas boilers of the Zhukovsky plant

    Zhukovsky Mechanical Plant (ZhMZ) produces popular energy-independent floor-standing gas boilers with a power of 11.6 kW, which provide heating of 110 m2, and a model with a rated power of 29 kW will easily heat a home of 250 m2.

    Floor-standing single-circuit gas boilers AOGV are manufactured in three main modifications:


    It is important that you can buy a non-volatile floor-standing gas boiler for little money, and in return you will get a reliable heating unit that is practical and durable.

    Non-volatile wall-mounted boilers

    If a non-volatile wall-mounted gas boiler is installed in the heating circuit, then increased requirements for the installation of equipment should be taken into account. After all, it should ensure natural circulation of the coolant.

    Main functions of a wall-mounted gas boiler:

    In terms of their dimensions and weight, wall-mounted, non-volatile, double-circuit gas boilers are quite compact and lightweight, so their power does not exceed 35 kW. The performance of the second circuit - the DHW system - depends on the power of the boiler. Water for domestic needs is heated in wall-mounted boilers using a flow-through method.

    For normal operation, you need to ensure good draft in the chimney or coaxial outlet.

    In order for non-volatile gas heating boilers to operate correctly and efficiently, you need to clearly understand and follow some rules when installing the circuit and installing the boiler.

    The main requirements are as follows:

    Protherm Cheetah 23 MOV

    The range of mounted energy-independent boilers offered on the market is small. An example is the boiler of the famous European company Protherm Gepard 23 MOV. The boiler is double-circuit with a rated power of 23.3 kW, its efficiency is 90.3%, and the heating area is up to 230 m2. The unit weighs only 31 kg and is easily mounted on the wall of the room. The boiler is designed to operate on natural gas. You can learn more about Proterm Cheetah products.

    Ferroli Domina N F24

    The popular boiler, produced by the Italian company Ferroli Domina N F24, has a power of 23.5 kW, two circuits and a closed combustion chamber. It is installed on the wall and is capable of heating up to 180 m2 with an efficiency of 93%. The DHW system is quite productive at 13.6 l/min. Dimensions 700x400x230 with a weight of 30 kg.

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

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

    Many popular manufacturers produce different models of energy-independent 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 up and enters the system through the pipe. To ensure that the circulation does not stop, the pipes must be placed 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.

    A pump that is powered from the mains can be connected separately to such heating equipment. By connecting it to the heating system, it will pump coolant, thereby improving the operation of the boiler. And if you turn off the pump, the coolant will again begin to circulate by gravity.

    Boiler design without electricity

    The gas boiler, independent of electricity, has:

    • 2 gas burners – pilot and main;
    • Combustion chamber - in such devices it is open for better traction;
    • Automation;
    • Boiler safety system - temperature sensor, backdraft 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 promotes coolant circulation. But during expansion, excess is formed, which enters this tank.

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

    After some time, the gas does not flow and the burner goes out, after the heat exchanger has cooled down the process repeats.

    Advantages and disadvantages of independent boilers

    The main advantage of this gas boiler is the lack of connection to the electrical network. Since this is an additional saving and there is no need to connect an outlet.

    It should be noted that these devices are easy to use. And also system security. This type of boiler is the simplest. And it is suitable for heating both a small house and large rooms.

    Quiet operation of a dual-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 operation 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.

    Let us note the disadvantages of such a boiler:

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

    If you have an independent gas boiler, the heating system does not always work as desired. For example, if you install pipes of the wrong diameter or do not calculate their desired location. All 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, the double-circuit boiler has a thermogenerator that stops the gas supply to the burner. This occurs when the heat carrier is exposed to the regulator. The automation resumes the gas supply to the boiler when the coolant cools down to a certain temperature.

    Ignition occurs using a piezoelectric element, which ignites the ignition burner (it burns constantly) and, if necessary, the main heat source is ignited from it. It helps heat the liquid in the heating system.

    Types of independent gas boilers

    The following types of boilers operating without electricity can be distinguished:

    • single-circuit– apply only to the heating system;
    • double-circuit- These are devices that, in addition to heating, also provide hot water for household needs.
    Rice. 1

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

    Selecting an independent boiler model

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

    Double-circuit models from foreign manufacturing companies are often more expensive than domestic ones, as they are more advanced and have an attractive design. The manufacturer of the gas boiler must be chosen carefully; it is important to make sure that this company has a service center in the city or nearby. Since, if necessary, you can 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 we should pay tribute that such devices are already adapted to our weather conditions and the parameters under which they must operate.

    A gas boiler without electricity can be chosen 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 the design also means that the walls of such a heat exchanger are thicker. This prevents the walls of the heat exchanger from burning through. This device has been tested in practice.

    The heat exchanger may also be subject to corrosion. A cast iron appliance is much less susceptible to such damage than steel. Corrosion on the heat exchanger appears if the temperature drops to the point that condensation appears. And this very moisture leads to corrosion processes.

    Also, the cast iron heat exchanger, by its design, consists of sections. If necessary, you can change a section, not the entire device. Nowadays, impurities are added to the cast iron alloy, which make it even stronger. This means that it will not crack if transported incorrectly.

    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, and also ensure air flow there. Because due to the open combustion chamber, air is constantly “eaten up” by the boiler. Combustion products are discharged through the chimney.

    Rice. 3

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

    If necessary, you can install a circulation pump. Mount it via bypass. It is recommended to install taps near it: 1 at the entrance and 1 at the exit. A tap is placed separately on the main line, which must be closed when the pump is running. If such taps are available, if necessary, you can repair the pump without draining the water from the system. It is recommended to install a filter in front of the pump.

    There are certain conditions that must be maintained:

    • the boiler room must have a positive temperature;
    • fire safety. The walls in the boiler room must be equipped with non-flammable material. Typically, asbestos or metal sheets are used.
    • The first start-up of the boiler after installation should be carried out under the supervision of a specialist.

    A specialist should also check that the chimney is installed correctly. It is necessary that it corresponds to the power of a gas boiler without electricity and to the standards established by competent organizations. It is better to have a separate pipe for each heating device. According to the standard, the chimney should be straight; if it is impossible to make it this way, then there should be no more than 3 turns.

    The length of the chimney should be about 5 meters. The heating unit must be selected and installed in accordance with the pressure in the gas pipeline, usually it is 1.270 MPa. The documentation that comes with the device (passport) always indicates the acceptable limits of this indicator. Sometimes gas pressure readings decrease in winter. Knowing this feature of the region, you need to select a device without access to electricity accordingly.