Many people are having problems with a central hot water in an apartment or a house, decide to establish indirect heating boiler. It is considered cost-effective and easy to use. But there is a connection boiler Indirect heating? There are several basic methods, which are suitable both for an apartment and a country house.
What is it?
Indirect heating boiler - capacity cubic or cylindrical shape, inside which a heat exchanger, in most cases designed as a helical coil. As it passes coolant from the heating system, by means of which heated water in the tank. Such systems are well suited for small houses.
Water heater in most cases has no own heat source. It uses an external heating energy. This can be a central system or a separate boiler. Therefore, in each case uses its own connection diagram indirect heating boiler.
Connection to the heating system
These water heaters are installed in heating and water supply system. Everything to work well, you need to:
- cold water supplied to the lower part of the vessel;
- provide output hot top.
When this heating is applied so that the heat medium moved downward. It turns out that hot stream enters the upper pipe, and already cold out on the bottom. It is through this connection will be able to achieve high efficiency.
Connecting through the three-way valve
The basis of this type of connection used by the two circuits:
- heating;
- heating.
By using three-way valve, a uniform distribution between the two lines. The main priority is in the water supply system, and only then in heating.
In this control valve is not necessary - everything works automatically. For this purpose a thermostat which switches the valve during the cooling and heating system of the water supplied to the heater. When the heater temperature rises to the desired level, again changes the direction of fluid motion, and it is fed to the radiators.
In most cases installing indirect heating boiler is carried out in this way. The fact that the system is simply indispensable in the case of large amounts of water in the house.
Important! Setting the thermostat operating limits, you need to consider to what point will heat the liquid in the pot. Therefore, the device is recommended to set the temperature slightly lower than the heater. Otherwise the latter would have to almost always operate on the water heater.
Using two pumps
Another good option is to install a non-return valve and the two pumps. In this case, the control of each unit carried out the installation of its own pressurization. Connecting indirect heating boiler to the boiler in parallel to the other nodes, but it has a priority.
The circulation pumps are installed in front of the water heater and heating system. To control using the temperature sensor, which sends corresponding signals to the device.
Such a system is considered to be very suitable for heating, based on the two boilers. In this case one of them totally transmits energy to the radiators and has the second output and to the water heater.
In the case of the cooling liquid in the heater for heating the heating medium is sent, and when the temperature rises to the desired mark - switches to heating. The check valve is used, so that the coolant flows are not mixed together.
And there is no need to worry that this will affect the heating of the room. The water in these boilers is heated quickly - less than an hour. And because the room just did not have time to cool down.
Connecting low loss header
Connecting to the boiler Turbofan boiler using pumps often carried out by means gidrostrelki. Generally, such circuits are inserted into multi-loop system.
Basically, such an option is used if there are several heating segments. This may be a boiler hot water, radiators, floor and so on.
This sets the hydraulic module and the manifold. This will remove the possible pressure differences in different parts of the network.
Of course, you can set the balancing valves. But it requires special skills and experience. In addition, difficulties in use may occur in the future.
return circulation
This circuit is realized if the third input will be placed in the tank. To it is carried coolant recirculation connection. The main objective of this system - increase in feed rate of the heated water. As planned, it should be made immediately - when you open the tap. Thus fluid will overrun when the overflow occurs.
It turns out that created looped pipe on which are constantly moving stream. Is controlled circulating pump.
For proper operation of the indirect heating is carried out of the boiler installation, and some additional components, including:
- The check valve. It is installed at the entrance to the water heater. This helps to prevent ingress of coolant to the cold pipe when the pressure increases as a result of overheating of water.
- Automatic air vent. It is located in front of the check valve. This element is necessary to prevent excessive amounts of air into the pump before starting.
- Safety valve. Protects the heater from pressure surges.
- Expansion tank. This component will maintain a constant pressure even when the valves are closed.
Important! The surge tank pressure should not exceed the parameters that are set for the relief valve.
Boiler indirect heating is the most economical unit of the entire family of heaters. However, there are several options for connecting to different networks. One need only compare it with already installed heating and choose the appropriate one.
