Gas boilers for heating systems are currently quite in demand. According to statistics, the vast majority of equipment of this type operates on gas. This type of fuel is considered the most efficient and cheapest. The modern market offers various models of various configurations. For this reason, a completely logical question arises about how to choose a gas wall-mounted double-circuit boiler.
First of all, you should find out the most optimal type of fuel for your region. If you choose between single-circuit and double-circuit units, then you need to decide whether you need constant availability of hot water supply or whether it will be supplied from other sources.
As a rule, gas boilers are equipped with an atmospheric burner and come in wall and floor versions. In the latter case, the equipment is mainly made of cast iron or steel. It is impossible to answer unequivocally the question of which one is better, since each has its own advantages and disadvantages.
Main characteristics
So, finally, your house is connected to a gas supply system, and now there is a need to purchase specialized equipment for heating, using gas as a heat source. But before visiting the store, you should familiarize yourself with the selection criteria and the main characteristics of this device.
Gas-fired heating units may differ:
- The name of the manufacturer.
- At a price.
- Discharge of an energy source.
- Power equipment.
- The number of circuits (single or double circuit).
- The material used in the manufacture.
- Place of installation (floor or wall).
- The method of purification from gases obtained subsequently by operation (natural or forced).
Before choosing a gas wall-mounted double-circuit boiler, it is very important to calculate all the heat losses in the room and determine the required power of the equipment for the heating system.
Also, do not forget that the reliability and efficiency of the boiler unit depends not only on the material, but also on the operating conditions, as well as the quality of installation.
Equipment
The gas-fired double-wall boiler (average price - from 9000 rubles) consists of the following main components:
- Burner.
- Circulation pump (one or two).
- Expansion tank.
- Thermometer.
- Pressure gauge.
- Heat exchanger.
- Safety system.
Design features
The gas double-circuit wall-mounted boiler for the home, in comparison with other similar equipment, has some design features:
- Heat exchanger device.
- Dual or duplicate automation system.
- The dependence of the contours.
- The principle of operation of the hot water circuit.
Also, the features of wall-mounted boilers include the absence of chimneys. More precisely, their design, consisting in the withdrawal of the pipeline to the street through the wall. Through the same design, ventilation and oxygen delivery are facilitated to facilitate the combustion process.
Characteristic features of these devices are medium power and relatively compact sizes.
The vast majority of wall-mounted gas boilers are equipped with the following elements:
- As in any heating appliances (except for stoves), the heating circuit has a temperature control system.
- Independent system for setting the required temperature for hot water supply.
It is worth paying attention that in this case we are talking about independent temperature control on the circuits, while their operation depends on each other and on a specific model:
- There are options where, to ensure the required pressure and temperature of the coolant, temperature separation is required.
- For some models, when the water supply starts, the heating system needs to be stopped.
Benefits
Externally, the gas-fired heating double-wall boiler looks like a neat cabinet that fits perfectly into any interior. All the necessary elements are located inside it - the equipment only needs to be connected to the hot water supply and heating system. The main advantages of such boilers are:
- One unit is capable of simultaneously performing several functions - water heating and space heating.
- High security.
- A significant reduction in utility bills, since cold water is much cheaper.
- Compared to other versions of autonomous heating systems, equipment of this type is relatively inexpensive.
- Using automation systems allows you to simplify the setup and maintenance of the unit.
In terms of performance and size, these devices differ significantly from each other. Before choosing a gas wall-mounted double-circuit boiler, you need to consider many characteristics.
Criterias of choice
When choosing a gas boiler, you need to decide on such moments as:
- The degree of confidence in the manufacturer.
- Characteristics of the chimneys.
- The need for automatic control.
- Comfort level.
- Required equipment power.
After that, it remains only to compare the selected model with these characteristics and make your choice.
Power
It is believed that 1 kW of heat is required to heat 10 m 2 of living space. Thus, for a house with an area of ​​240 m 2, a double-circuit wall gas boiler 24 kW is needed. Power data can be found in the technical data sheet for a specific model, and this information is also often indicated on the packaging.
It is worth paying attention to the moment that the amount of heat required to heat an apartment or a private house, largely depends on the degree of its thermal insulation. Therefore, it is recommended to take care of this in advance.
Comfort level
Due to the fact that the outdoor temperature changes depending on weather conditions, there is a need for control over the operation of the heating unit. Today you can choose a model with the following type of regulation:
- Single stage.
- Two stage.
- Three stage.
In the first case, it means setting up work in only one specific mode. To control too high a temperature, you will need to turn off the device.
In models with two-stage power control, you can choose one of two modes: for warmer or colder outdoor temperatures. Compared with the previous version, this one is more convenient in operation. In addition, the ability to switch the operating mode of the burner increases the operating life of the device.
Three-stage models are also convenient and last longer. However, such devices are much more expensive, so most often consumers opt for the second option.
Automatic control unit
Most models from leading Western companies are equipped with an electronic control unit. This element takes the use of heating equipment to a new level. The presence of automation allows you to set the optimal mode of operation and timely indicates the need for repair or ongoing maintenance.
Typically, the control panel of a modern wall-mounted boiler unit is equipped with a liquid crystal monitor that reflects signals about possible malfunctions and technical characteristics of the device.
How to choose a gas wall-mounted double-circuit boiler
- According to the intended power consumption and appearance. Ergonomic design, shape, color - everything is important, but the required power is still crucial.
- The maximum allowable volume of coolant in the heating system for a particular model (indicated in the passport).
- The maximum flow rate of the coolant for hot water supply (indicated in the passport).
Manufacturers
Buy a gas heating double-wall boiler is not a problem. The main thing is not to make a mistake with his choice.
Today, the domestic market offers consumers equipment from Italy (Fondital, Beretta, Riello), Germany (Viessmann, Buderus, Bosch). Also very popular are the boilers “Proterm”, “Ariston”, “Vialant”, “Electrolux”, “Signal”, “Bear”, “Conord”, etc.
How to find a good manufacturer?
The high quality and excellent reputation of the equipment are far from the only points that you need to pay attention to when choosing a gas dual-circuit wall-mounted boiler (the price of these devices is indicated below). Indeed, not every foreign model is adapted to work in Russian conditions. Often, imported equipment is very sensitive to the quality of the coolant. During power surges in the electrical system, electronics malfunctions.
Another important point is the availability of service. Indeed, during frosts, delay can be catastrophic for the entire heating system. The situation is unacceptable when you have to buy component parts for repair in a neighboring region or country.
Gas wall boilers, double-circuit (Korea)
Heating equipment manufactured in Korea is a functional device that is manufactured using modern technology, as well as in accordance with international and European standards.
Against the background of similar units, gas wall-mounted double-circuit boilers (Korea), such as Navien, stand out for their ease of use, reliability and high quality.
The relatively small body of the unit at the same time combines standard components (a burner and a heat exchange unit), a control device, temperature and pressure sensors, a circulation pump, and much more.
The cost of such a boiler is from 30,000 rubles.
German equipment Vaillant
The double-circuit wall gas boiler "Vailant" is another excellent option from the German manufacturer, which won the great love of compatriots. Vaillant offers its customers a wide range of heating equipment of various capacities and capacities.
The double-circuit wall gas boiler "Vailant" is characterized by efficient and reliable operation, affordable cost, as well as cost-effectiveness of maintenance.
The cost of units of this manufacturer is from 48 000 rubles.
Boilers "Ariston"
Gas boilers from the Italian manufacturer Ariston are positioned on the market as easy-to-use and efficient heaters. The package includes a heat exchanger, control device, burner, circulation pump, expansion tank, as well as a well-thought-out security system. At the same time, gas wall-mounted double-circuit boilers "Ariston" in comparison with similar models are much cheaper.
These devices are used in the construction of new houses and the modernization of existing heating systems. All heating equipment "Ariston" is characterized by low noise.
The price of such devices is from 25,000 rubles.
Protherm Equipment
The gas wall boiler “Proterm”, presented by the Czech manufacturer, is a safe, economical and easy-to-use equipment. This company specializes in the production of heating devices of various capacities, not only wall-mounted, but also floor-mounted.
By purchasing a gas wall-mounted double-circuit boiler “Proterm”, you can be sure that this equipment has been tested for compliance with European quality standards.
The cost of such an aggregate is from 27,000 rubles.
Bosch boilers
Bosch is a leader in Europe in the production of water heating and heating equipment. A variety of models combines unchanging durability, reliability, quality and ease of management.
Double wall boilers "Bosch" are designed taking into account the peculiarities of Russian operating conditions. Thanks to a wide range, you can easily choose a heating unit that will fully meet the needs and financial capabilities.
The price of boiler equipment from this company is from 20,000 rubles.
Russian equipment Neva
Wall-mounted double-circuit gas boilers "Neva" is equipment from a Russian manufacturer, which can be used for local and centralized heating systems, heating of residential and industrial buildings, as well as for hot water supply.
Due to its compactness, such a unit will ideally fit into any interior. Integrated security systems and modern management create additional convenience and security for users.
The cost of boilers is from 17,000 rubles.