Circular pump device for heating and installation: Instruction + Video

Circular pump device for heating and installation: Instruction + Video TOP-3 circular pumps for heating. Increasingly, people are resorting to the use of technical innovations. One of the tasks of ennobling the house when using such is the heating system. The use of a heat supply network of pipelines is now less and less used without power equipment, which is based on a circular pump for the heating system. For this, special equipment is produced that pumps water under high pressure and which operates at elevated temperatures.

There are plenty of models and modifications to choose from.

But let's first understand the device and the tasks of the pump.

General information

Purpose of the pump

Individual heating systems in a private house are most often organized using running water and hot circulating water ...

The movement of the heating medium is a key factor in the operation of the heating system. For this, it is necessary to distinguish a pipeline circuit with forced and natural circulation. In the second case, thanks to the usual laws of physics, the flows of hot water will rotate in the system in a natural way - the heated water from the boiler will rise up, and after cooling down, it will drop due to gravity. This principle is suitable if you have a small house, but there are still risks of freezing pipes.

Why do you need a circular pump for heating? It is with the difficulties of the natural movement of hot water.

Such devices are installed in the heating system in the section where the return pipe is located, which connects the radiator equipment and the boiler. With proper placement of the pump and pipes, you will get a stable heat distribution throughout your home.


Circular pump device for heating and installation: Instruction + Video Two categories of devices should be distinguished, and namely models with "wet" and "dry" rotor. In terms of operating parameters and externally, they differ little, but when used, the nuances become more than obvious. So, with a "dry" rotor, the apparatus will vibrate and make a lot of noise, but it will be highly efficient.

A typical wet rotor device is characterized by a power plant that is constantly in the water. This is required for the element base and its lubrication, which will reduce the noise effect, but also reduce the efficiency, in addition, due to the contact of the coolant with the elements of mechanics, the water quality becomes worse, and this negatively affects the pipes.


Now it's time to consider the device of a circular pump for heating, as well as the main characteristics by which you can evaluate the performance of the equipment:

  • The volume of water that passes through the heating equipment in 1 minute. Those who are experts in assessing this parameter recommend equating the power of the equipment to the flow rate of the coolant. For example, if the power is 35 kW, then the pump should be selected with a flow rate of 25 liters of water.

  • Type of heat carrier.In the heating system, not only water can be used, but also mixtures, for example, antifreeze additives. This nuance should be thought out in advance, since the materials of the pumping structure have certain restrictions on use in terms of contact with chemical components.
  • Nozzle diameter. This is the characteristic that will directly affect the throughput and water consumption.

    For example, the popular marking of a pump for a heating system is 25/4, and this indicates the diameter in mm and the force of the head (meters of water column). On average, a 25 mm pipe passes 30 liters of water per minute, provided that the water column is from 4 to 6 meters.

  • Medium temperature. Maximum temperature load at which the pump operates. For modern models, this limit is up to 110 degrees.


Below is the rating of circular pumps for the heating system, which will make it possible to determine the choice of equipment for use in those or other conditions.

Grunfos ALPHA3

This is one of the best options in the segment of units for pumping heat carrier at the moment. The company is Danish, and it has been developing a line of pumps for heating systems for a long time, but now we are talking about 3-1 generation.

Here all the developments from the predecessors of Alpha are combined into the best views and new additions are included. From the working basic parameters, it can be noted that the branch pipe is 25 mm in diameter, the head of the column is 4 meters and the installation length is about 18 cm.

But the main thing is that you can control this circular pump.

The developers approached the issue with all seriousness, and created a proprietary application for a smartphone, in which you can control equipment over a distance. Thus, you can select the operating mode, diagnostic operations, error reading and more. At the same time, there is an emphasis on the rest of the equipment, if it is from the same manufacturer, that is, radiators, closed circulation or a floor heating system. For safety, there is an option to balance the system.

With the help of special sensors, the pump electronics will always monitor the hydraulics and provide adjustment recommendations.

Wester WCP 25-60G

This is the case when the product meets all the needs of consumers and is known only to specialists in this field. This pump is perfect for both one-pipe and two-pipe heating systems. The device works smoothly, is stable, and can withstand temperatures up to 110 degrees and a pressure of 6 bar. The body is cast iron, therefore it is a guarantee of the reliability and durability of the device.

Users noted that the pump is ergonomic, and also noted such a positive side as the ability to install equipment both horizontally and vertically, compactness and low noise level.

Belamos BRS 25 / 4G

This is a budget option from a domestic manufacturer, and you can buy a circular pump for the Belamas heating system for only 2000 rubles. This unit is versatile, but suitable for light loads. The maximum head is 4.5 meters, and the productivity is 2.

8m 3 / hour. But at the same time, users noted that the device has a high quality of work, and stably keeps the set temperature. This option is perfect because it counts on a certain amount and does not want to overpay.


To install a circular heating pump, it must be installed in the circuit by cutting into the pipeline with pre-installed shut-off valves from the side of the water source. Fill the system with water before use.

At that time, a minimum pressure reading should be set on the pipeline. After that, you can connect the system to the network and the required cable insulation, and the equipment will turn on.

In the future, as described in the technical manual, such pumps should be constantly checked for airiness. If modern models are used, then this will be done by automation.

In other cases, everything is done mechanically.

De-aeration should be carried out through the pump, opening the discharge valve at the highest point of the unit. Some other models have a special air outlet. At the same time, you do not need to try to remove air from the entire system, since it is difficult from a technical point of view.

Repairs and maintenance

The device requires periodic maintenance (approximately once every 3 months), and for this only a routine check of the design, the integrity of the components connection and cable. Automation must also be under control.

As for repairs, it will be more difficult to carry out it at home, although certain elements can be replaced without involving a specialist, but restoring structural integrity or repairing a rotor goes beyond home repair and the work should be given to a knowledgeable person. If a malfunction of the electrical internal contacts or a dry run is detected, it may be necessary to replace the pump not partial, but complete.


The operation of the heating system of a private house depends on a large number of parameters and factors that are caused by the pump. It determines how fast hot water will circulate through the pipes. We also highlight some of the best pumps according to experts.

Yes, now the quality has improved markedly and now a domestic manufacturer was able to get into the top three.


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