Gas parapet boiler. Parapet boilers: pros and cons. Types of parapet boilers and their connection Gas parapet boilers of low power

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 carried out according to the following parameters:

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

In addition, the classification of equipment is carried out according to its performance. So, today you can buy a single-circuit gas parapet boiler with a capacity of 15 kW to 40 kW. When choosing a double-circuit parapet gas boiler and reading its instructions, you will notice that water performance is also added to the usual power. So, 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.

By the number of contours, one and double-circuit boilers. The first option is equipped with a conventional heat exchanger. It has a lamellar structure, which increases the rate of heat exchange between the flame of a gas burner and the heat carrier of the heating system. The heat exchanger is made of steel, 3 mm thick. It is this structural material that ensures the durability of the equipment and a sufficiently high rate of heat transfer. 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.

Construction of a parapet boiler.

The double-circuit parapet gas boiler is equipped with an additional copper coil. Due to his work, water is prepared for the DHW circuit of an apartment or house. Water heating is carried out only in a flowing way. The storage capacity inside the boiler will significantly increase the dimensions of the equipment. Thus, it will be impossible to use it for installation in an ordinary apartment.

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

How is a parapet boiler arranged?

There is a coil inside.

The body of the parapet boiler is made of steel with a minimum thickness of 3 mm. Powder coated with outer and inner sides housing makes it resistant to corrosion. Even in conditions of high humidity, which is often observed in the kitchen, the gas heating element will retain a decent appearance and integrity. Thick steel increases the resistance of the instrument case to direct mechanical impact. On its surface, dents and chipped paint are not formed.

Parapet device gas boiler characterized by simplicity and efficiency. The structure of the equipment is as follows:

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

The security system is presented:

thermometer;
thermocouple;
traction sensor.

Gas boilers floor parapet structure do not differ from wall counterparts. The difference is only in the power of the equipment. With increasing power, the weight and dimensions of the device increase.

The video will help you to understand more about the device of the parapet boiler:

Installation of a parapet gas boiler can be carried out in any convenient location building. The main requirement is that the equipment must be located close to the wall in order to bring 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, a sealed combustion chamber does not allow toxic products of gas oxidation to penetrate into the living quarters.

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 formed between pipes of different diameters. Through this space, wall and floor parapet gas boilers take in air for burning gas. Oxidation products of the energy carrier go out through the inner pipe. As a result of the operation of the boiler, no air is taken from the room. That is why parapet heaters do not need a separate boiler room with good ventilation.

Do-it-yourself installation of a parapet gas boiler is strictly prohibited. Only licensed professionals should install the device. Only employees of the gas service 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 brought out through the wall. Wind protection is a must! Next, the installation of the gas duct pipes, the heating and water supply circuit is carried out.

How does a boiler work?

The movement of flows and the name of structural elements.

If non-volatile equipment was purchased, then its operation begins with the piezo ignition button. As a result, the igniter or the primary burner of the boiler starts 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 in the domestic market due to their versatility.

The principle of operation of a parapet gas boiler is very simple. The igniter ignites the main burner. Its flame is directed to the heat exchanger through which the heat carrier of the heating circuit circulates. The burner operates until the coolant temperature reaches the upper critical level. After that, 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 heat carrier 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 start to heat up again.

Several structural elements are responsible for the safety of the boiler:

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

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 is supplied to the gas valve and keeps it in the open position. If the flame inside the boiler goes out for some reason, the thermocouple stops generating electricity. The valve closes automatically. The gas supply is stopped.

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

If there is no draft in the boiler, then the main structural element of the 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 mains, then the traction control is under the control of automation.

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

The wall-mounted parapet gas boiler once competed with conventional wall-mounted heating elements despite their versatility. So, the latter were very demanding on the gas pressure in the gas pipeline, scale often formed on their heat exchanger, they needed uninterrupted power supply. Parapet devices are not so demanding on the pressure in the gas pipeline. Non-volatile models do not need power supply. Their coaxial chimney can be mounted both vertically and horizontally, which expands the possibilities of their installation.

Possible problems with this type of gas equipment

Formation of ice 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 interconnected 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 poisonous constituents of the exhaust gas can enter the living area and cause poisoning. That is why timely maintenance of parapet boilers is a must.

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

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

Thirdly, with a coaxial chimney, there is always a danger of blowing out the burner flame with 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?

The parapet boiler can be placed on the floor, right in front of the battery.

Parapet boilers today can compete with similar full-fledged gas-fired heating devices. After all, parapet equipment is distinguished by its compact size and dimensions, it is not inferior to conventional boilers in terms of performance. The main advantage of parapet appliances 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 placed both vertically and horizontally, which gives even more freedom in terms of placement of heating equipment.

The equipment can work both as a heating boiler and in parallel as a conventional convector. In addition, the equipment is able to serve the DHW circuit. The advantages of the equipment include their durability, efficiency, long service life, safety in use. The thermocouple, draft control and coolant temperature are responsible for the quality of the last parameter. TO possible problems include the poor quality of the coaxial pipe, untimely service, blowing out the burner flame with strong gusts of wind.

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 positive traits 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 into the combustion chamber and the output of 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 into 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 a “furnace” and a “battery”, combining everything positive sides 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.

Wide the lineup parapet boilers allows you to choose best option for any space. 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 contours. A parapet boiler with two circuits not only heats the room, but can also be used to heat water if there is no hot plumbing.
For individual heating system parapet boilers have a relatively low cost, which makes them affordable for most segments of the population. Modern design 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 specifications 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 useful action), 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 objectively reflects 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 in individually 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.

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 possible installation such units in small rooms, since oxygen is not taken from the room for the process of gas combustion.

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):

Installation technology: the parapet boiler is made for mounting on walls and on the floor, there are also left-hand and right-hand models;
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;
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.).

The single-circuit unit has a standard plate-type heat exchanger (jacket), which accelerates 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.
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:

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

Group of automatic control and management:

Thermometer;
Thermocouple (temperature sensor);
Air draft sensor.

Self installation 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 room 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 metal structure from two pipes different diameter. A smaller diameter pipe is inserted into a 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 gas convector: the smoke exhaust system of the coaxial chimney is led through the wall of the house or apartment to the street, while the end of the pipe must be protected by a windproof cap so that a gust strong wind did 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.

The 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, with the help of circulation pump or natural current moves the working fluid. 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 temperature of the water 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:

Thermocouple, which is installed directly in the burner flame;
The draft control sensor is installed at the outlet of the combustion chamber;
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 value of the 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 equipped in the building due to its versatility and undemanding to work 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:

The closed combustion chamber is made of two elements connected to each other. 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;
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;
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 pure form will seep into 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.

One way to organize an economical and very efficient system for heating your home and heating domestic hot water is with parapet gas boilers. It is also worth buying such equipment if the device is needed not for a private house, but for city apartments. Such a wide scope of use is due to their design features.

Distinctive features of parapet gas heating boilers

The line of any manufacturer of this equipment will include models with a wide power range, up to 45.0 kW. Thanks to this, buyers will be able to choose a wall-mounted gas boiler for a building with an area of up to 450 sq.m.

Installation of units of the presented type can be carried out in the most convenient place. They can be both hung on a vertical plane, and conveniently placed on the floor. An indispensable condition is to place the device near an external wall, so the chimney must be located horizontally and pass through the wall opening to the street.

All parapet gas heating boilers are made with sealed fireboxes. This means that for the fuel mixture, oxygen is taken from outside, through one of the pipes of the coaxial chimney. This feature very convenient, so it makes it possible to mount the unit directly in the residential area.

Functionality and equipment of gas wall-mounted parapet-type boilers

The devices can be equipped with gas burners of various designs:

single stage
two-stage,
modulated.

The modes of operation are also different. There are devices only for heating, but there are models that can cook hot water to meet business and domestic needs.

The units are equipped with heat exchangers made of cast iron, copper and steel. Each of the types has its own pros and cons and should be selected based on operating conditions. For ignition of the gas apparatus, an electronic or piezoelectric ignition system is usually provided.

Advantages and disadvantages of parapet models

The positive features of the equipment are as follows:

wide scope, due to the lack of need for additional facilities;
small dimensions and weight;
very affordable cost, especially compared to other devices;
Possibility of use without a heating circuit for one room due to the presence of convection holes in the housing.

Lack of heating with parapet gas boilers the same as for other heat generators using "blue fuel": the need to obtain permission from regulatory organizations. It may take several months to agree on all the installation details, obtain a positive decision and seal the equipment.

A parapet gas boiler is a device with a hermetically sealed combustion chamber, which is used to heat the coolant and water in the DHW system. It takes in clean air and removes combustion products outside the room, eliminating the emission carbon monoxide to the boiler room.

Device features

The body of this equipment is rectangular shape, which adds convenience during installation, and the method of its attachment can be left, right or universal (double-sided).

The most popular are parapet boilers, whose power does not exceed 15 kW, although there are more powerful samples on the plumbing market, designed for 35 kW or more.

Difference from analogues

At the time of development, boilers with a convector were conceived as a replacement for wall-mounted appliances of a similar purpose. After all, their predecessors require frequent maintenance, they are capricious and need high quality gas.

It is believed that the new kind heating equipment is less demanding in operation and does not need frequent maintenance. In addition, there is no connection to the chimney, which is a significant advantage and makes it possible to install in any convenient room that has an outer wall.

Installation location

In most cases, the parapet boiler is fixed in a niche under the window, where a radiator is usually placed. The main difference from wall-mounted and floor-standing devices is the power range, mounting method and output channel equipment. Currently, such a unit is a convector and a gas boiler at the same time, and can be installed not only in country houses, but also in apartment buildings.

The only thing worth remembering is the complete volatility of the device, because its operation will require an uninterrupted supply of electricity. In this, it is completely similar to similar turbocharged devices designed to work in a heating system with forced circulation of an energy carrier.

Device device

Due to the design features and type of purpose, such devices have firmly occupied the niche of the most popular elements of the heating system. Their device allows the universal use of the unit in various conditions.

contours

Parapet boilers, like most of these units, can be single-circuit or double-circuit, so they perfectly cope with the task of heating water for household needs where there is no hot water supply, and do it simultaneously with the main purpose.

Chimney

For the normal operation of the device, the presence of a vertical chimney is not necessary, since the process of removing combustion products is carried out through through hole in the wall.

Such a coaxial chimney consists of two pipes that are interconnected. One of them is responsible for the supply of oxygen, and the other for the removal of carbon monoxide to the outside.

Convector

The convector integrated into the boiler body makes it possible to do without additional installation radiators and other heating appliances, if this does not violate the heat balance.

In order to create a comfortable microclimate in the room, it is necessary to choose the right parapet boiler, having previously familiarized yourself with its technical characteristics.

Main advantages

Having familiarized yourself a little with the design features of the heater and the scope of its application, you can determine the main advantages that it has:

closed combustion chamber and, as a result, the possibility of installation anywhere;
the presence of convection holes, thanks to which you can do without additional installation of convectors;
power sources - gas and electricity, which means that you can install the device in city apartments;
a large selection of models with a power corridor from 15 to 40 kW, which facilitates the selection for rooms with different areas;
the presence of single-circuit and double-circuit boilers;
modern design that allows you to install the device in a conspicuous place;
low cost, thanks to which the boiler becomes affordable for all segments of the population.

Right choice

Naturally, various models differ from each other technical parameters, which directly affect the advantages and disadvantages of the boiler.

Reliability

To judge the reliability of the device, it is necessary to find out how thick the steel of its case is. Unfortunately, some manufacturers neglect this rule and do not indicate this parameter on the packaging of the heat exchanger.

The optimal thickness of the steel wall is considered to be within three millimeters. If the body thickness exceeds this value, heat exchange processes will be slowed down, which will certainly affect the comfortable heating of the room.

Along with the thickness of the metal, an indicator of its quality is very important, which can be determined by the level of allowable pressure specified by the manufacturer. Of course, the higher the indicator, the better and more durable the unit.

economy

The cost-effectiveness of parapet boilers is indicated by their design and efficiency in operation. To find out how economical a heat exchanger will be, you need to find out its efficiency. It is this parameter that can best tell about the ability of the device to save energy.

Today, the vast majority of manufacturers strive to conquer the market, therefore, they monitor the energy-saving qualities of their products. So, the optimal value of the efficiency factor can be considered 90 - 93%.

Remember, this is the only indicator that will most accurately tell you about the effectiveness of the device. However, it is also necessary to take into account the features of the heated room, its size and the degree of thermal insulation.

Technical specifications

When choosing a heating boiler, you need to pay attention to its dimensions, power and placement of connectors and fasteners. All these indicators affect the installation process and the location of the boiler.

Pay close attention to the execution of the connection to the water supply and gas mains (left, right). This does not apply to devices with a universal (two-way) connection method.

The power indicator in its importance is hardly inferior to the efficiency of the equipment. The optimally selected parameter will determine the heat balance in the room and fuel economy. If the power is excessive, you will encounter an overrun of gas and electricity.

The average calculation looks like 1 kW per 10 m² of the room, however, thermal insulation, wall material and other features of the building are not taken into account here, so it is advisable to double the kW figure. Thus, the negative effect of drafts will be neutralized, thin walls, dilapidated window frames.

Installation

Parapet boilers are installed on the same principle as convectors. First of all, a hole with a small diameter is created in the outer wall to remove exhaust gases and take in oxygen.

The exit point is best set up next to the window, which will allow access to control its operating condition and, if necessary, carry out maintenance. There are a number of rules according to which installation work. They are quite simple and can be done by hand in the following steps:

a coaxial chimney crashes;
the first air pipe is installed;
a water pipe is connected;
fasteners are tightened, a heater is installed;
the second branch pipe is mounted;
chimney sections are installed at an angle;
sections are connected to the branch pipe;
protection is mounted, pipes for water supply are connected, an expansion tank is connected.