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Powerful circulation pump for heating. Parameters and marking of circulation pumps for heating systems

Surface pumps are designed to pump water from wells, boreholes and any water bodies to a site or to a house. The general principle of operation is this: the pump is installed on land, and the hose is immersed in water. When choosing a surface pump, you should pay attention to the following characteristics:

The power that determines the performance of the pump. The higher this indicator, the greater the expense per unit of time the device can provide. It is necessary to calculate the approximate consumption and, based on this, choose a pump of suitable capacity so as not to overpay.
The suction depth and the lifting height, which determine how deep the hose can be immersed and at what maximum distance from the source water can be transmitted.

unique templates and modules for dle

Top Conventional Surface Pumps

The installation of conventional surface pumps is carried out outside the source, connecting the apparatus with it through a conventional hose. In the case of year-round use of the pump, it is required to provide for protection of the housing from low temperatures, since water frozen inside the working cavity can lead to breakage. Typically, the capacity of a household surface pump is designed to pump water from a depth of 10 meters. The advantages of such devices are simple installation, primitive design and high mobility.

3 JILEX Jumbo 60/35 NC

It works at 1 ° C
Country Russia
Average price: 6 649 rub.
Rating (2017): 4.0

The universal pump JILEX Jumbo 60/35 HK closes the top three of the best conventional surface pumps. This is the best model in terms of price, performance and quality. With a power of 600 watts, the device provides a performance of 3.6 cubic meters. m / h, allowing you to use the pump as the main one to provide the house or plot with water. Among the competitors in the rating creates a maximum pressure of 35 meters, which can be adjusted. It has a built-in ejector, which greatly simplifies installation.

The strengths of this model, buyers include the presence of all the automation in the kit, the lack of a built-in check valve and a standard pressure gauge. A distinctive feature of the device is the ability to work with water, the temperature of which is only 1 ° C, which allows the device to be operated in extreme conditions. Among the minuses are noisy work and a plastic outlet to the hose, with which you need to be careful not to damage it.

2 Wilo PB-088EA

Best price. Popular model
Country: Germany
Average price: 4 108 rub.
Rating (2017): 4.0

Budget model Wilo PB-088EA is in second place in the ranking of the best conventional surface pumps. Despite the low cost, the device works well and does not cause complaints. The pump has a small power - only 140 watts, but it is enough to create a head up to 9 meters and provide a performance of 2.4 cc. m / hour. The peculiarity of this model is working only with clean water, but its temperature can reach 60 degrees. Thanks to the outlet ”, all standard hoses are connected.

Buyers highlight ease of use, low cost and easy installation as the strengths of the model. The successful design of the working area allows you to use the pump for pumping water with a temperature of 2 ° C. The device is equipped with overheat protection, and will automatically turn off if overload occurs. The disadvantages of this device are the unsuccessful design of the pump mount and the noisy work. In general, at such a cost, a worthy model for their tasks.

1 Grundfos MQ 3-35

Top specs
Country: Denmark
Average price: 20 180 rub.
Rating (2017): 4.5

The ranking of the best conventional surface pumps is led by the Grundfos MQ 3-35. A powerful (850 W) device provides a throughput of 3.9 cubic meters. m / h, which allows uninterrupted supply of water to the whole house. To increase the pressure in pipelines, a function of increasing pressure is provided. The maximum immersion depth of the hose is 8 meters, so that the pump can be operated to pump water from wells and deep wells.

Among the advantages of this model, customers note high reliability, unpretentiousness to external conditions and quiet operation. The maximum temperature of the water with which the pump can operate is 35 degrees. The dry run protection provided will save the pump in the event of an unexpected water failure. Convenient electronic shutdown allows you to quickly suspend the device. The disadvantages include overpriced and unstable operation after prolonged downtime.

Video review

The best circulation pumps for heating

Circulation pumps for heating are used for forced circulation of water in a circle. Devices can work with hot water, since the main area of \u200b\u200btheir application is heating systems. Devices create pressure drops that help liquids overcome the resistance created in the pipe. When choosing a circulation pump, you should pay attention to the pressure created, which determines how large the system can handle the device, performance and the maximum temperature of the water with which the device is able to work.

Grundfos is the leader in sales of circulating surface pumps. . Grundfos - Danish concern, the most popular and reputable company for the production of pumping units. The volume of production is more than 16 million products per year. The main office of the company is in Denmark, and the main production facilities are located in Germany. Therefore, Grundfos pumps are often called German, as evidenced by the high build quality. In 2005, the Grundfos pump manufacturing plant was opened in Russia (Moscow Region).

3 Wilo Star-RS 25/4

Silent work
Country: Germany
Average price: 5 100 rub.
Rating (2017): 4.5

In third place ranking of the best circulation pumps for heating, the Wilo Star-RS 25/4 model is located. Thanks to the power of 68 W, it creates a pressure of 4 meters and provides a capacity of 3 cubic meters. m / h, which is enough for heating a small house. The pump is demanding on the quality of water and works only with a clean coolant. But he is able to pump water with a temperature of 10 to 110 degrees.

Among the strengths of this model, customers distinguish quiet operation, high reliability and good power. In addition to this, all the necessary fasteners are supplied with the pump, which greatly simplifies its installation. The disadvantages include the ill-conceived control system of the device, for example, the lack of a switch on the case.

2 GILEX Compass 25-40

Best price
Country Russia
Average price: 2 669 rub.
Rating (2017): 4.5

The second place in the rating of the best circulation pumps for heating is occupied by GIELEX Compass 25-40. This model with a power of only 65 watts is able to provide performance up to 3 cubic meters. m / h, which is comparable with many TOP models. The maximum pressure created is 4 meters - this is enough to work with most heating systems. The pump operates in a wide temperature range - from 10 to 110 degrees, which significantly increases its service life.

The advantages of this device, users include small dimensions, the presence in the kit of the necessary fasteners and build quality. The pump nozzle has a diameter of 1 ”, which makes the unit perfectly suitable for most pipelines. Among the shortcomings, the absence of a cable is highlighted (it is necessary to separately purchase it and independently connect it to the pump).

1 Grundfos UPA 15-90

The most popular circulation pump for heating
Country: Denmark
Average price: 5 754 rub.
Rating (2017): 4.0

The Grundfos UPA 15-90 model is in the lead in the ranking of the best circulation pumps for heating. This is the most popular device on the market, as evidenced by a large number of positive reviews. With a relatively small size, the device boasts a power of 118 watts, which is significantly superior to competitors. If necessary, there is the possibility of increasing pressure using a special regulator. The throughput is low - only 1.5 cubic meters. m / h, but it is enough for heating any apartment.

The advantages of this model according to customers - high reliability, quiet operation and ease of installation. In addition, the pump is equipped with dry running protection, which will automatically turn it off when there is no water supply. The device operates in the temperature range from 2 to 60 degrees. The disadvantage is inconvenient manual control. In terms of parameters, this is the best circulation pump for heating.

The best sewer installations

Sewer installations are used to collect and dispose of wastewater. The devices have a sealed enclosure and small dimensions. They are used in cases where it is not possible to divert waste water by gravity. The main advantage of the plants is the lack of maintenance. The device cleans itself after emptying, which eliminates the penetration of unpleasant odors into the living room

2 Grundfos Sololift 2 C-3

High throughput
Country: Denmark
Average price: 21 963 rub.
Rating (2017): 4.0

In second place in the ranking of the best sewer installations is the Grundfos Sololift 2 C-3 model. Despite the high price, many buyers liked it for its reliability and performance. With a power of 640 W, it provides a throughput of 14.4 cubic meters. m / hour and creates a pressure of 8.5 meters. Sewer installation combines up to 7 water intake points, which allows you to connect several sources of polluted water.

Among the strengths of this installation, customers distinguish good equipment, high speed and quality of components. The device has a small size and weight of 6.6 kg, which allows you to install it almost everywhere. The disadvantages of this model are the need for regular cleaning of the float for the correct operation of the pump and quite noisy work.

1 SFA SANIVITE Silence

Best price
Country: France
Average price: 22 300 rub.
Rating (2017): 4.5

The first place in the ranking of the best sewer installations is held by SFA SANIVITE Silence. With the dimensions of the drain tank and power of 400 watts, the device provides a capacity of 6 cubic meters. m / h, which is enough to service a small house. The model works with dirty water and unpretentious to the type of runoff. The maximum temperature with which the installation works is 60 degrees.

The advantages of the device buyers include quiet operation, high reliability and small size. In addition, a non-return valve prevents odors from entering the room. In the event of overheating or lack of wastewater inside the unit, the unit will shut itself down. Among the minuses, only an overvalued price is noted.

For the correct choice of the pump, which will create a forced circulation of the coolant in the heating system, it is necessary to understand its technical parameters well. Understand what information carries even better. marking of circulation pumps, because a set of numbers and letters incomprehensible to an ordinary person allows a specialist to quickly determine the desired model.

Circulating devices for the heating system

Key parameters for heating pumps

There are not so many parameters that you should pay attention to when choosing a device. In fact, there are only two of them - pressure and productivity (consumption).

The head is called the hydraulic resistance of the system, which the pump is able to overcome. This value is measured in meters of water. As a rule, the hydraulic resistance of the entire system is set by the highest point of the pipeline through which water circulates.

Pump performance, measured in m³ / h, shows how much fluid it can drive through the pipeline per unit of time. Therefore, before choosing the necessary model, you need to know the exact amount of coolant in the system.

Important! Head and performance are inversely proportional to each other. That is, the maximum pressure is achieved at zero flow. And, on the contrary, the maximum flow rate is possible at zero pipeline height.

It is the pressure-flow characteristic of the device that allows you to determine a model with optimal parameters for a particular system. Moreover, the standard formula - the more powerful the better - is not quite suitable for this case. Because this means buying a more expensive unit and increasing energy consumption.

How are circulation pumps labeled

Usually in the marking of circulation pumps for heating systems manufacturers introduce the main characteristics and data to judge the use of devices. Consider the Grundfos pump example of how these devices are labeled.

Grundfos circulation pump marking

Type of control

The first letters correspond to the type of device. In our case, “UP” indicates the circulation type of the device. Next is the designation of the control method. There are several options:

constant engine speed;
step changeover of frequency of rotation (S);
infinitely variable speed with frequency inverter (E).

Interesting to know. If there is a built-in frequency converter, you can set any frequency of rotation of the electric motor and thereby choose the optimal pump performance for a particular system.

Diameter of nozzles and pressure

After the letters in the marking are numbers, the first of which indicates the internal diameter of the nozzles in millimeters, and the second shows the maximum pressure in decimeters.

Before mounting the device in the pipeline, the diameter of the inlet and outlet nozzles must be taken into account. Of course, using special adapters, you can install the device on a pipe of a different size, but in this case it will not be able to give out the characteristics that were laid down by the manufacturer, which will significantly reduce the efficiency of the device.

Installation length

The next (third) number indicates the installation length in millimeters. Like the diameter of the nozzles, this indicator is important for the installation of the device in the pipeline system. It is especially important in the case of a pump insert, where every millimeter plays a decisive role.

Knowing the installation length greatly simplifies the process of tapping the device

Different manufacturers may provide additional information in labeling of circulation pumps for heatingwhich they consider important when choosing the right model. For example, the type of execution of the housing, the method of pipe connection, the class of electricity consumption, etc.

Brand Importance

Modern manufacturers of devices for circulating the coolant in the heating system offer almost identical characteristics of their products. The main differences relate to reliability and uptime. That is why many experts advise a little overpay and give preference to a well-known brand.

For your information. To date, the most reliable companies are the aforementioned Grundfos, Willo, Speroni, Wester and Elso-Therm.

In addition, there are a large number of Chinese options (fakes), the quality of which, to put it mildly, leaves much to be desired. Of course, in this case, you can save a lot, but the correspondence of the marking real characteristicscirculation pump hardly even the seller of the goods can guarantee.

The low price should not attract, but scare away the buyer, otherwise very soon you will have to remember your repair skills

To avoid problems with poor-quality operation of the pump, which is caused by cheap equipment, errors in calculations or improper installation, it is better to entrust the organization of the heating system at home to specialists.

Video: how to choose a pump for a heating system

Allows rational use of energy and easy control of room temperature

Heating: gravity or forced circulation

The main trump card of gravity heating is uninterrupted operation when the power is cut off (if a non-volatile boiler is used). Water in the heating circuit moves due to gravity. In practice, fewer users are now striving for this: constant readiness for life without electricity imposes many restrictions, and non-volatile engineering systems do not completely solve problems. You still have to keep kerosene and candles ready, carry water in a bucket and charge the phone with a cigarette lighter when there is no light in the house. Most people prefer to buy an electric generator so that they no longer have to worry about blackouts.

For gravity water heating, you will need to wiring expensive large-diameter pipes - as a rule, they have to lay out at least 10-20 thousand rubles in addition to the price of a regular set of pipes. The circulation pump is 2-3 times cheaper. With equivalent investments, forced circulation heating is much more convenient: the wiring does not spoil the design of the rooms, the heating and cooling of the system occurs quickly, and the temperature can be controlled by thermostats in the rooms.

Pump selection

Until recently, heating systems used mainly three-speed circulation pumps. Their disadvantage is operation with a fixed speed, regardless of the flow rate of the coolant. The master adjusts the pump when the system starts, choosing such a frequency to ensure a comfortable temperature for the entire heating period, and uses the conditional "coldest five-day period of the year" (-28 ° C for central Russia) as a guideline. Thus, the pump constantly works at maximum - even when there is a thaw outside the window and you reduce the coolant flow by turning the thermostat. This leads to an excessive consumption of electricity and a decrease in the resource of the pump itself, and thermostats start to whistle when it pumps up pressure idle.

In company Grundfos solved the problem by creating a series of smart pumps Alpha2 L . A conventional pump is 3 speeds of rotation, that is, 3 stages of adjustment. And at Alpha2 L their number is 7. Smoother adjustment - finer adjustment of the pump to the needs of the system. But this is not the main difference. The main thing is the operating modes Alpha2 L differ in quality.

Constant speed - 3 modes

Pumps Series Alpha2 LAs usual, you can adjust to a constant speed. If you need a high flow rate, you can choose one of these three "traditional" modes that differ only in the number of revolutions.

Constant pressure - 2 modes

In these modes, the pump will respond to lower flow rates. It gets hot for you, you spin the thermostat - and the pump automatically slows down so as not to pump up pressure in vain. Constant pressure Alpha2 L It consumes an average of 2.5 less electricity per year than its predecessors. In absolute terms, this is a saving of about 800 rubles (at a cost of 3.58 rubles per kilowatt). Its price difference (compared to a conventional pump) Alpha2 L returns to the consumer within 2.5 years, and the manufacturer’s warranty for it is 5 years (from competitors 1.5-2.5 years).

Proportional pressure - 2 modes

These modes are the most economical. A well-insulated house may not require maintaining constant pressure in the heating system: while reducing the flow of coolant, the pressure also slightly decreases without compromising the comfort of the residents. Energy savings are even greater than in the previous mode.

Self adjustment

Typically, the master regulates the pump when the system starts, not all users decide to "twist something" in heating equipment on their own. But in the case of Alpha2 L a graphical indicator displays the current operating mode, and a sequential transition from "shock" operating modes to more economical is performed with a single button. Even a novice user can handle this adjustment. This is especially useful in the case of an abnormal winter: too soft, or, conversely, harsh, when you want to more accurately adjust the system in accordance with weather conditions.

Interesting Facts

Engine. For the production of pumps Alpha2 L a new plant was built in Denmark. The developers initially set themselves the task of increasing the resource and reliability of the engine, taking into account the requirements of the energy industry of the future, and not today. For the manufacture of a permanent magnet synchronous motor (and with a ceramic shaft), the existing production sites did not fit, it turned out to be easier to establish the most modern production from scratch. The permanent magnet motor consumes less electricity, allows you to adjust the coolant flow, and the ceramic shaft has the highest abrasion resistance.

Electrical connection. Innovation - a special plug. A conventional pump connects to the mains rather intricately. To connect Alpha2 L, you only need to insert the plug. Easier connection - less human factor during installation.

Graphical indicator. Normally, the pump runs completely silently. If the model is not equipped with indicators (and it often happens), then it is difficult to understand in what mode it works (and whether it works at all). A pleasant trifle is an indicator of network connection and operating mode. It will allow the user to obtain information about the operation of the pump, and in case of a malfunction, consult a service center by phone.

No need to remove air before starting. A smart pump gets rid of it on its own.

High starting torque. To start after a long downtime (for example, in the summer), as a rule, you have to manually rotate the motor shaft of a conventional pump using a screwdriver. At engines Alpha2 L high starting moment, they have enough strength to start on their own even after downtime.

Circulation pumps allow to get rid of the problems arising in systems with natural coolant circulation. In thermal systems with a circulation pump, good circulation of the coolant in heating devices is ensured, the boiler can be located in an arbitrary place, as well as the use of pipes of a smaller diameter than in systems with natural circulation.

The choice of a circulation pump is a task to be solved when designing a system with forced circulation. What are the parameters for choosing a circulation pump for the heating system? Which brand pump to choose . We will try to answer these questions in today's article.

First of all, the circulation pump must be designed for heating systems, that is, it must withstand high (up to 110 degrees C) temperatures, and work on water or other coolants used in heating systems.

In order to correctly select the technical parameters of the pump use it characterization - A special graph reflecting the change in pressure and flow. This chart is plotted hydraulic characteristic of the systemdetermined by its hydraulic resistance. The intersection of these graphs will determine the operating point, which will indicate what flow rate and pressure the pump will provide in this system.

However, manufacturers do not always publish the characteristics of the pumps in the form of graphs, but give only the nominal and maximum operating parameters. In addition, it may be difficult to determine the hydraulic characteristics of the system. For these reasons pump selection is often carried out according to the value of the nominal flow rate and maximum pressure.

How to determine the required flow of the circulation pump in the heating system

Delivery (productivity) of the pump - the amount of fluid transferred through its outlet pipe per unit of time. You can estimate the required pump flow using the dependence:

If you want to roughly determine the required pump flow, then you can use the rule: in one hour, the pump must pump a volume equal to three volumes of the entire heating system. You should choose a pump that provides a margin of 10-20% in performance.

How to determine the required pressure of the circulation pump

Pressure centrifugal pumps most often expressed in meters. The pressure value allows you to determine what hydraulic resistance it can overcome. In a closed heating system, the pressure does not depend on its height, but is determined by hydraulic resistance. To determine the required pressure, it is necessary to perform a hydraulic calculation of the system. In private homes when using standard pipelines, as a rule, a pump developing a pressure of up to 6 meters is usually enough.

Do not be afraid that the selected pump is able to develop a larger head than you need, because the developed head is determined by the resistance of the system, and not by the number indicated in the passport. If the maximum pressure of the pump is not enough to pump fluid through the entire system, there will be no fluid circulation, so you should choose a pump with a pressure head.

What do the numbers in the designation of the circulation pump mean

Usually, the name of the circulation pump is followed by numbers, for example Compass 25-60. The first digit indicates the rounded diameter of the nozzles, and the second - the pressure in decimeters.

Pump brand

If you have decided on the characteristics, then you only need to choose the brand of circulation pump. We offer some of the most famous brands.

Gileks Compasses

Company JILEX - a well-known manufacturer of centrifugal, vortex, submersible pumps and pumping equipment. The company’s production is located in Russia in Klimovsk, Moscow Region. The advantage of Jilex pumps is good quality and reasonable prices.

The figures below show tables with the most important characteristics of the compass pumps. On pumps of this brand a switch is installed, which allows to obtain various characteristics.

Pumps Dzhileks Circular 25-40, 25-60, 25-80

Pump with union nuts 1 in. Pump head 4m, 6m and 8m respectively.

Grundfos circulation pulsers (Grundfos)

Grundfos is a Danish pump company known throughout the world. Grundfos pumps are somewhat more expensive than some analogues, however, buying a Grundfos pump you can have no doubt about the quality and reliability of the unit.

Grundfos UPS 25-40, 25-60, 25-80

Grundfos pumps are small-sized, low-noise and economical.

What are circulation pumps for?

Circulation pumps are installed in heating systems with forced circulation of the coolant. Actually, the pumps provide this circulation. In systems with forced circulation, pipes of smaller diameter can be used than in systems with natural circulation, which save money on when installing the heating system. In addition, with forced circulation of the coolant in the system, it is possible to install devices for controlling the temperature in the room.

How to buy a circulation pump for heating

For, to purchase the pump you are interested in, click on its image, you will be redirected to the Cotmarket online store, where you will need to register and make a purchase. Payment can be made by credit card or e-wallet, you can also pay for goods upon receipt or arrange a loan. Delivery is carried out at points of delivery located in many cities of Russia, in addition, delivery is carried out by mail or courier.

If we talk about modern heating systems for cottages or small houses, first of all, probably, it is necessary to note a heating boiler, which takes on the functions of heating the coolant, water to a certain temperature, produces heat for heating, etc. But, obviously, this is completely insufficient to feel comfort in the house, because it is necessary to somehow distribute this heated coolant through pipes, heat exchangers, radiators so as to achieve a constant required temperature. Here the so-called “heart” of the heating system comes to the rescue - low power heating pumps.

The principle of operation of such pumps is approximately the following: by means of a pump hot water from the boiler moves through the steps of the pipelines in the house (one or more), through radiators, heat convectors or other heating appliances, then it returns through the pipeline to the boiler. When the water temperature drops to a predetermined certain level, the heating boiler is re-activated, and the process is completely repeated.

In fact, water in such a closed system moves in a circle, while the pump only overcomes friction. This explains the low power of the circulation pumps used in domestic heating systems. The power consumption of these pumps is very low, approximately, like a conventional bulb, 100 watts.

Modern circulation pumps of well-known companies such as German Grundfos or Wilo, which are often used in domestic heating systems, are equipped with three power levels. Manual three-stage speed switches allow you to control the system even without the use of additional automation. If the house has become hot, and the pump continues to operate at full strength, it is enough to reduce the pump power, as the flow of coolant in the system will also decrease, and the temperature will decrease on heating devices.

It is also possible to connect the pump to the power line through a thermostat (temperature sensor). Then the pump will depend on the temperature in the rooms, it will turn on automatically only when the temperature in the house drops below the desired one. Despite his low power, pumps of this category can provide heat to rooms having an area of \u200b\u200b200 to 750 square meters. m

Grundfos today also offers circulation pumps with integrated electronic control (Grundfos Alpha or Grundfos UPE). They are able, depending on the needs of the system, to change the frequency of rotation of the electric motor. Pumps of this generation save about 60% of electricity and reduce hydraulic noise in pipelines.