Grundfos circulation pump with dry rotor. Grundfos circulation pumps. Centrifugal Console Pumps Grundfos NB, NBE and NK

Despite the widespread, which received heating systems with natural circulation Heat carrier, they are inherent in a number of serious minuses. To their number, there should be a low speed of fluid movement, which negatively affects the final temperature in the opposite circuit. It is also necessary to mention that the same amount of hot water arrives at all radiators. Similar flaws do not allow the house sufficient number Heat.

However, today you can solve this problem if the heating system will function in combination with circulating pump. There is a problem: which one to choose? If you turn to specialists, then, in their opinion, the most optimal option Among all the options offered - Grundfos UPS pump.

history of the company

The reference point for Grundfos should be considered 1945. It was then that, on the initiative of the Danish engineer, Paul Du Jensen, a small production was founded, which was called "Bjerringbro Pressstoberi Og Maskinfabrik". If you try to translate it, then in Russian it will sound like a press casting factory and machine processing in the Bierringbro.

At the first time of the company, the engineer threw all the forces on the creation and production of only one products - pumping equipment. Due to the high quality that products had, as well as a non-standard look at solving Most Tasksrelating structural features and dimensions, the company did not need a lot of time so that the manufactured installations acquired high popularity. As production facilities increase, more and more consumers have stopped the product under this brand.

Until 1967, the company changed its name several times. And only this year, the name Grundfos was entrenched for her, which today recognize the manufacturer of high-quality pumps.

If you contact these statistics, the share of pumping equipment produced under the Grundfos brand accounts for about 50% of world consumption. The reasons for this situation are associated not only with high quality. It also contributed to this that the company today represents an international concern. In many countries, plants, factories and small assembly workshops, created on the initiative of the Grundfos manual, are functioning. They are available in our country. So, in the Russian capital in 1992, a company representation appeared, In the future, the status of a subsidiary, the first decision of which was the launch of the plant under the city of Istra.

Varieties of devices

If we consider the range of the company, then the following types of Grundfos pumps can be distinguished in it:

With a dry rotor.
With a wet rotor.

With dry rotor

One of the features of this type of pumping equipment is a high coefficient useful action. In addition to this, it has a high power. Similar models of Grundfos pumps are designed to work with large fluid. For this reason, they are distributed to manufacturing enterprises or used in heating systemsah large buildings. But for residential properties of private type, they are extremely rare.

If we consider the design of this device, then the contact of the rotor with the liquid is excluded, which causes the name of these pumps. The separator between this part and the camera in which the liquid circulates is the cuff.

When the circulating pumps of Grundfos dry type should be taken into account that they create a large number of noise. This is due to the presence in their design of a special fan, which in the process of rotation provides cooling the body of the apparatus.

With wet rotor

If we consider the heating systems for private-type residential facilities, the best choice for them will be Grundfos UPS pump. We will try to decipher the abbreviation of this device: UP indicates that this model represents the class of circulation pumps, S gives a prompt that the device uses a three-speed switching system. In other words, during the operation of the Grundfos circulation pump, the owner can choose any of three speeds whose switching can be carried out mechanical path either automatically.

Against the background of the devices of the previous type of installation equipped with a wet rotor, different with high efficiencywhose value reaches 50%. Pluses should be called no noise during operation. True, for efficient use of high quality coolant. When performing this requirement, you can count on the fact that the Grundfos pump will be able to effectively cope with its task for at least 10 years.

According to experts, the best choice for the heating system of the private house will be a Grundfos pump with automation. This will give the owner to choose the desired mode of operation for several days. In addition, when using such a pump, electricity costs will be small. An important point It is the lack of the need to carry out measures for servicing such equipment. It is enough just to set the necessary settings for the device, after which it is not necessary to change anything in the equipment.

You can get an idea of \u200b\u200bthe technical characteristics of the device on the example of one of the manufacturer models, which can perform grundfos UPS 25-40T. This apparatus is quite high demand among country house owners.

If you analyze the numbers present in the marking, it can be understood that the model is equipped with pipes with a diameter of 25 mm, possessing a pressure of 4 m. This product is able to ensure efficient operation of heating systems one-storey house.

In the event that the heating is represented as a single-tube system, then the similar circulation pump Grundfos will be able to successfully perform its functions in a two-storey house.

Parameters

In addition to the main, attention deserves attention additional specifications This device:

if the owner decided to change the speed of the Grundfos pump, the power will vary between the following values: 25-35-45 W;
the bandwidth is 3.5 m 3 / h;
the distance between the ends of the nozzles is 18 cm;
mass - 2.6 kg;
it works from a voltage of 220-230 volts.

Constructive features

For the manufacture of some parts of Grundfos pumps can be used different materials: Cast iron is used for the pump housing, for the motor - aluminum. The material for the impeller and bearings is ceramics, and for the rotor full-scale design - steel.

When choosing each of the materials named materials, their characteristics were taken into account. Thanks to them, the named elements demonstrate high strength and perfectly copble with the coolant heated to high temperature. First of all, the bearings should be highlighted. Even if the pump is used in particularly hard conditions, ceramics bearings are capable of working without single repair up to 10 years. In addition, the use of ceramics and provides an advantage consisting in reducing noise during rotation of the rotor.

If we evaluate the range of the manufacturer, then the models of GRUNDFOS circulation pumps are presented, equipped with an impeller from the technopolymer and a ceramic rotor. Due to the use of such innovations, it is possible to significantly improve the efficiency of the CPD Installations and extend its operational resource. These features must be remembered by those who are important to establish a high-quality device in the heating system.

What to pay attention to when installing?

A difficult moment on the installation stage is the correct choice of direction of pipes. However, it will not arise with these problems due to the fact that the manufacturer has taken the necessary measures that will simplify the solution of this task. If you look at the pump housing, you can see the arrow corresponding to the rotation of the rotor. It can be understood in which way the heat carrier is moving.

Keep in mind that the circulation pump is sold without fastening elements. Therefore, you will have to buy them separately. Having finished the installation of the circulation instrument, you should withstand a pause of a duration of the day, and then you can run the pump. So it is necessary to come for the reason that the operation of circulating pumping equipment should pass exclusively at positive temperatures indoors. If, before purchasing the pump, it was or transported in the cold, then without natural warming up composite elements When starting, the risk of its breakdown occurs.

To connect the device to the network alternating current It is advisable to use a separate cable allotted from the distribution panel. In case of use models Grundfos. UPS 25-40 can be stopped in a three-core copper cable cross section of one vein 0.75 mm 2.

Overview of other models

Also on the market are presented other models under the Grundfos brand:

Magna.
Alpha.

The model of this pumping equipment is presented in three classes: large, medium and small pumps. If a we are talking About the system of heating a private house, then choose a device that represents the last two groups.

The model is characterized in that it is capable of equally efficiently maintaining the operation of the heating system, hot water supply, as well as air conditioning. The design provides a control unit, the function of which is to control the temperature and pressure generated in the heating system. The main purpose of pumps low power is to use to ensure efficient work Warm floors.

When developing this model, the latest achievements of the company were used, thanks to which the need to use the manual and automatic configuration method disappeared. In other words, the company managed to create a "smart pump". After installation, this equipment independently determines the preferred mode of operation. The owner can not be doubted that the device will choose the most suitable option. When using such an aggregate, it is possible not only to ensure the effective distribution of heat in the premises, but also reduce the cost of fuel and electricity.

During the operation, the device monitors the changes in heating, adapting to them and its operation mode. The owner has the ability to independently choose the values \u200b\u200bfor defined parameters modes. For example, it can be envisaged that the pump reduce the fuel consumption at night, as well as in those hours when there are no people in the house. In addition to this, the power supply system is equipped with a special unit whose function is to convert the current frequency.

Conclusion

Modern models of Grundfos meet all the requirements of the current time. Therefore, giving them preference, the owner can be sure that there will be no problems not only in the operation of these plants, but also during their independent installation. Models possess special signsthat simplify the process of installing the pump on their own. However, in the absence of even the slightest experience in this case, it is not recommended to start such work. The probability of error is very high here, and the consequences even from the slightest miscalculations may be expressed in the form of serious accidents.

The system of heating with the natural circulation of the coolant is a classic that has several flaws. Firstly, low speed The movement of the coolant, which reduces its temperature in the opposite circuit. Secondly, the uneven distribution of hot water through radiators. All this reduces the efficiency of heating as a whole.

This problem has one solution - to establish a circulation pump. But what? Almost all experts converge in one opinion: better than the Grundfos UPS pump to date not to find.

history of the company

The history of Grundfos begins with 1945. Danish engineer Paul Du Jensen organized small production Under the title "Bjerringbro PressStoberi Og Maskinfabrik", which meant: Factory of press casting and machine processing in Byrryngbro.

Initially, the engineer was engaged in developing and manufacturing only pumping equipment. The quality and non-standard approach to solving many tasks associated with the design and sizes of devices made the company's products very popular. Production grew, consumers became more and more.

Until 1967, Dane has repeatedly renamed his company. And only this year the name Grundfos appeared, which still exists.

According to world statistics, the pumps from this company occupy 50% of world consumption. Why? The quality was already said. But there is another reason - the company has become an international concern. Plants, factories, small assembly shops are crushed around the world. Russia did not exception. In Moscow, a representative office was organized in 1992, which turned into a subsidiary with the opening of the plant under the city of Istra.

Varieties of devices

Currently, the company offers two types:

With a dry rotor.
With a wet rotor.

With dry rotor

It must be immediately noted that this type of pumping equipment is characterized by a high efficiency. Plus he has a big power. For such species, a large amount of heat carrier needs, so the devices of this type are used or in manufacturing enterprises, or in the system of heating of large buildings. In private house-building, it is rarely applied (a huge house in the form of a palace with a separate boiler room).

A constructive feature is a rotor that does not come into contact with water, hence the name. It is separated from the camera where the coolant is moving, cuff.

The dry-type hydropos circulation pump is very noisy, it is equipped with a special fan that supports the necessary temperature of the unit of the aggregate.

With wet rotor

For heating systems in private homes, the optimal version - Grundfos UPS pump. Let's start with the abbreviation: Up refers to the category of circulation pumps, S is a three-speed switching system. That is, this circulation pump can operate in three speeds mode, which switches or manually, or automatically.

Compared with the previous view, the pump with a wet rotor has a low efficiency - 50%. But he works silently. The only condition of high-quality operation is high quality coolant. If this condition is observed, the device will work up to 10 years guaranteed.

Experts recommend installing the GRANDFOS Circulation pump in the home heating system with automation. First, you can set the mode of operation for several days. Secondly, such an aggregate consumes less electricity. Third, the complete absence of the service process. I specified the settings and more to fit the equipment.

Overview of technical characteristics

To disassemble the technical characteristics of the device, it is necessary to consider one of its models, for example, Grundfos UPS 25-40. This is one of the most popular products that is used for the heating systems of country houses.

The marking figures indicate that this device has a pipe with a diameter of 25 mm, and the pressure is 40 dm or 4 m. For a single-storey building (cottage, cottage) - the optimal option.

If a single-tube system is used, then such a circulation pump will pull the two-storey house.

Parameters

Now additional technical characteristics:

when switching speeds, the output pump power will be like this: 25-35-45 W;
the volume of the pumped coolant is 3.5 m³ / h;
the length of the device between the ends of the nozzles is 18 cm;
product weight - 2.6 kg;
nutrition from a voltage of 220-230 volts.

The pump housing is made of cast iron, motor - from aluminum. Ceramic impeller and bearings, rotor full steel. All these materials are specifically selected in this way. They have increased strength indicators and are well opposed to the heat carrier with high temperatures. This is especially true of bearings. In harsh operating conditions, ceramic bearings are withstanding 10 years, plus it is ceramics that reduces the noise in the rotor rotation process.

Currently, the manufacturer offers circulating pumps with an impeller from a technopolymer and a rotor of ceramics. This innovation increases the efficiency of the device and the service life. This must be taken into account when buying, if you want to have a high-quality unit in the heating system.

What to pay attention to?

The manufacturer has already taken care to in the process self-mount house master did not confuse the direction of installation of nozzles. On the pump housing, an arrow is applied, showing rotation of the rotor, and accordingly the movement of the coolant.

Please note that the configuration does not include fasteners. So they will have to take care of their purchase. It is recommended after installing the circulating device to wait a day, after which it is started. This is due to the fact that the circulation pump itself should work only at positive temperatures indoors. And if the product was stored or transported in the cold, then its rapid installation and start can lead to a breakdown.

Connecting to an AC network is better to be carried out as a separate cable from the distribution panel. For the GRUNDFOS UPS 25-40 model, three-core is suitable copper cable cross section of one vein 0.75 mm².

Overview of other models

Concern Grundfos offers two more models:

Magna.
Alpha.

Magna.

The model feature is that it can also be used for heating, and for hot water supply, and for air conditioning systems. The device is provided by the control unit that monitors temperature regime And for pressure inside the heating system. Low power pumps can be installed on the warm floors.

Alpha.

This is an innovative solution that allows you to move away from solving problems associated not only with manual setting, but also automatic. If so you can put it, it is a "smart pump". The pump installed in the heating system itself decides, based on what mode it will work. And be sure that it will choose the optimal option. And this is a uniform distribution of heat in all premises, plus good fuel and electricity savings.

If for some reason changes occur in heating, the device itself is adjusted for them. In this case, you can set the pump specific modes settings. For example, reduce fuel consumption at night or at intervals when there is no one in the house. Plus, the unit is installed in the power supply system that is responsible for converting the current frequency.

Installation features

The grindback circulation pump is mounted only on the horizontal pipeline. This is how its effective and correct work is ensured. The aggregates with a wet rotor must be installed on the feed circuit, and with dry - only on the opposite. The fact is that in the pump with a dry rotor there are rubber and paronit seals, cuffs and gaskets. Under the action of high temperatures, they quickly fail.

Be sure to be filter installed before the unit rough Cleaning. This small and inexpensive device will extend the service life of the pump itself. Units with any kind of rotor can be installed in open or closed systems Heating.

If there are problems with the supply of electricity in the country village, then the circulation pump is best installed on the bypass. Through the instruments of the Grundfos, the coolant is with difficulty, too small gap between the impeller and the pump housing.

And last. Choosing a pump for your own home, you must first pay attention to its characteristics. Special attention to the pressure on which it depends will raise the heat carrier on necessary floor or not. If the heating scheme in the house is one-tube, then this indicator will be less if two-pipe, you will have to purchase a device with a large indicator.

Winter every year becomes warmer and less predictable. The absolute record was recorded in the 2017-2018 season. Specialists - meteorologists from the FSBI "Institute of Global Climate and Ecology" fixed abnormally warm values \u200b\u200bof temperature for winter and spring for a variety of regions of Russia. "Well, at least to save gas," they will say one. Others vulnerable. - Predicting the weather is an ungrateful thing, and for real savings you need other measures. - And they will be right.

Strictly speaking, modern technologies It has long been allowed to effectively insulate any dwelling. In addition to comfort it is significant savings Heat and energy resources. But besides the external and internal thermal insulation of your home, you should not forget about the heating system. Even if it is properly designed and does not cause complaints, it can always be made more economical.

Here it is necessary to make a reservation. Houses are different types and sizes, and they can be heated differently. In small areas of buildings, a system with natural circulation of the coolant is most often used. Pure physics and nothing more. Heated B. gas boiler Water rises upstairs, and already spent and cooled, descends under the action of gravity. But such a system is unlikely to be effective for medium and large buildings. The circulation of water in the system is slowly, and therefore problems with heating radiators are possible, and even at all, there is a risk of pipe freezing in unheated places.

Alternative to natural, in this case, the forced circulation of water becomes. In this case, pumps are used, which are mounted in heating systems. Namely, in the inverse tube (the so-called "return") which comes from radiators to your boiler. Forced circulation ensures constant and uniform impact of heat in all rooms at home.

In order not to make a mistake when choosing a pump for your heating system, you need to know many parameters. But the main one of them are: how much thermal energy is needed, and what are the indicators of hydraulic resistance? For ordinary person All this is difficult. And in order not to make a mistake, it is better to trust the professionals that will select optimal model equipment.

In Russia, pretty big choice pumps, both with "wet" and "dry" rotor. However, not all of them apply to engineering systems private houses. Pumps with a "dry" rotor have a large efficiency (up to 80%), but are very noisy. As for the aggregates with a "wet" rotor, then they are the opposite: very compact, mounted in any heating systems, almost silent, and therefore are so loved by the owners of private houses. "Wet" pumps are called due to the fact that the rotor is in water and cool it there. The liquid plays the role of lubrication for the mechanism. The device is mounted in the horizontal position of the shaft so that water is constantly in the housing.

Grundfos pumps

Being an unconditional technological leader in the pumping equipment market, Grundfos (Russia) is pleased to offer its customers a large selection of models. The assortment has both adjustable and unregulated pumps. This, for example, a compact UPS with a "wet" rotor and asynchronous engineWith three velocity control modes. Switching occurs manually using a special lever on the housing. In case, due to the long idle, the zakus rotor, the pump shaft can be scrolled manually.

As for regulated pumps, here Grundfos offers a whole family of Alpha series devices. Each of them, with proper operation, will serve long years And it does not deliver unnecessary trouble. These models according to the degree of increasing functionality can be positioned as follows: and alpha3.

This series of pumps are wider than the UPS. They implemented the possibility of automatic adjustment of the rotational speed of the shaft, which allows the use of heating systems with a high degree of automation as part of heating systems. Like all GRUNDFOS circulation pumps, Alpha1 L differs in very high energy efficiency, the EEI coefficient is less than 0.23. This means a very high efficiency. "L" in the index means limited functionality. Take a look at the list of pump features - it is more than impressive, only 6 modes are provided. But Grundfos is not known for a "limited functionality", because there are models in the assortment with even more diverse capabilities.

Alpha2 and Alpha3.

Now these pumps are fully identical in their functionality. It happened after the possibility of independent hydraulic balancing of the heating system, which was previously present only at Alpha3. This is very convenient solutionwho has deserved an informal nickname "Medicine from the cold".

For hydraulic balancing, you will need Alpha Reader, which is installed on the electronic unit. It is purchased separately, it is not included. APLHA Reader transmits information from the pump to the smartphone or iPad. You will also need a free Grundfos Go Balance application to be installed on the gadget. Further procedure is carried out under the guidance of an application that will give out detailed instructions for each stage of the hydraulic balancing of the entire system. Alpha2 and Alpha3 pumps allow to measure the coolant consumption in any heating system ("Warm floor", two or one-tube system, deadlock, radiator network without thermal heads or with permanent flow) On all radiators and circuits of "warm floors" in real time. This allows you to reduce possible errors, without which it is not necessary even with the most thorough theoretical calculations.

However, Alpha2 and Alpha3 are interesting not only for self-balancing. These are modern multifunctional units, perfectly cope with work in different conditions. They have three fixed speed modes, three modes with a permanent pressure drop and three modes of proportional control - such a rich selection opens the possibilities of accurate system settings, the pump becomes universal. There are two more important additional functions: "Night economy regime" and "Summer Mode". In Denmark, where these pumps were developed, they are in great demand. First, the heating of the premises, in which there are no people at night, is simply irrational. Secondly, this is a question of compatibility. Pumps are suitable for working with modern boilers, where such a mode is present. Pragmatic Danes know a sense in savings, they are generally expensive with their heating. Therefore, in vain burn gas, firewood or coal is a non-disabilities.

As for the "summer regime" - this is a seasonal function. It allows you to start the heating in the fall without unnecessary problems. For example, the pumping of the pump shaft with a duty is simple. In fact, launch yourself the system several times during the summer - a real fruit. " Summer mode»Will support system performance independently.

Grundfos Alpha2, became the first pump in which the AUTOADAPT mode appeared - naturally, Alpha3 also "inherited" him. This is a novelty from the company's engineers who pay great attention, primarily ease of use, and of course energy efficiency. The function has become a real breakthrough and a kind of standard for subsequent generations of circulation pumps. The AUTOADAPT mode makes it possible to automatically change the settings of the equipment when the needs of people living in the house are changed, or, for example. Change of season time. Using complex software algorithms, equipment electronics all the time analyzes the processes and depending on the indicators, selects optimal pressure. This is significantly saved by the resources of the heating system and the consumer money.

By purchasing Grundfos pumps, the consumer receives a very high-quality device performed by the highest European quality standards. That is why the manufacturer gives a guarantee from 2 to 5 years on various models equipment.

Separately should be said about engines. Do you know many pump manufacturers in which the rotor shaft and the bearing are made of ceramics? Most likely no, because in most models from Grundfos competitors, the shaft is made of steel, and the bearing of graphite. It is well known that hot water Heats iron and expands it. Over time, such a bearing is pulled out in the formed clearance between the shaft and the bearing, the scale falls and another garbage. Sooner or later it leads to breakage. In the case of ceramics, it is almost impossible.

In addition, in the pumps of the Alpha series, a four-pole synchronous electric motor with permanent magnets and frequency converter. Rotors with permanent magnets give a larger efficiency in a different load range. Grundfos appreciates its customers and is ready to provide any help at any time. The program "Service for 24 hours" is represented in all cities of Russia, where there are representative offices of the company. Grundfos pumping equipment user can always call hot line"And get an answer to any question or call specialists to eliminate

Circulating pumps For Grundfos heating systems, is a good choice For those people who value reliability and practicality in all areas of life. When organizing heating systems, heating floors and hot water supply, the problem of constant circulation of water appears. Usually, for such purposes, pumping equipment is taken (circulating pumps).

Grundfos is a popular Danish company that is engaged in the manufacture of pumps. The most noticeable difference from other companies is the fact that there are a series in the Grundfos directories that are designed specifically for use in a specific area. Each pump from this series has a detailed description and specifications.

The pumps of this type are characterized by very compact sizes and low weight. This greatly simplifies the installation and makes it less noticeable. All equipment of this type does not create inconvenience, as it works almost silently.

Circulating pumps for Grundfos heating are very economical and in its performance consume a small amount of electricity. Please note that some types of such equipment do not require special mounting. If there are difficulties in independent installation, You can watch a video lesson on the Internet.

Circulation pumps for GRUNDFOS heating systems are arranged in such a way as not to deliver any inconvenience to an ordinary user. Circulation pump for heating GRANDFOS almost immediately can be connected to the network and operate.

Grundfos equipment operation parameters are automatically set, which simplifies the task of their setup and continuous control. The main task of any circulation pump is its impact on the coolant (heat supply system).

In this process, natural resistance in pipes is suppressed, by dropping pressure. To choose the right pumpIt is necessary to take into account the main factor - the temperature of the coolant, as well as the characteristics of the substance that will be used.

Tip! Before buying, you will definitely consult with a specialist, since the wrong choice of model can incur financial losses on your part.

Read here.

One more important characteristicwhich must be taken into account - the diameter of the pipeline. Possible hydraulic losses should be calculated.

The most basic rule that should be guided by choosing a pump is that the volume of the coolant system should take at least three times in an hour. Before buying a circulation pump, it is required to carry out calculations, therefore it is best to choose and install it with a master.

Varieties of pumps

As for the species of this type of pumps, then you can select the two most popular:

Grundfos circulation pump for heating with dry rotor. Photo it is slightly lower. Its feature is that the motor practically does not touch the fluid, which pumped. Often, such pumps are used in the overall systems where there is a need for pumping large number coolant;
Pump with wet rotor. In such equipment, the rotor is directly in the liquid. The main advantage of this design is that air itself is deleted when the pump is started.

Advantages of pumps Grundfos.

Grundfos heating circulation pump has the following advantages:

Low power, but high performance. The height of the building never reduces the performance of the device, since the water that is supplied to the pump in the pipeline always pushes the coolant in the opposite direction;
Minimum energy loss, occur only by friction in the pipeline;
Significant electricity savings. It is explained by the fact that the pump supports the desired temperature offline;
Everything modern systems This type is equipped with special temperature regulators. On this sensor, you can set the desired temperature and then the system will be supported itself. The pump can quickly rebuild into the right mode and maintains the already specified temperature;
Circulation pumps for GRUNDFOS heating systems are distinguished by simple design. If desired, it is possible to establish such an aggregate with your own hands without attracting knowledgeable specialists;
The buyer may pick up a suitable pump under a certain system. It should be noted the fact that the price will depend on the configuration of the device. All this allows you to essentially save the buyer own cash;
A huge plus in the practicality and reliability of circulation pumps. There are no extra functions and parameters;
Possibility of buying through an online catalog At the official dealer, thanks to the photo and video of pumps provided.

Features of pumps Grundfos

The Danish company Grundfos is a leader in the design of high-quality pumping equipment. It covers half the needs of the entire world market. This company trust millions of people, as it has successfully established itself in the market for sales of circulating pumps and technique of this type.

The equipment of this company is always advanced special requirements Due to the fact that such systems should work constantly and autonomously. Also, a huge advantage of Grundfos pumping units is a high-quality warranty service.

Usually, the warranty period is given for twenty-four months, from that day when a purchase was made. Instructions for all pumps attached.

- Read about it here.

The most sought-after models

Consider some more details types of pumps Grundfos:

Pump with wet rotor GRUNDFOS ALPHA 2

Alpha 2 is an absolutely new trip to existing technologies. It is fully automated and adjusts to the system parameters. The unit significantly reduces the noise arising in the pipes.

Main characteristics:

Pump Grundfos UPS 32-30 F / 220V

The main advantage of this apparatus is its multifunctionality. Such a model has three speeds of its work, which allows you to independently choose the speed of rotation for any conditions.

The pump in question can be used in different areas use.

It can be used in such systems:

autonomous heating;
air conditioning and air cooling.

The pump has a compact size, very easily installed on their own, easy to repair and warranty service. Everything additional details And parts are not included and purchased separately in special stores.