The house, by definition, should be warm. There are many ways to make it so. However, each owner strives to make this the most economical and practical method. One of these options is the installation of a gas boiler. Gas heating is profitable and quite simple to install and operate. The connection of devices should be carried out only by specialists, but the arrangement of the boiler room, the installation of the boiler, etc. You can do it yourself and save a lot of money.

The installation of gas equipment should begin with obtaining permits and the necessary approvals. It is necessary to order a project for gasification of premises, installation of gas equipment. The document is developed and approved by specialists from the gas supplier company. Having become acquainted with the project, you can begin to purchase the necessary equipment, the main characteristics of which should be present in the document. In addition, an agreement on the supply of natural gas should be concluded. After that, you can directly engage in the installation of the system.

We equip a suitable room for the boiler

The gas boiler is the main element of the heating system. To install it, you will need to properly equip the room. It must comply with a number of strict requirements, the violation of which entails significant penalties and provokes accidents with the most serious consequences. Gas is an explosive and combustible substance. You have to be extremely careful with him.

The room in which gas equipment is installed must meet a number of requirements. The main characteristics of the boiler room are presented in the form of a diagram

When choosing a place to install a heating gas boiler, the following requirements for the room must be taken into account:

• in one of the walls there should be a channel for the removal of combustion products;
• mandatory natural light. The minimum window area is calculated by the formula: per cubic meter of room volume - 0.03 sq. meters of window surface;
• ceiling height at least 2.5 m;
• layout that provides unhindered access to the boiler and auxiliary equipment;
• the presence of a ventilation grill located in the lower half of the wall or door. The construction area is calculated based on the ratio of 8 square meters. see gratings for each 1 kW of the boiler;
• volume - at least 15 square meters. m;
• fire resistance of wall structures - at least 0.75 hours;
• the presence of a gas analyzer and an automatic valve that responds to its signals, which will shut off the fuel supply in the event of a gas leak;
• a well-organized chimney, the cross section of which must correspond to the power of the equipment;
• the width of the door should not be less than 80 cm.

It must be remembered that the installation of gas boilers with a power of less than 60 kW is allowed in any room, except for those intended for living. It is also not recommended to install gas equipment in the bathroom or bathroom. Double-circuit appliances are not allowed to be installed in kitchens. If the total power of the equipment is not higher than 150 kW, it can be placed on any floor of the building. Higher power appliances can only be located on the ground floor or in the basement.

Many people prefer to place gas equipment in the kitchen. In this case, the standards governing the installation of gas boilers require that the required minimum area be calculated based on the fact that at least 0.2 m 2 of space is required per 1 kW of power. If the kitchen is combined with the living room, the presence of a gas analyzer becomes mandatory, which can notice a possible gas leak in time.

If the power of the boiler allows, gas equipment is often installed in the kitchen, even if it is a room combined with a living room. In this case, the presence of a gas analyzer becomes a mandatory precaution.

Gas equipment installation technology

In order for the installation of the boiler to proceed without complications, it is necessary to pay attention to the method of its fastening even during the purchase of equipment. You should check the complete set of the device and find out the presence of fasteners. If they are not, you must immediately buy the right ones. In addition, when buying equipment, be sure to check whether it has a certificate. In the absence of a document, serious problems with registration are possible. The characteristics of the device and the serial number printed on the inner door of the device must match the information indicated in the passport.

Option # 1 - installing a floor boiler

Before installing the floor unit, you should prepare a place for it. Let's start with the floor. Since the equipment is heavy, the base must be strong. You may need to fill the screed. The floor on which the boiler will be installed must be made of a material with a non-combustible coating. If this is not the case, hollow concrete blocks 100 mm high are laid on top of the floor and covered with a metal sheet 0.8 mm thick on top. As an option, the use of refractory boards approved for such purposes can be considered.

The appliance must be positioned at a distance of at least 0.1 m from the wall, provided that the coating is made of non-combustible materials. If it is necessary to move the appliance close, the wall must be fireproof. In this case, the base is insulated with roofing steel, which is superimposed on an asbestos sheet with a thickness of at least 0.3 cm. The insulation must overlap the dimensions of the appliance body along the perimeter by at least 0.1 m. walls at least 1 m.

The equipment is installed on the prepared base as evenly as possible. For verification, the building level is used. If necessary, solid non-combustible material is placed under the legs of the appliance. The boiler is connected to a chimney and an internal heating system. To prevent rapid clogging of the heat exchanger, a hard filter is installed before the return inlet. If the boiler is double-circuit, it is connected to a pipeline with cold water.

The floor gas boiler must be installed on a prepared base. The floor, if necessary, is reinforced and a base of non-combustible materials is installed. Most often, these are hollow concrete blocks 100 mm high, covered with a sheet of metal.

Experts recommend installing the boiler so that it can be easily dismantled. Shut-off valves are installed on all pipes connected to the device. They will make it possible, if necessary, to dismantle the equipment without unwanted discharge of water from the operating system.

It must be remembered that a complete installation of gas boilers cannot be done with your own hands. Be sure to invite a certified specialist who will check the correctness of the installation, perform the remaining necessary measures and start the system.

Option # 2 - connecting attachments

Proper installation of gas wall-mounted boilers begins with flushing the inner tubes. During assembly, various small debris that must be removed could well have got into them. To do this, the plugs necessary for transportation are removed from the device and water is passed through it under slight pressure. After flushing, the equipment is ready for installation.

The wall where the appliance is to be fixed must be very even and strong enough to support the boiler and related appliances. If the base is made of combustible materials, a non-combustible gasket with a width of at least 3 mm is attached to it. In this case, the boiler is fixed at a distance of at least 4.5 cm from the wall. The installed appliance must be at least 20 cm away from other equipment or flammable materials. It is not recommended to place the boiler near a window or in a small wall opening. The power source must be close to the device.

The device is mounted on slats that are mounted on the wall at the desired height. Usually it is in the range from 0.8 to 1.6 meters from the floor. After fixing the device with a level, the installation horizontal is checked. All identified discrepancies are corrected, otherwise it may adversely affect the operation of the equipment. Connected to the water supply. Before this, the plugs from the nozzles must be removed. It is desirable to install filters at the water inlets, so the heat exchanger will be less clogged.

The wall-mounted gas boiler must be installed exactly horizontally, the installation accuracy must be checked by the level. Otherwise, there may be problems with the operation of the equipment, up to the occurrence of emergency situations.

The gas pipeline is connected to the boiler only with a metal pipe with a rigid connection or through a special shackle. A paronite gasket is mandatory. Direct connection of the system is carried out only by certified specialists who will check how correctly the boiler is installed and start the equipment.

Gas heating is efficient and economical. However, do not forget that the gas is potentially dangerous. No need to try to make an independent installation of gas appliances without special knowledge and skills. The cost of a mistake may be too high. Regardless of who installed the equipment, the connection is carried out only by specialists of the gas company. They also check the correctness of the installation. Do not save money on the services of professionals. Even if it may seem that the cost of their work is too high, believe that the life and safety of everyone who lives in the house is worth much more.

Content

1. Is it possible to install a gas boiler with your own hands?
2. How to choose the right place for installation?
3. How to place a gas boiler on the wall?
4. The installation process of a hinged 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 poisonous, 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 the technical requirements and standards.

Installation, in relation to mounted gas boilers, is a very voluminous concept and may include such work as: the correct choice of location and the actual installation of the boiler on the wall, connection to the gas main, piping in the heating system. In this article, we will consider only the issues of choosing the right room and placing the heater on the wall, as well as the existing requirements for these works.

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

When designing a heating system, one should take into account the requirements of gas services, which they impose both on the installation site of a wall-mounted gas boiler, and on the installation process itself. If all technical requirements and building codes are met, some work can be done by hand.

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

It should be remembered that it is 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 who have permission to carry out these works.

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, void the warranty for a wall-mounted boiler if the installation was carried out by an unqualified employee.

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How to choose the right place for installation?

Depending on the design, the requirements for the installation of mounted gas boilers are somewhat different. If a heater with a closed combustion chamber is installed, then it can be placed in almost any room in 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. The general requirements imposed 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

1. When installing household hinged 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.
2. The room in which the 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 or other suitable material.
3. The boiler room or kitchen where the mounted boiler was installed must have a window with an area of ​​at least 0.03 m² for each cubic meter of the room.
4. 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 the supply ventilation should replenish the volume consumed by the hood plus supply the air necessary for the normal operation of the burner.
5. The external gas pipeline is supplied directly to the room where the boiler is installed. The section of the pipe passing inside the premises must comply with the requirements of SNiP 2.04.08 for low-pressure gas pipelines.
6. It is necessary to provide a point of connection 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, you should refer directly to the regulatory documents listed 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, it is necessary to determine the position of the wall-mounted gas boiler on the wall and prepare the surface for installation accordingly:

Photo 4: Proper placement of the gas boiler on the wall

1. Installation is recommended to be done on a solid wall that can support the weight of the device. If the wall is made of combustible material (for example, a wooden house), then between the boiler and the wall there must be a gasket made of non-combustible material protruding along the perimeter of the appliance to a distance of 200 mm. Usually, a layer of asbestos cardboard is used as a layer, and a sheet of galvanized steel is attached on top of it.
2. The hinged boiler is recommended to be installed 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 maintenance of the boiler.
3. The electrical outlet must be located next to the wall-mounted boiler and in no case below it. This will prevent a short circuit in the event of a leak. Nearby should provide a place for.

The requirements for the location of gas boilers on the wall and the distances to various structural elements are different for many models. We have given the most typical values, but still, before performing the installation, it is necessary to clarify them in the passport for a specific device.

If he does not dream of autonomous gas heating with hot water supply, then surely any householder seriously thought about it, both in a city apartment and in a private house. Only it today is able to reliably provide a comfortable temperature in the house cheaper than the central one. However, installing a gas boiler with your own hands is a complex, responsible matter that requires a permit. Actually, taking it on yourself makes complete sense only if you have sufficient funds to purchase a double-circuit boiler with a boiler and a full set of automation, and your housing is suitable for installing a boiler according to specifications.

The second case when you need a gas boiler is if you are not rich, and there is no hot water in the house at all and is not expected. In this case, you need the simplest budgetary single-circuit flow-through boiler for hot water supply, which allows you to wash the dishes and take a shower. A gas boiler is more expensive than an electric boiler, but, given the cost of installing a gas meter, at current rates it pays off in a winter of a year and a half, depending on the place of residence. If, again, you can put it in your apartment, and you are not afraid of walking through the authorities.

Two big differences

The boilers mentioned above are the extremes of a huge variety of models of gas water heating devices. They are available for self-installation. Any other gas heating boiler for installation requires professional work. However, every cloud has a silver lining - specialized firms take upon themselves the preparation of the premises with the paperwork. But why can only the "tips of scissors" be installed by yourself?

Simple water heater

The simplest boiler is really very simple: a gas burner, a heat exchanger - that's all. It is enough to connect water, gas to it, bring the exhaust into the chimney - and you can use it. If the papers are already issued; otherwise, an inevitable large fine.

Home boiler room

A double-circuit boiler with a boiler and full automation is so “smart” that it is as easy to install as the simplest one. Automation is important not only for simplicity: a complete system with a double thermostat and a microprocessor monitors the temperature in the house and outside, according to a given program, reduces heating to a minimum according to the sanitary standard when no one is at home (for example, when everyone is at work). The gas consumption of such a boiler is 30-70% less than with manual or semi-automatic adjustment, and the more severe the weather, the more savings.

But such a home boiler room has a serious drawback: if you find yourself in a natural disaster area and the power supply is interrupted, the automation “stalls”, and the boiler goes into the minimum space heating mode. Therefore, such a boiler requires an additional expense for a guaranteed power supply. It is not difficult to provide it yourself, see below.

Where it is possible and where it is impossible to put a gas boiler

The rules for installing a gas boiler provide the following requirements for the installation of a HEATING boiler, regardless of whether it also provides domestic hot water or not:

1. The boiler must be installed in a separate room - a furnace (boiler room) with an area of ​​​​at least 4 square meters. m., with a ceiling height of at least 2.5 m. The rules also state that the volume of the room must be at least 8 cubic meters. Based on this, you can find indications of the admissibility of a ceiling of 2 m. This is not true. 8 cubes is the minimum free volume.
2. The furnace must have an opening window, and the width of the door (not the doorway) must be at least 0.8 m.
3. Finishing the furnace with combustible materials, the presence of a false ceiling or raised floor in it is unacceptable.
4. Air must be supplied to the furnace through a through, non-closable vent with a cross section of at least 8 sq.cm. per 1 kW of boiler power.

Note: 8 cubes free - with a boiler power of up to 30 kW. For power from 31 to 60 kW - 13.5 cubic meters; for power from 61 to 200 kW 15 cubic meters. For boilers with a closed combustion chamber, the volume of the furnace is not standardized, but the dimensions must still be observed.

For any boilers, including wall-mounted hot water boilers, the following general standards must also be met:

• The boiler exhaust must exit into a separate flue (often incorrectly referred to as a chimney); the use of ventilation ducts for this is unacceptable - life-threatening combustion products can get to neighbors or other rooms.
• The length of the horizontal part of the flue must not exceed 3 m within the furnace and have no more than 3 angles of rotation.
• The outlet of the flue must be vertical and raised above the ridge of the roof or the highest point of the gable on a flat roof by at least 1 m.
• Since the products of combustion form chemically aggressive substances during cooling, the chimney must be made of heat- and chemical-resistant solid materials. The use of layered materials, e.g. asbestos-cement pipes, permissible at a distance of at least 5 m from the edge of the boiler exhaust pipe.

When installing a wall-mounted hot water gas boiler in the kitchen, additional conditions must be met:

• The height of the boiler suspension along the edge of the lowest branch pipe is not lower than the top of the sink spout, but not less than 800 mm from the floor.
• The space under the boiler must be free.
• A strong fireproof metal sheet 1x1 m should be laid on the floor under the boiler. Gas workers and firefighters do not recognize the strength of asbestos cement - it wears out, and the SES prohibits having anything containing asbestos in the house.
• The room should not have cavities in which combustion products or an explosive gas mixture can accumulate.

If the boiler is used for heating, then the gas workers (who, by the way, are not very friendly with the heating network - it always owes them for gas) will also check the condition of the heating system in the apartment / house:

• The slope of the horizontal pipe sections must be positive, but not more than 5 mm per linear meter in terms of water flow.
• An expansion tank and an air valve must be installed at the highest point of the system. It is useless to convince you that you will buy a “cool” boiler in which everything is provided for: rules are rules.
• The condition of the heating system must allow it to be pressure tested at a pressure of 1.8 atm.

The requirements, as we see, are tough, but justified - gas is gas. Therefore, it is better not to think about a gas boiler, even a hot water boiler, if:

• You live in a block Khrushchev or other apartment building without a main flue.
• If you have a false ceiling in your kitchen, which you do not want to clean, or a capital mezzanine. On a mezzanine with a bottom made of wood or fiberboard, which, in principle, can be removed, and then there will be no mezzanine, gas workers look through their fingers.
• If your apartment is not privatized, you can only count on a hot water boiler: allocating a room for a furnace means redevelopment that only the owner can do.

In all other cases, you can put a hot water boiler in the apartment; heating wall is possible, and floor - very problematic.

In a private house, any boiler can be installed: the rules do not require that the furnace be located directly in the house. If you make an extension to the house from the outside under the furnace, then the authorities will only have fewer reasons for nit-picking. In it, you can put a floor gas boiler of high power for heating not only the mansion, but also office space.

For private housing of the middle class, the optimal solution is a wall-mounted boiler; under it is not required, as for the floor, to arrange a brick or concrete pallet with sides of half a meter. Installing a wall-mounted gas boiler in a private house also does without technical and organizational difficulties: a fireproof closet for a furnace can always be shielded, at least in the attic.

Power supply

The automation of heating boilers consumes little electricity, but according to the rules, the boiler still needs a separate wiring branch with a 20 A automatic machine, like for a boiler. For backup power, any computer UPS is well suited. Kilowatt will "hold" the automation for half a day or a day. This is quite enough to take the necessary measures in case of emergency.

About the flue

The cross-sectional area of ​​​​the house flue for it depends on the required power of the boiler (see below). At any power, the diameter of the flue must be at least 110 mm and not less than the diameter of the exhaust pipe. The dependence of the diameter of the flue on the power of the boiler is as follows:

• up to 24 kW - 120 mm.
• 30 kW - 130 mm.
• 40 kW - 170 mm.
• 60 kW - 190 mm
• 80 kW - 220 mm.
• 100 kW - 230 mm.

Boiler selection

Power

The fact that the power of the boiler must be sufficient is obvious. But it should not be excessive, especially if the heat exchanger is cast iron. Hot cast iron cracks from drops of condensate from the flue. There is another dangerous effect: the dew point temperature of the exhaust gases is approximately 56 degrees Celsius. If the heating return water temperature is lower, acidic condensate may form in the combustion chamber. What does this have to do with excess power? Too powerful a boiler will quickly warm up the system and go into standby mode before it cools down. The thermal inertia of a powerful heat exchanger is great, and while it warms up again, acid dew can fall out.

With a properly selected boiler power, the temperature in the combustion chamber will be 80-90 degrees. The allowable difference in power is quite large, but if you put a 60 kW boiler in a medium-sized private house, then acid rain from the inside will quickly disable it.

The required boiler power for a particular room is determined by heat engineering calculation. It is easier for residents of high-rise buildings: the data is available in the DEZ, the technical inventory bureau or the owner. In any case, you can use the approximate data by calculating an intermediate value for yourself. The maximum power values ​​are given for cases of a minimum outside temperature of -25/-40 degrees:

1. One-room apartment on the middle floors - 8/14 kW.
2. Corner apartment 60 sq.m. total area on the top floor of the block Khrushchev - 20/28 kW.
3. Private house 100 sq.m common - 24/38 kW.

Boiler

The purpose of the boiler is the accumulation of hot water for domestic needs. If you look at the instructions for the boiler, then the power there will be indicated through a fraction, for example - 10/22 kW. The first digit is the heating output for average conditions; it determines the gas consumption by 80%. The second power, maximum - for the rapid heating of domestic water.

If the boiler is empty, the boiler stops heating the heating for a while (it does not have time to cool down) and heats domestic water at the maximum. The gas consumption is, of course, the maximum. If water is taken from the boiler little by little, then it will be heated in operating mode, without force majeure. Based on this, the capabilities of the boiler can be judged by its capacity:

• 2-10 l - wash hands and wash dishes.
• 30-50 liters - take a quick shower.
• 100 l - wash thoroughly in the shower.
• 150 liters or more - you can take a bath and connect a washing machine to the hot water supply.

Note: if you already have it, it is advisable to leave it by turning off its machine. It will make a good hot water accumulator, and in case of problems with the gas boiler, you can turn it on.

Video: expert opinion on the choice of gas boilers

Documents for the boiler

Let's say you equipped a furnace in compliance with all requirements. Buying a boiler Still early. First of all, check if the old papers have been lost for gas, and take them out into the light of day:

1. Contract for the supply of gas, if the boiler is heating. Subconsumers may only install hot water boilers.
2. All documents for the gas meter. Any boiler cannot be installed without a meter. If it doesn’t exist yet, there’s nothing to be done, you need to set it up and draw it up, but that’s another topic.

Now you can buy a boiler. But, having bought, it is too early to install:

• In BTI, you need to make changes to the registration certificate at home. For privatized apartments - through the organization operating the house. In the new plan, a closet under the boiler should be applied, and clearly marked: “Furnace” or “Boiler Room”.
• Submit an application to the gas service for the project and specifications. As part of the required documents and the technical passport for the boiler, so it must have already been purchased.
• Install the boiler (see next section), except for the gas system. This can be done while the gas workers are preparing the project, if the premises are approved.
• Call a specialist to make a gas piping.
• Submit an application to gas workers for commissioning.
• Wait for the arrival of the gas service engineer, he will check everything, draw up a conclusion on suitability and give permission to open the gas shut-off valve to the boiler.

Note: gas workers are not supposed to give permission to private individuals to work on gas equipment. Therefore, to connect gas to the boiler, you will have to call a specialist or then “resolve the issue” with the inspector during commissioning. As a rule, the first one is cheaper.

Boiler installation

Adjacency of the boiler body close to any of the walls is unacceptable; it is forbidden. After installing the boiler in place, it is tied up - connecting three systems: gas, hydraulic and electric. The gas piping should be done by a gas specialist as indicated, and lastly, when everything else is already connected.

Electrical and hydraulic piping can be done independently. Here the main guiding document is the instructions for the boiler. A typical boiler hydraulic piping diagram is shown in the figure. For any boiler, the following conditions must be strictly observed:

1. Water and hot gases in the boiler heat exchanger must go countercurrent, otherwise it can simply explode with any automation. Therefore, it is extremely important not to confuse, through negligence or for the sake of ease of installation, cold and hot pipes. After hydrobinding, inspect the entire system carefully again, then rest for an hour, and inspect again.
2. If antifreeze has been poured into the heating system, drain it completely and flush the system twice with clean water. The admixture of antifreeze in the water entering the heat exchanger is also explosive.
3. Do not neglect the "mud filters" - coarse water filters. They should be located at the lowest points in the system. The accumulation of dirt between the thin fins of the heat exchanger also creates a dangerous situation, not to mention exorbitant gas consumption. At the beginning and at the end of the heating season, drain the sediment through the sumps, check their condition and, if necessary, flush the system.
4. If the boiler has a built-in expansion tank and a de-airing system, remove the old expansion tank, and close the old air cock tightly, after checking its condition beforehand: air leakage will also create a dangerous situation.

Video: an example of installing a wall-mounted gas boiler

Outcome

Installation of a gas boiler is technically and organizationally complicated. You can install only the simplest water boilers or expensive, fully automated home boilers on your own. But the connection of the boiler to the gas supply system (gas piping) must still be carried out by a specialist in the gas service or a certified installation organization. Otherwise prohibited by the rules for the installation and operation of household gas appliances.

In a modern private house, a gas boiler is indispensable. It is simple and safe to operate. Yes, its installation is very time-consuming and expensive, but in the end, a gas boiler is the most cost-effective solution for heating a house and heating water. Compared to electric heaters, it can pay for itself in one winter.

Gas boilers can be single-circuit and double-circuit. Single-circuit are intended only for heating, double-circuit - for heating and water heating. Also, gas boilers differ in power and type of installation.

It's very important to get it right determine the required power equipment. The disadvantages of insufficient power are obvious. Excess power, in addition to the economic component, is also dangerous. Acid condensate is formed in the combustion chamber from frequent temperature changes, which can corrode the metal parts of the boiler.

The power of the boiler is directly dependent on the size of the room. You also need to make allowance for the climatic conditions in which you live. Divide the area of ​​heated premises by 10, and multiply by a factor of 1.2 - 1.5 for the Moscow region, 0.7 - 0.9 for the southern regions, 1.5 - 2 for the northern regions - and you will get the required power. Thus, for a house with an area of ​​100 square meters, located in the Central region, a device with a capacity of at least 12-15 kilowatts.

The power can be adjusted. Low-power boilers have a single-stage power control. Heating devices of average productivity are equipped with two-stage adjustment. High-performance boilers are equipped with modulated power control.

According to the type of installation, wall and floor boilers are distinguished. Each type of installation has its own characteristics. But, no matter what boiler we install, before its direct installation, a number of requirements must be met that are established by certain SNiPs.

For devices that are installed on the territory of the Russian Federation, the requirements are determined by SNiP 41-01-2003 "Heating, ventilation and air conditioning", SNiP 31-01-2003 "Residential and multi-apartment buildings", SNiPOM 42-01-2002"Gas distribution systems" and other governing documents.

Rules for installing gas boilers in a private house

room

Requirements for parts and equipment parts

Gas outlets (or, as they are often called, chimneys)

1. The passage for the removal of combustion products must be separate from a conventional chimney.
2. Horizontally, its length in the boiler room should not exceed three meters.
3. The gas outlet can have no more than 3 elbows.
4. The diameter of the gas outlet and the power of the boiler must correspond (for power up to 30 kW D=130 mm., for power 40 kW D=140 mm.)
5. The diameter of the gas outlet must not be less than the diameter of the hole for connecting the gas duct.
6. The outer end of the gas outlet must be at least half a meter above the roof ridge.

In modern boilers with a closed combustion chamber, so-called coaxial chimneys, which are sold and installed together with the heating device. When installing such boilers, the dimensions of the room are not important, since the combustion air does not come from it, but from the street.

These general requirements may vary slightly from region to region and are subject to ongoing development and refinement. In addition, there are nuances that the gas supply in the house is not central, but bottled. At the same time, the rules and requirements for installing a gas boiler will differ in some features. There is a difference in what material the house is built from, what are the floors. In order to avoid problems at the project approval stage, it is better to invite a specialist and inspect the house in advance for possible shortcomings.

What actions need to be taken for obtaining permits for the installation of a gas boiler:

Agreed project and is a permit for the installation of a gas boiler.

Installation

The installation sequence of the floor boiler

• The boiler is installed on a solid base that can withstand its weight. To do this, either a concrete screed is poured, or a sheet of galvanized iron is laid on the floor.
• When placing the machine on a base, make sure that it is exactly parallel to the ground.
• Connect to the chimney and check the draft.
• Connect to the pipes of the heating system, while installing a hard water filter (after the outlet line before entering the return line boiler). On both sides of the filter, put shut-off mechanisms (for example, ball valves). Install ball valves on all branch pipes.
• Double-circuit boiler connect to plumbing. It is better to make a tie-in into the water supply system as close as possible to the entrance of the pipe into the building or to the point of branching of the pipe. It is better to connect the water supply pipe from above, the water return pipe - from below.
• Connect to the gas pipeline. This can only be done by a master gasman; you cannot make a tie-in yourself.
• Connect to power supply.

In both installation variants, the system must be filled with water before the first start-up. To do this, the device must be turned off. Water should be drawn very slowly - this is the only way you will get rid of air "bubbles" in the heating system.

It should also be remembered that the installation of any gas equipment cannot be carried out at sub-zero temperatures, the temperature must be from 5 to 35 degrees.

Maintenance of gas equipment

Gas appliances should be serviced regularly, at least twice a year. Be sure to do this before the start of the heating season. The specialist must check the tightness, condition of the chimney and ventilation system, clean the filters and the burner, replace worn parts.

Using a gas floor boiler for heating a house or apartment is considered the cheapest and highest quality option. At the moment, this issue is quite relevant, therefore, there is a wide choice of modifications of both domestic and foreign manufacturers on the markets, differing not only in price, but also in the presence of various functions and additional options.

In order to independently understand the proposals and choose a good, economical floor-standing gas boiler, you need to analyze a lot of information that will help you choose the best option.

Principle of operation

Gas heating device

Almost all floor gas boilers work identically. For their operation, natural or liquefied gas is used as an energy source, which, when burned, heats the heat exchanger inside it.

The latter contains water that is heated and circulates through the system. In this case, for high-quality space heating, you need to choose a device with a high-quality heat exchanger.

It is conditionally possible to divide them into several categories, differing in the material from which it is made:

1. Cast iron. Recognized as the most durable, as it is not subject to corrosion and has a high resistance to burnout. There are many cases when such an element has worked for 50 years. Among the disadvantages can be called the fact that cast iron is considered a brittle material. A sharp drop in the temperature of the liquid inside it or mechanical impact can damage the case.
2. Steel. Floor-standing boilers with a steel heat exchanger are significantly lighter and more resistant to possible shocks. But a significant drawback reduces their positive characteristics. This is primarily due to the fact that the metal burns out much faster than cast iron, and besides, it is subject to corrosion. Therefore, the average service life of such devices is significantly lower and is only 10 years.

To compare the efficiency that gas floor-standing boilers have, a table is given that analyzes the use of heating devices operating on different types of fuel.

The information is presented on the example of heating for a private house with an area of ​​350 m2. The data are given in the average value based on 6 months of the heating season.

Fuel type	Average calorific value	Average cost as of 2019	Annual fuel consumption at a consumption of 120gJ and a volume of heated space of 370 M3	Average efficiency and type of boiler used	Total costs for the heating season, rub
chopped firewood	14.7 mJ/kg, 2450 kcal/kg	1300 rub/m3	9.5 t	Classic boiler, efficiency 66%	11400
Peat briquettes	24 mJ/kg, 4750 kcal/kg	7000 rub/t	5.80 t	Pyrolysis type boiler, efficiency 86% Classic boiler, efficiency 66%	40250
Brown coal	19 mJ/kg, 4000 kcal/kg	900 rub/t	7.8 t	Pyrolysis type boiler, efficiency 86% Classic boiler, efficiency 66%	7110
wood pellets	19 mJ/kg, 4300 kcal/kg	3500 rub/t	7.5 t	Special automatic, efficiency up to 94%	25900
wood briquettes	19 mJ/kg, 4300 kcal/kg	3900 rub/t	7.8 t	Pyrolysis type boiler, efficiency 84% Classic boiler, efficiency 64%	30810
Natural gas	33.8 mJ/kg, 8000 kcal/kg	2.93 rub/m3	3380 m3	Condensing, efficiency 103% Classic, efficiency 91%	9932
Electricity, heaters	3.7 mJ/kWh	3.80 RUB/kWh	34020 kWh	97%	129238
Electricity, water heating radiators	3.7 mJ/kWh	3.80 RUB/kWh	33680 kWh	98%	127946
Diesel fuel, 1 l/0.78 kg	41 mJ/kg, 11000 kcal/kg	23.50 rub/l/ 30.12 rub/kg	31190	91%	95781
Gas propane - butane, 1 l / 0.60 kg	47 mJ/kg	16.90 rub/l/ 28.26 rub/kg	32800	92%	81664

single circuit

A single-circuit floor boiler is considered the most common. Its advantage lies in the following features:

• economy. The cost of such domestic-made boilers varies in the region of 20,000 - 30,000 rubles. In addition, long-term operation is confirmed by reviews;
• maintainability. If it can be problematic to find a part of interest for some types of imported devices, there are parts for a Russian heating boiler in every city. And you can make small repairs with your own hands;
• lack of complex electronics. This makes it easy to maintain and use without training;
• low gas consumption.

Gas boilers for heating a private house come with an open or closed combustion chamber. The difference is that the former use the fresh air of the room to function, and carbon monoxide is removed through the chimney.

The second - with the help of fans they take air from the street and similarly remove the exhaust gas to the outside. The operation of an open boiler takes place on the principle of a gas burner: they heat up and heat the air around them. From this we can say that their efficiency is significantly lower than that of a closed one, from which all the heat goes to the heat exchanger.

double circuit

The cost of such a device will differ from single-circuit ones by 20 - 30% upwards. But this is due to a number of reasons that characterize it on the positive side:

• high heat transfer;
• performing a dual function: heating and providing hot water;
• a wide range of options equipped with electronics, which allows us to talk about reliability and self-stop when a malfunction is detected.

Do-it-yourself installation of a double-circuit type floor gas boiler is not particularly difficult. To do this, you need to connect it to the heating pipeline and connect it to a water mixer. After that, contact a specialized workshop to call a master who will connect the boiler to the gas pipeline and carry out the first start-up of the device.

Considering the principle of operation, 2 main actions can be distinguished:

• during the opening of the hot tap, the gas supply to the heat exchanger is turned off;
• in this case, the burner operation switches to heating the circuit associated with heating the water supply. At the same time, the heating procedure itself is carried out in a flow mode without the use of storage tanks.

Separately, it should be noted that the automatic shutdown, based on electronics, will only work when there is a power supply. When the power is turned off, the functionality of such equipment will drop sharply.

Special Requirements

Modern gas floor boilers meet all safety requirements and comply with regulations. In some cases, the use of combined devices is practiced, in which, when the gas supply is turned off, the system automatically shuts off the valve and starts it from the mains. All the pros and cons of installing a double-circuit boiler, see this video:

The simplest models are not equipped with automation, so you need to switch them yourself. Therefore, it is recommended to periodically check its performance in case of possible shutdowns.

Entrust the installation of the boiler to specialists

Gas is considered a source of increased danger, therefore, to connect a gas boiler in a private house, it is imperative to invite a specialist licensed to carry out this activity.

When building a private house, the issue of planning should be taken very seriously. The fact is that the installation of a gas floor boiler is allowed only if all conditions are met. They are regulated by the requirements prescribed in the SNiP and fire safety. Any non-compliance or deviation from them will lead to the fact that, at best, during a periodic inspection, the owner will receive an administrative fine, and at worst, it will end in an explosion or fire.

These requirements do not apply to electric boilers; they can be installed anywhere. But in order to achieve a violation of the aesthetics of the room, it is recommended to use a special room for these purposes.

Advantages and disadvantages of AOGV

AOGV is optimal in terms of fuel consumption and heat transfer

A floor-standing gas boiler for heating a private house is considered the most popular for newly built or renovated buildings.

When contacting a specialized organization with the question of what equipment to install in order to heat your home, most likely you will receive an answer that it is a floor-mounted AOGV. First of all, this is due to the fact that in the ratio of material consumption and heat transfer, gas is the leader in this rating.

Advantages

The main check of the installed gas boiler will take place in winter

The wide popularity of gas floor boilers for heating residential and non-residential premises is explained by the fact that such equipment has a number of advantages that compare favorably with its main competitors.

First of all, this is a significant savings, the ability to do a partial installation with your own hands, ease of further maintenance and ease of operation. In addition, there are a number of other advantages of such equipment:

Flaws

If you are afraid of fire, do not choose devices with an open burner

Despite the fact that the floor gas boiler has such significant advantages, before giving preference to it, you should familiarize yourself with the special conditions for its design and operation, which can be presented as disadvantages of such equipment.

For some, they may seem insignificant, while for others, on the contrary, they are significant. Here are the main ones:

1. Before installing floor gas heating boilers, you need to collect a lot of permits. For example, approval from the State Technical Supervision Service, to provide a project for the upcoming installation, an act of checking the chimney, a plan of the room in which a certain place is allocated for its installation.
2. Low pressure in the gas pipeline can lead to the fact that they begin to smoke, as a result of which the chimney is clogged and the efficiency of the equipment is reduced.
3. Choosing devices with an atmospheric burner is undesirable for people who are afraid of open fire. This is due to the fact that in such boilers the flame is in plain sight.

Being faced with the question of how to choose the best option for your home, you should give preference to boilers equipped for operation in Russia.

This is due to the fact that the pressure in the system can change significantly, therefore, having dropped to a minimum level, the imported burner can start to burn itself, which will lead to the failure of the entire boiler.

Boiler selection

What is the best floor gas boiler to buy for your home? This question is asked by almost everyone who is faced with its acquisition. In this case, the following questions will be faced:

• single-circuit or double-circuit;
• imported or domestic;
• with open burner or closed.

Having solved all these questions, the problem of determining the power of the device will arise. It should be noted that this value directly depends on the area of ​​​​your house, the presence of warm pilaf in it, which heats some rooms, the number of residents and a number of other reasons. For more information on choosing a device for a country house, see this video:

For an approximate acquaintance with the calculation method, you can use the table below.

House area, m2	Heating, kW	Number of devices	Number of persons	Standard range of boilers, kW NS / A / ND (explanation is given below)
100	19	10	4	26/25/26
150	20	11	4	26/25/26
200	26,5	17	4	31/34/35
250	27	20	6	-/37/38
300	31	26	6	-/45/45
350	34	30	6	-/45/45

Abbreviated terms in the last column, marked with *: HC - wall-mounted boiler, A - floor boiler with atmospheric heater, ND - floor boiler with fan burner.

Observe safety measures when working with gas equipment

Having decided to install such equipment with your own hands, in order for it to perform high-quality and economical space heating, it should be borne in mind that natural gas is an explosive and flammable substance.

Therefore, even if you know how to install floor gas boilers for heating, you cannot do it yourself. As mentioned earlier, for this there are specially trained licensed specialists who will perform these works correctly, and most importantly, in compliance with safety regulations.