Gas boiler: the device. Wall mounted gas heating boilers: operating principle and internal device

Gas heating equipment is by far the most popular and, as a consequence, in demand. This is due, to a large extent, to high availability of fuel. The received heat energy at combustion of natural gas is used for heating of various premises and objects. It is safe to say that such a method of heating and obtaining hot water will be popular for many more years, this is indicated, at least, by the increase in the production of natural gas throughout the world. Let's take a closer look at the gas boiler. The device and the principle of work - all this will be covered in the article.

Some general information

Most people today can afford to install such equipment. All that is needed for this is the presence of a nearby gas central tube and the permission of the relevant bodies. Further your business - you can put floor or wall pot. By the way, the latter are considered more modern and preferable, but we'll talk about this a little later.

It is worth noting that the gas boiler, the device of which is completely enclosed in a metal case, is a very safe heating equipment. Of course, it is necessary to remember the danger and possibility of leakage and therefore it is necessary to comply with all important rules. Another key feature is work in automatic mode. You will need to set the desired temperature and periodically add or bleed the coolant. Well, now let's go further.

Gas boilers: equipment prices

One of the first questions of interest to consumers is the cost of the unit. Of course, for the money spent I want to get a reliable and durable device that will provide the apartment or house with heat. As for the price, at most it depends on several factors, the key one is the manufacturer. It is from where the equipment was manufactured that its cost will be formed. For example, heating gas equipment of domestic production or, say, from Ukraine will cost you a bit cheaper than the same European counterparts. The products of Bosch from Germany can be rightly considered a reference. The quality of the equipment is at the highest level, and the accuracy of the work is sometimes amazing. But you need to understand that a boiler with a capacity of 24 kW will cost about 40,000 rubles. If you take a domestic analogue, then with the same parameters, the purchase will cost 10-15% cheaper. By the way, the second factor that affects the price is power. The higher it is, the more cost, do not forget about it when buying gas boilers. Prices for all equipment range from 12 000 to 100 000 rubles and above.

Number of loops

It is necessary to understand that some equipment is not designed for heating water for domestic needs. Such boilers are called single-circuit. Of course, two-circuit aggregates are more preferable. This is due to the fact that there is hot water and houses are warm. Nevertheless, if you put the boiler in a dacha where there is no need for heating the water, a single-circuit option is suitable. So you will save not only money, but also the area indoors.

Types of ignition

Another important point is the type of ignition. To date, there is manual (piezo-ignition) and automatic (electronic). It's hard to talk about a more or less preferred option. If you choose a piezo spark, you can be sure that even the lack of electricity in the house will not leave you in the cold, but due to the fact that such equipment is completely non-volatile. But there is a minus. For example, if the boiler goes out, you will learn about it when the room starts to get colder. Electronic ignition is good because the equipment ignites automatically. Even if the boiler goes out, it turns on itself. If you do not have problems with electricity, then it is such a gas boiler. The device is somewhat more complicated, as the amount of electronics is larger, but in return you will get comfort.

Key elements of the gas boiler

Regardless of whether you are using a wall or floor version of placement, the internal content will be approximately the same. "Filling" consists of the following elements:

• Gas burner - a rectangular shape with injectors inside. Through them, gas is supplied to the combustion chamber, and due to its uniform distribution, heat is distributed in a balanced manner.
• Heat exchanger - is a metal product in the form of a box. Inside there is a radiator with tubes, along which the coolant moves. This element is heated from the burner. A single-circuit boiler contains one heat exchanger, two-circuit - two - primary and secondary.
• A circulating pump is needed for forced circulation, that is, providing pressure in a closed system. Is on all models.
• The expansion tank is a kind of battery. They are equipped with all gas boilers for the house. It accumulates in itself a coolant when it is heated intensively.
• Automation - the equipment control unit. There is an electrical diagram of the gas boiler, which relies on the performance of the sensors during operation.

Principle of operation

Let's take an electronic single-circuit boiler as an example. After the first start, the hardware starts. At this stage, the temperature in the room is determined and the performance of the system as a whole is checked. Further, any gas boilers for the home include an ignition system. A spark is supplied with the fuel supply, and the burner starts to work. Gradually heat exchanger and coolant are heated. The latter with the help of a circulation pump through the pipes is transferred to the radiators installed in the apartment or at home.

As for double-circuit boilers, the main difference from the above described technology is that there is a second circuit that provides DHW in the room. It should be understood that two circuits can not work simultaneously. If you turn on the radiators, then the water does not warm up, and vice versa. But hardly this little nuance can be called a drawback of dual-circuit boilers, as, according to consumers, this does not cause any trouble.

Gas boilers: consumer reviews

It is extremely important to always pay attention to what ordinary consumers of such equipment write. Many users say that the two-circuit boiler is extremely convenient and effective. A small family of 3-4 people can provide such equipment with heat and hot water. But if the requirements are somewhat higher, then the installation of a boiler is required. Customers' comments indicate that modern gas boilers can prepare about 10 liters of hot coolant per minute. Ironically, the adherents of piezoelectric fires are more than electronic. Many people say that a sudden power outage on a winter night can spoil the whole mood, but this is the case with electronics. But if the gas boilers, reviews about which are simply remarkable, are non-volatile, then everything is at fault. Buyers are very popular with the equipment of companies "Ariston", "Bosch", etc.

Features, advantages and disadvantages of floor boilers

A few years ago, outdoor placement of heating equipment was extremely popular, now more and more often install wall-mounted boilers. Nevertheless, let's look at the features that floor units have. The main one is high power. The reason is that in most cases, weight and dimensions are not limited, say, 20 kilograms. For this simple reason, an outdoor gas boiler is the ideal solution for a summer house or a large house. In addition, no special foundation is required for installation, although it is still necessary to prepare a niche in advance.

The main drawbacks are the large size and complexity of the service. As for the dimensions, it is understandable here - great power is due to the dimensions. As for the complexity of periodic maintenance, this applies not to all models and largely depends on the placement of equipment. From all of the above, it can be concluded that the floor gas boiler is better suited for installation in spacious or basement rooms.

Description of wall-mounted boilers

Separate attention deserves equipment, which is placed on the wall. As a rule, these are electronic models that were actively launched 5-7 years ago. The arrangement of these units is somewhat more complicated, and the use of advanced technologies has made the gas wall boiler more compact. Another feature is a light weight. Usually it does not exceed 20-25 kilograms for medium-power equipment. This allows you to securely fix the boiler to the wall and not worry about the heavy load.

Of course, there are disadvantages. One of them is a small power. This is due to the fact that in most cases there are limitations in the form of dimensions and mass, and this does not allow to constantly increase the power, as, say, in floor models. However, at present the gas wall boiler is an ideal solution for small rooms where it is necessary to save space and there is no basement. In this case, the equipment placed on the wall will not interfere with you, and its maintenance is simplified at times.

A bit about the service

Modern heating equipment requires minimal periodic maintenance. Approximately 1-2 times a year requires the prevention of technology. To do this, call the master of the service company, and he performs the necessary work for a fee. The list of services includes: cleaning the burner, repairing it, cleaning the system, a heat exchanger, etc. In fact, the maintenance of gas boilers is a whole complex of works that can not be carried out without special preparation. Nevertheless, it is not necessary that all work be done by a specialist. Agree, with a drop in pressure in the system or growth, it's silly to call the master. Such work can be done on your own. To do this, there are two valves - one water is discharged, and the other one is launched into the system. You can also change filters for fine and coarse cleaning yourself, since there are no complications here.

Conclusion

That's all there is to tell about such equipment as a gas boiler. The device and the operating principle of the heating equipment we examined. Now you know what's best for you - automatic ignition or manual, floor or wall mounting. Do not forget that wall-mounted boilers have exactly the same device as floor-standing boilers. The difference can only be that the maintenance of gas boilers will have a different cost. In order not to remain in the winter in the cold, call a specialist who will perform preventive work more often. Given the fact that the quality of water in our country leaves much to be desired, it is necessary to check the interior of the equipment as often and more carefully as possible. On the copper tubes of the heat exchanger, scum can accumulate, which will prevent the free movement of the liquid.