Connecting an indirect heating boiler to a single-circuit boiler - diagram

Those who make sure that the organization of heating and hot water supply in the home is economical and efficient, always think about connecting an indirect heating heater. In the event that the construction is at the initial stage, it is necessary to think in advance how the connection of the indirect heating boiler to the single-circuit boiler will be realized - the diagram should be pre-compiled in the project. The necessary equipment can also be included in the existing scheme, which will be more economical. The features of the installation of this equipment will be discussed in this article.

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The principle of operation and device

The principle of operation is the effect of a thermos. Water does not heat up with such a boiler. Inside the device there is a heat exchanger through which the coolant passes. It is from him that the water inside the heater is heated. The device consists of two circuits, with the help of one of them heating is realized, and the second - water heating.

The device may have a different volume: from 30 to 1500 liters. Smaller volumes are mounted on the wall, the rest are mounted on the floor.

Important! Usually a 200 liter unit is enough to have enough hot water for the whole family.

Connecting an indirect heating boiler to a double-circuit boiler is very beneficial, since the efficiency of the device is very large - 90 percent. In the design of modern models there are additional electrical elements, heating elements, or there are opportunities in order to connect them. Due to this, they can be used as an auxiliary source of water heating, and in the hot season, you can turn off the boiler, which leads to a significant increase in its service time.

In a boiler of this type, there is a third entrance, which is needed in order to organize recycling. It is usually located in the middle of the device or slightly higher.

Important! Recirculation helps to get hot fluid from the tap instantly. It turns out so thanks to the constant flow of hot water in a closed loop.

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Advantages and disadvantages

Such equipment has a number of advantages, which are presented:

• Lack of additional energy costs;
• Stable hot water supply;
• Possibility of connecting various heat sources.

Of course, in addition to advantages, there are disadvantages presented:

• Fairly high cost;
• A lot of time to heat a significant amount of water;
• Large free space for installation of the unit.

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What does the system consist of?

The system consists of:

• Heating boiler;
• A pump through which water is continuously circulated;
• Three way valve;
• Branch pipes and hose;
• Boilers to maintain indirect heating.

Important! Water intended for heating does not communicate with heated hot water, so it can be used for any purpose.

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Connecting an indirect heating device to the boiler

The heating system is characterized by continuous circulation of hot water from the boiler. It is provided by its two main lines - supply and return.

Important! Most often, the equipment is carried out in the room where the heating device is located, which avoids laying multimeter communications.

The connection diagram is based on the radiator principle. The liquid heated in the tank through the supply line is fed into the boiler and the heating system, and then again it is in the boiler. Thanks to this, the water is heated as evenly as possible in all coolants.

We connect the boiler to the double-circuit boiler

The circuit is based on a double-circuit boiler. In this case, the water is heated at the same time, which will be used in heating and water supply.

Important! In practice, it is known that the use of liquid in large quantities from such a boiler adversely affects the heating system. Therefore, the liquid from the boiler should be consumed in a small volume, and water should be heated using a conventional boiler.

Connecting an indirect heating boiler to a double-circuit boiler has a fairly simple scheme:

1. Installation of a special three-way valve is carried out after a pump designed for water circulation. After heating the liquid to the temperature set on the built-in temperature controller, the valve closes, then the circulation of water through the heating system begins.
2. The temperature sensor is connected directly to the pump.
3. Priority is selected, and depending on it, the method of action:
4. For hot water supply, installation is carried out in parallel with heating.
5. For heating, we carry out the installation sequentially. In this case, you do not need to connect a temperature sensor.

Important! In order for the system to remain functional even in the summer, just installing a bypass and additional taps with which it is possible to turn off the heating of the radiators. If parallel connection is used, the bypass must be installed on the thermal head.

We connect the boiler to a single-circuit boiler

Standard single-circuit systems are not intended for heating water, therefore, for household needs, you need to use only a boiler.

Connecting an indirect heating boiler to a single-circuit boiler:

• Hoses and nozzles of the required diameter connect the equipment and the boiler.
• The system should also be equipped with a circulation pump and a three-way valve, which will operate when the liquid heats up to the required temperature.

Important! Such a system has one significant drawback: if the equipment fails, hot water will no longer be available.

For those who think how to connect an indirect heating boiler to a single-circuit boiler, the recommendations of specialists should be taken into account. They are as follows:

• The volume is selected based on the number of people living - for each about 20 liters.
• Grounding should not be forgotten.
• To compensate for thermal expansion and amortization of possible water hammer, it is necessary to install a hydraulic accumulator on the output line.
• Next to the equipment you will need to install a socket to connect the boiler.
• Highways should be equipped with cranes. This is necessary to easily turn off the equipment if necessary.

Important! How to connect the indirect heating boiler to the heating system? For greater efficiency, the boiler should be installed above the level of radiators.

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Stock footage

If the installation is carried out in accordance with all the rules, the room will not only be warm at any time of the year, but the boiler will work in a mode that is more gentle and economical for it.