Unfortunately, central heating is not available in all private houses. However, each of us wants to live in comfort, warm and comfort. To do this, you should take care of the heating of your home and pick up a quality heating boiler for a private house. Given the diversity of proposals available in the modern market, the right choice in favor of this or other heating device is quite difficult. Therefore, we will tell you about all the intricacies and nuances of the work of modern gas boilers, which are most suitable for heating private houses.

Characteristics of gas boilers

So, there are several varieties of boilers, depending on what kind of fuel they work:

1. Electric.
2. Solid fuel.
3. Liquid fuel.
4. Gas.
5. Combined options.

Gas boilers are the most common heating devices that are used to heat residential premises. Modern gas aggregates have a large efficiency and economical enough, and also differ in a high degree of automation, which is quite important for users.

The principle of operation of the gas boiler is built on the transmission of heat of waste gases that are formed from fuel combustion. Simply put, gas is served in the combustion chamber, where he burns, giving heat to the heat carrier, which passes through the copper heat exchanger. Next, the coolant for a closed system is supplied to the radiators, which heated the room. The boiler does not work constantly, thanks to the thermal sensor that can be installed in the room, it automatically turns on if the room temperature drops below the specified value and, accordingly, when the room warms up, it turns off. Such a scheme of work helps maintain optimally comfortable temperature in the house, while saving gas.

The unconditional pluses of gas boilers are:

• A large degree of automation (the unit can work independently for a long time without human intervention).
• Easy regulation of operation modes.
• Environmental purity (in comparison with liquid and solid fuel plants).
• Small sizes of even high-power boilers.
• The possibility of using an aggregate for both heating and water heating (two-circuit boilers).
• Availability of fuel storage.

But gas boilers have their drawbacks. Their automation provides for the constant presence of electricity, in the absence of which, it simply turns off. In addition, modern gas installations of capricious gas pressure in the system. If it is less specified by the manufacturer of the value, and this in our gas networks is found quite often, especially in winter, the unit will automatically turn off.

Options for gas boilers

Gas boilers differ in several parameters:

• By type of burner used: with atmospheric burners or with fan. The second type of burner has an artificial compulsory air precipitation, which increases the pressure of the supplied gas. Such aggregates can also work on liquid fuel, for example, diesel.
• At the place of installation: Outdoor and wall mounted.
• According to the method of removal of gases: chimney and turbine. The latter can work without chimney, but electricity is necessary for the operation of the turbine.
• According to functionality: single-mounted (such installations are capable of heat only the main coolant) and dual-circuit (these aggregates are heated both coolant and water intended for domestic use).

Choose a gas boiler for home

When planning and building a house in our latitudes, one of the most important issues that is facing future owners is what to install the heating system. Indeed, in the conditions of our winters, the wrong selection of heating equipment can deliver a lot of problems.

Nowadays, the choice of various heating systems is really great. But gas heating remains the most popular among country cottage owners. How to choose a gas boiler? It is better that specialists engaged in the choice of gas boiler, but if they are missing, you will have to do it yourself:

• Rate the area and the floors of your home. For a small one-story building, it makes sense to buy a double-circuit wall boiler, which will provide both heating and heated water. For large houses you need to buy separate water heater and gas boiler.
• Evaluate the gas pressure level in the system, and if it is low, it is better to buy a fan burner boiler.
• When choosing a boiler power, as a rule, use a simplified formula - 1 kW of power per 10 square meters of room area with a ceiling height of 2.5 meters. If the boiler is double-circuit, i.e., it is also designed to heat the water, then another 25% must be added to the calculated power. Of course, this is an approximate calculation, and if the future homeowner wants to more accurately calculate the necessary power of the unit, then he will need to refer to specialists who will carry out the necessary measurements of thermal conductivity of windows, walls, etc.
• When buying heating equipment, it is also necessary to take into account its economy. The boiler must necessarily have adjusting the supply of fuel so that, depending on the temperature conditions, the homeowner could choose the optimal mode of operation of the boiler.
• You also need to pay attention to the ignition system. In some boilers, it uses a constantly burning stall to turn it on, which additionally burns to 10% of fuel. It is better to buy gas boilers with an electrolyzhig.
• When choosing a device, you need to consider the fact that cast-iron boilers serve almost twice as long as, although, and have much more weight than steel.

Cast iron gas boiler outdoor type

As mentioned above, the most reliable aggregates for heating at home are floor gas boilers from cast iron. The cast iron gas boiler of the floor type is often used as a heating unit for private houses, country and economic premises. Especially, this type of heating unit is preferable if the gas line runs next to the main gas boiler (the main version of the boiler for the boiler).

The principle of operation of the cast-iron gas boiler is based on the heating of the main coolant, the heat of which is given to the room. As part of a natural main gas supplied as a fuel for a cast-iron boiler, methane CH4 is located (more than 90%) and other hydrocarbons. In order to protect the boiler operation, and immediately determine the presence of gas leakage, odorates are added to its composition (for example, ethyl mercaptan), which give fuel specific odor. Additional safety during the operation of the device can provide an automatic control system.

The advantages of the cast-iron boiler are as follows:

• High efficiency - about 95%.
• Such aggregates do not depend on the supply of electricity.
• The automatic control system, which is equipped with cast iron boilers, allow you to turn off the device in the presence of leaks or in the absence of thrust in the chimney.
• Such devices are easy to operate.
• Durability. Thanks to the reliability of cast iron, like a material, boilers from it serve several decades. In addition, in such devices from the cast iron, not only the housing itself is manufactured, but also the heat exchanger.
• Corrosion resistance. Thanks to the special casting technology and a cast iron boiler, the surface of the unit is covered with a special layer, so that the corrosion cannot penetrate inside the parts.
• Wear resistance. Due to the strength of the cast iron, the surface, poured from it, is resistant to various mechanical damage, scratches.
• Cast iron boilers are quite powerful. The data range of these devices ranges up to 2000 kW. Due to high power indicators, cast iron units can heat the rooms with an area of \u200b\u200bmore than 230 sq.m.

Disadvantages of the cast iron boiler are also available. These include the following:

• Massiveness. As is known, installations made of cast iron are massive and large.
• Low resistance to thermal shutters. Heat exchangers made of cast iron have a large sensitivity to heat supplies. This disadvantage can be minimized only when the operation of the device is carried out in compliance with all safety rules.

Installation instructions for gas floor boiler

Fundamental rules

Installation of this equipment can be completely carried out on their own. The only thing that cannot be done independently is to connect it to the gas supply system. This should only do certified specialists. Otherwise, you have to pay a considerable penalty for unauthorized connection. The assembly of the system itself and the installation of the boiler for the workplace can be made on their own if there are certain locksmith skills.

Since gas cast iron boilers are produced only in the outdoor performance due to their considerable weight, they should be installed in a separate room - boiler room. According to the rules for using gas devices, certain requirements are presented:

• Thus, the height of the ceiling in the room should be at least 2.5 meters, and its cubature is at least 4 m ³. This parameter depends on the power of the boiler - than it is more, the more air is necessary for work.
• Mandatory is the presence of a minimum of one window for access of fresh air. The doorway leading to the boiler should have a width of at least 80 cm, while between the door web and the floor should be a clearance of at least 30 mm.
• If wall boilers are produced with a system of forced thrust due to the operation of the turbine, then cast-iron floor boilers must be connected to chimney to remove burning products due to natural traction.
• The distance from the boiler to electrical and gas devices should be at least 3 meters.
• The flooring at the installation site of the cast-iron gas boiler must be reinforced cement coupling, as well as the installation of the steel plate. The galvanized steel sheet should be located under all the bottom of the heating device, and from the front side - to perform at least 300 mm beyond its limits. The wall of the wall, through which the chimney will undergo, should be covered with refractory material.

Chimney Mount Rules:

• The chimney itself is one of the most important details in the boiler. Through it removes carbon monoxide, which is dangerous for human life. It is the trouble-free work of the chimney that is the key to the safe operation of the boiler. It is desirable that the chimney pipe does not have any turns. If this fails, it should not have more than 3 bends. Otherwise, poor-quality thrust can not only reduce the efficiency of the boiler, but also to make its exploitation of health.
• The manufacture of chimney is allowed only from chemically resistant materials. Its height above the roof level should be at least 500 mm. But this parameter depends on the distance to the skate and the angle of inclination of the rafter.
• The diameter of the chimney for each boiler is specified in the manufacturer's instructions. It is unacceptable to deviate from it, especially when it comes to deviations in a smaller side. When installing the chimney, it is necessary to consider the presence of an audit opening to remove soot and other combustion products, as well as the condensate sump.
• The most optimal form of chimney is cylindrical. Lack of angles - improves aerodynamics and increases traction. The nozzle between the boiler and the flue of the chimney should be at least 25 cm.

When installing an outdoor boiler, it is necessary to remember that such models have more power, so it is possible to use them only in private houses.

Phased installation of the cast-iron boiler

Before starting the installation of the heating device, you must carefully read the instructions and the manufacturer's requirements for installation:

• After installing the boiler to the workplace, it is connected to the chimney and check the thrust.
• Then the boiler connects to the heating system (feed and reverse). Before the input of the return to the boiler, a filter is installed to clean the coolant.
• After that, the boiler connects to the water supply. You can do it in the near-point point from the introduction of the water pipeline to the house. This will provide normal pressure in the system, and, accordingly, the normal operation of the boiler.
• When connecting the boiler to the heating and water supply system, locking cranes must be installed. Thanks to them, the possibility of revision and repair of the elements of the system will appear.
• The last step with the help of specialists the boiler connects to the gas supply.

Cast iron gas boiler: video