Most often, heating systems are able to fully function only when a circulation pump is installed. The price of such equipment will be mentioned below. It is also called a pomp. The device is necessary to maintain the desired level of fluid pressure in the heating circuit. This is its purpose, which is expressed in keeping the pressure at the right level, thereby the coolant overcomes hydraulic resistance, moving water along the circuit. Installation of a circulation pump may include several units of similar equipment in the system. In this case, one unit is installed in the heating boiler, while the other in the heating circuit. If the system has a well-functioning circulation pump, then it is not necessary to place the boiler at the lowest point of the circuit.
How to choose a pump
It is important to correctly select the circulation pump, it must meet certain requirements. Among them should be highlighted pressure, as well as performance. The last parameter indicates how productive the equipment is. It is necessary to calculate this characteristic provided that the device is minimally loaded. Among the additional requirements, we can distinguish working conditions, which are expressed in the volume of the heated room. It is important to consider the type of fluid, the diameter of the pipes, as well as the temperature of the coolant and the environment.
Considering external aspects, it is necessary to pay special attention to the noise level during operation of the device, the dimensions of the device, as well as the complexity of maintenance.
Selection of equipment by external factors
If you will be selecting a circulation pump, it is important to consider the fact that external conditions will affect its operation. The amount of heat that is needed to heat the room will depend on the ambient temperature. In some cases, this factor also affects the operation of the device itself, this is expressed in the fact that frozen equipment will not function as efficiently as heated.
If the unit is incorrectly selected, the pump may begin to overheat, this occurs when it cannot cope with an excessively high load. Before installing the circulation pump, you must determine the parameters of the heating system and boiler equipment that determine the characteristics of the pump. With a large diameter pipe, the water in the system will be larger, while the pump should be more powerful. Among other things, the coolant, which consists of a non-freezing fluid, has a viscosity that is different from the viscosity of water. This suggests that the pump should be more reliable and efficient.
Additional selection recommendations
When choosing a circulation pump for water, it should be noted that the equipment can work in tandem with a natural circulation circuit. Under these conditions, the load on the device can be very high. That is why in this case, experts advise choosing a pump with high performance and pressure.
Choosing a device with insufficiently powerful indicators, you may encounter the fact that the unit will not “push through” the system well, while the radiators will only heat up a little. The pump in such conditions often overheats, and then completely burns out. It is not recommended to install a 1-inch pump in 1.25-inch pipes using adapters. In this case, the desired pressure may not be provided.
Customer reviews of pumps from different manufacturers
The circulation pump , the installation of which you will perform independently, must be of good quality, and it is important to pay attention to the manufacturers. Models differ among themselves only in terms of operation and degree of reliability. As for the characteristics, almost all variants of the described pumps are similar to each other. The most common brands in the market for relevant equipment are: Wilo, Grundfos, Wester, Speroni. The first two brands are the most reliable, they are characterized by quiet operation and durability.
To make sure that the equipment works, if it is manufactured by these manufacturers, it will be possible by going to the device 10 centimeters. According to experienced users, the products of these companies have been working for years and do not imply the need for repairs. But these devices have one big minus, which is expressed in high cost, the price will be twice as high compared to products manufactured by other well-known companies.
If you want to save, then you should consider the other of the listed brands, under them are products that are considered average in terms of quality and price. It is this opinion that consumers adhere to. The equipment will work well, and problems can arise only in rare cases. If you need a circulation pump, the installation of which will be carried out by you yourself, then you should not, in order to save money, purchase Chinese products. According to the owners, sooner or later, such devices begin to make noise, the rotor breaks loose, the pump fails and burns out. Nothing can be said about the operating life. Users emphasize that Chinese-made pumps can last only 2 months or up to 2 years. The only advantage is the affordable price.
Installation
The circulation pump , the installation of which will be carried out by you yourself, is ready to serve the entire service life if the location of the tie-in into the pipeline is correctly determined . The wizard should select the position of the implement relative to the horizon line. The shaft of the electric motor must be strictly horizontal. Otherwise, air locks may occur which will leave the bearings without cooling and lubrication. Equipment under these conditions will quickly wear out and fail. Looking at the pump housing, you will see an arrow that indicates the direction of the coolant in the system.
The need to use a filter
The circulation pump, the installation of which should be carried out according to the technology, functions effectively in tandem with a mud collector, whose task is to filter the coolant. This addition can trap sand, abrasive elements and scale. If dirt gets inside the pump, the impeller and bearings may be destroyed. For the reason that the tie-in diameter for the installation of the pump has an impressive size, it is permissible to use a traditional coarse filter. The barrel that is needed to collect the suspension should be pointing down. This will eliminate the likelihood that the filter will interfere with the circulation of water.
Cost
The circulation pump, the price of which is 3600 rubles, is best placed on the return pipe, after an expansion membrane tank. Thus, the device must be in front of the heating boiler.
Conclusion
When arranging the system, it must be remembered that the duration of the plastic parts and bearings will depend on the level of water temperature. Be that as it may, the system needs a circulation pump, the pressure with its help can be normalized and returned to the standard value.