The presence of central heating in the apartment is, of course, convenient, since the owners "do not have a headache" in this regard. But, unfortunately, it is not always practical, since the temperature in the rooms begins to directly depend on the thermal regime established in the common boiler room. In addition, such a system is not immune from emergencies that may occur in any area. her length, as a result of which the entire house is often turned off from heating. A lot of difficulties also arise during the periods of the "off-season", when early cold snaps are ahead of planned the beginning of the heating season, or, conversely, the batteries are heated when the weather is too warm outside.

Despite violations of temperature regimes and temporary shutdowns of the house from heating, payment for it remains unchanged, which absolutely not beneficial ordinary users. Therefore, in last years the trend is gaining momentum when more and more apartment owners in high-rise buildings resort to installing autonomous heating systems.

Those who decide to “separate” usually have numerous questions related to the various nuances of this procedure. Therefore, it will be further considered individual heating in apartment building- necessary documents and installation rules for him.

Advantages and disadvantages of autonomous heating in an apartment

Before deciding on such a radical replacement, it is necessary to evaluate all the pros and cons of an individual heating system.

So, advantages availability autonomous system heating are as follows:

• Possibility of heating the apartment in the off-season, when the central system is not yet turned on or already turned off, in accordance with established regional regulations based on temperature environment, at these times of the year - very unstable and with large daily fluctuations.
• The ability to maintain the required temperature in the rooms, which is much more difficult to organize with central heating, since it does not take into account the location of the apartment and the degree of its insulation. Probably, it is not necessary to explain that the apartments located inside the house, and the corner ones, and even substituted for the prevailing winter winds, still require a differentiated approach to heating. However, to balance consumption spending, payment for warmth is charged in the same way, usually based on the area of ​​​​the apartment.

Therefore, by installing autonomous heating in apartments, you can and should immediately take into account the specifics of the location of the rooms, getting a comfortable microclimate in any of them, and considerable savings in money.

• Autonomous heating can be easily adjusted to individual operating modes. For example, it makes no sense to drown "to the fullest" if in this moment all residents are absent. It would be more logical to only maintain the required level of heating. But by the time the owners arrive, the automation will “catch up” with heat so that the rooms have optimum temperature.

Many modern systems management, in addition, are able to independently respond to changing weather conditions. They can also be controlled remotely using GSM or IP communication channels.

• A reduction in operating costs will also occur due to significantly lower energy consumption, since modern gas or electric equipment is designed for optimal energy consumption - they have high efficiency rates approaching 100 percent.
• When installing, it is quite possible to refuse from the central hot water supply system, providing your family with hot water autonomously. This means that an apartment equipped with such a unit will not depend on hot water maintenance during the summer, and there will always be hot water in it.

• Another category of advantages is the fact that you have to pay for central heating in the summer, as it requires constant maintenance. By installing an autonomous heating option, payments will be made only by gas (or electric) meter, that is, it will be possible to directly control energy consumption and the cost of heating and hot water supply, analyze and find ways to further save.

However, there are considerable difficulties in transferring an apartment to individual heating, and they can be attributed to shortcomings its arrangement:

• All work must be carried out legally and in compliance with all the requirements necessary for this process. Unauthorized reconstruction, firstly, will not save you from paying utility bills for heating and hot water supply. And secondly, it also threatens with a serious administrative punishment in the form of a rather large fine.
• There will be difficulties associated with the preparation of documentation for disconnection from central communications, the development of a project, as well as obtaining permission to install equipment.
• It will be necessary to allocate or equip a room with a proper ventilation system for the installation of a heating unit.
• Installation of the system refers to the work of a rather high category of complexity.
• Considerable costs will be required, both in the preparation of documents and in the acquisition of everything necessary for the arrangement autonomous heating and DHW. And this is without taking into account the installation work.
• All responsibility for carrying out operational and preventive measures, as well as for the safety of the system, lies entirely with the owner of the apartment. At the same time, it should be borne in mind that all the named processes related to autonomous heating will be controlled by the relevant specialized organizations, whose representatives the owner of the apartment will have to provide access to the installed equipment.

However, even taking into account all the upcoming difficulties and significant initial costs, an autonomous heating system is in all respects much more profitable than central heating and hot water. In practice, it will quickly pay for itself and will serve reliably for many years.

A package of necessary documents for "autonomization"

In order to organize autonomous heating in an apartment, you will have to do some redevelopment, and this, as you know, is a fairly labour intensive. At the same time, it should be taken into account that the issuance of permits can take from three to five months, and installation work- about a week. In this regard, the preparation process must begin in advance.

Preliminary approvals and obtaining permits

So, the first step is to decide on the documents that will be required in order to start developing a project, purchasing equipment, and then installing an autonomous system. The list of documents approved by Art. 26 of the Housing Code of the Russian Federation "The basis for the reconstruction and (or) redevelopment of residential premises."

Any reorganization of the residential premises is carried out taking into account the established requirements and in agreement with the local authorities. For approval, it is necessary to collect a package of documents, which includes standard constitutive documents for the ownership of this housing, which include the following:

• Application-petition for the reconstruction of housing. The application form is standard and approved by the Government of the Russian Federation.
• Certificate of State registration of the right to own an apartment - this may be the right of inheritance or an agreement on the transfer of housing ownership. You will need a copy of the document certified by a notary.
• Technical passport for the apartment - a photocopy certified by a notary.
• The project of the redevelopment of the apartment, made in accordance with the established form.
• A certified copy of the document, which indicates all the persons registered in the apartment.
• Consent for reconstruction heating system from all tenants. This document is drawn up on one sheet, which lists all the persons living in the apartment, and then they put down their signatures, confirming their consent.
• A document from an organization for the protection of architectural monuments, if the house where the reconstruction is planned belongs to the category of architectural monuments.

The applicant should remember that self-government bodies do not have the right to demand other documents that are not provided for in this article. After accepting the package with documentation for consideration, the applicant must be issued a receipt of receipt, with a list of accepted documents.

Consideration and decision on consent or refusal should be carried out no later than through 45 days from the date of submission of documentation. The document developed by the commission must be issued to the applicant no later than 3rd working days after the decision.

According to the norms and rules for the technical operation of housing, which are approved by the State Construction Committee of Russia No. 170 of 27. 09.03. , a refusal to re-plan or re-arrange the residential premises may follow if these actions worsen the living conditions of all or individual residents of the building where the applicant's apartment is located.

However, that's not all. The list of documents indicates a redevelopment project, which must be approved by the controlling organizations of gas and heat supply, since permission must be obtained to disconnect from the central heating system and install gas equipment. And after obtaining such permits, a project for redevelopment and installation of an autonomous system is drawn up, which must be agreed with the relevant authorities.

Therefore, it is necessary to prepare all the above documents, since they will have to be presented in all organizations that directly affect the drafting of the project. Documentation is done in the following order:

• The first organization you need to contact is the city or district heating networks. It is there that they give permission to turn off the heating circuit of the apartment from the central heating system. Consent can be issued if the shutdown does not lead to disruption of the engineering equipment of nearby apartments or the entire house as a whole. In principle, there can be no other reasons for refusal.

If an unreasonable refusal is received from this organization, then this is a reason to apply to the courts. It should be noted that sometimes an application for disconnection is submitted through the self-government organization of the housing stock.

• Then, with the letter of consent received, you must contact the gas service of the district or city for technical specifications for the installation of autonomous heating. This document must be issued within 10 days from the date of the applicant's application.
• After receiving the technical specifications, taking all the documentation for the apartment, you can go to the design or energy organization that draws up such projects. If the boiler was purchased before the project was drawn up, and it meets all the requirements for installation in an apartment of a multi-storey building, then in design organization you should provide documentation for it. The project will be prepared taking into account the technical conditions provided.

Most of the requirements imposed by regulatory organizations, including the gas service, are spelled out in the document "Heating, ventilation and air conditioning" clause 6.2 "Individual heat supply systems" SNiP 41 - 01-2003.

To free yourself from going to all instances, you can entrust the design and coordination of all required documents design organization. In some regions of Russia, this function is taken over by the gas service. Naturally, all this extra work carried out for a fee.

Autonomous heating project

Separately, it must be said about the project for the reconstruction of heating. First of all, before contacting the specialists who will perform the design work, you need to carefully study specifications used in the preparation of the project, and it is desirable to draw up a preliminary sketch of the approximate location of the heating elements.

Its exact location can be determined after specialists study the plan of the apartment, which is in the technical passport.

So, the project is a necessary document when carrying out any reconstruction of a dwelling. Based on it, a new heating circuit and a heating boiler will be installed. How correctly and accurately this document will be drawn up, and then, according to it, the equipment will be installed, how efficiently it will work.

The project includes data on external and internal factors that determine the type of heating:

• The climatic conditions of the region in which the house is located.
• Engineering specifications buildings.
• Available energy carriers on which the heating system can operate.
• Technical characteristics of heated housing - the number of rooms, the presence of loggias, as well as the area and volume of the premises.
• The financial side of the issue.

Based on these data, not only the installation location of the heating unit is selected, but also its type, as well as power.

To make heating efficient and economical, it is recommended to entrust the development of its project to specialists. This stage is best handled by energy companies that themselves control or interact with organizations approving the heating sector, with whom the project will subsequently be coordinated, which will accurately ensure the correctness of its preparation, and hence approval.

To get a positive result and an optimal technical solution, the customer must work closely with the organization that develops the project. In the process of creating a project, several options are usually considered. The customer chooses the one that suits him the most, after which the technical parameters of the unit and all the necessary equipment are determined. The project is being developed in several stages:

• If the customer did not provide his own version of the sketch, then work begins with it.
• A heating circuit diagram is being developed, on the basis of which the system will be installed.
• Documentation for the designed heating system is being prepared.
• An estimate is being made.

If this work is entrusted to professionals, then at each specific stage of project development, specialists in the field of heat supply, ventilation, architecture, and energy supply will participate in it.

The project consists of several parts, which present certain data from different aspects of the project:

• Descriptive part gives information about the content and significance of the project. This section of the document, in turn, is divided into several paragraphs, where the following technical data is located:

- the location of the apartment or house, if it is planned to mount it in the private sector;

- the location of residential premises and features of the layout.

In the descriptive section of the document, the data on the technical characteristics of the premises are specified, taking into account their location and the climatic features of the region where the building is located. This description is necessary in order to determine the types and types of heating equipment. This information will subsequently be used to carry out calculations and determine the power that the heating system should have, as well as the temperature parameters in the apartment.

• Technological calculations - this is the main part of the project, which summarizes the parameters of the volume of the required energy carrier when the unit is operating in different modes, as well as the optimal temperature of the coolant, which provides the necessary heating of the apartment's rooms. It is especially important to determine the power of the heating and hot water supply boiler, since on the basis of these calculations, equipment and accessories for it are selected.

In the same part, heat losses during space heating are calculated, on the basis of which it will be possible to draw conclusions about the efficiency of the system.

The calculated parameters will also show how appropriate this or that wiring and the type of connection of radiators to the system circuit. The calculations also include the use of automatic control devices in the heating system.

Further, all the data obtained is necessarily reflected in the scheme of the heating system, which will become a guide for the installers during the work. Deviations from the scheme developed by specialists and approved can lead to a failure to put the system into operation, which is allowed by the selection committee.

• Specification . This section contains data on the main materials and elements of the heating system, and their main technical characteristics. This part of the project also includes a diagram of the heating system with marked nodes and devices listed in the list.

This information is key to calculating the hydrostatics of the system, as well as the required heating temperature. If these calculations are carried out incorrectly, then the system will be inefficient, and the gas flow will be exceeded.

• Graphic image - this is an important section of the project, which visually represents how the overall design of the heating system will look like. This part of the project is carried out with the help of special computer programs, most often in three-dimensional projection.

When submitting an application for the development of a project, it is necessary to clarify for specialists the reasons for switching to an autonomous type of heating. The more justifications there are, the more accurate the calculations will be, since specialists will know what to pay special attention to when carrying out them.

A copy of the project documents must be submitted to the gas company, which will continue to service the installed equipment.

Gas boiler for autonomous heating of an apartment

When drawing up a project, experts will offer options for boilers that can be used for installation in an individual apartment heating system. However, you need to independently study some information related to the choice of the unit.

First of all, it is worth referring to Decree of the Government of the Russian Federation No. 307, paragraph 44 of 16. 04.12. , which considers the connection of heat supply systems. This resolution provides a list of heat and power devices that do not meet the established requirements, and therefore are prohibited for installation in apartments of multi-storey buildings. After studying this document, it will be possible to immediately decide which devices of which designs cannot be installed in an autonomous heating system of an apartment.

So, the list of boilers that can be used in apartments of multi-storey buildings includes units that operate on natural gas and meet the following requirements:

• Having a closed (sealed) combustion chamber.
• Mandatory availability of automatic shutdown of the fuel supply in the event of a power outage, extinction of the burner flame, if there are malfunctions in the protection circuit, with insufficient pressure inside the system, which may fall below the limit value, when the coolant is heated above the limit temperature, as well as in case of malfunctions in the flue system .
• With an allowable coolant temperature in the system not higher than 95˚.
• The coolant pressure is not more than 1 MPa.

In addition, boilers are single-circuit, used only for heating an apartment, and double-circuit, designed for both heating and water heating. When applying and collecting documents, this factor should also be indicated. This is due to the fact that the heating networks must give consent to disconnect the apartment not only from heating, but also from the hot water system.

Next, you need to decide on the design of the heating unit, as it can be wall or floor. For installation in a modern apartment, the wall-mounted version of gas equipment is most often chosen, since such boilers are compact in size and quite aesthetic design, reminiscent in appearance. Since the chimney from the heating boiler must go outside, it will be convenient to place it on outer wall, with this installation there will be no problems with the location of the pipe in the room. As a rule, there is a window on the outer wall, which will solve the problems with the ventilation of the room. Usually, the power of a wall-mounted boiler is sufficient to heat a standard apartment with proper wall insulation and the presence of euro windows with double-glazed windows.

Rooms in the apartment where a gas boiler can be installed

Separately, a few words must be said about the room for installing a gas boiler, since it cannot be placed in any room, according to the preference of the owners.

The room for the placement of gas heating equipment must meet certain safety requirements, which include the following:

• Cannot be installed gas equipment in a residential area.
• The area of ​​the room should not be less than 4 square meters.
• The entrance door to the room with the installed boiler must be at least 800 mm wide.
• The room should be equipped with a window facing the street.
• The boiler is mounted on the wall or installed on the floor, at a distance, which must be at least 300 mm from other gas equipment, such as a gas stove.
• Indoors, it is necessary to find the possibility of output to the street, that is, through the wall. The outlet of the pipe into the general house ventilation duct is not allowed.
• Some heating units require forced ventilation in the room, that is, you will have to install an exhaust fan on the window. This will be specified in the specifications.
• A wall-mounted boiler must be fixed to a wall built of non-combustible material, and for a floor boiler it is necessary to make fire-resistant flooring, for example, lay ceramic floor tiles.

Without fulfilling these requirements, the commission signing the acceptance certificate will not give its consent to the commissioning of an autonomous heating system.

Based on the characteristics of the room, we can conclude that the unit can be installed in the kitchen or in a pre-insulated loggia combined with it. Since the gas boiler is tied to the main energy supply pipeline, which is connected to the kitchen room of the apartment, it is this one that is optimal for the location of the heating unit.

In addition, the kitchen is necessarily equipped with a window facing the street and a door of the required width. And, besides, a general house ventilation channel is connected to it, which is also necessary for placing an apartment "boiler room".

How to choose a gas heating boiler?

In order for the purchased boiler to fully meet the to its parameters of the created system heating, was reliable and easy to use, it is necessary to be guided by a number of criteria for evaluating such equipment when purchasing. - read in a separate publication of our portal.

Autonomous electric heating

The arrangement of electric heating is much simpler than gas heating. If only because there is a wider choice of where to install the boiler or other equipment, since the power supply is distributed throughout the apartments, and ventilation and exhaust systems for combustion products are not required.

When planning the installation of electric heating, first of all, you need to consult the Energonadzor institution (or similar organization). It is necessary to check the availability of resources in the house for the allocation of additional energy. If a written consent is received in this organization, then with it and with a request to disconnect the apartment from the centralized heat supply, it is necessary to contact the heating network service.

The list of other documentation should be clarified with the energy company and with self-government bodies. The fact is that when installing electric heating in different regions of the country, the requirements for its installation can vary significantly. The only thing to note is that the number of documents and approvals will be much less compared to the gas option for heating an apartment.

Thanks to modern technologies today you can choose one of two options for electric heating. One involves the use of a heating unit with a conventional piping for the circulation of the coolant. The second involves direct heating by separately installed devices or systems - electric convectors, infrared heaters, "" systems.

Heating using an electric boiler

The system using a coolant, that is, piping and radiators remain in place. But they are connected to an electric heating boiler, and the coolant will be heated from it, and not from the central heating main.

Most modern models of electric heating units are equipped with automatic control. Therefore, the system can be programmed in such a way that the heating of the premises to the required temperature indicators will not occur constantly, but only at the time set by the owners. You can save a lot on this function, for example, using a nightly reduced rate for “charging” heat accumulator.

On sale are wall electric boilers, which can have a power of 5 ÷ 60 kW, as well as floor options, their power exceeds 60 kW.

Which one to choose, experts will tell you when submitting documents for drafting an electric heating system, in which there will be a diagram of its arrangement. The choice of the boiler will depend on the area and location of the apartment in the house, the degree of its insulation, the number of windows and balconies, as well as the frame material. Usually, when choosing the power of the boiler, they rely on the established technological standards, that is, 1 kW of electricity per 10 "squares" of area.

We must not lose sight of the fact that if a unit with a power exceeding 9 kW is purchased, then there will be a need to re-equip the apartment electrical network and install a three-phase meter. If it is planned to install a heating boiler of a larger capacity, then before purchasing it, it is necessary to consult and obtain written permission from the local energy company.

It should be borne in mind that household electric boilers are not designed for a large number of radiators, respectively, their installation is optimal for heating small areas, up to 80 - 90 m². In addition to the boiler, "warm floor" systems can be used, which consume electricity quite economically.

Electrical units operate according to a standard automatic heating system. The coolant (water or antifreeze) is heated, passing through the boiler, and then enters the heating circuit with radiators installed in it. Passing this path, the coolant cools down and returns to the boiler for heating, etc. In order for the circulation to be more intense and the radiators to warm up faster, a circulation pump.

Electric boiler, unlike gas equipment, can be installed in any utility room where it is convenient to draw a power line, and from where it will be easier to carry out the general wiring of the heating circuit pipes. Most often, a kitchen or a bathroom is also chosen for this. But sometimes it is also mounted in the corridor, sinking the wiring of the circuit pipes into the wall surfaces.

What is an electric heating boiler?

The variety of such devices is quite large, and, not only in terms of size, power and other operational parameters, but even in terms of the principle of heating. Read more about this in a special article on our portal dedicated to.

Direct space heating with electrical appliances

Heating using separate electrical appliances or underfloor heating, which can be combined or operated separately, is called a direct heating system.

This option is preferable to choose if there is a desire to get rid of numerous pipes and volumetric radiators, since, for example, electric convectors have a more aesthetic appearance and compact size. The "warm floor" system can be cable rod or film - but in any case, it is generally invisible to the eye.

When combining individual devices in single system, it is possible to connect it to a common control unit, with the help of which the temperature regimes are set by time of day and by day of the week, taking into account the daily routine of the family.

When choosing any type of electric heating, for safety reasons, it is necessary to provide grounding, without which a permit to put the system into operation will not be issued.

The advantage of electric heating is that it is safer than gas heating. And compared to central system, it can be easily and very accurately adjusted to the required temperature.

The main disadvantage of the electrical system is that in the event of a power outage, the apartment will be left not only without lighting, but also without heating. Therefore, if in a particular locality this phenomenon is repeated with frightening constancy, then it is better to opt for autonomous gas heating of an apartment. In addition, the obvious "minuses" include very high tariffs for electricity.

Features of the arrangement of electric heating are the observance of certain conditions that are not provided for the gas version of heating. So, experts recommend:

• Conduct for electric heating system from distribution shield a separate power cable, which stabilizes the load on the general house electrical network.
• RCD systems are installed today in all apartments of new buildings equipped with autonomous electric heating. If it is not there, then you will have to attend to the acquisition of such a block. This - reliable protection against electric shock when it leaks to the instrument case.
• It is highly desirable to install a two-tariff meter, which will help save money if the heat supply to the premises takes place during preferential hours.

Devices and systems for direct space heating - what to choose?

The variety of such devices is extremely wide. With you can get acquainted in a special article of the portal. Another publication will describe in detail the varieties and specific features various systems.

Installation of an autonomous heating system

Disconnecting the apartment from the central heating and hot water supply lines, as well as installing a gas and electric boiler, is carried out only by specialists from energy companies who have a special documented permit to carry out such work.

Such rules have been introduced to comply with all safety conditions both during installation and during the operation of the equipment. We must not forget that in an apartment building there are many neighboring apartments with people in them. Don't put your life and theirs in danger.

You can take on the laying of pipes and the arrangement of heating radiators, the installation of other necessary elements of the system. But even then, only if there is good skills in carrying out such operations.

In this publication, dwelling on the installation order does not make much sense. The fact is that with all the details it is set out in a special article of the portal.

The nuances of installing a water heating system

Whether a gas boiler is installed, or an electric one, otherwise the wiring of the pipe circuit, the installation of radiators, additional appliances and parts are almost the same. How it is carried out in a house or apartment - to the appropriate detailed instructions the recommended link will take you.

Before deciding to abandon centralized heating and hot water supply, it is necessary to weigh all the positive and negative aspects of autonomous heating of the apartment. And only after such a comparison and a thoughtful analysis - to start collecting documents.

One more small clarification. It may also happen that, having disconnected the apartment from heat supply and hot water supply, you still have to pay for general house heating. But these amounts will be quite miserable, compared to those that were indicated on a monthly basis in the payment order earlier.

And in conclusion - a short video that will also help weigh all the "pros" and "contras" of an autonomous heating system in an apartment

Video: Advantages and disadvantages of an autonomous apartment heating system

If you want to equip an apartment with individual heating using a gas boiler, you should not rush to buy equipment, since it is not always possible to make such heating. There are many restrictions. The fact is that not all apartment buildings are designed to use a gas boiler in an apartment instead of central heating.

In the case of living in a high-rise building, where apartment heating is not provided, it is difficult, and often unrealistic, to implement such a solution. If the house does not have such an opportunity, then an attempt to obtain permission can be made in the event of its reconstruction, if there is a decision to disconnect the building from centralized heating and transfer to apartment heating.

In such a situation, technical conditions for the transition are developed for the entire building and they are issued to all property owners in their hands. To find out if it is possible to install a gas boiler in an apartment, you should fill out an appropriate application and submit it to the Gorgaz branch that serves the area, and get a response.

Checklist of necessary actions

If it became known that the installation of individual heating is allowed in the house, a long walk through the authorities cannot be avoided:

• First of all, you need to go to the local organization responsible for the supply of gas and write an application there regarding the installation of a gas boiler in the apartment. After a certain time, the homeowner is issued a conclusion regarding the permission or prohibition to install a heating unit. Receiving a positive response means that you can install the equipment.
• Next, you need a project. It should be ordered from the design office that has the right to this type of work. His address can be obtained from the gas supply company. At this stage, it is advisable to choose a boiler model and a meter. Under them, project documentation should be drawn up, and the data should be indicated in the specification. The fact is that changes after approval can only be made later, and for a fee. If the project is signed, nothing can be changed in it, you need to order a new one.
• The fire authorities should find out the address and name of the organization that checks the condition of the ventilation ducts and agree with its specialists about the service. A company representative will come and check the quality of ventilation. If everything is in order, a permit will be issued to install a gas boiler in the apartment. In the event of an unsatisfactory condition of the chimney, an act is drawn up with a list of work to be performed. After eliminating the shortcomings, you need to re-invite a specialist in order to eventually get permission.
• At the next stage, an application for refusal from heating is submitted to the heating network. If you plan to heat the water yourself, you should also refuse hot water supply. It is advisable to immediately clarify the timing of the shutdown measures. The rework project approved by Gorgaz should already be in hand.

• Data regarding the purchased meter and boiler are reported to the design organization. Then the finished documentation is taken. It is not worth purchasing equipment in advance, since it is not always possible to obtain permission to install a gas boiler in an apartment building.
• Then, a service agreement for the unit is concluded in the Gorgaz branch, and the gasification project is submitted for approval.
• After receiving the signed project in hand, you can proceed to disconnect from the heating network. In this case, it will be necessary to drain the water from the heating system of the entire house.
• Next, the owner of the apartment must mount an individual heating system. The boiler is installed without connecting to the gas main, the system is checked for tightness and readiness for operation.
• In "Gorgaz" find out the date when you can install a gas boiler in an apartment building in a particular apartment. Its employees will connect pipes and equipment according to the project, seal the meter, put the stove and unit into operation.
• In order for the guarantee for the gas boiler to be valid, it will be necessary to set up and carry out the first start-up, followed by a note in the passport. Regarding this type of work, contact the department where the device was serviced. The master will adjust the boiler, start the system and put a stamp in the passport. Now you can use the mounted equipment.

The entire process described above, subject to the requirements for installing a gas boiler in an apartment building, will take from 1.5 to 2.5 months. Therefore, it is advisable to start the procedure in the spring or at the very beginning of summer.

Rules for the installation of gas appliances in the apartment

The least problems with the arrangement of individual heating occur among the owners of new apartments that are not connected to a centralized heating system. In this case, there is no need to visit the heating network and there is no need to deal with disconnecting from the risers, but permission to mount gas heating in an apartment building, may be in the package of documents for real estate.

But in this case, you need to follow certain rules. First of all, having documents in hand, you cannot install gas equipment on your own - this work should be done by specialists. These can be not only employees of a gas supply organization, but also representatives of a company that licenses this type of activity.

After the installation is completed, the engineer of the company supplying gaseous fuels will check the correctness of the connection and issue a permit to use the boiler. Only then can you open the valve leading to the apartment.

Before starting, in accordance with the requirements for installing a boiler in an apartment building, it is imperative to check the individual heat supply system. To do this, it is launched under a pressure equal to at least 1.8 atmospheres. You can control this parameter using the pressure gauge of the heating unit.

If the pipes are built into the floor or walls, it is advisable to increase the pressure and drive the coolant through them for at least 24 hours. Only after testing the system can you be sure that there are no leaks and reliable connections.

Air must be bled from the equipment before start-up. Since when installing a gas boiler in an apartment building, the systems are made closed, you need to use the Mayevsky taps available on the radiators. Air is bled in each battery, bypassing them several times in turn until there is no air left in them. After that, the system can be launched into operating mode - turn on the heat supply.

We should not forget that modern units are controlled by automation, and such devices are demanding on voltage. Therefore, the use of a voltage stabilizer and an uninterruptible power supply is recommended. To protect the boiler from deposits accumulating on its inner surface, at the points of fuel inlet and cold water filters need to be installed.

It is necessary to place an electrical outlet and another gas appliance at a distance of at least 30 centimeters from the unit.

Arrangement of a room for a boiler

It is best to install a wall-mounted gas appliance in a kitchen, the layout of which meets the standards for the placement of such equipment. Also in this room there is already a supply of both water and gas.

Here's what the norms for installing a gas boiler in an apartment look like:

1. The area of ​​the room where the installation of equipment is planned, when the ceilings in it are not lower than 2.5 meters, must exceed four square meters.
2. It is mandatory to have a window that opens. Its area should be 0.3 square meters. m. per 10 cubic meters of volume. For example, the dimensions of the room are 3x3 meters with a ceiling height of 2.5 meters. The volume will be 3x3 x2.5 = 22.5 m 3. This means that the area at the window cannot be less than 22.5: 10 x 0.3 \u003d 0.675 square meters. m. This parameter for a standard window is 1.2x0.8 \u003d 0.96 square meters. m. It will do, but the presence of a transom or window is required.
3. Width front door cannot be less than 80 centimeters.
4. There must be ventilation holes located under the ceiling.

In the documents attached to the product, each manufacturer describes the requirements for installing a gas boiler in an apartment. For the manufacturer's warranty to be valid, the unit must be installed in accordance with their recommendations.

The list of requirements is as follows:

1. wall boiler separated from the walls with non-combustible material. When they are tiled or covered with a layer of plaster, this will be enough. Do not hang the appliance directly on a surface lined with wood.
2. floor unit placed on a non-flammable base. If the floor has ceramic tile or it is concrete, nothing needs to be done. A sheet of heat-insulating material should be placed on a wooden floor covering, and a metal sheet should be fixed on top of it, the size of which exceeds the dimensions of the boiler by 30 centimeters.

Requirements for the arrangement of the chimney

When is the installation in the apartment apartment building gas boiler of any type, the chimney must not be made narrower than its outlet. If the device has an open combustion chamber and a power of not more than 30 kW, the cross section of the chimney pipe cannot be less than 140 millimeters, and with a capacity of 40 kW - 160 millimeters in diameter.

If the boiler has a closed combustion chamber, it is provided with a coaxial chimney with a cross section recommended by the manufacturer.

• the pipe going up from the wall-mounted gas unit must be at least 50 centimeters long, and then only the elbow can be installed;
• over the entire length of the chimneys, more than three bends cannot be created;
• combustion products from appliances with open combustion chambers are removed into the chimney, and with closed ones - also into the chimney or through the wall directly to the street (the method depends on the project).

Choosing a gas boiler

Before you put the boiler in the apartment, you need to do optimal choice. In a multi-storey building, wall and floor boilers can be installed. Wall models are considered more aesthetic and convenient in terms of placement. Their dimensions are comparable to the dimensions of kitchen wall cabinets and therefore they fit well into the interior of the room.

With the installation of floor units it will be more difficult, since they can not always be pushed close to the wall. This nuance depends on the location of the smoke outlet. If it is on top, then the device, if desired, is moved to the wall.

Boilers also come in single and double circuit. The first of them work only for heat supply, and the second - for heating and water heating. When other equipment is used for DHW, then a single-circuit model will suffice.

If the water is heated by a gas boiler, then you will have to choose one of two methods: an indirect heating boiler or a flow coil. Both options have drawbacks. When a coil is used, which means flow heating is carried out, not all units are able to maintain the set temperature.

For this reason, it is necessary to set special operating modes in boilers; they are called differently in different devices. For example, in Navien models (read about Navien boiler malfunctions), Beretta is “hot water priority”, and in Ferrolli it is “comfort”.

The disadvantage of boiler heating is that gaseous fuel is consumed to maintain a stable water temperature in the tank. In addition, the reserve of heated water is limited. After its consumption, you have to wait until the new portion heats up.

The choice of the above methods is an individual matter, but you need to remember that with the flow option, you will have to focus on the water heating capacity per minute, and with the boiler, on the volume of the tank.

Gas units differ in the type of burner used, which are:

• single position;
• on-off;
• modulated.

The cheapest are single-position, but at the same time they are the most uneconomical, because they always work at full capacity. Slightly more economical - on-off, which are able to function both at 100% power and at 50%. The best burners are considered modulating, as they have many operating modes, which saves fuel. Their performance is controlled automatically.

The burner is located in the combustion chamber, which can be open or closed. Oxygen for open chambers comes from the room, and combustion products are removed through an atmospheric chimney.

Closed chambers are equipped with a coaxial chimney structure, and oxygen for combustion enters them from the street. In this case, combustion products are discharged along the central contour of the chimney, and air enters through the outer one.

Floor units are equipped with an inflatable or atmospheric burner. When a floor model boiler is installed in an apartment building, it is allowed to use an atmospheric burner in the apartment. Most of these gas appliances have a closed combustion chamber, which means they are equipped with a turbine and a coaxial chimney.

Boiler power calculation

When the type of heating unit is selected, it is necessary to determine its power. If desired, you can order a heat engineering calculation that allows you to determine the heat loss in the premises. Based on this figure, they begin to select the power of the boiler.

You can not make calculations, but use the norms obtained empirically, according to which 1 kW of boiler power is needed for 10 "squares" of area. To this result should be added the performance margin for various losses.

For example, to heat an apartment with an area of ​​​​60 "squares", you need a device with a capacity of 6 kW. If water heating is planned, add 50% and get 9 kW of power, and in case of abnormally cold weather another 20-30%. The final result is 12 kW.

But this is a calculation for central Russia. If locality located to the north, it is necessary to further increase the performance of the unit. The specific value depends on the degree of insulation of the house. For a panel or brick high-rise building, this will be 50% or more.

The boiler must have sufficient power to ensure comfort in the apartment, so you should not save on it. The cost difference won't be big. If an automated boiler is purchased, then there will be no excess gas consumption, since such models of units are the most economical.

The process of obtaining permission related to whether it is possible to install a gas boiler in an apartment is quite complicated, costly and takes a lot of time. But all the effort is worth it, because it is much better to live with comfortable temperature in the premises. At the same time, you will have to pay less for individual heating than for centralized heating.

Reading time: 5 minutes

Heating is one of the most expensive and often the least quality public service for residents of an apartment building. Despite the astronomical amounts on receipts, not all apartment buildings have a temperature in a dwelling during the heating season that meets the established standards. That's why everything more people think about abandoning the centralized service and switching to individual gas heating in the apartment. To fulfill such a desire is quite realistic, but for this you need to make efforts in collecting documents for the reconstruction of housing and passing through all instances.

Heating a city apartment: features and problems

The traditional centralized heating system in most apartment buildings, as a rule, functions according to the same principle, but differs in the way the coolant is supplied. Each of these principles has its pros and cons:

• dependent. Heat enters the individual radiators directly from the CHP without additional distribution, the temperature is maintained without the inclusion of a thermal unit in the process;
• independent. From the central boiler house, heat is supplied to the MKD heating unit and distributed to the apartments with the possibility of additional adjustment of the hot water temperature using circular pumps.

There are two types of systems - open and closed. The type of connection is one- and two-pipe. With such a heat supply scheme, even under the conditions of the standard temperature of the coolant, at the initial stage, poor permeability may occur due to the formation of an air lock or clogging of pipes.

Similar problems do not arise if gas heating is installed in an apartment building.

It should also be remembered that almost the entire housing stock of the Russian Federation was built in the last century according to various building codes and regulations. When installing new heating, differences in SNiPs, according to which equipment and equipment were installed (materials, methods of connecting elements, etc.), will no longer be the cause of cold batteries.

Advantages of gas heating systems

Heating in private houses and apartments of MKD can be carried out using gas. This type of heating is reliable and inexpensive to operate. Heating is carried out by gas, which is transported through pipelines, or at the expense of bottled fuel.

Gas individual heating in the apartment can only be arranged by connecting the boiler to the main pipeline. Bottled gas is not used for heating apartments in MKD.

The undoubted advantages of gas heating include economic efficiency and cleanliness.

Another advantage is automatic temperature control if an individual boiler using gas is installed.

Modern systems have high tightness and reliable protection that prevents gas contamination of the surrounding air by turning off the gas supply if its content reaches 0.4%.

Autonomous heating in the apartment

Deciding to improve efficiency and reduce heating costs, apartment building owners are wondering if it is possible to install a gas boiler in an apartment with central heating. Replacing centralized heating with an autonomous circuit is a feasible task, the only obstacle to which may be improper operating conditions for a gas boiler.

The main condition for installing a gas boiler in an apartment is the presence of a special chimney.

An obstacle to installation may be low pressure in the gas pipeline network, designed only for kitchen gas stoves. In this situation, connecting a boiler can further reduce the pressure in the system. Therefore, it is desirable to install equipment equipped with a closed combustion chamber with a coaxial chimney.

The choice of model depends on the specific needs of the owner.

Find out more about what conditions you need to meet in order to get permission for.

What you need to install a gas boiler in an apartment

Before finally abandoning centralized heating, you should study the requirements of legislative and regulatory documents. In accordance with Part 1 of Art. 25 of the Housing Code of the Russian Federation and clause 1.7.1 of the Rules and Regulations for the technical operation of the housing stock, approved by the Decree of the State Committee of the Russian Federation for Construction and Housing and Communal Complex of September 27, 2003 No. 170, replacing heating equipment and heating an apartment using a gas boiler is a reconstruction residential premises.

According to Part 1 of Art. 26 of the Housing Code of the Russian Federation, such events should be carried out in compliance with legislative norms in agreement with the local government and on the basis of its decision.

The first step will be to obtain an opinion from the gas supply organization on the technical feasibility of installing autonomous gas heating in the apartment in a particular MKD. Then you need to write an application for refusing the service to the heat supply organization, having previously ordered a rework project from Gorgaz.

In order to refuse the central heating service and switch to individual, it is necessary to collect a package of documents, which includes:

• application for reorganization;
• title documents for residential premises (originals or notarized copies);
• registration certificate for the premises;
• written consent of all family members;
• residential renovation project
• the conclusion of the body for the protection of architectural monuments, confirming the possibility of reorganization.

After receiving the project documentation, you need to sign an act fire safety project at the local branch of the All-Russian Volunteer Fire Society (VDPO).

The next stage is the coordination of documentation in the administration. The decision on approval/refusal is made within 45 calendar days.

In case of failure to provide the necessary documents, the refusal to reorganize the premises may be motivated by Art. 27 LCD RF. The applicant has the right to challenge the negative answer in court.

The nuances of the device of the gas heating system

A heating gas boiler is a device that heats the coolant by burning gas. The equipment is usually equipped with:

• heat-insulated housing;
• hydraulic block;
• heat exchanger;
• gas burner;
• control and safety devices.

Depending on the type of gas boiler, the scheme for connecting heating batteries to the boiler will differ.

Gas boilers are floor and wall, and heating systems are single-circuit and double-circuit. The latter are more common and more common in apartment buildings.

Using the example of a two-circuit system device, you can familiarize yourself with the set of equipment and the sequence of its connection.



Rules for installing gas equipment in an apartment

Before you install a gas boiler in an apartment, you should make sure that all the requirements for the equipment itself, the room where it is planned to be installed, and the installation method are met. The main conditions should include:

• installation exclusively by a specialized installation organization;
• departure to the installation site of a gas service engineer before opening the gas valve leading to the boiler. The employee will check the correct connection of the equipment and issue an appropriate conclusion.

The boiler is connected according to the operating and installation instructions. When installing, you should take into account the features of the room where it will be located, as well as the location of the gas boiler.

The principle of choosing a gas boiler

When selecting the unit, the economic, sanitary and technical indicators of the device, as well as the thermal regime of the premises, are taken into account.

Reliable and safe operation of the heating system depends on the correct calculation of the boiler power. The calculation includes:

• building heat loss;
• coefficients that take into account possible adverse conditions and the climatic zone of the area.

The main differences between gas boilers are their power. According to this indicator, they are divided into devices:

• high power - up to 15,000 kW;
• medium power - up to 1,700 kW;
• low power - from 4 to 65 kW.

When choosing, it must be taken into account that the wall gas boilers have low power, and outdoor - medium and large.

Boiler installation features

Each type of gas boilers has its own installation algorithm, however, during installation there are 2 general conditions: the dimensions of the room and its purpose.

The height of the room in which the boiler is installed must be at least 2.5 m, and the area must be at least 15 m3. Existence of ventilation and an extract - obligatory requirements.

It is forbidden to install gas equipment in the bathroom, toilet and living rooms.

The system is pre-pressurized to P=1.8 atm, and then de-aired. After that, all elements of the connections are checked for tightness.

The installation of a voltage stabilizer is mandatory and the installation of an uninterruptible power supply is highly desirable. This is necessary for the stable operation of electronic control elements.

The first start-up precedes the filling of the system with water. To do this, the device must be turned off. To avoid the formation of air bubbles, the heating system should be filled with water gradually.

Installation of any gas equipment should be carried out at a temperature of +5 to +35 degrees. In frost, such work is not carried out.

conclusions

To replace centralized heating in an MKD with an autonomous one, you need to obtain permission from the authorized bodies, order a housing reconstruction project and install gas equipment in accordance with legislative and technical standards. Before you make gas heating in an apartment building, you should make sure that its installation in a dwelling is possible and complies sanitary standards and security conditions.

Lawyer. Member of the Chamber of Advocates of St. Petersburg. Experience more than 10 years. Graduated from St. Petersburg State University. I specialize in civil, family, housing, land law.

The page contains basic information about a gas boiler for heating an apartment: types, advantages of double-circuit and wall-mounted ones, as well as how to choose for autonomous, individual heating in an apartment building.

Today, few people can be surprised by the presence of individual heating in an apartment, since many developers are building multi-storey buildings with the ability to connect an alternative heat source.

Living in houses where there is no such service, residents can also make their choice in favor of freedom and independence from utilities.

The most popular type of heating is a double-circuit wall-mounted gas boiler for heating an apartment, and there are reasons for this.

Gas boiler for heating an apartment: advantages

Except for the difficulties in designing permits to switch to individual heating, otherwise it is a great opportunity to provide your home with real warmth at an affordable price.

Of the thermal systems that exist on the domestic market, the most popular can be distinguished:

1. A gas boiler in an apartment instead of central heating is considered the most the best option. It is difficult to say how much a gas boiler costs for heating an apartment, this is due to the cost of its kits, which include all components and elements, and the price of gas.
2. Electric boilers are also popular, but this option you need to choose a really economical model, as the tariffs for light are constantly rising.
3. Underfloor heating systems have long won the hearts of many consumers, and since new types of heat sources are constantly appearing in this niche, interest in them will never disappear.

Of all the listed types of boilers for autonomous heating of an apartment, gas boilers are recognized as the most popular.

The reason for this is their advantages:

For individual heating in an apartment, boilers are completely safe, and even if gas pressure drops in the system, no one will be harmed by this.

To create a truly warm atmosphere in the apartment, you should choose from a huge number of boilers the one that will work optimally for a particular room.

Types of boilers

Often consumers wonder how to choose gas boilers for heating an apartment in an apartment building. The answer is simple - learn how they work.

On the market, gas boilers for heating an apartment building are represented by two types of units:

Units with a closed chamber are recognized as safer, as they do not allow combustion waste to enter the room, they are more durable and easy to install. The only drawback of such boilers is the rather high cost, but it is fully justified.

Procedure before installation

Before choosing any model of a gas boiler for heating an apartment, you need to take into account some of the nuances:

After fulfilling all the above conditions, you can proceed with the installation of a gas boiler. It is better if the masters who have the right to do this will do it, but you can do all the installation work yourself.

If you can mount the unit with your own hands, then representatives of the gas company should connect it. If all the work is carried out in secret, then, in the end, it will become known, which will entail a serious punishment with the complete dismantling of the system.

Be sure to visit other pages of our site.

The ideal gas boiler for a small apartment should be: with a modulating burner, power 1 kW / 10m, condensing, with a built-in boiler. In this article I will explain why I have such an opinion and whether it is realistic to find a unit with similar characteristics for a price not half a carton.

I will not write what a single-circuit and double-circuit boiler is, about the advantages of a particular heat exchanger, about the differences between wall and floor models, about standard and condensing boilers. I'll try to go especially important nuances choosing a boiler specifically for a small apartment, according to the most interesting and more or less affordable models.

Choosing a boiler for a small apartment

For an apartment, there are certain "iron" criteria for selecting a boiler. The gas boiler must be with a closed combustion chamber (turbo). But how many circuits should be in your boiler is a matter of taste. A detailed analysis of the types of boilers was in the article. I'll just explain my IMHO.

Single loop or double loop?

Everywhere and everywhere I read about how convenient a double-circuit boiler is - it heats, and it heats the water in a flow, and the size is small and beautiful. In theory, this is true, but in practice - hot water starts flowing from your tap after 30-40 seconds, you can’t rinse an apple in the kitchen and you can’t wash your hands hot. For the sake of hot water, you have to take a boiler with too high power (the exception is boilers with a modulating burner or stepped power).

The required power is calculated very simply- 1 kW per 10 m. My forty-meter apartment needs 4 kW, but taking into account heat loss (until the balcony is glazed) - let it be 6-7 kW. I have 24 kW without the ability to adjust the power (Nova Florida Vela Compact CTFS 24, far from the cheapest boiler). All these kilowatts go to hot water, which must be opened with maximum pressure in order to at least have time to rinse your hands with warm water at the end of washing - this is a water consumption that simply does not make sense to close, since the boiler will terribly drive the burner. In addition, the 24 kW burner lubricates to the fullest, and at 35 degrees of coolant, the boiler clicks literally every 30 seconds. I don’t like double-circuit boilers, and I wrote about their shortcomings and alternatives in an article.

But, in fairness, I should note several technical improvements that make double-circuit boilers a more expensive and attractive choice:

• Modulating burner
• Built-in weather control
• Condensation
• Built-in boiler
• Hot water preheating.

I will dwell on some of these features in more detail.

Modulating burner

Simulated burner, or gas burner modulation - the ability to gradually reduce and increase power depending on the needs of the room. The presence of a modulating burner is indicated by the power range, for example 9-24 kW. Since the boiler constantly cycles (on-off) at medium temperatures, gas flashes at full power quickly wear out parts, overuse gas, and this constant clatter is annoying.

A modulating burner works like this: when the switch-off temperature approaches, the electronics sends a command to reduce the gas supply to the gas valve, the burning time increases and the boiler cycles less. Such burners work in conjunction with an external atmospheric sensor.

There are also two and three stage burners with mechanical gas valve control.

Boilers with a modulating burner, which you should pay attention to:

1. BAXI ECO COMPACT 18Fi($ 500) - 18kW, copper heat exchanger, continuous flame modulation for both heating and hot water supply, pressure gauge, heated floors, built-in weather-dependent automation and a bunch of other goodies.
2. Immergas EOLO Mythos 24-2E($ 560) - 23.6 kW, stainless steel heat exchanger, modulating burner, auto-diagnostics, Antifreeze system, simple thermostat connection.
3. Vaillant ecoTEC pro VUW INT 236/5-3($ 1200) - a condensing boiler, 19.7 kW for heating and 23 kW for hot water, a stainless steel heat exchanger, a two-stage pump, a modulating burner with a range of 28%, electronic sensors for everything, a chic look.
4. Viessmann Vitopend 100-W 23 kW WH1D256($ 650) - 23 kW, modulated atmospheric burner, built-in weather-compensated control function, self-diagnosis, frost protection system, boiler pump blocking protection, heat exchanger thermal inertia removal system, electronic system boiler operation safety, manometer.

Built-in boiler

Built-in boiler solves the problem of temperature fluctuations due to unstable water pressure, burner cycle, it becomes possible to use water wisely. The volumes of the built-in boiler from 30 to 100 liters for mounted models fully satisfy the needs of a small apartment and a family of 2-3 people. The water tank is located in close proximity to the firebox, this is a functional and economical solution.

If the water in the boiler runs out, the flow mode works. The built-in boiler allows you to comfortably use hot water at 2-3 points of water intake. It is especially important that the burner is not affected by the pressure of the water in the system, as with flow-through use - those who have encountered underpressure of water on the floors will understand what I mean without further ado. Gas boilers with a built-in boiler are much cheaper than with a separately mounted indirect heating boiler and do not take up half the kitchen.

Gas boilers with a built-in boiler, which you should pay attention to:

Immergas ZEUS 24 kW($850) - 24 kW, copper heat exchanger, 45 liter boiler, electronic ignition and electronic flame modulation; antibacterial protection of the boiler, self-diagnosis with LED indication; protection against jamming of the circulation pump.
BAXI NUVOLA 3 140 Fi BS($ 1000) - 14 kW, copper heat exchanger, 30 liter boiler, heated floor, flame control, thermostat against overheating of water in the heat exchanger. A very good option for a 1-2-room apartment and a small family.
Westen Boyler Digit 240/60Fi($ 1300) - 24.4 kW, cast iron heat exchanger, 60/40 liter stainless steel boiler, built-in weather-compensated automation, 2 temperature conditions, antifreeze system.
Chaffoteaux Niagara C Green 25 NG($ 1500) - 23.5 kW, stainless steel heat exchanger, 45 liter boiler, modulation mode from 25%, modulated pump, simplified connection of external devices, built-in weather-dependent operation.
Viessmann Vitopend 111 24 kW WHSB047($ 1400) - 24 kW, 46 liter boiler, primary monothermal heat exchanger, plate heat exchanger for hot water, stainless steel stratified storage boiler, two-speed heating circuit circulation pump with integrated deaerator, storage boiler loading pump, two-stage AC fan current, modulating burner, built-in weather-compensated regulation, self-diagnosis.

However, for myself, I will consider a single-circuit option paired with an electric boiler. He gave his calculations of the consumption of gas and electricity using examples in a previous article.

Single-circuit gas boilers you can more accurately select the power for your area than double-circuit ones. Their filling is simpler, so much less breakdowns are fixed. One of the advantages of one circuit and a separately arranged hot water supply is that in the event of a breakdown, you will not stay in a cold apartment with ice water flowing from the tap. Practice shows that the fewer functions a device has, the more reliable its design.

In single-circuit models, domestic boilers are quite popular: Mayak, Atem, Danko. Although most of the reviews and discussions go to boilers in private homes, our boilers are praised for adapting to low-quality gas and hard coolant, for cast-iron heat exchangers. In addition, almost all domestic boilers are equipped with SIT, Honeywell, Kape, Polidoro automation; English, German and Italian burners. But I will not pay attention to individual models of domestic gas boilers - there are too few live reviews of use in apartments.

Models of single-circuit boilers that you should pay attention to:

1. BAXI LUNA PLATINUM 1.12GA($ 1250) - 12.4 kW, condensing, stainless steel heat exchanger, the ability to control solar collectors, a circulation pump with full modulation, etc.
2. BAXI ECO FOUR 1.140Fi($580) - 14 kW, copper heat exchanger, modulating burner, smooth electronic ignition, high-speed energy-saving circulation pump with built-in automatic air vent, pressure gauge, etc.
3. Vaillant turboTEC plus VU INT 202/3-5 H($ 800) - 6.8-20 kW, copper heat exchanger, the ability to tune to partial power, built-in circulation pump with automatic stage switching, status monitoring and troubleshooting on the display using the diagnostic system (DIA-System).
4. Viessmann Vitodens 200-W 19 kW($ 2200) - 19 kW, stainless steel heat exchanger, MatriX modulating cylindrical burner, Lambda Pro Control combustion controller built into the burner automatically optimizes the combustion process for various kinds gas, Vitotronic controller with text and graphic display.
5. Westen Pulsar D 1.140Fi($550) - 14 kW, cast iron heat exchanger, stainless steel secondary heat exchanger, with LCD display, electronic self-diagnosis system and built-in weather-compensated automation, can operate in two temperature conditions, and etc.

If I missed any nuances or was wrong, you are welcome in the comments, I will definitely supplement the material. I hope that buying a gas boiler for an apartment will not be a headache for you.