Wall-mounted parapet gas boiler. What is a parapet boiler: selection and installation

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For many owners of private homes, choosing a heating boiler is a difficult task.

It is necessary to choose the best option that has the most successful set of functions and characteristics.

This is only possible if you have sufficient knowledge about the design and operating principle of gas boilers, understanding their features and advantages.

Exist different types gas units with their own characteristics and capabilities.

Let's consider one of the groups of such equipment - parapet boilers.

Parapet gas boilers are heating units, combining the features of atmospheric and turbocharged models. They are completely energy independent, but are equipped with a closed combustion chamber.

A special feature of this design is the use of a coaxial chimney, which is connected to the rear of the unit and vented to the street. Smoke exhaust and fence fresh air occurs as a result of convection processes.

When the boiler is put into operation, no odors are felt in the room; there are not even traces of soot or other combustion products.

In addition, oxygen does not burn out in the room, which allows you to maintain a normal microclimate.

Another feature of parapet boilers is the ability to be used as independent heating elements. There are special holes in the lower part of the case through which hot air escapes.

It circulates in the room and provides it with the desired temperature.

What is the difference from the usual?

The main difference between parapet models and conventional boilers is the ability to obtain increased safety from a non-volatile design and no impact on the internal atmosphere of residential premises.

If a conventional atmospheric boiler consumes ambient air, actively burning oxygen and requiring constant ventilation, then parapet models are completely separate and do not disturb the air exchange regime.

Another difference is the ability to independently heat the air, making the parapet boiler similar to a stove.

Advantages and disadvantages

The advantages of parapet boilers include:

no electricity consumption;
no internal air is used, there is no additional load on the ventilation system;
there is no need to connect to a common chimney;
low fuel consumption;
efficiency, practicality, resistance to external loads.

installation requires making a hole in the wall from 25 to 31 cm in diameter;
installation is only possible near an external wall;
it is not possible to provide full-function control and protection of units and parts of the unit (for non-volatile models).

Despite the existing disadvantages, parapet boilers are highly rated by users. The demand for them is constantly growing.

Device

The design of the parapet unit almost completely replicates the design of any non-volatile boiler.

The coolant enters the primary (main) heat exchanger, where it receives a high temperature and enters a three-way valve (mixing unit). In it, colder “return” is mixed into the hot liquid, as a result of which the temperature of the heating agent takes on the parameters specified by the mode.

In double-circuit models, before entering the three-way tap, the coolant passes through a secondary heat exchanger, where DHW is prepared.

The difference lies in the structure of the combustion chamber and chimney, which are not typical for such devices. To exhaust smoke, a coaxial double pipe is used, through the outer cavity of which fresh air enters, and the inner cavity is a chimney.

Air is sucked into the closed combustion chamber and ensures the combustion process. When heated, it expands and displaces smoke and other gases produced when fuel is burned. Some models are equipped with two separate pipes, one of which supplies air and the other exhausts smoke.

This option allows you to enhance convection and stabilize the processes of gas movement.

Kinds

Exist different variants designs of parapet boilers, which can be divided according to specific characteristics.

By installation method:

wall-mounted Installed in a hinged manner on an external (load-bearing) wall. According to installation conditions, weight and power are limited;
floor Installed on the floor. If it is wooden, a non-flammable stand is required. There are no restrictions on weight, dimensions and power.

By power supply method:

volatile. The design contains components that require the use of electricity - a circulation pump. electronic control board, etc.;
non-volatile. They work only with mechanical control. A good choice for remote villages and areas with power outages.

By feature set:

single-circuit. Capable of only providing heating of the coolant;
double-circuit. In parallel with heating, the heating agents are capable of cooking hot water for household needs.

NOTE!

Most users prefer single-circuit floor-standing models, which demonstrate the greatest efficiency.

Principle of operation

The operation of a parapet boiler differs little from the usual operation of gas convection units.

The burner heats the coolant, which transfers part of the energy to prepare DHW or is discharged into the heating circuit after preparation in a three-way tap.

There are no changes in this. A specific feature is the ability of the boiler to perform the function of a convector, which makes it possible not to install radiators in the room where the unit is located.

In addition, a special method of air supply and smoke exhaust is used. When the burner is ignited, a fire occurs in the upper part of the combustion chamber. overpressure air, causing it to be expelled along with the smoke outside.

At the same time, a vacuum is formed in the lower part, creating a suction of fresh flow through the outer part of the coaxial pipe. A pressure difference arises similar to that used in conventional ovens.

This allows the use of a closed combustion chamber without a turbo fan.

In some designs, the chimney and air intake pipe are made separately, but this does not change the principle of operation.

Rating of TOP 5 parapet gas boilers

Parapet boilers do not have many of the disadvantages of wall-mounted models, so their range is constantly increasing.

Let's look at the most popular models:

Lemax Patriot-12.5

Floor-standing non-volatile parapet boiler domestic production. The power of the unit is 12.5 kW. This is suitable for rooms up to 125 square meters. m.

Main characteristics of the unit:

Efficiency - 87%;
gas consumption - 0.75 m3/hour;
dimensions - 595x740x360 mm;
weight - 50 kg.

The boiler is single-circuit, but it is possible to connect an external boiler. This will allow you to get a full-fledged hot water supply line.

Lemax Patriot-20

Floor-mounted parapet boiler produced by the Taganrog plant. The power of the unit is 20 kW, so the size of the room should not exceed 200 sq. m.

Only the basic task is performed - heating the coolant. If you need to expand the functionality, you should purchase and connect an external storage boiler.

Boiler parameters:

Efficiency - 87%;
coolant temperature - 80°;
system pressure - up to 2 Bar;
gas consumption - 1.2 m3/hour;
dimensions - 670x790x400 mm;
weight - 67 kg.

Users and experts note low fuel consumption, which increases the efficiency of the unit and allows for significant savings.

Lemax Patriot-16

Another example of domestic heating engineering. Parapet floor boiler 16 kW, intended for use in rooms up to 160 sq. m.

Like other models of the Patriot series, this is a single-circuit unit with a steel heat exchanger.

Its characteristics:

Efficiency - 87%;
coolant temperature - 80°;
system pressure - up to 2 Bar;
gas consumption - 0.95 m3/hour;
dimensions - 670x790x400 mm;
weight - 67 kg.

Units of the Patriot series with a power of 16 and 20 kW are the same design, only one of the models has artificially reduced performance.

Lemax Patriot-10

A product of engineers from Taganrog. A 10 kW parapet boiler is suitable for a country house or private house with an area of up to 100 square meters. m.

Efficiency - 87%;
coolant temperature - 80°;
system pressure - up to Bar;
gas consumption - 0.6 m3/hour;
dimensions - 595x740x360 mm;
weight - 50 kg.

NOTE!

Reliability and low fuel consumption make Lemax Patriot parapet boilers the most good choice for all users.

ATON Compact 12.5E

Gas parapet boiler made in Ukraine. The power of the model is 12.5 kW, and the service area is up to 160 sq. m. Non-volatile unit designed for floor mounting.

Main parameters of the boiler:

Efficiency - 90%;
coolant temperature - 90°;
system pressure - up to 1.5 Bar;
gas consumption - 1.39 m3/hour;
dimensions - 630x700x275 mm;
weight - 50 kg.

The unit is equipped with a heat exchanger made of of stainless steel, has a protective gas valve.

Reviews of parapet gas boilers

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Connection requirements gas equipment, 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 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 of the parapet gas equipment was designed in such a way as to prevent the combustion of oxygen from the room in which the boiler is installed. For this purpose, several design changes were introduced. As a result of the modifications, a gas-fired boiler was obtained, characterized by the following characteristics:

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?

The non-volatile parapet gas boiler is a closed type unit. Gas combustion and all other processes occur in a completely sealed closed combustion chamber. The main difference from classic units is several characteristics:

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 removal occur using a coaxial 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?

When choosing any model of heating boiler, focus on its heat specifications And additional functions. The performance of the unit, the possibility of heating water for domestic needs, as well as the plant that manufactures the heating equipment are taken into account:

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. For DHW connections, you will need to install an indirect heating boiler, 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 operating mode.
Manufacturer - the ranking of the most reliable boilers is led by German manufacturers, Austrian and Czech models follow immediately behind them. Domestic parapet gas boilers, with a closed combustion chamber, have an attractive price and good thermal characteristics.

Judging by the reviews, best manufacturers gas parapet heating boilers are European and Russian companies. Although the products of the latter are somewhat inferior to their European counterparts in terms of efficiency and degree of automation, they are fully adapted to domestic operating conditions and are sold at an affordable price. Models manufactured by factories located in neighboring countries are popular:

Domestic gas parapet boilers Russian production– Lemax, Hephaestus, Barsky Machine-Building Plant, Helios, Danko, Conord, HeatLine, Taganrog Gazoapparat,
Ukrainian parapet-type gas heating boilers for apartments and private houses - Termomax, ATON, Atem, Mimax, Termotechnik, Mayak, Dani, Proskurov, ROSS, Ochag.

The cost of parapet boilers from Ukrainian and Russian manufacturers is 2-3 times cheaper than their European counterparts.

How to install a parapet heating boiler

When installing a parapet boiler, the technical conditions and requirements that apply to the room where gas equipment, a connected chimney, etc. will be installed must be observed. The installation procedure and rules are stipulated in SNiP 31-02-2001, SNiP II-35-76, SNiP 42-01-2002 and SP 41-104-2000 DBN V.2.5-20-2001. Installation of parapet gas boilers in a private house is allowed or apartment multi-storey building. At the same time, 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

Installation restrictions stipulate the minimum dimensions and height of the room used for the needs of the boiler room. Additionally, requirements related to lighting, type of ventilation, etc. are described:

Parapet boilers up to 30 kW, can be installed indoors, with with total area 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 a working supply air 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

It is impossible to connect a parapet boiler to a traditional vertical chimney. Internal structure, makes it possible to connect exclusively a coaxial pipe. When simultaneously connecting several gas boilers at once, the use of a vertical coaxial chimney is allowed. Correct connection to a horizontal chimney must meet several requirements:

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

The pipe for removing combustion products through the wall is made of plastic or stainless steel. Low temperature exhaust gases, makes possible installation any type of chimney you like. Real experience has shown that it is more practical to install a coaxial pipe made of stainless steel.

How to protect a parapet boiler from the wind

Parapet models, installed properly, work almost flawlessly. Blowing out of the boiler indicates the presence of violations when connecting the chimney, incorrect automation settings and other problems. If the intensity of the shutdown is more than 1 time several times heating seasons, you will need to eliminate the source of the malfunction. 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 reduce 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.

Weaknesses and strengths of parapet-type boilers

Owner reviews about parapet gas heating boilers, allowed us to compile a small list of advantages and disadvantages of heating equipment of this type:

Disadvantages - parapet models have low power and are not designed for heating large areas. Boilers are suitable exclusively for heating small private houses and apartments. The equipment is sensitive to errors made during the installation of a coaxial chimney.
Pros - compact size and the ability to choose a boiler with the required connection side to the heating system. The models are distinguished by their low cost, energy efficiency and efficiency, ranging from 98-100%. Closed combustion chamber and absence negative influence on the microclimate of the heated room, reduce the requirements for their installation.

You can find out some of the pros and cons personally by examining reviews from customers with real operating experience. Judging by the technical characteristics, the advantages of parapet equipment are still greater, and the disadvantages are mainly associated with improper installation.

Parapet type boilers are economical, reliable and are very popular among domestic consumers.

avtonomnoeteplo.ru

How to choose a parapet type gas boiler?

Boiler structure
Main advantages
Choosing a gas boiler

Natural gas can safely be called the most popular and comfortable view fuel for use in autonomous heating systems of private houses, since, unlike coal, there is no need to worry about regular replenishment of supplies, you just need to connect to the local gas pipeline. That is why greatest number 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 gas quality, soft water And uninterruptible power supply. For this reason, they often failed and required regular maintenance. 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 positive traits 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 has 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 boiler design

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 into external 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, 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 simply installed 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 an individual heating system, parapet boilers have a relatively low cost, which makes them accessible to 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 visible place.

Choosing a gas boiler

Among themselves, parapet boilers, in addition to technical characteristics and power, can be economical and reliable.

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 (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’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.

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-hand and left-hand connections of the boiler to gas and water supply. There are also universal models that can be connected from any side.

Boilers come in different sizes, it all depends on the power

The power of the parapet boiler is no less than important characteristic 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 m2 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 premises. 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.

What do you need to know when choosing a gas convector?

klivent.biz

Parapet gas boilers: advantages and disadvantages

The parapet boiler takes up very little space

A compact parapet gas boiler is an excellent solution for country house, cottage, townhouse or city apartment. Its design allows you to avoid installing a gas duct, and does not require a significant area to accommodate the necessary equipment. And the closed type of combustion makes the use of such heating equipment absolutely safe even when installed in residential premises or kitchen space.

Like other types of boilers, this option is aimed both at working exclusively with the heating system and at additional connection hot water supply - in this case you need to choose a double-circuit model. Moreover, the device itself generates heat during operation and can be used as a convector in the room where it is installed. A parapet gas boiler can be non-volatile - with mechanical start and piezo ignition, or volatile - with automatic control. The second option is focused mainly on cottages and private houses. The first one is universal and can be used both in apartments and at individual residential construction sites.

Features and Specifications

Sectional wall-mounted parapet gas boiler (rear view)

Unlike many other models of heating equipment, a parapet gas boiler does not burn oxygen when generating heat, which is especially important in winter period. And its connection does not require laying complex communication systems- it is enough to have a wall suitable for arranging a hole intended for the output of a coaxial pipe. Through it, exhaust gases are removed and air is taken in.

The obvious advantage of this type of design is the wide selection of models with different types of mounting (floor-mounted, wall-mounted) - in this case, parapet gas boilers can be installed even in small rooms. And the availability of opportunities to connect to both main gas pipeline systems and gas cylinders, filled with a propane-butane mixture, allows them to be used even in those regions and areas where the central gas supply is absent or not well established.

The types of burners used in boiler equipment may also be different. Most models use single or two-level options. Parapet gas boilers are equipped with heat exchange elements made of copper, cast iron or steel; in double-circuit systems, the additional coil is almost always copper.

The power of boiler equipment is one of its main parameters. Most household models are capable of delivering performance up to 16 kW. It is worth considering that 1 kW of heating system power can provide heat to approximately 10 m2 of the area of a house or apartment. And for dual-circuit models, power indicators should be calculated with an increase of 30%. Efficiency also matters - here you should not be content with little, the higher it is, the lower the fuel consumption will be.

Advantages of parapet gas heating systems

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

Due to the peculiarities of its design, a parapet boiler is a completely adequate alternative to electric or main heating systems in apartment buildings, and when installed on the territory of a private residential property, it copes with heating an area of up to 160 m2 (with the appropriate equipment power). In addition, it has a number of very obvious advantages that make the use of gas equipment even more attractive:

Affordable: the cheapest models with a small power reserve cost just over 10,000 rubles, the most powerful - up to 100,000.
Installation is possible in any room with external walls - from storage rooms and hallways to living rooms, kitchens and living rooms.
Flow-through water heating (in dual-circuit models) allows for a productivity of up to 180 l/hour, and is adapted for output to 4 water intake points. In this way, you can avoid installing a storage tank, which significantly increases the area occupied by heating equipment and does not create difficulties with the seasonal use of hot water supply.
Economical - costs gas heating always lower than wood or electric, with similar efficiency.
Safe - built-in control systems, both in mechanical and automatic equipment, ensure that the gas supply is stopped in the event of emergency situations. And the sealed housing of the combustion chamber prevents combustion products from entering living spaces - they are quickly discharged outside through a coaxial pipe.
Demonstrates a high heating rate of coolants and is undemanding to the quality of water in pipes and supplied gas.
None Additional requirements for seasonal use.

Of course, these are not the only advantages that a parapet boiler has. But it also has some features that require separate consideration. For example, to legally install such equipment in a house or apartment, you need to obtain approval from the gas service and draw up a connection project (if we're talking about on main gas supply) to the source of energy supply. If connected to bottled gas, it is also better to install and connect the parapet boiler under the supervision of specialists.

How is the chimney constructed?

Parapet boilers are equipped with coaxial-type chimneys, but can also be connected to existing pipes leading to the roof of the house. In this case, air is taken in for the operation of the system directly in the house, through ventilation grilles. But this connection option is the exception rather than the rule. In most cases, chimneys are installed directly in the wall near which the equipment is installed. And the pipe brought out through a hole in the supporting structure of the building has a double structure, in which combustion products are discharged through the internal chimney smaller diameter, and air from the street is supplied through the external circuit, providing the necessary flow of oxygen into the system. Such parapet boilers are completely autonomous, and the installation of a chimney to them can be done both in a vertical and horizontal plane.

Parapet gas boiler: design and principle of operation

Connection and operation

Parapet boilers need to meet certain operational requirements. In particular, they cannot be mounted directly to the wall without providing it with additional thermal protection from steel sheets or plates. You should not place objects that pose an increased fire hazard in close proximity (at a distance of less than 30 cm) to gas boiler equipment. These include curtains and drapes, upholstered furniture, polymer decorative designs.

The minimum distance from the wall at which installation is possible is 30 cm, the maximum is 2.5 m. Thus, parapet boilers can be installed in almost any room - from boiler rooms and storage rooms to living rooms. Wall-mounted models are attached directly to the wall surface, and are usually characterized by low power - they are most often chosen for organizing autonomous heating in apartments or townhouses.

The lack of natural ventilation in the room is a direct contraindication to installing a parapet-type heating system. Air circulation in space, even when it comes to the operation of closed systems, is important in ensuring safety.

When choosing a location for the chimney, it is better to give preference to the section of the wall located under the window opening. In this case, maintenance or dismantling will be much easier. The chimney pipe should be installed at an angle to ensure condensate drainage. And wind protection should be installed on the outer edge of the pipe, otherwise the flame in the burner may go out if there are strong gusts.

Present on the heating systems market a wide range of gas boilers. Manufacturers, related sales companies, advertise different models, includingparapet gas boiler.

Sometimes it is difficult to know which type of equipment to choose. To do this, you need to have a general understanding of what systems gas heating there are premises, what criteria should be taken into account in this matter.

Types of gas heating equipment

Equipment is classified according to the type of exhaust gas product removal and combustion chamber types. Let's look at the main types of boilers.

Chimney boilers

For their operation, a special upright chimney and air flow are required. This system has an open combustion chamber that draws air from the room. For this reason, a constant influx of fresh air masses is needed, that is, supply and exhaust ventilation. These types of boilers are quite simple in design and affordable. They are used for heating private houses, but it is necessary to place the equipment in a separate furnace room.

Prices for chimney boilers

chimney boilers

Turbocharged systems

These boilers are equipped with a closed gas combustion chamber, so they do not use the air masses of the room.

A distinctive feature of the equipment is the presence of a turbine, which performs the function forced fan to remove combustion products, that is, carbon monoxide.

Their advantage is that the turbine rotation speed is regulated depending on the gas pressure. Consequently, the necessary pressure inside the chamber is ensured, which increases the efficiency of the boiler.

Atmospheric air enters through coaxial chimney. It is a pipe, inside of which there is another air outlet of a smaller diameter. Atmospheric air enters through the larger radius, and combustion products are discharged through the smaller radius. The chimney is attached to a through hole in the wall. The release of air masses occurs forcibly, using a turbine.

This type of boiler is equipped with electric ignition, that is, it requires connection to the electrical network. They are more expensive compared to chimney boilers.

Parapet boilers

This type of equipment differs from turbocharged systems in that the entry and exit of air masses occurs naturally, without forced ventilation.

The similarity with turbine boilers is that they are equipped with a coaxial chimney and a closed combustion chamber.

Prices for parapet boilers

parapet boiler

Advantages and disadvantages of parapet boilers

The design of turbine and parapet boilers is similar, but the latter have a number of advantages.

Parapet boilers: pros and cons.TO positive aspects worth mentioning:

Autonomy – n It does not require connection to the electrical network, since ignition occurs using piezoelectric elements (sparks), which are controlled electronically. A battery is used for power supply. The equipment can operate either from a source of constant gas supply or from a cylinder.
Ease of installation and maintenance - t Urbine systems are quite complex to set up and operate. They contain various kinds of sensors and controllers. Parapet boilers are simpler.
Versatility – m You can connect the equipment to a radiator system, but the boiler itself can become a source of heat (through convection windows). Suitable for heating small houses and apartments. There are wall-mounted and floor-mounted models. Their compact dimensions allow them to be installed in any convenient location, subject to certain operating conditions.
A closed combustion chamber does not take oxygen from the room - e To summarize, a parapet boiler is a simplified version of turbine equipment, while maintaining quality characteristics, at an affordable price.

Experts also note certain disadvantages. Unlike turbo systems, air is forced into the pipe naturally, so the inlet pressure is lower. To improve functionality, parapet boilers are installed with built-in circulation pumps, which are connected to an electricity source, or they are battery-powered. Sometimes, in severe frosts, the outlet pipe may freeze.

What are the types of parapet boilers?

Ease of installation and control, versatility, combined with a fairly low cost, have made these boiler models quite popular among the population.

Types of boilers according to different indicators and criteria:

Single-circuit parapet gas boilersand double-circuit. The first ones have one circuit, only for heating. The second are two circuits: for heating and water heating.
The place where they are installed: parapet floor-mounted gas heating boilers,wall-mounted The floor can be placed under the window, in the kitchen, or in another convenient place of non-permanent residence.
Equipment is distinguished according to the output of pipes for connection to heat carriers: left-handed, right-handed.
Wide power range. Depending on the heated area, you can choose equipment with a power from 7 to 60 W. They make a calculation (on average): 1 W per 10-15 sq. m. This run-up is explained by heat loss from walls, windows, as well as the climatic conditions of the region. The greater the heat loss, the greater the boiler power required. If, for example, you need to installwall parapet gas boiler,It is better to invite a specialist for consultation who will make the calculations. It is also necessary to insulate the walls as much as possible and replace conventional windows with energy-saving ones.
Methods for removing combustion products may be different. In private houses it is possible to use conventional chimneys with good draft. But first you need to decide which type of equipment is better,parapet or chimney boiler.Then, as in apartments, only a coaxial chimney is possible.
Pressurized burners in boilers come in different types (single-stage, two-stage, modeling).
They vary according to the heat source. Heating comes directly from the boiler, through convection holes. In most cases, the equipment is connected to radiator-type devices. This could be a pipe that runs around the perimeter of the house.
An important role, especially for country houses, autonomy from power supply plays a role. It is better if the boiler ignition is battery powered. In this case, the heat supply will not depend on power outages.

Models have different configurations with controllers, including:

flame sensor, automatically turns off the gas if the flame goes out;
the thermostat regulates the water temperature and turns off the system if t rises to critical;
the blocking system is triggered when the pressure drops critically or the gas is turned off;
traction controller.

These various parameters allow you to choose the optimal model for heating the room.

Construction of gas equipment and principle of operation

Parapet boiler, what is it?, How does it work. Design features depend on power, number of circuits and other parameters.

Device

Main elements of the boiler:

Protective housing, casing inside it. There are convection holes on their surfaces. Thanks to their presence, a radiator is not installed in the room where the boiler is located.
Gas burner design unit (ignition, gas valve, burners).
Heat exchangers . Double-circuit parapet gas boiler has two types of heat exchangers: one, more voluminous, for heating; the other is for heating water.
The combustion chamber itself is a closed, sealed type.
The chimney is coaxial or a straight pipe (installation is possible only in private houses).
Circular pump, controllers, sensors.

Operating principle of a parapet gas boiler

With the help of a piezoelectric element, the pilot burner is ignited; it is in working order while the boiler is operating.

Then the gas supply valve opens and the linear burners are lit. Warm flows emanating from the main burners heat the heat exchangers. They are made from metals that do not corrode, for example, copper, cast iron. Its thickness should be optimal for the strength of the structure, but at the same time, the element should have time to warm up and give off heat (on average 3-4 mm).

Water passes through the walls of the heat exchanger, it heats up, and then supplies heat to radiators of various types.

When the set temperature is reached, the main burners are switched off. The pilot plant is in standby mode. If the sensor shows a temperature drop below the set mode, the linear burners light up and a new heating cycle begins.

Air is supplied through the coaxial chimney to maintain gas combustion and remove combustion products, as well as condensate.with two circuits, the heat of the exhaust gases is additionally used, which increases its performance.

A circular pump stimulates the movement of coolants through the system. It is relevant for the operation of fairly long heating mains.

Do-it-yourself installation of a parapet gas boiler

It is necessary to begin the installation of heating equipment by carefully studying the instructions and safety rules described in it. It must also be remembered that the commissioning of the boiler is approved by gas services. If you installed the boiler yourself, then involve specialists in consultation to complete the correct installation.

The process takes place in several stages.

Installation conditions

First, choose the optimal location for installing the boiler, in accordance with existing standards.

The equipment is installed only in premises that are classified as non-residential (kitchen, hall, utility rooms).

The outlet for the chimney pipe must be located on an external surface that is resistant to fire. In most models, it comes with a metal casing. It is attached directly around the diameter of the pipe outlet on the outer wall. If there are elements on the chimney outlet wall that can ignite when heated, then the distance to them should be at least 20-35 cm.

It is prohibited to install the exhaust chimney near the supply ventilation intakes (distance from 60 cm - for low-power boilers; up to 1.5 meters - for equipment with a power of over 7 W). If the inlet ventilation and chimney are located close together, exhaust gases may enter the supply ventilation ducts.

Periodically, the chimney will need cleaning, so it would be more correct to place it in a place where it can be accessed, for example, under a window.

For the first floors it is preferable mounted installation boiler, approximately at a height of 2-2.2 meters.

Indoors, flammable surfaces must not be placed closer than 30 cm around the boiler ( cushioned furniture, curtains, tulle).

There must be access to the system from all sides, at least one meter.

Important!Failure to comply with these requirements may result in gas services prohibiting the boiler from being put into operation.

Boiler installation

You will need the following tools: a diamond drill for making a hole in the wall, boiler fasteners, a level, caps ( shut-off valve), adjustable wrench.

DIY parapet boiler installationrequires certain practical skills.

Sequencing:

First, a hole is punched in the wall, the size of the outer diameter of the chimney. For this purpose, special diamond drills with a diameter of 240-270 mm are used.
Then the outer contour of the coaxial pipe is installed.The chimney is installed at an angle of 4-5 mm to allow condensation to drain.
Next, fasteners for the mounted boiler are screwed in and markings are made for the floor section.
Install a water supply system and gas outlet.
Fixed internal pipe chimney.
Install the boiler, connect the water and gas connections to it, and the heating system pipes.

Attention!All connections must be installed as correctly as possible, correct fit and maximum compatibility of all joints must be monitored.

The last stage will be the control start-up of the boiler. It is more correct to carry it out in the presence of a specialist. Make sure that the flame is even, there is a special viewing window for this. Check to see if the gas has leaked or water has leaked at the joints.

Most common problems

Parapet floor-standing gas boiler, like the wall one, it can sometimes fade.

The most common reasons:

Icing of the external chimney unit. In this case, the access and removal of air is disrupted. It is recommended to try starting the boiler at minimum power and try to warm it up in this way. Or carefully knock off the ice.
When using boilers of all types, it is advisable to install water purification filters. If it is hard enough, the heat exchanger system may clog. In this case, you need to disconnect it and clean it.
When there is a strong gusty wind, sometimes its gusts enter the exhaust chimney (backdraft), which leads to the flame being blown out.
The fire may go out if there is insufficient gas pressure. The cause must be eliminated; there may be a leak.
Failure of various sensors and controllers. Replacement or repair of boiler parts is required.

If it is difficult to determine the cause on your own, there is not enough knowledge or experience, it would be more correct to invite a specialist to repair it.

Rating of the best manufacturers

Imported parapet gas boilers.Among them, it is worth highlighting equipment with cast iron heat exchangers, their advantage is reliability, with a power of 12 to 60 W. They will be able to heat larger houses and apartments. Distinctive feature This kind of heat exchangers is their resistance to temperature changes and mechanical deformation. Thus, the Electrolux company produces equipment that can withstand critical temperatures above 90 degrees.

It should be noted quality products such companies: Italian – Fondital, Beretta; Slovak – Alphatherm Beta, Attack; Hungarian - Alphatherm Delta.

Russian parapet gas boilers.Domestic manufacturers often use components from the CIS and EU countries to manufacture equipment. These are cast iron heat exchangers, sensors, controllers. Thus, while maintaining quality characteristics, the final cost is reduced to approximately 15%.

This type of product includes: Titan N boilers (Ryazan company Gaztekhprom CJSC); Lemax Leader GGU-ch (Taganrog); Siberia KCHGO (ZAO Rostovgazoapparat). These models are distinguished by a wide range of equipment power. Manufacturers offer single-circuit and double-circuit boilers of various types.

It is worth noting the high-quality products of Russian companies Helios, Danko, Conord.

We can conclude that parapet gas boilers are universal equipment for heating a home, which combines high quality indicators (efficiency 93-95%) and optimal prices. They compare favorably with chimney models with an open gas chamber in that they do not require a separate room for a boiler room. At the same time, compared to turbocharged models, it is easier to operate. The advantage of this type of equipment is its independence from the power supply system. This makes it possible to install the boiler in areas where there is a risk of power outages.

One way to organize an economical and very effective system for heating a house and heating hot water for domestic purposes is parapet gas boilers. It is worth buying such equipment even if the device is needed not for a private home, but for a city apartment. Such wide scope use is determined by 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 done in the most convenient place. They can be either hung on a vertical plane or conveniently placed on the floor. An indispensable condition is to place the device near an external wall, so the chimney must be positioned horizontally and pass through the wall opening to the street.

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

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

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

single-stage,
two-stage,
modulated.

Operating modes are also different. There are devices only for heating, but there are models capable of preparing hot water to meet economic and domestic needs.

The units are equipped with heat exchangers made of cast iron, copper and steel. Each type has its own pros and cons and should be selected based on operating conditions. To ignite 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 of application due to the absence of the need for additional structures;
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 parapets 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 installation details, obtain a positive decision and seal the equipment.

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 operation, they need constant pressure, soft water, high quality gas, as well as an 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 operational requirements and are able to ensure stable operation of the 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 emitting combustion products into the external environment. 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 necessary. 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 in the outer 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 a fairly wide range of models, which allows consumers to choose the 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 lineup presented in options that may have one or two contours. 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 housing has 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 the Thermo parapet boiler, then optimal options protrude 3 mm. 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. With more high level pressure 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 determining the efficiency factor. 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 the equipment, because different rooms may differ in the level of insulation. A fairly significant technical characteristic should include the size and 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, which point to 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 traditional pipe, which passes 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

IN parapet boilers there may be 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 by a flow-through heater, which is usually copper. U of this material 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.

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