Many people remember than heat their homes a couple of decades ago – coal, firewood. And currently, were villages and towns that are not supplied with gas. But most of the settlements have long had the ability to heat their homes and a utility room with natural gas. Therefore, the Russian market offers a large selection of gas equipment, devices and designs for its installation. Gas-fired boilers differ in the type of use, principle of operation, size and the materials from which they are made. At the present time are becoming increasingly popular floor-standing gas boilers for home heating. So, discuss this option in more detail, let’s talk about how to select it.
The principle of gas outdoor boiler ↑
Outdoor gas Central heating boiler works on the principle of any other – heats the water that passes inside it. Outdoor gas unit is designed to operate on LPG or natural gas, which burns, gives off heat to the heat exchanger inside the device. Passing through the structure, the water is heated and heats the entire heating system.
To decide what kind of outdoor gas boiler ideal for heating right for you, you need to know about his device.
The most important part is the heat exchanger. It is made of different materials: steel, copper, cast iron. The choice of material depends on the efficiency and lifetime of the product:
- Steel. Made from steel heat exchanger, ensures a mechanical strength, resistance to cracking and deformation. The whole structure is light in weight. But steel tends to burn faster and can corrode. Boilers with heat exchangers made of steel will last about 10 years (depending on the type of steel).
- Copper. The elements of copper fairly quickly burned up, and are much more expensive than others, so at present, heat exchangers made of copper is almost not used. Boilers with copper heat exchanger is very rare to find on sale.
- Cast iron. Model heat exchangers which are made of cast iron, more durable. Since this alloy does not corrode and is very resistant to burning. The disadvantages of this material include its fragility. Heat exchanger made of cast iron may be deformed due to strong impact or sudden temperature changes. But with proper maintenance, the product will last more than 50 years.
Models outdoor boilers ↑
Outdoor gas heating boilers have one fundamental difference – they are double circuit and single circuit. The owners of private property have a choice, and before him to do, you need to see more with the device both options.
Single-loop ↑
The main and only function of the single-circuit option is heating. This model is not intended for heating water, connected to the functional elements for this purpose will not work. To provide building hot water, have to buy separate units. This equipment shall be installed so that the boiler and water heater are interrelated and form a common water heating system and heating. Each element of the structure responsible for its functions, does its job.
There are two ways of installation of this design:
- optimal. This option assumes that the output of the heat exchanger of the outdoor gas boiler and the device to the body of the boiler of indirect heating. This design provides a large volume of hot water per day;
- economical. In addition to the installed boiler instantaneous gas water heater. This system is more economical, but the amount of water it heats less. If you need to provide water not more than two points, such a full system will allow to do it.
But there are difficulties in the installation of the system with water heater as it is necessary to compare the capacities of two different units. In the case of single-circuit floor heating gas boiler has a capacity less than the water heater to heat enough water to supply the entire home will be problematic.
Choosing single-loop variant, pay attention to the following characteristics:
- voltage;
- power;
- type heat exchanger;
- dimensions.
So, single-circuit gas boilers, the heating devices that heat the water by the combustion of the gas and distribute it for the heating system.
Combi ↑
The fundamental difference between Combi outdoor boilers is that they can not only heat the room but to heat water.
Such models are optimal for the device in a small space, they can provide an Autonomous heating system and water heating without taking up much space.
Dual-circuit floor-standing gas boilers for home heating consist of the following elements:
- heat exchanger;
- surge tank;
- burner;
- circulation pump.
The design itself is self-sufficient, it is only necessary to correctly punch it in the heating system and water supply, to connect pipes with heat sinks and faucets.
The circulation pump has the function of filling with water heat exchanger of the boiler, raises the liquid level to the required. A constant supply of water is essential for proper Assembly and long life.
When working outdoor Combi gas boiler gives priority to hot water. That is, operating the heating circuit is deactivated when you open a hot water tap. The burner will only work on water supply, heating the water in flow-through mode.
Because of this feature, you need to count the approximate number consumed per day of hot water. This will depend on the number of bathrooms and sleeps in the house of the people. If you use the Combi variant in the big house for a large family, it may well be that you won’t need hot water, but will live in a poorly heated house that is not acceptable for the harsh Russian frosts. Therefore, for more complex conditions it is better to buy a Combi boiler with a built-in heater that will avoid the isolation of the heating circuit during the use of hot water.
The basic requirements for outdoor gas boilers ↑
In addition to the boiler, the requirements apply to the room in which it is installed. Matter the quality of the materials used for the equipment room. They must be heat-resistant, non-flammable and does not allocate at decay of poisonous fumes. The size of the room should be not less than 4 sq. m. the boiler must be located on a level surface, away from open flames and heating appliances. The approach to the unit should be free. The state and the organization of gas supply established the safety standards and monitors their implementation.
Modern models are designed with the safety, meet all standards and requirements. For example, the nonvolatile outdoor gas boiler in the event of a power outage will shut down the gas supply and extinguish the burner. When electricity supply is restored, the sensor will start the boiler automatically. This allows you to not think about the fact that your absence was the power cuts and the room is not heated until your arrival. Not all models are equipped with automation, is and mechanical. Additional features and amenities add value, so here everyone chooses itself. All models must be equipped with special detectors that react to any problem in work.
Conclusion ↑
The difference of wall and floor gas boilers is required the connection wall of the boiler to the mains. Outdoor the options are stand-alone structures. Over time they do not change dramatically, but their technical characteristics are improved. Outdoor boilers are becoming more powerful and economical.
Once a gas boiler is selected and purchased, it is necessary to think about installing it. How to install outdoor gas boiler find out in the next video
