Grundfos circulation pumps: overview of popular models, do -it -yourself installation instructions

For comfort and energy efficiency, you must make sure your house stays warm and comfortable during the winter. A circulation pump is a crucial part of a well-functioning heating system because it facilitates the efficient distribution of hot water throughout your house. The circulation pumps provided by Grundfos, a reputable brand in the market known for its dependability and performance, rank among the best options.

There are numerous models of Grundfos circulation pumps, each tailored to suit individual requirements and tastes. There is a Grundfos pump to fit every need, ranging from small, effective models for smaller homes to larger, more powerful models appropriate for larger properties. When choosing the best pump for your house, being aware of its features and capabilities can help you make an informed choice.

Grundfos circulation pumps are a great choice for do-it-yourselfers because of their remarkable ease of installation. Homeowners can save money and time by installing these pumps themselves, provided they have the necessary equipment and assistance. This post will give a general overview of a few well-known Grundfos circulation pump models as well as detailed installation instructions that can be followed at home.

For best results and energy efficiency, whether you’re installing a new heating system or upgrading your old one, selecting the appropriate circulation pump is essential. You can take charge of your home’s heating system and guarantee year-round comfort for you and your family by learning more about Grundfos circulation pumps and how to install them yourself.

We concentrate on creating a cozy and energy-efficient home environment in our guide on heating and insulation for your home. We explore the significance of well-insulated homes and energy-efficient heating systems in order to reduce energy costs and preserve a comfortable environment all year round. We go over important strategies and tactics for maximizing the insulation and heating in your house, including picking the appropriate tools and putting workable do-it-yourself fixes into practice. Whether you want to start from scratch or upgrade your current system, this guide offers helpful tips to help you create a more sustainable and comfortable living environment.

A little about the brand

To translate the Danish word Grundfos into Russian, one would hear the sound of a "spring." The issue was first raised in 1945. Currently, the company holds a prominent position in the industry as a manufacturer of hot water, sewage, and heating pumps, with its brand being represented in 45 countries.

The primary purpose of the manufactured equipment is to deliver water efficiently for domestic and drinking purposes. The company is always looking into new materials and technologies, which enables them to create cutting-edge machinery that satisfies all current quality requirements. Consequently, the user obtains energy-saving, dependable, and efficient devices.

Features of the circulation pumps "Groundfos"

This is the term for small electronics integrated into a specific region’s heating circuit. Increasing the fluid pressure in the system is their functional job. Since Grundfos brand products differ favorably from comparable pumps in many ways, they are in high demand.


Examine the components and operation of pumping equipment.

The following materials make up the device of the devices:

  • stainless steel;
  • aluminum;
  • brass;
  • bronze.

A rotor, made of steel or ceramic, is located inside the case. It is attached to a shaft that has an impeller made of technopolymer. The coolant is harmed when the pump engine starts because the blades start to rotate. The liquid circulates through the system intensely because of this process.


Danish brand devices are highly favored by consumers because of a few advantageous features.

Of the primary benefits, these are the most notable:

  1. High performance, despite the slight power. Here it must be borne in mind that this parameter does not depend on the size of the distance.
  2. Preservation of the energy of the coolant. To achieve this effect was due to the fact that the circulation occurs due to the friction force in the system.
  3. Economical electricity consumption. The fact is that pumping plants from Grindfos can operate in autonomous mode, constantly maintaining the necessary temperature of the coolant.
  4. The ability to set the desired temperature. To do this, there is a special regulator on the device housing. If the pump is installed in a system with already heated water, it will automatically maintain its temperature.
  5. Simple design. This facilitates installation work, which can be handled yourself, without the help of specialists.
  6. A wide selection of pumps. Each user will be able to choose an unit for a specific heating system, which entails saving funds.
  7. Using quality structural materials. As a result, the reliability and practicality of equipment increases. In addition, the manufacturer decided not to “stuff” the pumps with all kinds of functions and components, which reduces their final cost and makes it more durable.
  8. Guarantee. "Grundfos" gives 2 years of warranty period for all pumping equipment. Additionally, in the set with each model, there is an instruction that indicates the features of installation and operation.

This brand’s products have three operating modes that alter the fluid pumping rate when you switch between them.

Types of pumping pumps

The way these installed devices in the heating circuit are designed can have an impact on how well they function. There are two types of groundfos pumps: wet and dry rotor. Every kind has unique traits, advantages, and disadvantages.

With a wet rotor

Installed in small boiler rooms, these devices are most suitable for heating country homes. Their optimal design allows them to differ favorably in terms of compactness and silent operation.

Since they cool the electric motor with water, they are referred to as "wet." In addition to lubricating the pump, the coolant also lubricates the equipment’s details.

These devices have a 50% efficiency indicator and don’t need any extra maintenance. They can successfully carry out their duties for eight to ten years. The quality of the coolant has a big impact on the "wet" pump. It is therefore not advised to install it in the event that the water contains extraneous inclusions. Furthermore, the gadget isn’t meant for the circulation of cold liquids.

These pumps can be manually or automatically adjusted. Because the second option allows the unit to independently adjust to the characteristics of the heating network, it is thought to be more cost-effective. Silent operation is another feature that sets products with automatic adjustment apart. Additionally, the air is expelled on its own without the owner’s assistance.

When comparing the pumps’ exteriors with wet and dry rotors, the former is absent from the body and impeller.

With a dry rotor

These kinds of devices debuted a bit later than wet rotor units. The main distinction is that the pump engine does not come into contact with the liquid while it is operating.

Seventy percent of the efficiency is achieved. These kinds of devices are typically needed when pumping large amounts of coolant. As a result, it is typically installed in large rooms for commercial and residential uses. There are special seals between the rotor and the liquid in the system.

Due to their high noise level, devices with dry rotors should either be installed in a dedicated space or have special isolation installed. The design incorporates a fan to prevent overcooling of the equipment while it is in use. These kinds of devices have a six-year lifespan.

Prices for the model range of Grundfos circulation pumps

Grundfos circulation pumps

How to choose the right pump

It is important to consider the parameters of the heating circuit as well as the equipment itself when selecting pumping equipment. The money will be "thrown to the wind" if you make a mistake, which will drastically reduce the device’s effectiveness.

The following factors need to be considered when making a decision:

  • the value of heated area;
  • room temperature;
  • functionality;
  • the difference in temperature between the supply and the return;
  • pressure;
  • network characteristics;
  • The quality of the coolant.

If the right decision is made, considering every requirement, the room’s temperature will always be comfortable. The volume of the premises and the indicators that indicate when the system’s coolant needs to be warmed up must be considered when selecting power. Numerous mathematical equations can be used to determine the pump’s essential specifications.

Making computations with the average indicators in mind:

  1. In order to find out how much the unit is manufactured, temperature changes are taken into account – from +30 to +35 ° C. The power of the boiler must be divided into the resulting figure, and the result will show the flow rate, that is, performance.
  2. 0.6 m pressure is enough for a pipe 10 m long. For each model, this indicator is regulated and indicated in the passport.
  3. Heating pipes should have the same diameter as the pipes of the equipment attached. Using one pump, pumping up to 80 meters of the circuit is provided.

The pumped coolant’s temperature needs to be considered. Heating system pumps operate with a liquid that can reach temperatures of +110 °C.

You will require a more powerful installation if the pipes have a large section and the circulation contour is lengthy. If a more viscous fluid—rather than water—is used as a coolant, then more power is needed once more.

The protection class for modern pumps is IP44. This shows that water splashes are not included and that foreign objects larger than 1 mm can enter the device.

Products made by this company are becoming more and more well-known worldwide. They are utilized in the heating systems of industrial buildings, cottages, and country homes. "Groundfos" currently manufactures a number of equipment lines with different specifications and features.

UPS 25-60 180

The Grundfos UPS 25 60 180 is a circulation pump with a two-material case option. The stainless steel device is for the DIS system, while the cast-iron version is used for heating. A three-speed switch, an asynchronous engine, and a sleeve separating the rotor and starter are all part of the design.

Mounted in both the horizontal and vertical directions. You can pump coolant at different temperatures with this model, ranging from +2 to +110 °C.

  • Suitable for a closed and open circuit;
  • It is made of high -quality materials resistant to wear and corrosion;
  • economical – consumes 60 watts;
  • Small – not more than 43 dB;
  • compact – 18 × 13 × 13 cm;
  • has a small weight – 2.6 kg;
  • protected from overheating, thanks to the "wet" rotor cooled by coolant;
  • easy to install and maintain;
  • has a long service life – up to 10 years.

This unit’s hourly performance parameter is 4.3 m 3. 5.6 meters of maximum pressure. uses 0.06 kW of electricity when operating.

These pumps are used in air conditioning and heating systems, such as UPS 25 80 180. For DIA, aggregates with stainless and bronze buildings are appropriate.

The cost of the Grundfos UPS 25 40 180 MM and 25 60 180 circulation pumps is 9020 rubles.

UPS 32–40 180

This equipment works with both DIS and heating systems. It should be emphasized that since the prefilter’s design is not included, the coolant needs to be of the highest caliber—free of unwanted particles, viscous, and aggressive.

The UPS 32-40 180 is a three-speed, single-stage model. The productivity of the device can be adjusted by the user by altering the shaft’s rotational speed as needed. Pumps require continuous liquid flow to function properly because the coolant cleans and lubricates their ceramic-graphite bearings.

There is a wet rotor on this model. The unit can be installed easily and doesn’t require any extra protection since it can withstand current lock. The pump runs almost silently, so the user won’t be distracted from the case.

  • simple installation;
  • easy adjustment of the speed of rotation of the shaft;
  • built -in protective module;
  • no maintenance is required;
  • The design provides a heat relays;
  • high -quality and strong details;
  • economy.

This is a small device with a ten-year operational lifespan without any issues.

  • throughput – 2.72 m 3 per hour;
  • power – 25 watts;
  • pressure – 3.9 m;
  • Dimensions – 12.6 × 14.1 × 18 cm;
  • Weight – 2.6 kg.

The cost of the circulating pump that heats the UPS 32–40 180 HEALLY is 7200 rubles.

UPS 32–60 180

The model is regarded as universal for all systems, including heating, DHW, and air conditioning, because of its creative design. Depending on the operating conditions, different materials are used to construct the equipment housing. Furthermore, the gadget can be used in conjunction with the "warm floor" system.

Every structural detail is composed of premium, corrosion-resistant materials. The pump can last for at least ten years, even under continuous use. Customers comment on how quiet the device is, which is a significant benefit for use in the home.

  • power – 50 watts;
  • throughput – 3.35 m 3 per hour;
  • pressure – 5.75 m;
  • the maximum temperature of the coolant is up to +95 ° C;
  • mass – 2.6 kg;
  • installation – vertical or horizontal.

For home use, UPS 32-60 180 has shown to be reliable. Its power is sufficient to keep the heating circuit operating effectively.

  • simple connection to the network;
  • Thanks to ceramic bearings, silent work is ensured;
  • long service life, for which high -quality structural elements and materials are responsible
  • There is a winding of an electric motor that protects it from current lock;
  • the possibility of installing the desired rotation frequency;
  • When starting from the pump, unnecessary air is removed.

This model costs 7740 rubles to purchase.

UPS 40 120 F

Small in size and low in electricity consumption, this flange model operates quietly. The device engine features a protected stator and a wet rotor. Two sealing rings are used in place of sealing seals.

Sucked liquid for use as a bearing lubricant. The manufacturer reduced the number of parts in order to increase the structure’s reliability. The UPS 40 120 F is appropriate for air conditioning and heating.

  • It is easy to choose the right model according to various parameters;
  • 3-speed electric motor;
  • Ceramics bearings (radial);
  • The stubborn bearing is made of carbon;
  • cast -iron corps;
  • Built -in thermal relay on the stature.

Similar to the other Grindfos products, this line operates nearly silently despite having a lot of power.

  • power – 470 watts;
  • throughput – 19 m 3 per hour;
  • pressure – 12 m;
  • The temperature of the coolant is up to +120 ° C;
  • Weight – 19.1 kg.

A large country home or cottage can be connected to the heating contour with this model. Cost: starting at 33,060 rubles.

UP 15-14 but

The hot water supply system’s fluid circulation is handled by this small unit. There is an integrated thermostat and timer in the UP 15 14 BUT pump. The user can program the device’s operation by setting a timer. The purpose of a thermostat is to keep a set temperature automatically.

A spherical electric motor without bearings is a characteristic structural feature.

  • If necessary, service is easily removed by an electric motor;
  • For the manufacture of the working wheel, corrosion -resistant material is used;
  • a case made of bronze;
  • the heat -insulating casing included.

This unit’s single-phase electric motor already has protection from the manufacturer; it doesn’t need any more.

  • power – 25 watts;
  • maximum pressure – 10 bar;
  • Protection class – IP42;
  • weight – 1 kg;
  • pressure – 1.2 m;
  • fluid temperature – up to +95 ° C;
  • Call – 0.5 m 3 per hour.

This model for DHW has an initial cost of 7080 rubles.

UPA 15–90 n

This unit’s scope includes DIA, air conditioning, heating, and heating. Because of the way it is made, the device can react to system changes more quickly because its working wheel is in contact with the coolant.

  • 3 stages of speed adjustment;
  • the presence of built -in thermal protection;
  • compact dimensions;
  • stability to the formation of corrosion.

This model’s functional task is to raise the system’s pressure. All you have to do to turn the device on and off is open or close the tap. It can even be installed in an apartment because of its silent operation.

  • power – 0.118 kW;
  • pressure – 8 m;
  • performance – 1.8 m 3 per hour;
  • pressure – 6 bar;
  • Protection – IP 42.

UPA 15 90 N is available for 7500 rubles.

Alpha2 l 25–40 180

This is a high-performance model that is both convenient and readily available in the current market. Apart from its small size, the device has outstanding performance characteristics. The unit is appropriate for air conditioning and cooling, heating, and hydraulic engineering because of its creative construction.

  • easy installation;
  • consumes a minimum of electricity;
  • high efficiency, which is achieved thanks to the frequency converter, the most compact stature and permanent magnets;
  • The technical indicators of the device are automatically adapted to the features of the system;
  • easy control – just one key;
  • the presence of a display on the case, which is needed to control the work.

This pump comes with a branded plug fork that is made especially for this line, so anyone can install it. Working in "Night mode," which dramatically reduces electricity consumption, is a requirement of equipment automation.

  • power – from 5 to 22 watts;
  • pressure – 4 m;
  • productivity – 2.4 m 3 per hour;
  • pressure – 10 bar;
  • weight – 2.3 kg;
  • Protection – IP42.

Alpha2 l 24-40 180-from 7600 rubles in price.

Alpha3 25-40 130

The previous model has been updated to be even more technologically advanced and functional. Two mobile applications and bilateral data transfer are supported by the pump. That is, a smartphone allows the user to customize the device’s operating parameters, greatly facilitating its use.

There are three control modes available for different contours: a "warm floor," a combination scheme, and radiators. By automatically adjusting to the heating circuit, Alpha3 maximizes the amount of electricity used. You are able to configure the device’s work schedule with the help of the mobile application.

  • simple remote control;
  • night and summer operating modes for various systems;
  • protection against "dry" move;
  • energy -efficient and reliable electric motor on permanent magnets;
  • the presence of built -in thermal protection;
  • connection by means of a special plug;
  • Equipment is equipped with threaded joints.

This model’s unique hydraulic balancing lets you save up to 20% on fuel, which occasionally lowers operating expenses.

  • Power – 18 W;
  • pressure – 4 m;
  • productivity – 2.6 m 3 per hour;
  • pressure – 10 bar;
  • Weight – 2 kg.

The initial cost is 19580 rubles.


Small, medium, and large pumps situated in commercial rooms are included in this line. Every model has an engine with an adjustable speed and a connection.

The equipment is very easy to configure; all you need to do is plug it in, leave it in factory default mode, and turn on AutoAdapt. Because of this, the pump will modify its own settings based on the features of the system. This will result in the highest degree of comfort and the least amount of energy used.

Magna is a flexible and reliable equipment that has a long -term operational period and does not require maintenance. Thanks to the built-in IR communication system to the device, you can connect the extensions modules, thereby simplifying its operation.

  • pressure and temperature adjustment;
  • various working modes;
  • The electric motor does not require external protection;
  • equipped with a heat -insulating casing;
  • economy;
  • TFT display;
  • Convenient control panel;
  • The ability to connect several pumps.

The Magna line currently offers a number of models, each with unique features. The apparatus can supply up to 70 m 3 of water at a maximum pressure of 18 meters in an hour. There is no working pressure indication higher than 16 bar.

Grundfos Magna3 25–40 is priced starting at 39,700 rubles.

Do -it -yourself step -by -step instructions

Installing the unit on a horizontal plane will enable it to function as intended. Wet rotor equipment is installed on the supply circuit, and dry rotor equipment is installed on the return. The truth is that rubber or paronite gaskets—which rapidly degrade in the presence of elevated temperatures—are utilized in "dry" execution.

Installing a gross cleaning filter in front of the heating pump is preferable. Preventing small impurities from entering equipment is essential. The equipment’s lifespan will increase as a result.

Occasionally, power is cut off in the area where the equipment is situated. In order for the pump to operate continuously, the bypass needs to be installed additionally.

During installation, some users are unable to determine which way the pipes should be pointed. Because the manufacturer considered this feature, pressure equipment housings have an arrow indicating the direction in which the rotor rotates, and consequently, the coolant rotates.

Fasteners are typically not included in the sale of circulation equipment, so you will need to buy them separately. Experts advise utilizing a different cable that comes from a distribution panel to connect the device to the network.

The primary phases of the work:

  1. All liquid is drained from the heating contour. If it has long been in operation, high -quality flushing is recommended.
  2. Wiring areas are cut to connect the equipment. A bypass is placed between the inserts, which should supplement the check valve or ball valve. This will protect plastic liners during welding.
  3. Wage pipeline is equipped with shut -off valves.
  4. Crushing filter is mounted.
  5. A maevo or automatic air valve is installed in the upper part of the bypas.
  6. The pump crashes. If the model is equipped with a “wet” rotor, then it should be placed horizontally.
  7. To connect to the network, it is better to use a separate outlet with grounding.
  8. The pump is filled with the coolant, its performance is checked.

It appears that the installation is not difficult at first. However, this is limited to seasoned users. It is advised to thoroughly read the instructions that are attached to the equipment because different issues may arise in real-world situations. It is best to invite a specialist if experience is insufficient, as they will ensure that the unit is correctly set up and all requirements are taken into account. See our website’s content on long-burning stoves.

Popular Models DIY Installation Instructions
Grundfos Alpha 2 1. Shut off power to the pump. 2. Drain the system. 3. Mount the pump correctly. 4. Connect the pipes securely. 5. Ensure proper electrical connections. 6. Prime the pump. 7. Turn the power back on.
Grundfos Magna3 1. Turn off power. 2. Drain system if necessary. 3. Install pump in the right orientation. 4. Connect inlet and outlet pipes. 5. Check electrical connections. 6. Prime the pump if required. 7. Restore power to the pump.

For your heating system to operate efficiently and provide comfort in your house, selecting the appropriate circulation pump is essential. A variety of well-liked models from Grundfos are available to suit different demands and price ranges. Grundfos pumps are energy-efficient and available in a variety of series, from the adaptable UPS series to the energy-efficient Alpha series.

Many homeowners choose to do their own installation in order to save money and obtain a deeper understanding of their heating system. Fortunately, with the right tools and a little technical know-how, installing a Grundfos circulation pump is a fairly simple procedure.

It’s important to read the manufacturer’s instructions carefully and become familiar with the particular model you have chosen before beginning installation. This will guarantee that you comprehend the prerequisites and procedures associated with the installation procedure.

To avoid spills or mishaps, turn off the heating system’s electricity and remove any extra water. After that, carefully remove the old pump, being mindful of any connections and its orientation. To guarantee that the installation goes smoothly, tidy the surrounding area.

Next, install the new Grundfos pump in accordance with the manufacturer’s instructions, making sure to connect any required pipes or fittings and secure it firmly in place. Before turning the heating system back on, make sure all of the connections are secure and free of leaks by checking them twice.

Make sure the pump is operating correctly by giving it a thorough test after installation. Keep an eye out for any indications of leaks or anomalies in the system and make any required modifications as needed.

You can increase your home’s comfort and peace of mind while simultaneously optimizing the efficiency and performance of your heating system by carefully following the instructions provided for do-it-yourself installation and selecting the appropriate Grundfos circulation pump.

Video on the topic

Grundfos circulation pump connection diagram

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Sergey Ivanov

I like to help people create comfort and comfort in their homes. I share my experience and knowledge in articles so that you can make the right choice of a heating and insulation system for your home.

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