Gas parapet boiler. Parapet gas boiler Parapet type gas boilers

The best boiler manufacturers

There are many popular manufacturers from Europe, Russia, Korea, China, etc. on the heating systems market. In the assortment of each brand there are successful and effective models, but most often such units belong to the expensive segment. Naturally, the quality of European equipment is much higher than that of Chinese heating systems, but the price is correspondingly higher.

Features of equipment from different manufacturers:

• The Korean company Navien produces inexpensive devices and a large number of spare parts for them. Of course, the quality of the company's cheapest devices is not high, but you can find several good models in the expensive segment.
• Baxi is a well-known Italian manufacturer. The company's boilers are distinguished by their functionality and reliability, despite the fact that most of the units are assembled in China.
• The domestic brand Lemax produces a lot of good parapet boilers, which are notable for their low price and acceptable quality. The assembly of equipment falls short of European standards, but the cost compensates for this shortcoming.
• The well-known brand Ariston also produces good heating systems. The company's equipment stands out for its economy and quality.
• The German brand Vaillant is a well-known manufacturer of premium heating equipment. If funds allow, then it is worth giving preference to the parapet boilers of this company.
• Some devices from the Slovenian company Protherm can be compared in quality and reliability with Baxi units. The cost of gas boilers of the company is significantly lower than that of the Italian brand.
• The Artyom company is a well-known Ukrainian brand that produces inexpensive and reliable boilers.

Many Russian and Ukrainian companies are engaged in the development and production of heating systems, but only a few create high-quality equipment.

Top Models

Before you buy a gas double-circuit parapet boiler, you need to figure out which manufacturer is better. This will help to significantly reduce not only the number of models, but also to understand what quality the products will be. Agree, it's easier to compare some of the best models:

• The Zhytomyr-M ADGV 15 CH model, created by Artyom, is a reliable device with an efficiency of 92%. The cost of an affordable unit is in the region of 18-20 thousand rubles.
• The boiler "Termomax-C 12E", developed by the Termomax brand, has an efficiency of 90% and is able to heat rooms of 120 sq.m.
• The Slim 2.300 Fi device, designed by the Baxi brand, is a double-circuit boiler with adjustable power from 14.9 to 29.7. The unit is suitable for rooms with a size of 140-160 sq.m. The device belongs to the expensive segment, the price of the device ranges from 120 to 140 thousand rubles.
• The ecoCompact VSC D INT 306/4-5 190L model, designed by the German brand Vaillant, is a reliable but expensive device capable of heating an area of ​​150-170 sq.m. The unit is equipped with a 190 l boiler.

If you need a budget and high-quality boiler, you can choose one of the Zhitomir models created by the Artyom brand.

Outcome

Parapet-type gas boilers are the best solution for an apartment or a small house. A wide range of models allows you to choose the best solution both in terms of quality and price. A properly selected device will give warmth for many years.

It is important to know how to properly install a parapet gas boiler into a building. The video shows all the subtleties of installing heating equipment.

What to do if a parapet gas boiler blows out.

There is no wind protection on the chimney head. The casing, manufactured at the factory, already has a special insert that protects against gusts of wind. Protection can be made from any galvanized steel, attaching it to the casing with press washers or rivets.

Reading time: 4 min

Many boiler owners have no idea what a parapet boiler is, although they have been using them for a long time. This modern unit belongs to the class of energy-efficient devices and removes flue gases using a coaxial chimney mounted in a through hole in the building wall.

Units equipped with a closed firebox, it is allowed to install them in small rooms. Since the oxygen necessary for combustion is not taken from the living area, it is not dangerous. The heating unit is so compact that it can easily fit even in the kitchen under the windowsill.

What is a parapet boiler

The body of the boiler is made of steel 3 mm thick, painted with a special refractory anti-corrosion coating, which ensures its resistance to mechanical and corrosive influences.

The main elements of the boiler:

• closed firebox;
• gas burner with igniter;
• coaxial chimney;
• two heating circuits with independent boilers made of copper and steel.

Control unit: pressure and draft sensors, thermometers and thermocouples, they protect the boiler from overheating. When the thrust in the furnace drops to 0 mm.w.st, the boiler instantly starts to overheat the water, when the temperature rises above 65C, the signal from the plate goes to the cutter, it cuts off the gas, and the combustion stops.

The thermocouple, under the influence of heat from a gas flame, creates a small voltage that controls . During the absence of combustion, the voltage in it drops to 0 V, the valve instantly cuts off the gas supply to the boiler.

The principle of operation of parapet gas equipment

1. The burner is ignited with a wick or igniter.
2. Gas, burning, releases heat, which heats the boiler.
3. Network water with the help of a circulation pump or with natural circulation, heating up, leaves the boiler and enters the heating devices located in residential, public or industrial premises.
4. The gas combustion process will continue until the water in the heating circuit is heated to a predetermined level, after which it will be automatically turned off by a gas valve installed in front of the boiler.
5. The wick continues to function and will re-ignite the burner when the temperature of the network water drops.

Pros and cons of parapet boilers:

1. Possibility of indoor use.
2. Affordable prices.
3. Small geometric dimensions of the installation.
4. The speed and simplicity of installation work.
5. Possibility of use without installation of additional radiators.
6. Large power range.

There is only one drawback - energy dependence.

Types and prices

The advantage of such boilers is a large selection of models with different fixtures: floor and wall. When choosing a boiler, the actual connection conditions are taken into account.

Boiler equipment from European factories, Russia, the CIS countries and China is quite widely represented on the construction market. It is clear that the quality of equipment from the EU is higher than that of boilers from China, but the price is much higher.

Popular parapet boilers:

Parapet boiler installation

Parapet gas boilers are classified as fire hazardous equipment, and therefore, independent installation of equipment is prohibited.

Installation and installation work of this type of equipment can be carried out by certified craftsmen, and representatives of Gorgaz can connect it to the gas network.

Violation of these rules creates a danger to the life of people and may damage the equipment.

Parapet boiler installation process:

1. The smoke exhaust system is led through the outer wall of the room into the environment.
2. Protect the top of the pipe with a windproof cap so that a powerful wind does not tear the torch from the nozzle.
3. Install pipes for water, gas and hot water networks, it may be necessary to constantly maintain pressure, with installation in the pump circuit.
4. Perform the processing of the wall intended for the installation of the unit with fireproof materials for fire safety.
5. Equip the furnace room with a ventilation system.
6. To maintain fire safety, it is forbidden to install the boiler closer than 0.5 m to furniture, wooden and any other combustible objects.
7. It is forbidden to remove the chimney in closed rooms, rooms from SIP panels, entrances, attics.
8. Equipment is selected according to a previously completed thermal scheme project.
9. The installation sequence algorithm depends on the device model. Specific instructions for the intermediate stages of installation and commissioning are issued by the manufacturer.
10. First, a channel is punched to bring the chimney into the environment. The recommended place is next to a window in order to facilitate further maintenance of the chimney for the gas boiler and to check the functionality.
11. Install the air pipe and fix it so that the part does not move.
12. Perform installation of the boiler feeding line.
13. Studs are installed in the wall to secure the boiler.
14. The chimney section is installed in a similar way and fixed with maximum density between the assembly elements. It is necessary to fix the chimney section at an angle to drain condensate.
15. Adjust the gaps so that the burning of the flame is even without interruptions.
16. They connect pipes, batteries and an expansion tank in the house heating system.
17. After the installation is completed, the water network is pressure tested with a pressure of 1.5 from the working one.
18. To connect the unit to the gas network, a representative of the gas service is invited.

A distinctive feature of the parapet boiler is that oxygen is not burned during gas combustion, which is important, especially in the autumn-winter period. To tie it with existing engineering networks, laying complex communications is not required, a wall with a hole for the exit of the coaxial pipe is enough.
Users rightly believe that parapet boilers are universal and promising for installing individual heat supply in a private house or apartments in a multi-storey building.

The requirements governing the connection of gas equipment are so high that in some cases, installation is not possible, for a number of reasons. The parapet gas boiler has a principle of operation that is different from its classic counterparts. Changes in the internal structure somewhat reduce the requirements associated with connection, which makes installation possible, even in apartments of multi-storey buildings.

The device of a parapet gas heating boiler

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

What is the difference between a parapet boiler and a chimney boiler

• The absence of a classic chimney. In classic boilers, air is taken directly from the room. After burning the gas, the combustion products go into the vertical chimney under the action of natural draft. In parapet equipment, air is taken in and combustion products are removed using a chimney.
• 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 intake is carried out along the outer contour of the chimney, after which it enters the burner from below. The heated air passes through the 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 parapet boiler, per 10 kW, will be about 1 m³ / hour. A double-circuit unit will consume approximately 15-20% more fuel needed to heat hot water.

Which parapet boiler is better to choose

• Productivity - average power indicators, calculated by 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 - a parapet single-circuit gas boiler, works only for heating. To connect hot water, 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 operation.
• Manufacturer - the rating of the most reliable boilers, headed by German manufacturers, Austrian and Czech models immediately follow them. Domestic parapet gas boilers, with a closed combustion chamber, have an attractive cost and good thermal performance.

Models manufactured by factories located in neighboring countries are popular:

• Household gas parapet boilers of Russian production:
  • Lemax;
  • Hephaestus;
  • Barsky Machine-Building Plant;
  • Helios;
  • Danko;
  • Conord;
  • heatline;
  • Taganrog gas apparatus.
• Ukrainian gas heating boilers of parapet type, for apartments and private houses:
  • Thermomax;
  • 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. At the same time, the premises must comply with the minimum requirements stipulated in the above regulatory documents. During installation, it is required to strictly follow the installation procedure and rules.

Requirements for the room under the 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 - in the boiler room there must be a working supply and exhaust ventilation. Doors are installed without thresholds. Opening windows are a must.
• 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. Together with the operability of the boiler, the operation of the supply and exhaust ventilation is checked. On the verification made, an act is drawn up.
• Commissioning of the boiler is possible only after an examination by a representative of the supervisory authorities, compliance with all requirements regarding the correct connection of gas equipment.

Chimney for parapet boiler

Proper connection to a horizontal chimney must meet several requirements:

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

How to protect a parapet boiler from the wind

If the intensity of shutdown is greater than 1 time in several heating seasons, it will be necessary to eliminate the source of malfunctions.

The reasons why a gas parapet boiler may go out are as follows:

• There is no wind protection on the chimney head. The casing, manufactured at the factory, already has a special insert that protects against gusts of wind. Protection can be made from any galvanized steel, attaching it to the casing with press washers or rivets.
• Incorrect settings are set - in order not to blow out the parapet boiler, it will be necessary to lower the allowable gas pressure at which the module will remain operational.
• Insufficient traction intensity - the gas duct is designed in such a way that the slightest violation in traction characteristics will lead to the boiler shutting down. To eliminate problems, check the correct connection of the chimney and correct the mistakes made.

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

Not all owners imagine 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. The 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 compactness: a gas-fired parapet boiler can easily fit in the kitchen under the windowsill 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 safe smoke exhaust system, which also offers 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 in selling companies):

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

The thermal power that parapet boilers have varies between 15 kW-40 kW for a unit with one circuit. If the installation of parapet equipment with two water heating circuits is chosen, then the capacity for heating water for domestic needs should be added to the rated power. For example, parapet boilers with a capacity of 12 kW -15 kW easily heat up the volume of water up to 180 l / h, and this, according to the standards, is four points of water intake (faucets, toilet bowls, faucets, showers, etc.).

1. The single-circuit unit has a standard plate-type heat exchanger (jacket), 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. Parapet double-circuit gas boilers have, 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 the DHW capacity is increased by an additional hot water tank, then such a boiler can no longer be installed in the kitchen.

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

Parapet equipment device

The body of the unit is coated with powder fireproof anticorrosive paint, which, for working conditions in the kitchen, saves from the action of high humidity and rusting of the metal. The thick 3-mm case (not the casing, but the body of the working unit) is resistant to mechanical stress.

The equipment is arranged simply but effectively:

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

Group of automatic control and management:

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

Self-installation of parapet equipment is not possible - this should 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 stand next to the wall - so the coaxial chimney will be short and safer. The main advantage of gas-fired parapet boilers is a closed-type combustion chamber and a coaxial chimney that can be installed anywhere in the room. These two nodes allow the boiler to be placed anywhere in the premises without fear for the safety and health of the residents, since neither the hermetic closed combustion chamber nor the autonomous chimney allow toxic gases to enter the atmosphere of residential premises.

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

Do-it-yourself installation of a parapet gas boiler with your own hands is strictly prohibited. Licensed professionals should be engaged in the installation and commissioning of gas equipment, and only employees of the regional gas service have the right to connect the parapet gas boiler to the gas main.

The process of installing gas parapet equipment is similar to installing a gas convector: the smoke exhaust system of a coaxial chimney is led out through the wall of a house or apartment to the street, while the end of the pipe must be protected by a windproof cap so that a gust of strong wind does not extinguish the wick. Then, in the same way, pipes for water, gas, heating and hot water circuits are installed.

How the boiler works

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 readings of the sensors. More reliable, versatile and easy to operate - non-volatile models of gas parapet boilers, so they are more popular in the domestic market.

Parapet gas equipment works according to a simple and understandable technology: the gas burner of the boiler is ignited from the wick and heats the heat exchanger, through which the working fluid moves with the help of a circulation pump or natural current. The gas will burn until the temperature of the water 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 boiler inlet. The wick is working at this time, and is ready to ignite the burner again at any time, as soon as the water temperature in the system drops below the set parameters, and a heating command is received.

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

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

Why a thermocouple is needed: 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, then the voltage in the thermocouple disappears, and the valve closes automatically, blocking 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 goes to the supply gas valve, it closes and the combustion ends. This is how the safety group of a non-volatile boiler works. If the boiler is connected to the mains, then all processes are controlled by the 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 a thermometer fixes 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 even in greater demand than conventional floor-standing boilers with a chimney equipped in the building due to its versatility and undemanding operating parameters. For example, conventional wall-mounted units are sensitive to changes in gas pressure in the line, scale appears on the boiler jacket more often because of this, in addition, such units require an uninterrupted supply of electricity.

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

Problems and solutions with parapet gas equipment

Despite all the security measures 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 by polymeric materials. If the maintenance schedule is not followed, the polymer layer may begin to break down. , which will lead to the leakage of toxic combustion products into living quarters;
2. The material of coaxial chimney pipes in cheap models of parapet units can be made of black steel, which burns out quickly. 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 condensate quickly accumulate on them, the air draft slows down, corrosion corrodes the metal, all toxins can freely enter the room. In addition, carbon monoxide from the chimney, entering the combustion chamber through the slots in the chimney, can extinguish the burner or reduce its burning power;
3. With the walls of the coaxial chimney broken by corrosion, the risk of blowing out the flame with gusts of wind increases significantly, which means that the gas in its pure form will seep into the living quarters. This means only one thing - the wind protection of the chimney is mandatory, as well as checking the material from which the parapet equipment pipe is made.

Natural gas can be safely called the most popular and convenient type of fuel for use in autonomous heating systems of private houses, since, unlike coal, you do not need to worry about regular replenishment of supplies, 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.

Initially, such boilers were developed as an alternative to wall-mounted ones, which, despite the fact that they had a lot of advantages, were very demanding on 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 needed regular service. Therefore, over time, they were replaced by parapet boilers, which have not such stringent operational requirements and ensure more stable operation of the entire heating system.

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

Boiler device

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 lateral coaxial (coaxial) chimney is sufficient, which is mounted from two pipes located in each other to supply fresh air to the combustion chamber and output combustion products to the outside. Due to the presence of holes in the body of the parapet boiler, it is not necessary to install additional radiators in the room. With the correct calculation and choice of the boiler model, it alone will be enough for full heating.

Parapet gas boilers are mounted according to the same principle as convectors - by means of nozzles, the unit is connected to the gas and water supply systems, 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. The branch pipe is best displayed next to the window, so that it is easier to control its condition during the 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 provides full heating of the entire room without the need to install additional convectors, since the parapet boiler is both an “oven” and a “battery”, combining all the positive aspects of these devices.
• Possibility of installation in a city apartment. All that is required for a parapet boiler 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.

• A wide range of parapet boilers allows you to choose the best option for premises of any area. Power can vary from 15 to 40 kW, depending on the model chosen.
• 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 an individual heating system, parapet boilers have a relatively low cost, which makes them affordable for most segments of the population. The modern design of the housing does not spoil the overall appearance of the interior if the unit is installed in a conspicuous place.

Choosing a gas boiler

Between themselves, parapet boilers, in addition to technical characteristics and power, can differ in efficiency and reliability.

Reliability primarily depends on how thick the steel is used in the design of the heat exchanger. Unfortunately, not all manufacturers indicate this parameter, therefore, when choosing a boiler, you need to clarify this point with the seller in a separate order, since this can play a key role in the operation of a parapet boiler.

Steel with a thickness of around three millimeters is considered optimal. If the steel is thicker, then the heat transfer process will slow down, which will negatively affect the overall efficiency of space heating. 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 level of pressure that is allowed by the manufacturer. The higher it is, the more reliable and better the selected parapet boiler is made.

The efficiency of a parapet boiler is affected 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 (coefficient of performance), 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 is worth clarifying the level of efficiency when buying, since in some cases even two or three percent can matter. 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 the reviews of people who have already bought a boiler will always be subjective.

Significant technical parameters include the size, dimensions of the boiler, the location of the connectors for connection and power. The size and dimensions are selected in each case individually and depend on the place and conditions of installation. 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 characteristic than its efficiency. It is from the choice of a model with optimal power that the quality of space heating, as well as the efficiency of using the boiler, will depend, because if it is too powerful, then gas and electricity will be wasted. The formula 1 kW per 10 m 2 is often used, but in fact this is not correct, since this indicator is so averaged that it almost never corresponds to reality. When calculating the power of 1 kW per 10 m 2, 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, take 2 kW of power for 10 m 2, and not one. In this case, a margin is obtained that takes into account windows, possible drafts, thin walls or high ceilings in the room. But, of course, it is best to consult with specialists when buying and determine the optimal power of the boiler on an individual basis in order to achieve the most optimal ratio of price and quality of heating.

The parapet boiler is economical, easy to operate, has a low cost, can serve as 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 resorting to the help of specialists.

Summing up, 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.