Our home is always associated with comfort and warmth. Especially when it comes to the cold season. Therefore, it is very important to choose heating equipment that matches the characteristics of your particular home. Let’s try to figure out which floor-standing gas boilers for heating a house will literally become a guarantee of a warm atmosphere. We will learn the types, functional characteristics, and principles of operation of gas boilers.
Benefits of gas heating equipment
Gas heating equipment is widely used today in private houses and country cottages. Elementary, convenience, and safety of operation are the main criteria for the popularity of heating gas installations. They have several advantages:
- ease of use (equipment after installation does not need regular maintenance);
- the efficiency of use (gas fuel is the most affordable resource);
- automatic regulation of equipment operation;
- high performance;
- impressive service life;
- independent choice of the optimal mode;
- a diverse range of models and manufacturers of gas boilers (reviews of devices from popular manufacturers can be found on the relevant sites).
Modern gas boilers are made of heat-resistant materials (steel, cast iron), which explains their durability. The presence of an automatic mode (the automation scheme is in the passport of the device) makes boilers for heating a house safe to use and easy to control.
Floor standing gas boilers for home heating. Types of gas equipment
For the functioning of household gas boilers, gas (liquefied or natural) is used, which gives off heat during combustion to the heat exchanger of the device. Water passing through it is heated and distributed through the heating system. By location, boilers are divided into wall-mounted and floor-standing. For the installation of floor-standing gas boilers for heating a house, a special place on the floor or a separate room is allocated.
In order to decide which floor-standing boiler is best for your home, you need to have an idea of the types of equipment and the specifics of its operation. You can familiarize yourself with the diagram of a floor-standing gas boiler.
Floor standing gas boilers are divided into types according to the following characteristics:
- heat exchanger material (cast iron, steel);
- type of burner;
- the method of removing combustion products (atmospheric, forced);
- the number of contours (single-circuit, double-circuit);
- the scheme for moving the coolant.
The service life of a gas boiler depends on the material used in the heat exchanger. The cast iron version is characterized by resistance to corrosion and burnout. Such a device can last over 50 years, but it is quite fragile. The steel version is durable and resistant to deformation, but it is afraid of corrosion and is subject to rapid burnout (up to 15 years).
Selecting the power of the boiler for heating the house
The main indicator when choosing a floor-standing gas boiler for heating a private house is the power of the device. This indicator provides for the area of the room that needs to be heated. Today, manufacturers let in boilers of different capacities, capable of providing heat to both small private houses and complexes of several buildings.
In terms of power, floor-standing gas boilers are divided into single-stage, two-stage, and modulation (with smooth regulation). The two-stage boiler is equipped with two power modes. The circuit of the modulation installation is designed so that it is possible to regulate the power by smoothly changing it. For private houses with a small area (or with temporary residence), such boilers have received positive reviews. Which floor gas boiler is better for heating private houses in your area, consult a specialist.
Helpful advice! In order not to doubt the selected boiler power, the calculation should be performed exclusively by a heating engineer from a company specializing in this area.
It will be sufficient for the user to have the idea that 1 kW of power will be enough to provide heat to 10 squares of a room (up to three meters high). This value is true for a well-insulated home. If your home is not, you should choose a more powerful boiler. The choice of capacity also depends on whether the equipment is supposed to participate in providing hot water. If this is implied, then the power indicator increases from 20% to 50%. Owners of pools with a heating function should be guided by the choice of a double-circuit boiler with increased power for this load. The boiler power ratings are indicated for the nominal pressure. If the pressure is weak, then, accordingly, the power of the unit will decrease.
Single-circuit and double-circuit models
When choosing a floor-standing gas boiler for heating a private house, it will be necessary to determine the type and device of the equipment. Two options are offered: single-circuit and double-circuit. Single-circuit gas boilers for heating a private house are designed only for heating the heating system. Their design is such that they cannot function to provide hot water. Therefore, it will be necessary to additionally purchase a device for heating water or purchase models with a built-in boiler.
As for double-circuit gas boilers for heating a private house, they can work to heat the heating system and water for domestic needs.
The device of a gas floor double-circuit boiler for heating a house:
- gas stove;
- heat exchanger;
- expansion tank;
- circulating pump.
A double-circuit boiler operates so that if it is necessary to heat water, the heating system is turned off and the equipment operates to supply hot water. Since the use of hot water is not constant, the temperature in the heating system does not change significantly. The diagram of the device shows that for the correct operation of the equipment, it is necessary to connect the boiler to the heating system and supply it to the hot water supply mixers.
Helpful advice! When installing a double-circuit floor boiler in a private house, it is necessary to take into account the length of the pipe from the device to the hot water tap. The maximum length should not exceed seven meters .
The floor-standing gas boiler is large and heavy. Under it, you should arrange a place on the floor in the house (arrange/reinforce a screed) or place it in a separate room, and also provide a separate exhaust duct for removing spent fuel combustion products.
If your house does not have a centralized hot water supply, then it is better to choose efficient gas double-circuit floor boilers, which follow from the reviews.
Principles of operation of a gas boiler and types of combustion chambers
According to the functional principle, gas heating devices are divided into convection and condensing models. A convection boiler is distinguished by the fact that steam generated during gas combustion is also removed with the combustion products. In condensing models, steam and combustion products are directed through a heat exchanger, in which the steam condenses and produces additional heat. Which of these boilers is better, you cannot say for sure, since convection boilers have no risk of corrosion due to condensation. For their production, you can use less expensive material and their price is much lower (as evidenced by reviews). In addition, combustion products are removed by natural draft.
Condensing boilers have high efficiency due to the use of additional heat, but, along with this, heating systems must be equipped with oversized and expensive heating radiators. User reviews will help you navigate which option is better.
Combustion chambers in gas boilers can be closed or open. Both types of chambers are used in convection equipment. In the condensing one – only a closed combustion chamber.
In open chambers, due to natural draft, combustion air is taken from the room where the boiler is installed and removed through the chimney. These appliances use atmospheric burners. Devices with an open chamber must be installed only in a separate room and equipped with a vertical flue gas vent. Judging by the reviews, the cost of such boilers is quite low.
Helpful advice! When choosing a boiler with an atmospheric burner, take into account the fact that they work almost silently and for a long time, but at the same time they burn oxygen in the room.
Floor standing double-circuit gas boilers with a closed combustion chamber can be installed directly in a heated room. It uses forced draft – an electric fan pulls waste products out of the combustion chamber. The chimney has two pipes (one inside the other): an outer pipe for air intake, an inner pipe for exhaust. The performance of such boilers is very high, but such units work only when electricity is available. User reviews of such equipment are positive.
Heating schemes for a private house with a gas boiler
Heating systems in the house are developed taking into account what kind of coolant circulation is supposed to be – natural or forced.
Natural – carried out based on the difference in the density of water at different temperatures. Such a scheme is used when the location of the boiler is available at a level below the radiators and the appropriate slope for circulation is observed for the forward and reverse wiring of the system.
Heating wiring diagrams are single-pipe and two-pipe. With a single-pipe wiring scheme, the heating elements have different temperatures: the lower radiators receive water that is already partially cooled. And if the house has more than one floor, then the temperature of the radiators of each floor will be different. An additional increase in sections or installation of a lintel will help to avoid this. With a one-pipe wiring system, a small amount of material is consumed. This layout is usually used for small houses.
Two-pipe wiring requires a large consumption of materials, but the heating elements heat up the same way. The two-pipe distribution system allows you to regulate the water temperature in different rooms using shut-off valves.
For heating systems with artificial circulation, the use of a pump is characteristic, which means that its functioning depends on the power supply. Radiators in such a system also heat up unevenly and the formation of air jams is possible. Artificial circulation systems are simple and easy to install.
Floor standing gas boilers are the most economical equipment for home heating. In order for the heating system to meet the characteristics of your home, you need to make an accurate calculation and, on its basis, choose the best option for the system. A prerequisite is that the calculation is made by a specialist.