Service life of a gas boiler room. Gas boiler maintenance. Question: What should a technician do during an annual technical inspection?

Question: The house has two bathrooms and a sink in the kitchen, what equipment should I choose for heating and hot water?

Answer: A double-circuit boiler may not cope with hot water supply. If significant water consumption is expected, it is better to purchase a single-circuit heating boiler and boiler indirect heating for DHW. A pipe runs from the boiler through which hot water enters the boiler coil. From it, due to heat exchange, the water in the tank is heated. In your case, the recommended boiler volume is 200 liters. The equipment is expensive. As alternative option you can consider installing a gas instantaneous water heater. The advantage of this solution is that in the summer, when heating is not needed, the boiler will not work, which will increase its resource.

Question: Should I pay attention to the type of ignition?

Answer: In gas boilers, the burner can be turned on in two ways. Piezoelectric ignition is performed manually by pressing a button. At the same time, a spark jumps and the igniter wick lights up. It burns constantly, even if the boiler does not heat, gas is still consumed. If it works protective automation, for example, when the power is turned off, in order to start a stopped boiler, you will need to press the button again. If the owner is not at home, the heating will be turned off until he arrives. Boilers with electric ignition do not have such disadvantages. They do not have a pilot light and turn on automatically.

Question: The apartment has a chimney, which gas boiler should I choose?

Answer: In houses with a chimney, gas boilers with open camera combustion. Combustion products will be removed under the influence of natural draft. Many buyers install a double-circuit boiler in place of an old gas water heater. The advantage of this solution is the lower cost of equipment and its installation. The disadvantage is that air is taken from the room, which is spent to maintain the combustion process. Therefore, they are recommended to be installed in boiler rooms, where it is easier to organize constant ventilation than in the kitchen. IN Lately, even if there is a chimney, gas boilers with closed camera combustion. They are considered safer because they receive air from the street.

Question: Which boiler, floor-mounted or wall-mounted, is better to install in a cottage for heating?

Answer: In a private house there is always a room that can be allocated for a boiler room. It can be equipped with either a wall-mounted or a floor-standing boiler. But the service life of the latter is on average 5-10 years longer. This is explained by the more reliable design of floor-standing boilers; in particular, they are equipped with cast iron heat exchangers. They are less demanding on operating conditions, namely on quality tap water. They are easier to maintain. If desired, a cascade connection of several floor-standing boilers can be arranged in the boiler room. In this case, the system will become even more reliable. If one breaks down, the other boiler will maintain heating. IN warm time years when less is required thermal power, half of the equipment can be turned off.

Question: What equipment should I choose if the gas pressure is low?

Answer: The problem of low pressure in the gas network is typical for our country. This is explained by the fact that gas is distributed from the production site to the consumer in three stages. First it passes along the highway with high pressure, then enters pipes with medium pressure, and then goes through gas distribution points with low pressure to consumers. The further the house is from such a point, the lower the gas pressure. If such a problem exists, you should avoid purchasing a boiler with an open combustion chamber. An atmospheric burner will quickly fail if there is not enough gas. Therefore, you should give preference to a boiler with a closed chamber. Considering that with reduced gas pressure the boiler power drops, it makes sense to choose a model with a reserve in this parameter.

Question: Recommend a traditional wall-mounted gas double-circuit boiler with a closed combustion chamber with a power of 24 kW.

Answer: When choosing dual-circuit gas boiler You need to analyze your need for hot water supply. You can choose equipment with a flow-through heating system, which can handle one bathroom and a kitchen sink. In this case, you can choose the appropriate option for the price. For example it could be economical option with a Baxi Main Four 24 F boiler or a more expensive German Vaillant turboTEC plus VUW with an improved regulation and control system, and a liquid crystal display. If there are significant needs for hot water supply, a boiler with a built-in boiler, for example, Ariston Clas B 24 FF, would be an excellent option. When the water supply runs out, it continues to operate in flow mode. But such boilers are always more expensive than ordinary ones.

Operating principle and device

Question: What does open or closed combustion chamber mean?

Answer: There are two types of burners used in gas boilers. In atmospheric combustion chambers - open. The combustion process is supported by natural draft. In order for it to function, a chimney is needed. Such a burner has a simple device: there is an ignition wick and gas valve. It works with minimal noise. The second type of burner is called a fan or forced-air burner. Air is forced into the combustion chamber using a built-in fan. Although the noise level is higher due to its operation, other advantages outweigh this disadvantage. A boiler with a closed combustion chamber does not need chimney. She needs coaxial chimney, which can be carried out in any house or apartment.

Question: How does a single-circuit gas boiler work?

Answer: The boiler consists of a burner, a heat exchanger and automatic devices, controlling the gas supply. When the appropriate signal is received from sensors and thermostats, the burner lights up. The water passing through the heat exchanger is heated to a user-specified temperature. Then it enters the heating system. The built-in pump ensures its circulation. A single-circuit gas boiler works only for heating. To obtain domestic hot water, you will need additional devices. This could be a gas water heater, an electric water heater or a boiler. The choice of the latter is optimal for high flow rates hot water, for example, in big house with several bathrooms.

Question: How does a double-circuit gas boiler work?

Answer: In double-circuit gas boilers, two circuits pass through the heat exchanger: one for heating, the other for hot water supply. They cannot work at the same time. When the user opens the tap with hot water, the automation turns off the heating and starts the DHW circuit. This feature should not be considered a disadvantage. No heating depending on external conditions The room becomes cold after about 2 hours. Continuous supply of hot water takes a significantly shorter period of time. The compact size of double-circuit gas boilers is noted as an advantage. They allow you to place this mini-boiler room in the kitchen of a standard apartment.

Question: What are the advantages of equipment with a built-in boiler?

Answer: A double-circuit boiler with instantaneous heating of water can provide hot water to 1-2 water points. Often, after opening the tap, you have to wait for heated water. More comfortable conditions provided by the boiler. By combining this device with a double-circuit boiler, the manufacturers created a single design. All devices are located under one fairly compact housing. There are both floor and wall models. They can serve several water points. There will be enough water. Firstly, a fourth of it should be added to the existing volume. After all, hot water will be diluted with cold water to a comfortable temperature for the user. An empty tank will immediately be filled, while heating will occur quickly, in flow mode. Finally, boilers do not suffer from scale formation like flow-through systems.

Question: How do traditional boilers differ from condensing boilers?

Answer: In traditional boilers, the energy obtained from gas combustion is spent on heating water. Part of it, along with combustion products, goes into the chimney. As a result, the heat is simply released into the atmosphere. Such losses do not occur in a condensing boiler. Before going into the pipe, gases and water vapor from the first heat exchanger enter the second. In it they cool, that is, they give off heat and turn into liquid. The resulting condensate is drained into the sewer. Thus, all the burned gas is used for heating without loss and is spent more economically. This is the main difference between traditional and condensing boilers. Due to the features of the device, the latter are more expensive and are produced only with a closed combustion chamber.

Question: What is a bithermic heat exchanger?

Answer: A bithermic heat exchanger is used in double-circuit boilers. Both circuits are located under the burner and are heated by its flame. The hot water supply line runs inside the heating circuit, which looks like a pipe within a pipe. The peculiarity of this design is that the boiler can heat only one thing. Structurally, priority is given to hot water supply, so when the water tap is opened, the heating is turned off. It will turn on again automatically as soon as the DHW consumption stops. This feature is not considered a disadvantage. The problem with a bithermic heat exchanger is the formation of scale in the hot water pipe, where the water is heated to 70 degrees and above. Overheating is caused by the coolant remaining in the heating circuit. A significant amount of scale impairs thermal conductivity and disrupts the operation of the entire boiler. Therefore, during service maintenance it is necessary to promptly clean the heat exchanger.

Question: What is a plate heat exchanger?

Answer: Some double-circuit boilers are equipped with a secondary separate heat exchanger for hot water supply, which is called plate. Heating in it does not come from the burner. When the user opens the tap, the coolant from the heating system is redirected through another pipe to the secondary heat exchanger. This allows you to limit the heating temperature of hot water to 65 degrees, which significantly reduces the process of scale deposits. Despite this, the plate heat exchanger also needs to be cleaned. Due to the complex design with small gaps between the plates, it is difficult to implement. It is often better to replace it. Therefore, the only advantage of plate heat exchangers is their small size, which makes the boiler more compact compared to models equipped with bithermic heat exchangers.

Care and maintenance, safety

Question: What should a technician do during an annual technical inspection?

Answer: Maintenance gas boiler is performed by a specialist service center before the beginning heating season. It is necessary to turn off the supply of gas and electricity. The boiler body is disassembled and cleaned (you can use detergents) combustion chamber, heat exchanger and nozzle, which must first be removed. Dust inside the boiler is removed compressed air. After the main components are installed in place, the technician will check the gas pressure. Then the nozzle is adjusted. Using special equipment that analyzes combustion products, the correctness of the settings is checked. They also pay attention to the serviceability of safety valves, sensors and pumps. Upon completion of the work, the boiler owner is issued a technical inspection report.

Question: How safe are gas boilers?

Answer: The gas boiler protection system includes a number of devices. The expansion tank absorbs the excess volume of water. If its container is overfilled, the safety valve will operate and the water will drain into the sewer. When the pressure returns to normal, the valve will close again. If these two elements are not included in the main design, then modern models practically never occur, they are built separately into the heating system. The gas supply is checked by an ionization combustion control device. If the flame goes out, it immediately stops supplying gas to the combustion chamber. TO protective devices refers to the traction control sensor. Systems are provided that turn off the boiler if the supply of gas or electricity is stopped or the volume of coolant decreases.

Question: Is it true that if there is a hood above the stove, a gas boiler cannot be installed?

Answer: This is not entirely true. The restriction only applies to boilers with an open combustion chamber. To burn fuel, it takes air from the room. Combustion products are directed into the chimney under the influence of natural draft. The hood can disrupt it. Harmful substances instead of the chimney, they will enter the room, which poses a danger to the user. This rule applies to any device with forced exhaust ventilation. Install a gas boiler with a closed combustion chamber. In it, air for the burner is taken from the street using a fan, and waste substances are sent there. Such a system is in no way connected with the air in the room.

Question: What are summer and winter operating hours?

Answer: At the end of the heating season, the user only needs hot water supply. During the cold season, both heating and hot water are involved in the operation of the boiler. In summer mode, the burner turns on only when the hot water tap is open. The rest of the time the boiler does not work. In winter mode, the burner reacts both to the DHW flow rate and to the readings of the sensor that controls the water temperature in the heating circuit. To switch operating modes, special buttons are provided on the control panel. Boilers with weather-dependent automatic control according to indications street sensor can independently switch from one mode to another.

Questions from users

Question: Which double-circuit boiler is better to choose if the power is often turned off, so that the power outage does not affect the heating operation?

Answer: A power outage will in any case lead to a shutdown double-circuit boiler. I can recommend using a block uninterruptible power supply + car batteries in case of power outages, if they do not happen often. Or use a more expensive system with a non-volatile boiler and boiler; the heating system is built in such a way that it can work with natural circulation, but in the usual case it runs on electricity.

Question: We wanted to buy a Lemax floor-standing boiler in a store. But the store told us that in this case the entire heating system would become too expensive. namely pipes, etc. Those. the pipes must be wider in diameter. In our version, there is a two-story house with a basement (where the boiler is supposed to be installed). The total area of ​​the house is 120 sq.m. And further. What is better, cheaper and more practical - a double-circuit boiler or a separate heating boiler and hot water boiler?

Answer: The option with a double-circuit boiler is actually equivalent to the option “single-circuit boiler + column”, in terms of reliability, but still, in the version with a column there are minor flaws. It will be much more practical to use a double-circuit boiler (we save money and space).

Question: How to choose a gas boiler to heat a residential 2-storey house with an area of ​​160 sq.m.

Answer: A regular 24 kW double-circuit boiler will suit you if there is a need for hot water for household needs.
Calculation of the power of boiler equipment for houses with normal thermal insulation can be approximately carried out as follows: 1 kW of boiler power per 10 sq. m of space, with a margin of 15-20%.
The easiest way to choose a closed or open combustion chamber is this: if you already have a chimney installed, then purchase a boiler with an open chamber, and if there is no chimney, then it is more economical to purchase a boiler with a closed one.

Question: What is the average gas consumption per month?

Internet-Plumbing and Heating hypermarket, b over 20,000 products!

Free delivery of goods by courier or pickup from the point of issue in Minsk and Lida,at a convenient time for you.

Just now! Annualdiscount for all goods - 2% !
Click " TO LEARN MORE " ! (bottom right)

When it comes to the economical use of equipment, it is important to take into account the service life of the gas boiler, because the more often it is changed, the more expensive the final operation of the entire system will be. Modern market similar units can offer many options various designs. All of them are effective under certain conditions. At the same time, in order to identify the most economical gas boiler for specific circumstances, you will need to familiarize yourself with their diversity.

Classification of devices

The basic criterion for choosing a boiler is its ability to heat the designated area. To ensure that the device does not operate at maximum loads, you need to choose a gas-efficient boiler with a small power reserve.

When choosing, experts recommend using an approximate value of 1 kW, which is designed to heat 30 sq.m. In this case, an insulated house with double-glazed windows and insulated front door. If any of the elements are missing, 10-15% should be added to the calculated value.

This indicator is conditional, but with its help it will be possible to select the necessary equipment.

It is worth choosing according to the accommodation option, because there are two large groups:

• floor boilers;
• wall-mounted boilers.

Floor-standing

The first option is in demand for heated premises with an area of ​​more than 200 m2. These units are used not only for direct heating of housing, but also to create a special microclimate in the room. It should be noted that the efficiency of such a gas boiler will be lower than that of their wall-mounted counterparts. However, this is compensated by a significantly longer service life, which, with proper care, reaches several decades.

Such indicators are achieved through the use of optimal materials involved in the manufacture of the heat exchanger. As a result, due to low operating costs for large areas, floor-standing units are considered economical gas boilers for heating a private home.

Most of them use cast iron heat exchangers. Due to the physical and chemical characteristics, the used cast iron grades withstand the effects of most negative internal factors. A good help is to use anti-corrosion materials that have effective additives that reduce the appearance of rust.

Wall mounted

A wall-mounted gas heating boiler has significantly less weight and smaller dimensions, so it easily fits on a vertical surface. Such a module must be connected to several systems simultaneously:

• gas supply for supplying fuel to the combustion chamber;
• power supply to start the automation and circulation of the water pump;
• heating system with expansion tank and required quantity consumers.

All economical gas boilers have a process control unit concentrated in a single place. Here you can set the temperature, get data on the current pressure, or turn off the device completely.

Wall-mounted boilers are characterized by the use of two types of draft:

• natural;
• forced.

Most economical gas boilers have coercive system. To implement it, an electric fan and a discharge spiral cavity are used.

The main operational processes are regulated using automation. The positive factors of wall-mounted boilers are as follows:

• saving useful space in the room;
• minimum weight that does not load the wall;
• in some cases they can be converted to run on liquefied gas.

VIDEO: Which boiler to choose - wall-mounted or floor-standing

Unit service life

Most modern economical gas boilers last about 7-12 years. Their service life is affected by the quality of the working elements in direct contact with water, such as the heat exchanger and pump.

The service life of a gas boiler largely depends on the quality of water.

In the presence of high water hardness, salt deposits occur. To improve the quality of the coolant, polyphosphate filters are used. Due to the use of polymer salts in them, it is possible to reduce the hardness value to acceptable levels. This reduces the cost of heating the coolant and thus contributes to fuel savings.

The operating period is affected by the intensity of work of mechanical elements, for example, in a pump. In this regard, it will be necessary to regularly maintain it, changing oil seals, gaskets and rubbing elements.

The service life of a gas-efficient boiler is also affected by the quality of electricity. Weak or excessively strong voltage has an equally detrimental effect on the operation of such components:

• automation;
• gas valve;
• ignition module, etc.

The situation can be corrected by using voltage stabilizers. They are able to maintain parameters with an accuracy of 3-5%, which will protect the boiler from failures.

It would also be a good idea to purchase an uninterruptible power supply or, at a minimum, network filter. Both devices are designed to preserve the electronic part of the boiler from failures in the event of a significant voltage drop in the network or a sudden shutdown.

Operational nuances

It is necessary to get rid of pockets of corrosion in the heating system. This is facilitated by removing air from the lines and radiators. This is especially important for open systems heating. To eliminate existing rust spots, it is enough to use special inhibitors (additives that enter into chemical reaction in the problem area).

In the summer, it is necessary to monitor the system for airing. It often helps to use the crimping method to closed systems and Mayevsky taps for open ones.

If the pressure in the system often drops, then it is necessary to immediately identify the problem, because it can result in failure of the units. The reasons for this situation are often:

• incorrect installation of the system without the necessary slopes, which leads to airing of the radiators;
• incorrect points for installing automatic air vents.

Ensures stable pressure in the system correct selection expansion tank. For approximately a volume of 60 liters of coolant in the system, a tank with a volume of 6 liters is needed. If there is more water, then obvious pressure drops may occur during the cooling/heating cycles, which will adversely affect the characteristics of the elements included in the system.

Carefully monitor the water pressure in your home's water supply system. If you are faced with a situation where, while taking a shower or washing dishes, the faucet suddenly starts leaking. cold water, then hot, after some time cold again, this means that the pressure is insufficient. The volume of water passing through for heating is not enough, which is why the burner randomly turns off and on. Pump up the pressure and then the boiler will operate smoothly.

VIDEO: Construction of a wall-mounted gas boiler

A gas heating boiler is a device that uses fuel combustion (natural or liquefied gas) to heat the coolant.

Design (design) of a gas boiler: burner, heat exchanger, thermally insulated housing, hydraulic unit, as well as safety and control devices. Such gas boilers require a chimney connection to remove combustion products. The chimney can be either ordinary vertical or coaxial (“pipe in pipe”) for boilers with a closed combustion chamber. Many modern boilers are equipped with built-in pumps for forced water circulation.

The principle of operation of a gas boiler- the coolant, passing through the heat exchanger, heats up and then circulates through the heating system, releasing the resulting thermal energy through radiators, heated floors, heated towel rails, as well as by heating water in an indirect heating boiler (if it is connected to a gas boiler).

Heat exchanger - metal container, in which the coolant (water or antifreeze) is heated - can be made of steel, cast iron, copper, etc. The reliability and durability of a gas boiler depend primarily on the quality of the heat exchanger. Cast iron heat exchangers are corrosion resistant and have a long service life, but are sensitive to sudden change temperatures and differ in significant weight. Steel containers can suffer from rust, so they internal surfaces protect with various anti-corrosion coatings, ensuring extension of the “life” of the device. Steel heat exchangers are the most common in boiler production. Copper heat exchangers are not susceptible to corrosion, and due to their high heat transfer coefficient, low weight and dimensions, such heat exchangers are often used in wall-mounted boilers, but the downside is that they are more expensive than steel ones.
In addition to the heat exchanger, an important part of gas boilers is the burner, which can be various types: atmospheric or fan, single-stage or two-stage, with smooth modulation, double.

To control a gas boiler, automation is used with various settings and functions (for example, a weather-dependent control system), as well as devices for programming operation and remote control of the boiler.

The main technical characteristics of gas heating boilers are: power, number of heating circuits, fuel type, type of combustion chamber, type of burner, installation method, presence of a pump and expansion tank, automatic boiler control.

To determine required power gas heating boiler for private country house or apartment used simple formula- 1 kW of boiler power for heating 10 m 2 of a well-insulated room with a ceiling height of up to 3 m. If heating of a glazed basement is required winter garden, rooms with non-standard ceilings, etc. The power of the gas boiler must be increased. It is also necessary to increase the power (about 20-50%) when providing a gas boiler and hot water supply (especially if it is necessary to heat the water in the pool).

Features of power calculation for gas boilers: nominal pressure gas, at which the boiler operates at 100% of the power declared by the manufacturer, for most boilers is from 13 to 20 mbar, and the actual pressure in gas networks in Russia can be 10 mbar, and sometimes lower. Accordingly, a gas boiler often operates at only 2/3 of its capacity and this must be taken into account when calculating. For more details, see the table for calculating the power of a heating boiler.

Most gas boilers can be transfer from work natural gas on liquefied gas (cylindered propane). Many models switch to liquefied gas at the factory (when purchasing, check these characteristics of the model), or the gas boiler is additionally supplied with nozzles (nozzles) for switching to bottled gas.

Pros and cons of gas boilers:

Boiler piping- These are devices for the full operation of the heating and water supply system. It includes: pumps, expansion tanks, filters (if necessary), manifolds, check and safety valves, air valves, valves, etc. You will also need to purchase radiators, connecting pipes and valves, thermostats, a boiler, etc. The issue of choosing a boiler is quite serious, so it is better to entrust the selection of equipment and its complete set to professionals.

Which boiler is the best? On Russian market gas boiler equipment has its own leaders in quality and reliability. The best manufacturing companies and brands of gas boilers are presented in an assortment:

"Premium class" or "Lux"- the most reliable and durable, easy to use, the kit is assembled like a “construction set”, more expensive than others. Such manufacturers include German companies

Heating for houses and apartments inevitably involves material costs. Consumers know that the price range for gas boilers, installation and service assistance is quite high. For this reason, many strive to do minimal costs for the purchase, installation and operation of boiler plants.
But not very expensive gas heating boilers may turn out to be unreliable and during the operational period may lead to problems arising. serious problems, and, consequently, additional costs will appear. In the worst case scenario, inexpensive boiler systems can mean your home is always warm. That is, when choosing economical gas heating boilers, the principles of rationality should be used.

The most economical are Navien gas boilers, which have a coefficient useful action, close to 100%. The efficiency of an economical premium class gas boiler has a maximum value of 94-96 percent.
The efficiency of a middle class gas heating boiler is much lower and is approximately 70 - 90 percent. As for the cost, the premium and middle class have a difference of almost half. For this reason, savings are a very tempting factor. But experts do not recommend purchasing very cheap Russian gas boilers. The problem is that over several seasons the difference in cost will be neutralized. And over the next few decades, owners will have to overpay significant sums for the operation and maintenance of a gas installation.
Types of fuel: which one to choose
A kilowatt of thermal energy will cost depending on the type of fuel chosen. It is a well-known fact that the cheapest type of fuel is natural gas. If your household has gas, then the question of choosing an economical boiler for heating the room should not arise before you. If you do not yet have gas, but it will be supplied in the near future, then it is worth buying a double-circuit gas boiler. The systems can also work on diesel fuel, as well as on natural gas. And during the transition from one fuel to another, it will be possible to avoid additional costs. Heating boilers gas Lemax require only a burner change, and the installation itself will operate on gas.

Economical gas heating boilers have one very important criterion- life time. Economical gas boilers continue to live for about half a century, while middle-class equipment will last about 10-15 years. But it has important not only the service life itself, but also how long it can work without interruption. Moreover, it is directly related to the terms of general operation. If you save thoughtlessly and buy a low-quality Mimax gas boiler, then in a few years you may face the unpleasant need to repair or replace equipment at the height of the heating season.
Boilers that run on gas can have two types of burners: atmospheric and inflatable. In an atmospheric burner, the process of formation of gas-air mixtures is carried out naturally. And in a forced or fan burner, gas is first pre-mixed with air, and then this mixture enters the combustion chamber. Economical Korean gas boilers have two forced-air burners. Fan burners produce more complete combustion of natural gas, which makes it possible to achieve the highest possible efficiency. This means that operating costs will decrease by 25-30 percent.

If your house does not have an area of ​​350 square meters, then you can safely refuse to install an expensive chimney. After all, the cost of buying a Ross gas boiler and its installation can amount to approximately 100 thousand rubles. Designate a separate room for the boiler room to reduce usable area at home is also not necessary. It is worth purchasing chimneyless, economical gas boilers. They will help you save on installation and chimney maintenance, which also will not take up much space in the house.

Automatic control boiler

Economical gas boilers must be supplied automatic systems management. Modern systems they are very easy to use, they are reliable, they provide comfortable temperature control in the house, which, if properly configured, allows you to save approximately 10-20 percent of fuel. That is, by reducing operating costs, installing a control system on a gas boiler will pay for itself in the first year and in the future it will help save you money.

Unfortunately, among consumers who install for the first time autonomous systems heating, trying to save on after-sales service. Indeed, if you refuse it, you can save 10-15 thousand rubles per year. But even after one season has passed, the focus of the burner may shift, carbon deposits may appear, and deviations in the operation of the automation and pump from the specified mode may appear. The error of the work, at first glance, is not great. But it leads to unjustified risk, a decrease in efficiency, and in connection with this, the cost of operating a gas boiler also increases. It is worth saying that it is still worth saving when purchasing a gas boiler, but this must be done competently and carefully, so that you do not have to regret it later.

Before installing a boiler, you should carefully consider the question of where it can be installed. It can be installed on residential floors in separate rooms and on ground floor, extension or basement. The area for installing the boiler must be at least fifteen square meters, and the ceiling must have a height of at least 2.5 meters. Must be installed fire door with the third type. Walls must have a fire resistance rating of at least 0.75 hours and, subject to design specifications, zero open fire limits. In the room where it is planned to install a gas boiler, lay sewer pipe, with a diameter of 5 centimeters or more. If the room is located on the ground floor or below, then you must make a separate exit to the street.

wall mounted boiler

At the expense of their small sizes, the place to install a gas boiler can be determined quite easily. Installation wall-mounted boiler can be done directly in the kitchen or in any other room. Wall-mounted boilers do not require free space and can be installed using wall mounts above other types of equipment or furniture that is located on the floor.

The installation of a gas floor-standing boiler is carried out as follows: a place for installing the gas boiler is selected, the pipes for the chimneys are prepared to go outside, and the heating equipment, connected to the water supply, with electrical network, gas pipeline network, chimney pipe. The place where the boiler will stand must be level and made of fireproof material. All filters that are included in the kit, as well as pipes that must be installed during connection with the city gas service. When connecting, a ball valve, a thermal shut-off gas valve, gas meter and an indicator of gas pollution in the room.

If you want to install the heating system yourself, then you need to be very careful when installing a gas boiler. Since, if even minor errors are made during installation, the consequences can be very serious, and you will have to spend a lot of money to eliminate them. Therefore, it is better not to rush during installation. All main tasks should be completed gradually, following all stages. If we talk about how long the installation will take, then experts recommend installing the boiler in the summer.

If your choice is a floor-standing boiler, then you should immediately think about where it will be located. After this, you need to connect gas pipes and install a chimney. In order to comply with safety standards, the boiler must be installed on special stands. To do this you need to prepare wooden formwork with a tedious area, fill a mold a few centimeters high cement mortar. The boiler can be installed on the stand after hardening.

It is worth remembering that the chimney pipes must be carefully insulated. This is required so that combustion products do not cool down in the pipe before they go outside. If carbon monoxide cools down in the pipe, it will lose its volatile properties and instead of going outside, it will return back to the boiler, and from the boiler to the room.

Installation of a wall-mounted boiler

If you want to install gas wall-mounted boilers yourself, then you need to purchase high-quality and reliable fasteners that can withstand the weight of the boiler. The location should also be chosen in advance, preferably close to the bathroom or kitchen. After this, you need to carefully measure where the fasteners will be installed. After this, the fasteners are put on the fasteners, proceed to the next stage of installation - install water and gas pipes. Don't forget to take care of quality pipes chimney.
When installing a boiler, you should definitely pay attention to the little things and details, as this is directly dependent on the operating efficiency and serviceability of the boiler installations. During installation, all nodes that are responsible for the safety of the system must be connected, not only inside, but also outside. The basic safety system includes protection against overheating, gas leakage, failure to remove smoke, and loss of electrical supply.

Material kindly provided by the site: http://www.otopimdom.ru/index.php?id=590 Recommended!

In buildings connected to the gas distribution system, it is advisable to install gas boilers - devices that are suitable both for ensuring the operation of the heating system and for heating running piped water. Owners are attracted by the long service life and relative low cost of operating this equipment.

In addition, a gas-fired boiler can be easily automated by installing temperature sensors and control elements. An extensive range of units allows you to choose the most suitable one for each specific case.

Compared to other models

The main advantage of gas boilers is their high efficiency - about 90%. The data sheets of some models indicate that their efficiency reaches 107-109%, but in reality this is only successful marketing ploy. From school course physicists know that not a single device in the world can have an efficiency of 100% or more than this value - otherwise the unit turns into a perpetual motion machine!

Below we will talk about why manufacturers inflate the figures. However, a gas-fired boiler is significantly superior to equipment of another class in terms of efficiency. A worthy alternative it can only be formed by a pyrolysis unit.

The next advantage of a gas heating boiler is its long service life, which is explained by the simplicity of the design. The equipment does not have complex components; all its main parts can be easily replaced.

The main element of the boiler is the burner - its device determines the method of fuel combustion and also affects the efficiency of the unit.

Only solid fuel boilers have the same reliability as gas boilers.

Another advantage of gas-powered equipment is its high power. Unlike electric and solid fuel boilers, gas boilers have proven themselves to be excellent for heating large spaces. At the same time, temperature control in all rooms is carried out with high precision: solid fuel and diesel boilers they do not have such a function.

Advantages and disadvantages

In general, the advantages of boilers gas heating These include equipment properties such as full automation, long service life, fuel availability and high efficiency. But the boiler also has disadvantages. Among them it is necessary to highlight:

• demanding operating conditions;
• the need for permission to install a heater from Gaztekhnadzor;
• lack of economic benefit when heating premises with an area of ​​less than 100 m2;
• Smoking of the burner due to equipment wear.

In Russia, one more factor is added to the listed factors: pressure drops in the gas distribution system. This can shorten the service life of the unit: if the gas flow is weak, the burner will begin to burn itself. Therefore, it is recommended to purchase gas heating boilers adapted to Russian conditions.

Classification and principle of operation

Depending on the functional features, there are two types of gas boilers: single-circuit - designed exclusively for heating the coolant in the heating system, and double-circuit - have a more complex operating principle, simultaneously heating both the coolant and running water in the water supply.

If desired, a single-circuit boiler can be equipped with an indirect heating boiler. This will allow you to heat water for household needs. True, the cost of a gas boiler with a boiler will be higher than if you purchase a conventional double-circuit unit. In addition, it will be more difficult to install such a heating complex.

A double-circuit boiler has its drawback - a long waiting time for hot water, especially if the distance between the heater and the tap is more than 7 meters.

By power

According to the presence of power stages, gas boilers are single-stage and two-stage, according to the method of fuel combustion - condensation and convection.

At the same time, condensing ones are considered more economical: their operating principle is based on the release of additional heat from combustion products. As a result, the life of the fire is extended without increasing the amount of energy expended.

By installation method

Based on the installation method, boilers are divided into two categories - floor-mounted and wall-mounted. The former have great power, but the latter are more convenient to use and take up little space. Floor standing boilers Available with inflatable and atmospheric burners. Inflatable burner – great option for households that are faced with the problem of pressure drops in the gas pipeline.

In addition, a boiler equipped with it is suitable for use with liquid fuel. In turn, the atmospheric burner has a device that allows it to operate silently. The combustion products are removed using natural draft through the chimney.

The design of wall-mounted boilers can also provide for natural draft. There are also models with forced draft: they have a shorter service life of individual parts that wear out during operation.

Peculiarities

It's all about the calculation method used by manufacturers. Maintaining the operation of a conventional boiler takes up to 6% of energy, while a condensing boiler takes up to 11%. The remaining heat is transferred to the water, and the manufacturer takes it as 100% by default. Therefore, in order to establish the exact efficiency of condensing equipment, it is necessary to subtract 11 from that indicated in technical passport indicator.

As a rule, the resulting coefficient is equal to 97-98%. This is much higher than that of heating boilers operating on solid or liquid fuels. According to the efficiency value with gas boilers Only electric ones can compete.

Gas and liquid fuel boilers have a similar design, the only difference is the burner. If you replace it, the heater can be converted to work with a different type of fuel. But it is not recommended to do this yourself, especially if we are talking about converting a diesel boiler into a gas one: for this you must obtain permission from Gaztekhnadzor.