Low power gas parapet boilers. The best parapet gas boilers. Installation of a parapet gas heating boiler

Not all owners have any idea what a parapet gas boiler is, although many have been using it for a long time. This is a non-volatile unit, without connection to the chimney of a house or apartment. A gas parapet boiler removes combustion products through a coaxial chimney passed through the wall of the building. The presence of a closed fuel (gas) combustion chamber makes it possible to install such units in small rooms, since oxygen is not taken from the room for the gas combustion process.

Advantages and features of parapet units

The main advantage of the equipment is its compactness: a parapet boiler running on gas can easily fit in the kitchen under a window sill or in any other room, since during operation it does not consume oxygen from the room and does not pose a danger to residents. A coaxial chimney is a reliable and secure system smoke removal, which also suggests making a choice in favor of such equipment.

The correct choice of product should be based on the following parameters (except for consumer reviews and catalogs from selling companies):

1. Installation technology: the parapet boiler is made for mounting on walls and floors; there are also left- and right-hand models;
2. A gas parapet boiler can be equipped with one or two circuits. One circuit is for heating only, the second circuit is for domestic hot water;
3. Also, parapet boilers can be energy-dependent (with an automatic monitoring, adjustment and control system) and non-volatile (with or without manual adjustment).

The thermal power possessed by parapet boilers varies between 15 kW-40 kW for a unit with one circuit. If you choose to install parapet equipment with two water heating circuits, then the capacity for heating water for domestic needs should also be added to the rated power. For example, parapet boilers with a power of 12 kW -15 kW easily heat the volume of water up to 180 l/h, which, according to the standards, is four water points (faucets, toilets, faucets, showers, etc.).

1. The single-circuit unit has a standard heat exchanger (jacket) of a plate design, which speeds up the process of heat exchange between the gas burner and the working fluid of the heating system. The material of the shirt is thick 3 mm steel.
2. Dual-circuit gas boilers parapet ones contain, in addition to the heat exchanger, a copper or brass coil for hot water supply, in which water is heated only by the flow method. If you increase the productivity of the hot water supply due to an additional hot water tank, then such a boiler will no longer be able to be installed in the kitchen.

Also, in addition to wall-mounted and floor-mounted models, there are products with differences in installation: with left-side connection of the gas pipe, hot water supply and heating circuit, and with right-side connection. This convenience should not be overlooked when choosing a boiler for an apartment or house. The dimensions of the unit are determined by its performance and the number of water heating circuits. For example, if a boiler has one circuit, then its dimensions will be smaller than that of a double-circuit one.

Parapet equipment installation

The body of the unit is painted with powder fireproof anti-corrosion paint, which, for working conditions in the kitchen, protects against the effects of high humidity and rusting of the metal. The thick 3-mm casing (not a casing, but the casing of the working unit) is resistant to mechanical stress.

The equipment is simple but effective:

1. Thick-walled metal case;
2. Closed combustion chamber;
3. Gas burner and ignition;
4. Chimney of coaxial type;
5. Metal jacket (heat exchanger), if there is a second circuit - a copper or brass coil.

Automatic monitoring and control group:

1. Thermometer;
2. Thermocouple (temperature sensor);
3. Air draft sensor.

Self-installation parapet equipment is impossible - this must be done by representatives of the gas service after the owner has received the appropriate permits. The unit can be installed anywhere. The main thing is that the boiler should be located next to the wall - this way the coaxial chimney will be short and safer. The main advantage of parapet gas boilers is a closed combustion chamber and a coaxial chimney pipe, which can be installed anywhere in the room. These two components allow the boiler to be installed anywhere in the room, without fear for the safety and health of the residents, since neither the sealed closed combustion chamber nor the autonomous chimney allows toxic gases to enter the atmosphere of residential premises.

The chimney pipe of a coaxial device is a metal structure made of two pipes of different diameters. A pipe of smaller diameter is inserted into a pipe of larger diameter, and the free space between them serves to draw air into the combustion chamber. Combustion products are discharged out through a pipe with a smaller diameter.

Self-installation of parapet gas boiler with your own hands is strictly prohibited. Engage in installation and commissioning work gas equipment must be licensed professionals, and only employees of the regional gas service have the right to connect a parapet gas boiler to the gas main.

The process of installing gas parapet equipment is similar to installing a gas convector: the smoke removal system of a coaxial chimney is led through the wall of a house or apartment to the street, and the end of the pipe must be protected with a windproof cap to prevent the gust strong wind did not extinguish the wick. Then the gas, heating and hot water circuit pipes are installed in the same way.

How does a boiler work?

The non-volatile gas boiler is equipped with piezoelectric ignition - for this there is a special button on its body. The wick lights up and ignites the gas burner.

When an automation system is installed in the equipment, the boiler is ignited automatically, depending on the sensor readings. More reliable, versatile and easy to operate are energy-independent models of gas parapet boilers, which is why they are more popular in the domestic market.

Parapet gas equipment operates using a simple and understandable technology: the gas burner of the boiler is ignited from the wick and heats the heat exchanger, through which, using circulation pump or natural current moves the working fluid. The gas will burn until the water temperature in the heating system reaches the level set by manual or automatic regulators, after which the gas is automatically turned off by closing the gas valve at the inlet to the boiler. The wick is working at this time and is ready to re-ignite the burner at any time as soon as the water temperature in the system drops below the specified parameters and a command to heat up is received.

The gas boiler safety group consists of the following components and elements:

1. Thermocouple, which is installed directly in the burner flame;
2. The traction control sensor is installed at the combustion chamber outlet;
3. Temperature sensor and thermometer.

What is a thermocouple used for: under the influence of heat from the burner flame, it generates a small voltage that controls the position of the gas valve. If combustion in the chamber stops, the voltage in the thermocouple disappears and the valve automatically closes, cutting off the flow of gas into the boiler.

In the absence of air draft in the boiler, the heat exchanger quickly heats up to +65°C and above. The signal from the heat exchanger plate is sent to the gas supply valve, it closes and combustion ends. This is how the safety group of a non-volatile boiler works. If the boiler is connected to the electrical network, then all processes are controlled by a control and automation system.

A thermometer paired with a temperature sensor (thermostat) serves to protect the parapet boiler from elevated temperatures. The mechanism works like this: when the thermometer detects a critically high temperature of the working fluid in the system, it sends a command to the thermostat, which closes the gas supply to the boiler burner.

Wall-mounted parapet gas equipment is in even greater demand than conventional floor standing boilers with a chimney installed in the building due to its versatility and undemanding operating parameters. For example, conventional wall-mounted units react sensitively to changes in gas pressure in the line; because of this, scale appears on the boiler jacket more often; in addition, such units require an uninterrupted supply of electricity.

Parapet gas boilers are less sensitive to pressure changes in gas supply pipes, and non-volatile equipment does not require connection to the electrical network at all. The coaxial type chimney is undemanding in terms of installation conditions: it can be installed both horizontally and vertically, which gives scope for a more convenient location of the boiler in small rooms.

Problems and solutions with parapet gas equipment

Despite all the safety measures provided and control over the operation of gas equipment, parapet units can create problems:

1. The closed combustion chamber is made of two elements connected to each other polymer materials. If the maintenance schedule is not followed, the polymer layer may begin to deteriorate. , which will lead to the leakage of toxic combustion products into residential premises;
2. The material of coaxial chimney pipes in cheap models of parapet units can be made of black steel, which quickly burns out. Remember one mandatory GOST requirement: in all models of gas parapet boilers, the coaxial chimney must be made only of stainless steel. If the pipes are made of ordinary steel, then soot and condensation quickly accumulate on them, air draft slows down, corrosion eats away at the metal, and all toxins can easily enter the room. In addition, carbon monoxide from the chimney, entering the combustion chamber through the cracks of the chimney, can extinguish the burner or reduce its burning power;
3. With the walls of a coaxial chimney damaged by corrosion, the danger of the flame being blown out by gusts of wind increases significantly, which means that the gas in its pure form will leak into the living quarters. This means only one thing - wind protection of the chimney is mandatory, as is checking the material from which the parapet pipe is made.

The requirements governing the connection of gas equipment are so high that in some cases, installation is impossible for a number of reasons. A parapet gas boiler has an operating principle that is different from its classic counterparts. Changes in the internal structure somewhat reduce the connection requirements, which makes installation possible even in apartments of multi-storey buildings.

Installation of a parapet gas heating boiler

The internal structure and operation of a parapet boiler are in many ways similar to what is used in units of a classical design. But there are differences that make it possible to widely use the equipment.

How does a parapet boiler differ from a chimney boiler?

• Lack of a classic chimney pipe. In classic boilers, air is taken directly from the room. After burning the gas, the combustion products go into the vertical chimney under the influence of natural draft. In parapet equipment, air intake and combustion products are removed using a chimney pipe.
• The special design of the combustion chamber - a steel heat exchanger, two burners, a DHW coil, are enclosed in a sealed chamber connected to a coaxial chimney. Air is taken in along the outer contour of the chimney pipe, after which it enters the burner from below. The heated air passes through a vertical heat exchanger and is discharged from the boiler body through the core of the coaxial pipe.

The normal volume of gas consumption for a 10 kW parapet boiler will be about 1 m³/hour. A double-circuit unit will consume approximately 15-20% more fuel required to heat the hot water supply.

Which parapet boiler is better to choose?

• Productivity - average power indicators, calculated using the formula 1 kW = 10 m². This formula is suitable for well-insulated buildings in the middle regions of the Russian Federation with a ceiling height of no more than 2.7 m.
• Functionality - parapet single-circuit gas boiler, works only for heating. To connect DHW, you will need to install indirect heating, which will require additional financial costs. Double-circuit parapet gas boilers are convenient in this regard, as they have a built-in water heating function and a switch that allows you to switch the unit to summer or winter mode work.
• Manufacturer - rating of the most reliable boilers, top German manufacturers, Austrian and Czech models follow closely behind. Domestic parapet gas boilers, with a closed combustion chamber, have an attractive price and good thermal characteristics.

Models manufactured by factories located in neighboring countries are popular:

• Russian-made domestic gas parapet boilers:
  • Lemax;
  • Hephaestus;
  • Barsky Machine-Building Plant;
  • Helios;
  • Danko;
  • Conord;
  • HeatLine;
  • Taganrog Gas apparatus.
• Ukrainian gas heating boilers parapet type, for apartments and private houses:
  • Termomax;
  • ATON;
  • Atem;
  • Mimax;
  • Termotechnik;
  • Lighthouse;
  • Dani;
  • Proskurov;
  • ROSS;
  • Hearth.

How to install a parapet heating boiler

It is allowed to install parapet gas boilers in a private house or apartment in a multi-storey building. In this case, the premises must meet the minimum requirements specified in the above regulatory documents. During installation, you must strictly follow the installation procedure and rules.

Requirements for placement under a parapet boiler

• Parapet boilers up to 30 kW can be installed indoors with a total area of ​​up to 7.5-8 m². It is allowed to use the kitchen and utility rooms for needs.
• The minimum ceiling height is at least 2.2 m.
• Ventilation of the room - the boiler room must have working supply and exhaust ventilation. Doors are installed without thresholds. Opening windows are required.
• Lighting - for every 1 m³ of the boiler room, there must be at least 0.03 m² of window opening.
• Features of operation - maintenance of gas equipment is carried out at least once a year. Along with the operability of the boiler, the operation is checked supply and exhaust ventilation. A report is drawn up on the inspection performed.
• Commissioning of the boiler is possible only after inspection by a representative of the supervisory authorities, compliance with all requirements regarding the correct connection of gas equipment.

Chimney for parapet boiler

Correct connection to a horizontal chimney must meet several requirements:

1. The horizontal section should not exceed 3 m in total.
2. When passing floor slabs, a special block is used - cutting.
3. A condensate trap and wind protection are installed on the chimney head.
4. The chimney is installed at a slight slope from the boiler to prevent condensation from draining into the device.

How to protect a parapet boiler from the wind

If the rate of interruption is greater than once every several heating seasons, the source of the interruption will need to be eliminated.

The reasons why a gas parapet boiler may go out are the following:

• There is no wind protection on the chimney head. The factory-made casing already has a special insert that protects from gusts of wind. The protection can be made from any galvanized steel, attaching it to the casing with press washers or rivets.
• The settings are set incorrectly - in order to prevent the parapet boiler from blowing out, you will need to lower the permissible gas pressure at which the module will remain operational.
• Insufficient draft intensity - the gas duct is designed in such a way that the slightest disturbance in the draft characteristics will lead to the boiler shutting down. To eliminate problems, check the correctness of the chimney connection and correct any mistakes.

To prevent possible boiler shutdowns as a result of gusts of wind, it is better to entrust the installation of the unit to a qualified specialist licensed to carry out this work.

Natural gas today is the most convenient and widespread type of fuel for use in autonomous heating systems installed in private homes. If you compare this resource, for example, with coal, you do not need to worry about regular replenishment of reserves, you will only need to connect to the local gas pipeline. Therefore, individual heating systems today are mostly designed for the use of gas.

The need to use parapet boilers

Parapet boilers are one of the best options. They can even be used to heat a city apartment. Initially, such equipment was developed as an alternative to wall-mounted ones, which have many advantages, but are very demanding in terms of operating conditions. For stable functioning they need constant pressure, soft water, high quality gas, as well as uninterrupted power supply. For this reason, such devices often fail and require regular maintenance. Over time, they were replaced by parapet boilers. They do not require such stringent operating requirements and are able to provide stable operation heating system. The described installations are energy-dependent heating units, which are intended for installation in apartments and private houses, combining all positive characteristics convectors and gas boilers.

Connection features

They have a closed combustion chamber that does not communicate with the room. The equipment is installed without highlighting external environment combustion products. This is essential for oversized rooms that have a fairly weak ventilation system. For this reason, such equipment does not require the installation of a traditional chimney; only a side coaxial one, also called coaxial, will be sufficient. It is installed by first connecting two pipes that are located inside each other. To ensure the supply of fresh air to the combustion chamber, as well as the removal of combustion products to the outside, this element is required. Due to the fact that there are holes in the case, there is no need to install additional batteries in the rooms. One boiler will be enough to provide full heating. Parapet boilers are connected according to the same principle as is used in the case of convectors. This involves the use of pipes that are necessary to connect to the water supply and gas pipeline systems. This is true if the equipment is double-circuit; it is fixed to the wall surface using brackets.

The type has a small diameter and can be laid directly into external wall, on which the equipment itself is mounted. It is recommended to install the pipe next to the window, this way it will be easier to monitor its condition during the operation of the heating system.

Main advantages

If you decide to choose a Termotechnik parapet boiler for heating, you should first become familiar with its main positive features. Among them, we can highlight the fact that the equipment has a closed combustion chamber. For this reason, there is no need to install a full chimney. The boiler can be installed in any room in which one of the walls must be external. Full heating of the entire room is ensured by the presence of convection holes in the unit body. The use of additional radiators is not required for the reason that the boiler is both a battery and a furnace. The equipment can be installed in a city apartment; for this you only need electricity and a gas pipeline. If we are talking about an apartment, then the equipment is installed in the window sill, in the kitchen. As an alternative solution, you can install the boiler near the wall, but it will be necessary to create an external hole in it, which is necessary for the outlet of the coaxial chimney. An additional advantage is the fairly wide the lineup, which allows consumers to choose the most best option for a room of any size. During the purchasing process, it is important to pay attention to the power, which can vary from 15 to 40 kW.

Considering the Termotechnik parapet boiler, one cannot help but note that among its positive features is also its versatility. The model range is represented by options that can have one or two circuits. In the case of two circuits, the unit will be able to not only heat the room, but also provide water heating, which is true in the absence of hot water supply. If you decide to equip an individual heating system, then the Aton parapet gas boiler will be a relatively affordable solution, which makes such equipment profitable. The case has a modern design, which does not spoil the overall appearance of the interior if you decide to install the equipment in the right place.

Cons of parapet boilers

If you decide to purchase an Aton parapet gas boiler, then you should consider the disadvantages of this equipment. Among them, it is worth highlighting their low power, which indicates the possibility of using them in small areas. Home craftsmen especially note the disadvantage, which is the need for help from specialists in the installation of a coaxial pipe.

Types of parapet boilers

If you decide to purchase a floor-mounted parapet boiler, you should be aware that models may differ in terms of reliability, power, and efficiency. The equipment will have certain technical characteristics. When choosing a specific type of unit, you should be aware that reliability will depend on the thickness of the steel used in the design of the heat exchanger. Unfortunately, not all manufacturers indicate this parameter; when choosing equipment, you must find out this characteristic at the point of sale. This point plays a key role in the functioning of the parapet boiler. If you decide to choose a Thermo parapet boiler, then 3 mm is the best option. If there is thicker steel, the heat transfer process will be difficult, which will negatively affect the efficiency of heating the room. Not only the thickness of the steel matters, but also its quality. This parameter can be determined by the maximum pressure allowed by the manufacturer. At higher pressure levels, steel has high reliability and quality. If you paid attention to the “Thermobarrier” parapet boiler, then it is important to take into account the efficiency; this indicator is influenced by the design of the heat exchanger and efficiency. Experts advise determining efficiency by calculating the coefficient useful action. This parameter will accurately show the efficiency of the device and heat exchanger. Recently, almost all manufacturing companies have achieved the most acceptable level of efficiency, which can reach 92%. However, it is still recommended to clarify this parameter at the time of purchase, since in some cases a few percentage points can make a big difference. This indicator is the only one that can objectively reflect the efficiency of equipment, because different rooms may differ in the level of insulation. A fairly significant technical characteristic should include the size, as well as the location of the connectors for connection. When choosing a specific type of unit, the size must be selected individually, since the parameter will depend on the conditions and installation location. It is important to pay attention to the location of the connectors; many types of boiler equipment require both left and right options for connecting water and gas pipeline devices. You can also find universal models that can be connected from either side.

Types of equipment by power

The Ross parapet boiler can have different capacities. The quality of heating and the efficiency of using the unit will depend on the choice of the model with the most suitable power. This is due to the fact that if the power is higher than necessary, then electricity and gas will be wasted. Quite often it is recommended to use a formula that involves choosing equipment taking into account one kilowatt per 10 square meters. In fact, this calculation cannot be called correct, since the indicator is averaged. In practice it does not correspond to reality. When calculating, which provides for 1 kilowatt per 10 square meters, the difference between a house and an apartment is not taken into account. It is important to take into account the number of openings, ceiling height, wall material and other parameters that make up the level of thermal insulation. Experts recommend doubling this formula, using 2 kilowatts per 10 square meters. This will allow you to get a margin that takes into account possible drafts, high ceilings, thin walls and an excessive number of windows.

The Dani parapet boiler, like other models of similar equipment, is economical, low cost and easy to operate. It can perform the functions of a water heater and does not require the installation of an additional heating network, since it is a convector and a stove at the same time. Each master can easily connect such a unit independently, without resorting to the help of specialists. Double-circuit parapet boilers are modern, convenient heating devices that can be installed in any type of premises, for example, apartments or private houses, garages and outbuildings.

Additional information about the types of parapet boilers

If you decide to connect the parapet boiler yourself, then you need to pay attention to additional factors that indicate different types equipment. IN country house or apartment, you can use devices that differ in installation location, availability of automation, methods of removing coolant combustion products and cost. Depending on the installation site, the units can be floor- or wall-mounted. The latter are considered more popular, since their power most often does not exceed 30 kilowatts. Undoubtedly, devices that are designed for wall installation can be more powerful. However, here we are talking about a mini-boiler room, which combines several units according to the cascade principle. Floor-standing equipment is considered more powerful and allows heating buildings with an area of ​​several square kilometers.

Types of boilers by chimney type

The chimney of a parapet boiler can have forced or natural draft. The first option is a coaxial system, while the second consists of a traditional pipe that runs through the roof. You can often find references to turbocharged boilers. They are what we understand as wall-mounted parapet models, however, the combustion products in them are removed using special fans through a coaxial chimney. If the draft is natural, then the burner of the equipment is open, and air is supplied from the room. If so, air is sucked in from outside. Such boilers, as a rule, are used in conjunction with parapet devices, which improves environmental conditions in the room; the air is no longer burned, as it comes from outside. Chimneys can be vertical or horizontal, which expands the possibilities when choosing a place to install a heat generator.

Types of boilers by functionality

Parapet boilers can have one or two circuits, in the first case only the home is heated, in the second the house is provided with hot water. They are complemented flow heater, which are usually copper. This material has the best thermal conductivity. Such a unit can be connected to the system both on the right and on the left, or on both sides, thanks to which heating wiring is simplified. This appeals to the modern consumer, who is increasingly choosing parapet boilers.

Parapet boilers are chimneyless, energy-independent devices, which are used mostly in private houses, as well as apartments where the design does not provide for a traditional chimney. Basic distinctive feature The design of these parapet gas boilers is that they have a closed combustion chamber, which is isolated from the room where the gas boiler is located. In particular, the favorableness of this advantage can manifest itself precisely in small rooms from which air will not be drawn for better combustion.

The need for air intake for combustion, as well as the removal of combustion products in a parapet gas boiler, cannot be ignored, so everything is done using the external wall of the house, this requires the installation of a special horizontal coaxial chimney. (See also: Which gas boiler is the most economical?)

The chimney consists of only a pair of pipes, they are placed one inside the other. Using the external tube, air enters the chamber, and through the internal tube, combustion products are removed. As you can see, everything is quite easy and convenient.

Another advantage that parapet gas boilers have is that they have a lining of the hole for convection. This addition helps to ensure heating of the room in which the gas boiler is located, without installing a special heating radiator in it.

Important Features

Boilers are made as standard in a rectangular shape. This makes it possible to make their installation simpler and more convenient. Also, such boilers are left-handed or right-handed. Boilers that are left-handed have an automatic system located on the left side of the device, and the pipes that are required to connect to the heating system and hot water supply system are located on the right. The Helios gas boiler in the right version has all the same nuances, but only on the other side. (See also: Gas boilers)

Gas heating boilers related to the parapet type are produced in single-function and dual-function types. Dual-function boilers have a tubular instantaneous water heater, which is mounted in the boiler body and is required to heat water for a variety of household needs. The metal that is used to produce such heaters is mainly copper, as it has a fairly high thermal conductivity coefficient.

The Italian parapet gas boiler has one significant advantage: due to the fact that it does not need to be connected to the chimney, it can be installed anywhere. Parapet boilers are energy independent. In a residential building, parapet boilers are often installed in a window sill niche. They are also used to supply heat to buildings that have a water heating system with a forced natural circulation system.

Kerber gas boiler with a steel heat exchanger

Such boilers, which have a steel heat exchanger, do not require chimneys and can be installed in a private house, as well as in an apartment. The dimensions of the parapet boiler allow it to be mounted where it is convenient, including under the windowsill. The heating system can be connected both on the left and on the right, or on both sides at the same time. Also, this type of boiler can operate not only on natural gas, but also on liquefied gas. (See also: Sitemap)

Let us determine the technical design of a parapet boiler:

– Coaxial deflector with silicone seal, which ensures a tight connection with the heat exchanger;

– Turbulizers, which have a special design, increase the efficiency of transferred heat from combustion products to coolants and help ensure high level Efficiency, they are installed in pipes through which combustion products are discharged;

– A window with visual control over the combustion of the main and pilot burners;

– The hot water supply circuit is made in the form of water heater coils made of copper tubes with a diameter of 12 millimeters. It is intended to heat process water. Copper is an excellent conductor of heat, so water heats up much faster, saving time and resources. (See also: Room thermostat for a gas boiler)

Siberia and Renay boilers

Some companies may offer a series of improved parapet boilers with sealed combustion chambers and universal connection to the heating system. Siberia gas heating boilers have rectangular heat exchangers, which are a solid welded steel body three millimeters thick. Welds are made using semi-automatic welding machines, which makes it possible to obtain high-quality, homogeneous sluices. Each seam is external and easily accessible if repairs are required. Seamlessly stretched pipes are welded inside the body, through which combustion products pass. The housing is designed to work in a heating system that operates under a pressure of 0.3 MPa.

The Renai gas boiler is characterized by the fact that it operates safely and steadily both when the gas pressure in the main line fluctuates and during low pressure. Cylindrical micro-flare gas burners ensure uniform distribution of flame over the entire area of ​​the combustion chamber, which helps ensure rapid and uniform heating of water in the heat exchanger.

Offered range

As for the model range, it includes gas boilers with a power of 7, 10, 12.5 and 15.5 kilowatts with one circuit and with a water heating function. Parapet boilers can be used in houses and apartments in which the total heating area is up to 140 square kilometers, where there is no possibility of connecting to a chimney. (See also: Advantages and disadvantages of mounted gas boilers)

Parapet gas boilers are equipped with modern gas automatic systems, having piezoelectric ignition and micro-torch burners. The heat exchangers of parapet boilers are made of steel having a thickness of three millimeters.

A distinctive feature of parapet boiler models is a completely new design of heat exchangers, which makes it possible to get rid of left-hand and right-hand designs, which makes their installation much easier. The uniqueness of the connection lies in the fact that the pipes connecting the boiler to the heating system and hot water supply are located on both sides of the device, which makes it possible to eliminate the need for side doors, which helps save money. working space indoors, and parapet boilers will fit perfectly into the interior of any kitchen.

During the development of new models of parapet boilers, special attention is paid to what is being improved appearance devices. The main requirements are aesthetic modern design and convenient use. Ultimately, the new parapet boilers will receive a working panel on which there are devices for regulation and visual control, which is very convenient during use, as well as an original, elegant appearance, which helps to distinguish this series of boilers from other Russian analogues.

A little about the design

Parapet gas boilers take in air using a special horizontal pipe - coaxial, which passes through the outer wall of the house. Combustion products are removed through it. A coaxial chimney includes two pipes located inside each other. The inner one is designed to remove gas, and the outer one is for air to flow in.

By type, parapet gas boilers are divided into those that have two circuits and those with one circuit. In double-circuit units, an instantaneous water heater for the hot water supply system is included in the housing. Copper is often used as a material for heat exchangers due to the fact that it has a high thermal conductivity coefficient. Efficiency ranges around 92 percent.

Domestic parapet boilers have slightly worse characteristics than imported ones. But they may also have an electronic control system to automatically change the power and regulate the DHW system. Also, electronic control boards can protect the boiler from overheating or freezing, pump jamming or pressure drop in pipes.

What are the features?

A distinctive feature of these devices is the combustion chambers are closed and isolated from the room. Due to this, the air in them, which is used for breathing, is not consumed for gas combustion. This is especially true for small rooms. Another feature that is suitable for the living room, kitchen and hallway is that the boilers operate almost silently.

Among the advantages of this type of equipment, one can also highlight the fact that there is a hole for convection, due to which the room is heated without heating radiators. Among the disadvantages, the small power of such units can be highlighted, which can affect the maximum volume of space that is heated.

In conclusion, I would like to say that there are quite a lot of boiler models and therefore you should choose very carefully. Agree, the difference will be obvious among boilers of foreign and domestic production. It also all depends on the number of contours and much more. We wish you good luck in your choice!

What is a parapet gas boiler?

Parapet gas boilers

A heating system using a gas boiler is one of the most affordable and profitable. But not everyone has the opportunity to refuse centralized heating, even if its quality is unsatisfactory. This is due to the fact that a conventional stationary gas boiler requires a flue.

Such a structure is not present in all buildings, especially multi-story ones. Residents of private houses and cottages have long enjoyed all the benefits of heating gas boilers, and now apartment residents have this opportunity as well. Which gas boiler is better to choose?

What is a parapet boiler?

Parapet gas boilers are units designed to heat rooms and also provide them with hot water. Design features Such equipment is very well suited for safe use at home. The power of parapet units varies from 15 to 45 kW, this is enough for heating and hot water supply to an apartment or house, but it all depends on the size of the heated area, heat loss and the minimum air temperature outside the window. To choose the right gas heating unit, you must take all these factors into account.

Parapet boilers can be installed independently, you just need to follow the installation instructions.

Main differences and characteristics of a gas parapet boiler

• Parapet boilers are energy-independent units.
• One of the differences between a parapet boiler and a stationary gas unit is the design of the fuel combustion chamber. The parapet gas boiler has a closed combustion chamber, which ensures complete removal of combustion products outside the room in which it is installed.

The combustion of oxygen in the room is also eliminated, which is an important factor for small areas with poor ventilation. This design of the combustion chamber ensures better fuel combustion, which increases the efficiency of the entire heating system.

• Due to the use of a closed combustion chamber, there is no need to install bulky gas ducts. This is suitable for those who do not have the opportunity to build such structures.
• In terms of their characteristics and design features, parapet boilers are very similar to wall-hung gas boilers. But the latter are very “capricious” in their operation, despite their popularity. For stable and durable operation of a wall-mounted unit, constant maintenance of pressure in the circulation system, high quality gas, soft water and other nuances are required.

To simplify operational requirements, parapet boilers were developed, which, despite their versatility, are not picky in operation, but some of the requirements specified in the unit’s passport must still be met.

• The body of the parapet boiler has special convection holes that provide heating of the room even without installing additional radiators. Thus, this multifunctional unit combines the functions of a “heater” and a “radiator” at the same time.
• Varieties of parapet boilers in terms of functionality can be: single-circuit - capable of providing only room heating, double-circuit - providing heating and hot water at the same time.
• A parapet gas boiler can be powered by a gas cylinder with a propane-butane mixture, as well as by a gas pipeline with natural gas.

Construction of a gas parapet boiler

• The body of a parapet boiler can have different sizes, designs and shapes.
• This unit can be installed in any convenient location. Can be hung on the wall or installed on the floor.
• Equipped with a closed combustion chamber.
• Can be installed Various types burners, which are divided mainly into single-level, two-level and modulating.
• The heat exchanger of a parapet gas boiler can also be various types: cast iron, steel or copper. Each of the heat exchangers has a number of advantages and disadvantages.
• The flue gas exhaust system is a coaxial chimney.
• For ignition, a piezo or electronic ignition system can be used.
• To ensure complete autonomy and safe work Heating systems use many electronic sensors and programs.
• To control the normal operation of the unit, as well as settings of operating modes, the device is equipped with the necessary controllers.

The chimney exits to the outside of the room through a hole in the wall; this pipe performs the function of removing combustion products, as well as supplying air, which is involved in the combustion process.

Coaxial chimney– these are two pipes of different diameters. A smaller diameter pipe runs inside a larger diameter pipe. Flue gases exit through the internal channel, and fresh air is taken in through the external channel.

Advantages of a parapet gas boiler

Drawing a conclusion on the characteristics of this unit, we can note its positive aspects:

• Possibility of use in premises of any purpose and even in apartments, without the construction of additional structures.
• Low cost compared to other types of gas boilers.
• Compact size and easy installation.
• A design feature that allows you to heat the room where the parapet boiler is located without the use of additional radiators, that is, the boiler itself is a heater due to the presence of convection holes.
• Multifunctionality and wide choice of capacities.

Despite the simplicity of design and operation, parapet boilers belong to gas equipment, which has clear requirements that must be met.

To do right choice gas heating boiler for a home, you need to take into account the heated area and heat loss. To do this, you need to take 2 kW of boiler power per 10 m2 of house area.

A parapet boiler is a universal and convenient heating unit that can be installed even in an apartment.

Parapet gas boilers: advantages and disadvantages

Parapet gas boiler

What is good about a parapet gas boiler? Consumer reviews indicate its compact size, ease of use and versatility. This type of heating devices is recommended for installation in small rooms. For example, in a standard city apartment it will not take up much space in the kitchen under the window. The parapet boiler can be placed in residential premises without looking back, since it does not use oxygen to burn the gas from the room. A perfect smoke removal system makes this equipment absolutely safe to use. Read also: " Which is better - a single-circuit or double-circuit floor-standing gas boiler?».

Typical equipment variety

The parapet boiler takes up very little space.

How to choose the right parapet boiler? Consumer reviews indicate the variety of models of this heating equipment. Today, the choice of device can be made according to the following parameters:

• by installation method: wall and floor, left-handed and right-handed;
• by the number of circuits: single- and double-circuit;
• according to the presence of automation: volatile and non-volatile.

In addition, equipment is classified according to its performance. So, today you can buy a single-circuit gas parapet boiler with a capacity from 15 kW to 40 kW. When choosing a double-circuit parapet gas boiler and reading its instructions, you will notice that water capacity is also added to the usual power. Thus, a device with a power of 12 kW-13 kW can heat up to 180 liters of water per hour, which is enough for 4 water intake points.

Based on the number of circuits, they distinguish between single and double-circuit boilers. The first option is equipped with a conventional heat exchanger. It has a plate structure, which increases the speed of the heat exchange process between the flames gas burner and coolant of the heating system. The heat exchanger is made of steel, 3 mm thick. It is this construction material that ensures the durability of the equipment and a fairly high heat transfer rate. Increasing the thickness of the steel reduces the degree of exchange of thermal energy between the water in the heating circuit and the gas burner.

Parapet boiler design.

The double-circuit parapet gas boiler is equipped with an additional copper coil. Due to its operation, water is prepared for the hot water supply circuit of an apartment or house. Water heating is carried out only by flow method. The storage tank inside the boiler will significantly increase the dimensions of the equipment. Therefore, use it for installation in ordinary apartment will be impossible.

Depending on the installation method, there are wall and floor models. However, the classification of parapet devices does not end there. There are boilers with left-hand pipes for connecting the gas main, heating and hot water circuits. There are also right-hand ones. When purchasing equipment, you must not lose sight of this fact. Read also: " How to choose a wall-mounted gas boiler for your home».

Dimensions and dimensions directly depend on the performance of the boiler and the number of circuits. Thus, a single-circuit gas parapet boiler will be smaller and lighter compared to a similar device equipped with two circuits. If you compare two single-circuit boilers, the one whose productivity is higher will be larger. This is due to the size of the gas burner and heat exchanger.

How to install a chimney for a gas boiler without errors?

You can read everything about aluminum chimneys for gas boilers here.

How does a parapet boiler work?

There is a coil inside.

The body of the parapet boiler is made of steel with a minimum thickness of 3 mm. Powder coating on the outside and inside of the case makes it resistant to corrosion. Even in conditions of high humidity, which is often observed in the kitchen, the gas heating element will retain its decent appearance and integrity. Thick steel increases the resistance of the device body to direct mechanical stress. There are no dents or paint chips on its surface.

The design of a parapet gas boiler is simple and efficient. The equipment design is as follows:

• steel body;
• closed combustion chamber;
• igniter and gas burner;
• coaxial chimney;
• steel heat exchanger, if this is a double-circuit equipment - a secondary copper coil.

The security system is presented:

Floor-mounted parapet gas boilers do not differ in structure from their wall-mounted counterparts. The only difference is in the power of the equipment. With increasing power, the weight and dimensions of the device increase.

A parapet gas boiler can be installed in any convenient location in the building. The main requirement is that the equipment must be located close to the wall in order to lead the coaxial chimney to the street. The main advantage of parapet heating elements is a closed combustion chamber and a coaxial chimney. These two structural elements allow you to mount the device in any convenient place without fear for human health. After all, the sealed combustion chamber does not allow toxic gas oxidation products to penetrate into the living space.

The coaxial chimney is a steel structure consisting of two pipes. One of them with a smaller diameter is located inside a pipe with a larger diameter. Free space is created between pipes of different diameters. Through this space, wall-mounted and floor-mounted parapet gas boilers take in air for gas combustion. The oxidation products of the energy carrier come out into the street through the internal pipe. As a result of boiler operation, air is not drawn from the room. That is why parapet heating devices do not require a separate boiler room with good ventilation.

Installing a parapet gas boiler with your own hands is strictly prohibited. Installation of the device should only be carried out by specialists with the appropriate license. Only gas service employees should connect the device to the gas main.

Installation of a parapet boiler is carried out in the same way gas convector. The coaxial chimney is ducted outside through the wall. Wind protection is a must! Next, the installation of the flue pipes, heating circuit and water supply is carried out.

How does a boiler work?

Flow movement and names of structural elements.

If non-volatile equipment was purchased, then its operation begins with the piezo ignition button. As a result, the igniter or primary burner of the boiler begins to burn. If the equipment is volatile, that is, equipped with automation, it is put into operation using automation. However, non-volatile models are more common on the domestic market due to their versatility.

The operating principle of a parapet gas boiler is very simple. The pilot light ignites the main burner. Its flame is directed at the heat exchanger through which the heating circuit coolant circulates. The burner operates until the coolant temperature reaches the upper critical level. After this, the automatic heating element is activated. The gas valve is closed. As a result, the gas burner goes out, while the igniter continues to work. As soon as the temperature of the coolant in the heating circuit drops to the lower limit, the gas valve will resume the supply of energy to the burner. The latter will ignite from a working igniter. The water in the heat exchanger will begin to heat up again.

Several structural elements are responsible for the safe operation of the boiler:

• firstly, it is a thermocouple, which is located in the flame of a gas burner;
• secondly, the boilers are equipped with an element to control the presence of draft;
• thirdly, there is a thermostat with a thermometer.

Are you buying a parapet gas boiler? The instruction is the document on which the choice should be based. The instructions contain information regarding the power of the device, the rules for its installation and operation.

The thermocouple from the heat of the burner produces electricity little tension. It feeds the gas valve and keeps it open. If the flame inside the boiler goes out for some reason, the thermocouple stops producing electric current. The valve closes automatically. The gas supply stops.

Sectional view of a wall-mounted parapet gas boiler (rear view).

If there is no draft in the boiler, then the main structural element safety device(plate) – increases its temperature to +65°C. The signal from it goes to the gas supply valve. The latter closes and the gas burner stops working. A similar mechanism is typical for a non-volatile boiler. If the equipment is connected to the electrical network, then the traction control is controlled automatically.

A thermostat with a thermometer protects the boiler from overheating. As soon as the thermometer registers critically high temperature coolant in the heating circuit, it transmits a signal to the thermostat. The latter also stops the gas supply to the gas burner.

The wall-mounted parapet gas boiler at one time was a worthy competitor to conventional wall-mounted heating elements, despite their versatility. Thus, the latter were very demanding about the gas pressure in the gas pipeline, scale often formed on their heat exchanger, and they required uninterrupted power supply. Parapet devices are not so demanding on the pressure in the gas pipeline. Non-volatile models do not require power. Their coaxial chimney can be mounted both vertically and horizontally, which expands the possibilities of their installation.

Why does the installation of chimneys for boilers play a vital role when assembling a heating circuit?

What are the options for chimneys for gas boilers? The answer is here.

Possible problems with gas equipment of this type

Ice formation on the chimney.

Parapet gas boilers for heating can create several problems for their owners. First, their sealed chamber consists of two structural elements that are connected to each other by a porous, thermally resistant polymer-based material. If Maintenance the boiler is carried out at the wrong time, you may not notice how the thermoplastic will lose its tightness. Carbon monoxide and other toxic components of exhaust gas can enter the living space and cause poisoning. That is why timely maintenance of parapet boilers is mandatory.

Secondly, the coaxial chimney in inexpensive models is made of standard steel grades. At the same time, the operating rules for gas equipment require the use of only stainless steel when creating chimneys. Otherwise, soot and condensation accumulating on the chimney walls can form a chemically active environment.

It eats through steel walls. Carbon monoxide from the inner pipe enters the air flow going to the gas burner. As a result, there is not enough oxygen in the gas chamber for complete combustion of the energy carrier. Equipment performance decreases. Soot forms on the boiler walls, which accelerates corrosion processes.

Thirdly, with a coaxial chimney there is always the danger of the burner flame being blown out by strong gusts of wind. That is why, when installing the device, it is mandatory to install protection against the wind.

How justified is the use of parapet boilers?

A parapet boiler can be placed on the floor, directly in front of the radiator.

Parapet boilers today can compete with similar full-fledged gas-fired heating devices. After all, parapet equipment is compact in size and dimensions, and is not inferior to conventional boilers in terms of performance. The main advantage of parapet devices is the presence of a closed combustion chamber and a coaxial chimney. This allows you to place the device in living rooms. The chimney can be positioned both vertically and horizontally, which gives even more freedom in terms of placement of heating equipment.

The equipment can operate both as a heating boiler and in parallel as a conventional convector. In addition, the equipment is capable of servicing the DHW circuit. The advantages of the equipment include their durability, efficiency, long service life, and safety in use. The quality of the last parameter is controlled by a thermocouple, control of draft and coolant temperature. TO possible problems include poor quality of the coaxial pipe, untimely maintenance, blowing out the burner flame by strong gusts of wind.

Parapet gas boiler, reviews, technical specifications

How to choose a parapet type gas boiler?

Natural gas can safely be called the most popular and convenient type of fuel for use in autonomous heating systems of private homes, since, unlike coal, you do not need to worry about regular replenishment of reserves, you just need to connect to the local gas pipeline. That is why the largest number of individual heating systems are designed to use gas. One of the best options is a parapet gas boiler, which can also be used to heat a city apartment.

Such a boiler can be used to heat a city apartment

Initially, such boilers were developed as an alternative to wall-mounted ones, which, despite the fact that they had many advantages, were very demanding in terms of operating conditions. For stable operation they needed stable pressure, high quality gas, soft water and uninterrupted power supply. For this reason, they often failed and required regular maintenance. after-sales service. Therefore, over time, they were replaced by parapet boilers, which have less stringent operational requirements and ensure more stable operation of the entire heating system.

A parapet boiler is a non-volatile heating system designed for installation in private houses and apartments, combining the positive qualities of gas boilers and convectors.

Boiler structure

Parapet boilers have a closed combustion chamber, which does not communicate with the room in which the unit is installed and does not emit combustion products into its atmosphere, which is of great importance for small rooms with weak ventilation systems.

For the same reason, such boilers do not require the creation of a traditional chimney; only a side coaxial (coaxial) one is sufficient, which is mounted from two pipes located inside each other to supply fresh air to the combustion chamber and remove combustion products to the outside. Due to the presence of holes in the body of the parapet boiler, there is no need to install additional radiators in the room. With the correct calculation and choice of boiler model, one will be enough for full heating.

Parapet gas boilers are installed according to the same principle as convectors - the unit is connected to the gas and water supply systems through pipes, if the boiler is double-circuit, and is attached to the wall with brackets.

The coaxial chimney has a small diameter and can be laid directly in the outer wall on which the unit itself is located. It is best to install the pipe next to the window to make it easier to monitor its condition during operation of the heating system.

• Main advantages
• The main advantage of a parapet boiler is the already mentioned closed combustion chamber. Thanks to this design device, there is no need to install a full-fledged chimney, so the boiler can be installed in any room in which at least one of the walls is external.
• The presence of convection holes in the boiler body ensures full heating of the entire room without the need to install additional convectors, since the parapet boiler is both a “furnace” and a “battery”, combining all the positive aspects of these devices.

Possibility of installation in a city apartment. All that a parapet boiler requires is the presence of a gas pipeline and electricity in the house. In apartments, the installation of parapet boilers is usually carried out in the window sill space in the kitchen, but if there is none, the unit can also be installed near the wall, but in this case it will be necessary to create an external hole in it for a coaxial chimney.

• The heating device can be installed simply against the wall
• A wide range of parapet boilers allows you to choose the best option for a room of any size. Power can vary from 15 to 40 kW, depending on the selected model.
• Versatility. Among the model range there are options with both one and two circuits. A parapet boiler with two circuits not only heats the room, but can also be used to heat water if there is no hot water supply in the house. For individual system Parapet heating boilers have a relatively low cost, which makes them accessible to most segments of the population. Modern design

the housing does not spoil the overall appearance of the interior if the unit is installed in a visible place.

Choosing a gas boiler

Reliability primarily depends on the thickness of the steel used in the design of the heat exchanger. Unfortunately, not all manufacturers indicate this parameter, so when choosing a boiler you need to clarify this point with the seller separately, as this can play a key role in the operation of the parapet boiler.

Steel with a thickness of around three millimeters is considered optimal. If the steel is thicker, the heat transfer process will slow down, which will negatively affect the overall efficiency of heating the room. In addition to the thickness of the steel, its quality also matters. The quality of the metal and the entire boiler as a whole can be determined by the maximum pressure level allowed by the manufacturer. The higher it is, the more reliable and better quality the selected parapet boiler is made.

The quality of metal during manufacturing can be determined by the maximum level of pressure

The efficiency of a parapet boiler is influenced by the design of the heat exchanger and its efficiency. In order to determine how economical the selected boiler will be in operation, you need to find out its efficiency (efficiency factor), this parameter will most accurately show the efficiency of the heat exchanger and the boiler device as a whole.

To date, almost all manufacturers have achieved an acceptable level of efficiency, which is 90-92%. But just in case, it’s worth checking the efficiency level when purchasing, since in some cases two or three percent can make a difference. This indicator is the only one that will objectively reflect the efficiency of the boiler, because different rooms differ from each other in the level of their own thermal insulation, so reviews from people who have already bought a boiler will always be subjective.

To the significant technical parameters include the size, dimensions of the boiler, location of connection connectors and power.

The size and dimensions are selected individually in each case and depend on the location and installation conditions. Also important for the boiler is the location of the connectors. The modern model range includes options with both right and left connection of the boiler to gas and water supply. There are also universal models that can be connected from any side.

The power of a parapet boiler is no less important than its efficiency. The quality of room heating, as well as the efficiency of using the boiler, will depend on the choice of a model with optimal power, because if it is too powerful, gas and electricity will be wasted. The formula 1 kW per 10 m2 is often used, but in fact this is not correct, since this indicator is averaged so much that it almost never corresponds to reality. When calculating a power of 1 kW per 10 m2, the difference between an apartment and a house, the number of windows in the room, wall material, ceiling height and other parameters that make up the overall level of thermal insulation are not taken into account.

It is best to double this formula, that is, for 10 m 2 take 2 kW of power, and not one. In this case, a margin is obtained that takes into account windows, possible drafts, thin walls or high ceilings of the room. But, of course, it is best to consult with specialists when purchasing and determine the optimal boiler power individually in order to achieve the most optimal price-quality ratio for heating.

A parapet boiler is economical, easy to use, has a low cost, can perform the functions of a water heater and does not require the creation of an additional heating network, since it is both a stove and a convector.

The ease of installation allows you to connect the parapet boiler yourself, without the help of specialists.

To summarize, we can say that a parapet boiler is a convenient modern heating device that can be installed in any type of premises, in a private house, apartment, garage or any outbuilding.

A parapet gas boiler is a heating device using gas energy, most suitable for use in residential premises. What are the advantages of parapet boilers, and what is needed?

Most citizens prefer to live not in apartments, but in separate private houses. But to make your home comfortable and warm, you need an independent heating system. Previously, coal was used as fuel, the reserves of which had to be constantly replenished. Natural gas has become an alternative to this type of fuel, and the heating system using a parapet gas boiler is successfully used not only in cottages, but also in apartments.

This boiler uses natural gas

This type of gas equipment was created as a replacement for wall-mounted speakers, which, despite having many advantages, were still demanding on the conditions of use. . For trouble-free operation they needed:

• good quality gas;
• soft water;
• steady pressure;
• uninterrupted power supply.

In this video you will learn how a parapet boiler works:

Over time, they were successfully replaced by parapet gas boilers, which have less stringent requirements and ensure the most stable operation of the heating system. A parapet boiler is a unit designed for heating premises(houses and apartments) and supplying them with hot water. Thanks to the closed combustion chamber, combustion products do not enter the room.

Design and operating principle

According to the design features and technical specifications parapet boilers are similar to wall-mounted ones gas heaters. The boilers are equipped with:

• body made of sheet steel with a minimum thickness of 3 mm;
• closed combustion chamber;
• gas burner and igniter;
• a heat exchanger made of steel (if the device has two circuits, then the secondary coil is copper);
• coaxial chimney;
• safe use system (thermometer, thermocouple, draft sensor).

The inside and outside of the case is treated with a special powder coating that protects it from corrosion. Thick steel prevents mechanical damage. All this ensures a decent appearance and reliability of the unit.

The principle of operation of a parapet boiler is simple: the burner is ignited by the ignition device, the flame is directed to the heat exchange device, inside which the coolant circulates. As soon as its temperature reaches the required limit, the automatic heating element is activated. The gas valve closes automatically, the burner goes out, and the igniter continues to operate. When the water cools to the lower critical level, the gas supply to the burner will resume, the burner will light up from the igniter, and the water will begin to heat up.

Single and Dual Circuit Devices

Parapet boilers are produced in a standard rectangular shape, single- and double-circuit, left- and right-handed, which makes their installation easy and convenient.

Single-circuit ones are intended only for heating. They are equipped plate heat exchanger, which ensures the rate of heat exchange between the gas burner flame and the coolant.

The double-circuit parapet boiler has an additional copper coil, which provides the house with hot water supply. Water is heated only by flow. If you use a storage tank, the size of the equipment will increase significantly, which will make it impossible to install it in an ordinary apartment.

Rules and installation locations

Equipment of this type is used in rooms where a traditional chimney is not provided. A parapet gas boiler can be installed anywhere in the house thanks to a closed combustion chamber and a coaxial chimney, but the main condition is its location near the wall. This ensures that the coaxial pipe is brought out to the street.

The coaxial chimney is a stainless steel structure, consisting of two pipes of different diameters located one inside the other. Thanks to this design, a space is provided through which air mass flows to ensure gas combustion. Combustion products are removed through a pipe of smaller diameter. The coaxial chimney is directed through the wall to the street, and wind protection must be installed. After this, the installation of flue pipes, heating circuits and hot water supply is carried out.

Installing the equipment is quite simple, but doing it yourself is strictly prohibited. You should contact licensed specialists. Connection to the gas main is made exclusively by gas service employees.

Advantages and disadvantages

Despite its widespread use, this type of heating equipment has its pros and cons. Compared to models with similar functionality, The main advantages of using parapet boilers include:

1. Effective heating of rooms.
2. No need to stock up on fuel.
3. Ability to adjust the amount of fuel consumed.
4. Easy installation and maintenance.
5. No dirt or debris.
6. Temperature adjustment.

Along with the advantages, there is also a significant disadvantage: to install equipment, you must obtain permission from cadastral organizations. This is not an easy procedure. In total, it will take approximately 12 months to approve documentation, issue a permit, install equipment, check and seal the meter.

Currently, there is a wide range of parapet gas boilers on the market, so you should choose carefully. Which parapet gas boiler is better - single-circuit or double-circuit - depends on the operating methods and equipment parameters.