Circulation pumps for heating systems are becoming very popular today. The main advantage of the device is energy saving. The fact is that it accelerates the circulation of the coolant in the pipes and contributes to the rapid heating of the rooms. As for the design of the device, it is not complicated. The following elements can be distinguished: a body (steel, brass or cast iron), a rotor (ceramic or steel), an impeller that rotates the rotor, as well as an engine that ensures the operation of all elements.
It should be noted that the water level in the expansion tank remains at the same level, regardless of whether the device is turned on or not.
Circulation pumps for heating systems should be classified into two types - "wet" and "dry". If you use the first type of apparatus, then the rotor with the impeller is partially in the water. In this case, the unheated coolant can cool the running engine. In this case, special attention should be paid to the material of the case: it should not succumb to corrosion.
In "dry"pumps, the rotor does not come into contact with water, as it is separated from it by a special plate. This type of device can be classified in more detail into vertical, block and horizontal pumps.
"Wet" circulation pumps for heating systems operate for a long time without additional maintenance, they practically do not create noise. However, a big disadvantage of the presented device is its not very high efficiency. Therefore, it is best to use it in small houses or apartments. Although modern devices are already being produced somewhat improved.
Of course, regardless of the type of unit, it must be correctly placed in the system. For example, "wet" devices are only horizontal and can be installed on both the supply and return pipes. As for the actual installation, you can even do it yourself. Circulation pumps for heating systems are mounted using wrenches and bypasses. Additionally, it is necessary to install a filter that will not allow large debris to enter the device. Also on the pipe in which the bypass will be installed (the pipe that is parallel to the pump), it will be necessary to mount a stopcock. This will make it possible to use the design without a pump.
As for the question of how to choose circulation pumps for heating systems, then it is already necessary to pay attention to the length of pipes, conditionsoperation of the device, as well as the needs of each individual house or apartment. It is important to take into account the power of the pump and the speed at which it pumps the coolant through the system. It is best to choose a unit in which these two parameters can be adjusted. Too powerful devices should not be bought to protect yourself from unnecessary noise.
Now there are a huge number of manufacturers on the market: Lowara, DAB, as well as circulation pumps for Wilo heating systems. The choice of brand depends on its reputation.
