Double-wall gas boiler - how to choose?

A good option for heating equipment for the home is a gas double-circuit boiler. How to choose the right unit so that it satisfies all the requirements and works properly for many years? In this case, you should not trust advertising or sellers interested in sales. It is necessary to understand the nuances of the device yourself, to listen to the opinions of specialists and those people who have successfully used such heating for a long time at home. This article will help to understand all aspects of choosing a wall-mounted gas boiler.

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The choice of a double-circuit gas boiler by type of location

Double-circuit units can be floor and wall. Consider the features of each type.

Floor gas double-circuit boiler:

• For heating equipment in a large house, it will be advisable to purchase a gas boiler of the floor type. They are more powerful, but the dimensions are considerable.
• It is better to install them in a room specially designed for this - a boiler room.
• Many floor-standing boilers do not need to be connected to the electric network, which is a great advantage of installation in places with possible frequent interruptions in the supply of electrics.
• Such boilers are reliable and durable.

Important! Efficiency in floor units is higher than in wall units. Efficiency ratios become 90%, and sometimes rises higher.

Wall-mounted gas double-circuit boilers:

• The wall-mounted type of gas boiler is more popular because of its compact size, which makes it possible to install them even in high-rise apartments. Most often they are installed in the kitchen, mounted in furniture.
• All wall-mounted models are energy-dependent, as they include a circulation pump and a fan for forced draft. And such parts, as you know, work from electricity.
• The unit comes with brackets for mounting it on the wall.
• It is also imperative that an efficient ventilation system be installed before mounting gas equipment on a wall.

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The device and the main advantages of a gas heating device

Externally, this unit may not differ from the kitchen cabinet - everything you need without problems is placed inside the cabinet. The main task of the owner of the house after buying such a device is to connect it to a centralized gas supply line. Such a system has undeniable advantages.

Advantages of a double-circuit gas boiler:

• One device is capable of performing two tasks - to heat the room and provide it with warm water.
• Due to the fact that you will have your own hot water, accordingly - the cost of utilities to provide warm water is reduced.
• An indisputable advantage is the safety of equipment.

Important! Not a single case has been recorded that a double-circuit boiler for domestic use exploded due to excessive pressure.

• Relatively low cost of the heating system compared to other devices for autonomous heating and water heating.
• Such a device is fully automated, which means that you do not need to constantly monitor the status of its work.

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What dual-circuit gas boiler to choose for a private house? Key selection criteria

Consider the main parameters that are important in this device. Knowing them, the choice of a wall-mounted double-circuit gas boiler will be made easier.

The method of accumulating water

According to the method of water storage, boilers are flowing and accumulative.

Flow type. Unit Features:

• This model of the boiler heats the water during its circulation through the heat exchanger. That is, when the water tap is opened, the DHW circuit starts to work, and the coolant does not enter the heating system.

Important! When the faucet is open for a long time, the system cools down. However, the temperature in the house can drop a maximum of 1-2 degrees.

• Flowing devices have small dimensions, which is their clear advantage.

Storage boilers:

• Such boilers have a storage tank in their design. Each tank size can be individually selected by calculating the approximate consumption of hot water. The range of such devices allows you to do this.
• In the event of the opening of the water supply, the coolant does not stop circulating in the heating system, respectively - the opening of the water tap does not affect the air temperature in the house.
• Storage boilers have impressive dimensions, are relatively expensive.

Power

It is one of the most important selection criteria. When calculating power, it is necessary to take into account the following points:

• The area of ​​the room.
• Which double-glazed windows are installed in the house - single, double or triple.
• Thermal insulation.
• The ratio of floor space to windows.

Important! As a rule, this ratio is from 10% to 50%.

• The lowest temperature outside the house.
• The number of walls facing out.
• Type of room located higher on the floor (cold or warm attic, heated part of the house).
• Ceiling height.

Important! In a house with a large area, it is better to use several boilers of small capacity at the same time than a high-power one boiler.

Adjustment

Burner adjustment can be carried out in different ways, depending on the type of boiler. According to this criterion, one-stage, two-stage and modular units are distinguished:

• A single-stage burner is a device that operates on only one power - the maximum possible. This results in high gas consumption, therefore, such boilers are considered completely uneconomical.

Important! When installing such a device, you need to periodically turn off the heating system so that the temperature in the house can slightly decrease. Only in this way can you adjust the climate in the room.

• Two-stage burners allow adjustment in two modes, which is a fairly convenient option.
• The modular burner is a device with a multi-level regulator. Similar models allow you to set the desired temperature. Regarding gas consumption, such burners are economical, but the cost of boiler equipment is quite high.

Chimney Type

In a private house, one of the types of chimney can be installed - indoor and natural draft. The first is more convenient, but the second is a cheaper option.

Important! In a closed chimney, a fan is used, which helps to eliminate combustion products. Thanks to its efficient operation, such chimneys are a more preferable option; moreover, they can be installed not only in private houses, but also in high-rise apartments.

Automatic control unit

As a rule, in dual-circuit boilers, a liquid crystal display is installed, with which you can easily track the operation of the system and configure it, adjust the heating and heating.However, automated units have their significant drawbacks:

• Such boilers are more expensive than the order of 20-30%.
• The operation of the system is completely dependent on the availability of electricity. In the absence of electric energy in the network, the house will not be heated.
• An electronically controlled system immediately becomes more vulnerable and tends to break more often, and its configuration can result in a considerable penny.
• Many foreign boilers have non-Russian displays. This creates some inconvenience and leads to management errors.

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Manufacturer

How to choose a wall-mounted double-circuit gas boiler for a private house among a wide range of models, brands and manufacturers? It is generally accepted that the best quality floor and wall heating boilers are made in Poland, Finland, Germany.

Important! The most expensive are German, Finnish and Italian heating devices.

Among the most popular brands are the following:

• Neva.
• Navien.
• Ariston.
• Vaillant.
• Baxi.
• Beretta.

Important! The choice of a double-circuit gas boiler should be made taking into account the climatic conditions of the area where it will operate. Many manufacturers produce devices suitable only for work in the country of manufacture.

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A few more equally important selection criteria:

• If you plan to install closed equipment, then you need to consider the quality of the coolant. Otherwise, a situation may arise when the boiler is selected high-quality and efficient, but a bad coolant spoils everything.
• Buy a device that can easily be handed over to a service center in the event of a breakdown, that is, it must be in your area.
• When choosing, also pay attention to whether the unit has components that are powered by electricity.

Important! Often there are situations when, at small voltage drops, the mobile relay breaks.

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Connection of a gas wall-mounted double-circuit heating boiler

Installation and connection of a gas boiler takes place in two stages:

1. Connection to the wall of the circuit.
2. Connection to the gas distribution system of the circuit.

Important! It is quite difficult to carry out this process independently. This can result in an inaccurate connection, which will lead to a gas leak out, which threatens dire consequences, up to an explosion.

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Market offers

The modern heating equipment market offers a wide range of double-circuit gas boilers for an apartment. Which to choose? Consider the main proposals and their average cost.

Important! The average statistical cost of heating equipment of this type is in the range from 650 to 1600 dollars.

Vaillant

The most expensive and high-quality German Vaillant boilers are considered. They come in two series:

• Turbotec - with an open combustion chamber.
• Atmotec - with a closed combustion chamber.

Important! The cost of these boilers varies from 1100 to 1600 dollars.

The features of this brand are:

• Installation of a system of sensors that are completely isolated from the frame.
• LCD screen and built-in analog pressure gauge.
• Circuit frost protection system. Due to this feature, the boiler can be used in severe frosty conditions.
• The ability to work not at full capacity.
• Automated electronic ignition.
• The system of control over the technical health of the system. In the event of any breakdowns and interruptions in operation, the device emits a sound signal and displays the corresponding error on the display.

Beretta

The Italian manufacturer Beretta produces gas units for heating homes, which are somewhat cheaper. Their cost is on average in the range of up to $ 1,000.

Important! Experts recommend this brand of gas boilers for installation in the northern regions. Therefore, do not be afraid to buy goods from warm Italy, the products are quite suitable for heating a home in a harsh winter.

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Stock footage

For heating a private house or apartment, double-circuit gas boilers are an excellent option. How to choose such systems is a difficult question, and it can be difficult for an ordinary person to decide on a model. Therefore, it is worthwhile to study all the basic parameters of the devices in advance and take into account all the individual factors of your home. The information from the article will be useful to you in this important matter and will help you choose a high-quality and reliable boiler.