Installation of wall-mounted heating boilers. Installation instructions for a gas boiler: when is independence acceptable? Connection diagram for a wall-mounted gas boiler

You have purchased a new gas boiler for your private home and it’s time to take its place in the furnace room. To do this, you can hire a specialized company or contact the appropriate service. But the cost of installation in this case will significantly hit your wallet, while there is an opportunity to reduce the cost of the process. Yes, some operations can only be performed by licensed organizations, but this is only half the work; the rest can be handled independently. Here we will talk about how to install a gas boiler in a private house from start to finish.

Where to begin?

Since the installation of new gas-using equipment requires compliance with certain rules, it is worth ordering all work that requires a license from the gas service:

Issuance of technical specifications.
Development of project documentation.
Work on connecting to the natural gas pipeline.

You can complete the rest of the steps yourself. First you need to get gas from the service technical specifications for installation gas equipment. Check them out or make a copy and immediately order project documentation from them. When it is ready, it will need to be approved by the gas service. As you might guess, this procedure is a pure formality; after its completion, a team will come to your home and install the gas boiler in terms of its connection to the fuel line, about which a corresponding report will be drawn up.

All that remains for you to do is to complete the piping and connection to the heating system and laying electrical networks. Here you will have the opportunity to save money, either by doing everything yourself or with the help of familiar plumbers. Final stage– final paperwork.

It's just short description one of the possible algorithms for solving the problem, but in fact, not everything is so simple, because gas boilers must be installed in compliance with regulatory requirements; it would not hurt to become familiar with them at the stage of choosing a heat generator.

Requirements for boiler installation

First of all, it is necessary to take into account all the requirements for the room where the heat source is supposed to be placed. The options are:

kitchen;
a room inside the house, adjacent to one of the external walls and having windows;
premises in the basement or basement;
in the outer annex.

In the kitchen, installation standards allow the installation of a floor-mounted or wall-mounted unit with a heating capacity of up to 60 kW. Equipment with ratings from 60 to 150 kW can be installed in a separate room on any floor, and from 150 to 350 kW - only on the first or ground floor, in the basement or outbuilding. At the same time, it is important to observe the dimensions of a separate room or an attached part; they cannot be smaller than specified in the standards. The minimum standard height of such a room is 2.5 m for any power within the specified limits.

Note. The thermal power values specified in the standards and affecting the installation conditions of the boiler are the total power of all units in the boiler room, including those working for the needs of domestic hot water.

For heat generators with a capacity of up to 150 kW, in accordance with the standards, the smallest volume of the room for installing a gas boiler is 15 m3, in addition, for each kW of water heating equipment, 0.2 m3 is added to this volume. If the total indicator of all units exceeds 150 kW, then the dimensions of the room are not standardized. But there are rules for the installation and safe operation of boilers, according to which it is necessary to maintain technological gaps between the units and the walls of the room; they are adopted for reasons of ease of maintenance and access to all systems in the boiler room. The dimensions of the passages in accordance with the rules are as follows:

From the protruding part of the gas burner device to the wall on the front side of the heat generator - at least 1 m.
If the operating instructions for the unit say that it needs to be serviced from the side or rear, then you will have to maintain a passage width of 1.5 m, but when there is no such entry, but you need to provide access to other equipment or fittings, then it is enough to make the clearance 700 mm. In other cases, installation requirements are stated in the product documents from the manufacturer.
If you plan to install 2 heat sources in the furnace room, then you should not place them opposite each other, since you will have to provide a clearance of at least 2 m between the protruding parts of the burners.
Nothing should be laid through passages at a height lower than 2 m.

For a kitchen where it is allowed to place not very powerful heating equipment (up to 60 kW), there are not the most stringent requirements for the installation of gas boilers. You just need to comply with the volume standard given above, and also ensure air exchange in the amount of 3 times in 1 hour. Additionally required to submit supply air for fuel combustion, its consumption for each unit is indicated in technical specifications. This standard applies to all types of boiler houses.

Note. For heat generators with closed camera installation standards for gas boilers do not force supply air mixture for combustion, since they take air directly from the street through coaxial chimney, which will be discussed below.

The regulatory documents propose organizing ventilation for the boiler in the kitchen using an exhaust shaft and a supply grille built into the front door. The flow area of this grid is also standardized; its area cannot be less than 0.025 m2. In the same way, you can arrange air exchange in individual combustion chambers. Feeding difficulties fresh air may occur in basements or basement floors, it is possible that to comply with technical conditions it will be necessary to install a special supply fan.

In boiler rooms located on the first, ground floor or in an extension, window openings with a glazing area of at least 0.03 m2 are needed for each cubic meter of room volume. The attached premises also have requirements for fire resistance of walls, a separate foundation and entrance doors. In addition, the extension cannot be built on the front facade of the building, and during construction it is necessary to retreat 1 m horizontally from the nearest window or door.

It should be noted that the requirements for a gas boiler located in a wooden house are identical to the standards for buildings made of other materials, that is, the rules for installing boiler rooms are the same for all buildings.

Installation work for boiler installation

When a suitable room has been selected and work has been done for it project documentation, you can begin to install the heat generator in place yourself. To do this, you will need a connection diagram for a gas boiler in a private house, which must be present in the project. It shows the installation location, the distance to all enclosing structures and the technical requirements for the work.

Often, the installation of floor-standing gas boilers requires the construction of a foundation. In many cases it is not needed, for example, when the room is arranged high-quality screed, and the weight of the unit does not exceed 50 kg. If the weight of the equipment is greater than this value, then you will have to prepare the foundation. To do this, you need to destroy the existing screed, pour a cushion of crushed stone and compact it thoroughly. Then tie a mesh of periodic profile reinforcement with a diameter of 8 to 12 mm, lay it on the finished base and fill it with concrete.

In order to withstand the technology of installing gas boilers, the dimensions of the foundation in plan should be 50 mm larger than the dimensions of the equipment, and in height it should protrude 50-100 mm above the level of the screed. Complete hardening concrete slab will take you at least 2 weeks, this must be taken into account when planning the work.

Next, a fireproof asbestos or metal gasket is placed on top of the foundation and a heat generator is placed on it, adjusting the legs of the unit so as to maintain a clear horizontal line. After this, using the gas boiler installation diagram, it is connected to all engineering networks except for the fuel line. This connection, as mentioned above, is carried out by a licensed organization.

To install a wall-mounted gas boiler in a private house, you do not need a foundation, but a solid foundation in the form of an outer wall that can support the weight of the unit. First of all, markings are made on it, showing where the heat generator itself will be suspended and where the chimney pipe will exit. Then, using a hammer drill, drill in this place through hole, into which a metal sleeve is inserted.

There is no particular difficulty in hanging a wall-mounted gas boiler. If the action takes place in the kitchen of an apartment or house, it is necessary to take measures to protect the furniture from debris and then begin the fastening process. Difficulties may arise when installing heavy units, whose power reaches 120 kW; here you cannot do without an assistant.

Note. When a wall-hung boiler is attached to a wall made of flammable material, a special bracket must be made to allow a clearance of 45 mm between the wall surface and the rear panel of the heater. Also, a sheet of non-flammable material should be attached to the wall, acting as a protective screen.

The last thing to do is piping the gas boiler and installing the chimney. Here it is necessary to compactly place taps and other fittings under the body of the heat generator so that everything looks neat and at the same time it is possible to disassemble or change any element. Therefore, when the heating circuit in the house is made of polypropylene pipes, then it is better to use bronze taps and mud pans, and connect plastic pipes through threaded adapters. In this regard, it is somewhat more difficult to install a double-circuit gas boiler, where you will need to lay pipes for hot water supply and correctly connect them to the appropriate pipes.

Requirements for chimneys

In essence, the requirements for the chimneys of floor-standing and wall-mounted gas boilers are identical; the difference may be in the design of the flue itself. It depends on the design of the heat source:

Heat generators with an open combustion chamber take air from the room and exhaust combustion products through a traditional chimney with natural draft.
Units equipped with a closed chamber draw in air from the street forcibly using a fan through a double-walled pipe, which also serves as a flue (coaxial chimney).

A traditional chimney for a gas boiler is installed in the thickness of the wall or suspended from the outside of the building. The cross-section of the outlet pipe from the unit determines the diameter of the entire chimney; it should be the same size, or better yet, 20-50 mm larger. The horizontal section connecting the boiler to the chimney is ideally 1 m long, the maximum allowable length is 2 m.

Below the insertion point, a door is required for cleaning and internal inspection, and the blind end of the vertical pipe is equipped with a condensate drain system. When installing the chimney of a gas boiler, you must remember that it is not allowed to cover the pipe outlet with umbrellas, deflectors, weather vanes, and so on. In accordance with the regulations, only a narrowing nozzle can be installed.

Unlike traditional exhaust ducts for combustion products, it is much easier to install a double-walled chimney for heat generators with a closed chamber. Having done in external wall a hole of the required diameter and having built a metal sleeve into it, a coaxial chimney is installed, which is a horizontal double-walled pipe of a certain length. The only condition that must be met is slight slope towards the smoke exit. This is done to prevent condensate formed in the air duct from flowing into the boiler.

Conclusion

So, installing and piping the boiler with your own hands is not an easy task, but it is quite feasible. It will take a lot of time and patience to complete all the documentation, but you yourself installation work will take a maximum of 3-4 days, or even less. It is important to prepare well and purchase in advance all the missing elements of the strapping scheme, as well as fasteners.

An autonomous heating system is the dream of many homeowners. Most of them choose gas heating, a significant disadvantage of which is the mandatory installation of equipment by certified specialists. However, control over the actions of invited workers is still necessary, don’t you agree?

Here you will learn how to building regulations a floor-standing gas boiler must be installed. We will tell you how to prepare a room for installing a heat generator, and how to properly organize the removal of combustion products. Our advice will help you build a safe and effective system.

The information presented for review is based on regulatory documents. To optimize the perception of a difficult topic, the text is supplemented with useful illustrations and video instructions.

Those who are sure that installation begins with its purchase are greatly mistaken.

We start with collecting permits. Simultaneously with obtaining the necessary papers, you should begin to select and prepare a site for installing the heating unit, while taking into account the following regulatory requirements:

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Content

Is it possible to install a gas boiler with your own hands?
How to choose the right installation location?
How to place a gas boiler on the wall?
Installation process of a mounted gas boiler

Introduction

Wall-mounted gas boilers are very popular among owners of autonomous heating systems. Since the fuel used in them is very explosive and toxic, it is necessary to approach the installation and commissioning of these devices with all responsibility. Installation of a wall-mounted gas boiler in a private house should be carried out in strict accordance with technical requirements and standards.

Installation in relation to wall mounted gas boilers, the concept is very comprehensive and can include such work as: correct choice of location and actual installation of the boiler on the wall, connection to the gas main, piping in the heating system. In this article we will exclusively consider issues the right choice premises and placement of the heating device on the wall, as well as existing requirements for carrying out this work.

Is it possible to install a gas boiler with your own hands?

Designing heating system you should take into account the requirements of gas services, which they impose both on the installation site of the wall-mounted gas boiler and on the installation process itself. If all technical requirements and building codes are met, some work can be done with your own hands.

Photo 1: Commissioning of a wall-mounted boiler by a gas service representative

It should be remembered that you are only allowed to independently place the wall-mounted boiler in the prepared room in accordance with the project developed by the gas service. Connection to the gas main and all commissioning work must be carried out by certified specialists authorized to carry out this work.

We also note that not all manufacturers allow the installation of gas boilers with their own hands. Many large companies producing gas heating equipment, such as Bosch, Ariston, Viessmann, will void the warranty on a wall-mounted boiler if the installation was carried out by an unqualified employee.

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How to choose the right installation location?

Depending on the design, the installation requirements for wall-hung gas boilers are somewhat different. If installed heating device with a closed combustion chamber, it can be placed in almost any room of the house. For gas boilers with an open combustion chamber, the requirements are more stringent and a properly equipped boiler room should be provided for them. General requirements, presented by regulatory documents (SP 42-101-2003, SNiP 42-01, SNiP 31-02-2001, MDS 41.2-2000) and controlled by gas services are as follows:

Photo 2: Equipped boiler room for a wall-mounted gas boiler

When installing household mounted gas heat generators with a power of up to 60 kW, the volume of the room in which the installation is carried out must be at least 15 m³. Mounted boilers with an open combustion chamber must be placed in a separate room on any floor of the building. Turbocharged heaters with a power of up to 35 kW can be installed in the kitchen.
The room in which installation is planned must have a ceiling height of at least 2.5 m. If a model with an open combustion chamber is used, it is required to equip it with another suitable material.
The boiler room or kitchen where the mounted boiler is installed must have a window with an area of at least 0.03 m² per cubic meter of room.
When installing wall-mounted gas boilers with an open combustion chamber, it is important to ensure proper ventilation. The hood should produce three air exchanges in the room within an hour, and forced ventilation replenish the volume consumed by the hood plus supply the air necessary for normal operation burners.
The external gas pipeline is supplied directly to the room where the boiler is installed. The section of pipe passing indoors must comply with the requirements of SNiP 2.04.08 for low-pressure gas mains.
It is necessary to provide a connection point to the electrical network with grounding and artificial lighting. The temperature in the boiler room should be in the range from +5 to +35 °C with air humidity not exceeding 80%.

Photo 3: Installing a wall-mounted boiler in the kitchen of a country house

For more detailed information, please contact directly regulatory documents given above. They regulate in detail the installation of mounted gas boilers and in them you can find answers to all questions that arise during the design.

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How to place a gas boiler on the wall?

Having correctly selected and prepared the room for installation, you need to determine the position of the wall-hung gas boiler on the wall and prepare the surface for installation accordingly:

Photo 4: Correct placement gas boiler on the wall

It is recommended to install it on a solid wall that can support the weight of the device. If the wall is made of flammable material (for example, wooden house), then between the boiler and the wall there should be a gasket made of non-combustible material protruding along the perimeter of the device at a distance of 200 mm. Typically, a layer of asbestos cardboard is used, and a sheet of galvanized steel is attached on top of it.
It is recommended to install the mounted boiler at a height of 90-120 cm from the floor and at a distance of at least 10 cm from adjacent walls. This space is necessary for convenient piping and servicing of the boiler.
The electrical outlet must be located next to wall-mounted boiler and in no case under it. This will avoid a short circuit in the event of a leak. A place should be provided nearby for.

Requirements for the location of gas boilers on the wall and the distance to various elements The structures of many models are different. We have given the most typical values, but still, before installation, you need to clarify them in the passport for a specific device.

A gas boiler is the best way to create a reliable heating network for your home. Such equipment is characterized by high efficiency at low financial costs of use, and also makes it possible to flexibly regulate heating interior spaces. We will talk about the requirements for the room where you plan to install the boiler, the characteristics of the heating equipment and the rules for its installation in this article.

Preparations for boiler installation - regulations and design documentation

For proper installation gas boiler in a cottage, country house or private house, you must first familiarize yourself with the existing regulatory documentation regulating the rules for performing such work. The standards describe the features of installing gas equipment to create an autonomous heating system.

First of all, you should study SNiP 31-02-2001 on gas supply country houses. All are listed here legal requirements requirements for installed gas equipment. Additionally, information about device requirements autonomous system heating is also contained in the documents:

SNiP 41-01-2003 on ventilation, heating and air conditioning;
SNiP 2.04.01-85 on the installation of internal water supply;
SNiP 21-01-97 on fire safety;
SNiP 2.04.08-87 vol.

According to these requirements, in order to install a boiler in a house, it is necessary to first obtain technical conditions, which are the basis for organizing work on connecting household equipment to the central gas supply line. To obtain specifications, you need to contact your local gas service and submit an application, indicating the expected gas consumption for heating needs. In central Russia, from 7 to 12 m 3 of gas per day is consumed for gas heating.

The submitted application will be reviewed by the company’s specialists, if it is possible to organize the connection, the owner will receive technical conditions, but if for some reason it is impossible to ensure the supply of gas to the house, the owner of the property will be given a reasoned refusal. The application review process takes place within one month, but the owner may receive a response much earlier.

Technical conditions are an official permit for the installation of gas equipment. Carrying out work without specifications is considered illegal and dangerous for home users.

Having received the technical conditions, you can proceed to creating a project to connect the facility to gas supply. The project must include a diagram for the installation of gas communications - gas supply pipes from the central pipeline to a private one land plot and from the point where the site is connected to the inside of the house.

Gas supply design is permitted only to qualified specialists who have all the appropriate permits and licenses to perform such work. It is impossible to independently prepare a project for connecting to the network. Ready project submitted for approval to the department of the organization that controls gas supply in locality. Approval is carried out within 90 days from the date the owner submits the application.

When submitting an application for project approval, the following documents must be attached to it:

technical passport and instructions for using the installed boiler;
certificates of conformity;
confirmation of compliance of the gas unit with safety requirements.

If for some reason the gas service decides to refuse the owner’s approval of the project, he will be given a reasoned refusal and a list of actions necessary to obtain permission to connect the house to the gas supply and install gas equipment.

Requirements for the premises - where can a boiler room be installed?

Gas equipment differs in power. Devices with a power of less than 30 kW can be installed in any non-residential premises, and for more powerful devices a boiler room is required. Boiler room is separate room, intended exclusively for the placement of heating equipment and not used for other needs.

Most often, premises in the basement are used to install a boiler room in a house; the room must meet all modern requirements and standards. The installation of a boiler room in the basement is permitted only in single-apartment residential buildings. You can also place the boiler in an attached room to the house.

The legislation regulates the requirements for the boiler room:

1. The area of the room for installing heating equipment must be 4 m2 or more. Only 2 boilers can be installed in one boiler room.
2. The height of the boiler room ceiling is at least 2.2 m.
3. The boiler room needs a window for lighting; its size is calculated by the formula - for every 10 m 3 of boiler room volume there should be 0.3 m 2 of window area. The minimum window area is 50 cm2.
4. Doorway width – from 80 cm.
5. The distance to the door is at least 1 m, but it is better to place gas equipment further from the entrance, at least at a distance of 1.3 m.
6. In front of the boiler, provide free place required for repair and maintenance of equipment – from 1.3 m.

The boiler in the room must be installed strictly horizontally. Such installation will minimize the noise and vibrations that occur during its operation. The equipment is installed only on a flat floor made of durable, non-combustible materials. The walls in the boiler room must also be built and lined using materials classified as fireproof and heat-resistant.

For normal and safe operation of the boiler room, it is necessary to supply cold water, as well as organize a system for draining water into the sewer located in the floor. All electrical sockets The room must have grounding. The room must have access to the chimney so that when servicing the equipment, it is possible to control the patency of the channels and carry out cleaning.

Chimney installation and ventilation system

According to the rules for installing gas equipment in the room where the boiler is installed, it is necessary to organize functional ventilation and smoke removal systems. If these systems are not in the room, or they cannot function normally, this may cause breakdown of expensive equipment and emergency situations.

The ventilation and chimney ducts in the boiler room must be separate. The ventilation system must work not only to remove air from the room, but also to supply pure oxygen, therefore it is necessary to organize a functional supply and exhaust system. The entrance window of the ventilation duct is made in the lower part front door or in an external wall. The size of the opening should be at least 1/30 of the area of the boiler room and at least 8 cm 2 per 1 kW of boiler power (if the air flow comes from the street). If air enters the room from another room, then the hole size is made from 30 cm 2 per 1 kW. In the boiler room ventilation duct must be open at all times so that air can constantly circulate in the room.

It is best to install the boiler in close proximity to the chimney. A chimney installed in a wall must have two channels:

main – for pipe installation;
audit – for Maintenance(located below the main one at a distance of 25 cm or more).

The outlet of the chimney must correspond in size to the outlet pipe of the gas equipment being installed. The chimney itself should have no more than 3 turns and bends. The system pipe is made of stainless steel or carbon sheet steel. Installation of pipes made of asbestos or other layered materials can only be carried out at a distance of 50 cm from the boiler chimney pipe.

Before installing the chimney, it is necessary to calculate its optimal location and length. This calculation will improve the functionality of the system and make it safe to use. For pipes used in chimneys, the following requirements apply:

the pipe must rise above the roof without a ridge by at least 50 cm;
a pipe that goes out onto the slope at a distance of less than 150 cm from the ridge is equipped with a head that rises half a meter above the ridge;
a pipe extending through a pitched roof at a distance from the ridge of more than 150 cm, but less than 300 cm, must have a head no lower than the top of the ridge;

At a distance from the pipe of pitched roof to the ridge more than 300 cm, the head is positioned so that its height reaches conditional line, drawn at an angle of 10˚ from the top of the ridge to the horizon.

Types and features of connecting gas equipment

On the gas equipment market, boilers are presented in a wide range; owners of private houses can only select the right devices that meet the characteristics of the installation location and the requirements for heating intensity. There are several options for classifying boilers; such devices are divided according to the following criteria:

by installation method;
by design;
by power;
according to the ignition method;
according to the method of removing combustion products.

By design characteristics boilers are divided into single- and double-circuit. Single circuit devices are intended exclusively for heating. If it is necessary to organize hot water supply in the house, you will have to use an additional device - a boiler. Dual-circuit models can ensure the operation of hot water supply and heating systems simultaneously. They operate on the flow-through heating principle or have a built-in boiler that heats the water to the required temperature. Due to this, dual-circuit devices are considered more versatile, but also more expensive.

According to the installation method, devices are divided into wall-mounted and floor-mounted. Floor-standing devices differ from wall-mounted ones large sizes and power, because of this they sometimes require installation in a special boiler room. Wall boilers have become more popular lately, because their use is possible both in private homes and apartments. Wall-mounted appliances are good because they do not require the installation of a full-fledged chimney; combustion products can be removed through external wall through a coaxial chimney.

Very important parameter when choosing a boiler - its power. To guarantee high-quality heating of all interior spaces of a residential property, it is necessary to first calculate the power of gas equipment. For efficient heating Every 10 m2 of house area requires at least 1 kW of boiler power. It is highly advisable to choose a device with a power reserve of 20%, so that during operation it does not have to work at its maximum capacity.

It should be taken into account that the specific power for heating 10 m2 of house area varies for different regions of Russia. If in middle lane 1 kW is quite enough, then for the north it is better to carry out the calculation, taking a value of 1.5 or even 2 kW as the specific power. In the southern regions, such power is not needed; it is quite enough to carry out calculations with specific power indicators at the level of 0.7-0.8 kW.

Rules for installing a heating system

It is best to entrust the task of installing gas equipment to qualified specialists who will be able to perform the necessary work correctly, in full compliance with modern legislation, and will create a safe and functional system for your home. Sometimes you can carry out installation work on your own, but for this you will have to obtain personal permission from representatives of regulatory organizations, but even in this case, acceptance and testing of the installed boiler must be carried out by professionals.

Before starting installation, you need to make sure you have purchased everything necessary equipment and components, for this you should re-examine the prepared installation project and technical documentation for the installed boiler. After this, the floor-standing device is installed on durable surface, the ideal mounting base is concrete screed, covered metal sheet or ceramic tiles. Such a floor is needed not only under the boiler itself, but also throughout the entire pre-furnace space - about 40-50 cm in the front of the boiler.

The device is installed on the base so that it rests firmly on the surface with all legs. An unstable installation may cause the device to malfunction.

During installation, the following requirements must be met:

distance from the boiler surface to the ceiling – from 1.2 m;
distance from the boiler to an unprotected wall – from 32 cm;
distance to a wall covered with a metal sheet – from 26 cm;
distance from chimney to an unprotected wall - from 50 cm;
distance from the chimney to the protected wall – 25 cm;

To install wall-mounted boilers, special brackets or mounting strips included with the device are mounted into the wall. Installation must be performed at a height of 1 to 1.6 m to the floor. Brackets and strips must be installed according to the building level so that the boiler is suspended exactly vertically and horizontally. On installed mounts The device is hung.

Next, the boiler is connected to installed chimney through a special pipe (the connection of the pipe to the pipe must be sealed without gaps). Afterwards, water is poured through the water supply system into the heating pipeline (before entering the boiler, a coarse filter and shut-off valves on both sides of it are mounted on the pipe). It is very difficult to ensure the tightness and proper operation of the system on your own, so we once again recommend turning to professionals to install the device.