The Danish company Grundfos UPS is well known for its excellent performance. The Grundfos concern deservedly and fairly takes first place in the world pumping equipment market. The Danish company has over 60 years of experience in the design and implementation of innovative solutions in production. Designers use the unique Grundfos pump selection program, and confidently push European products to the main contractor positions, performing tasks in all areas of water supply and sanitation, including heating aspects.
Since its inception, the company has provided solutions and equipment that go far beyond its time. The leading place on the pedestal allows us to call the Grundfos company a trendsetter in the design and production of pumping equipment. The main conceptual task at Grundfos is to teach designers, builders, and customers to select pumping equipment, taking into account the increase in the energy efficiency of the task.
The main advantage of a wet rotor is absolute quiet operation despite continuous load. Residents of country houses and the private sector appreciated the innovation of the Danish company, the grundfos pump brought the capabilities of the heating system to a new qualitative level, increasing its efficiency many times over.
Despite the lower efficiency indicators in comparison with the traditional, separate layout of the hydraulic part and the electric motor, the grundfos concern's wet rotor occupies a leading position in terms of sales. The buyer is ready to pay a high price for the comfort in the house and the comfort of his loved ones.
Grundfos UPS pump. Overview
We will begin our journey into the world of pumps of the Grundfos concern with an acquaintance with the household series of circulation pumps. Back in 1959, the company presented its first circulation pump for heating with the same name grundfos. All models of the series are successfully used in the forced heating system of private houses. A special place in the series is occupied by the time-tested UPS pumps.
Each Grundfos UPS pump is equipped with a three-speed switch to better match the hydraulic parameters of the system. The pump is manufactured in two versions with different frequencies from 50 Hz for Russia and from 60 Hz for European consumers. The series is used in both open and closed heating systems.
Structurally, UPS pumps are made using the "wet-rotor" technology, in a word, the hydraulic part of the pump and the motor are a single whole. In this design, the rotor is completely sealed. This solution eliminates the need for a mechanical seal; instead, only a pair of oil seals are used. In addition, the pump does not have an impeller for cooling the engine, and the pumped liquid protects it from overheating, it also acts as a lubricating element for bearings.
The Grundfos UPS pump circulates the heating medium in heating and air conditioning systems. Special production of pumps made of bronze and even stainless steel, solve the problem of using them in hot water supply.
The Grundfos UPS pump currently has 28 items. This diversity is explained by the need for a more accurate selection of the pump in modern heating systems. Despite the abundance of names, all models are easy to remember, it is enough just to remember the marking.
Grundfos UPS pump marking:
Consider a circulation pump using the example of a Grundfos UPS 25-40 pump:
- Up - designation of equipment such as a circulation pump;
- S - pump equipment with a speed switch;
- 25 - pipe diameter, mm. (there are pumps for 25.32, and 40 mm);
- 40 - the highest indicator of pressure, dm (40 dm = 4 m) - at the third speed.
Additionally, you can remember that there are pumps with the index "F", for example, the Grundfos UPS 40-100 F pump, this index "F" designates the flange connection of the pump to the pipe. In addition, there are pumps with an installation length of 130 mm, then the designation contains such a marking UPS 25-40 130.
Pumps with a length of 130 mm are most often used in confined spaces such as wall-hung boilers.
Equipment with a flange connection, due to the small size of the pump, is used in isolated cases for a pipe of 40 mm. In general, standard pumps with an installation length of 180 mm and with connecting nuts for a pipe of 25 mm are used. - nuts one and a half inches G1 1/2 ″, for a pipe 32 mm. nuts two inches G2 ″.
It is worth noting that the manufacturer equips UPS pumps with nuts, which largely relieves the buyer from possible misunderstandings, such as buying nuts of unsuitable sizes. Recently, additions have been made to the grundfos pump casing - there are “sags”, it is convenient for them to hold the pump with a wrench.
Grundfos UPS pump with letter “A”
A special model is the Grundfos UPS pump with the letter “A”, in fact it is a hybrid of a circulation pump combined with an air separator. The model allows you to successfully separate the air contained in the water and remove it using an air vent.
The pump is installed in the direction of the flow of water flow from bottom to top. It should be borne in mind that the air vent itself is not included in the delivery set of the pumps and is sold as an accessory. The air vent is installed by screwing in, for this the housing is equipped with an Rp 3/8 “female thread.
Grundfos UPS pump, selection. Selection table.
If we want to choose the right Grundfos UPS circulation pump, first, we need to decide on such characteristics as head = H in meters, and flow = Q in cubic meters. Then you need to calculate how much heat will be needed to heat your area.
For this, a boiler with a capacity is initially selected based on the parameters of the house. The calculation is not easy, you will need the size of the area, you will have to take into account the number of radiators in the system, take into account the insulation of the house, decide on the installation of windows, the height of the ceilings, and so on and so forth. We advise that it is better to leave the calculation at the mercy of specialists and experienced installers.
As a result of the calculations, we will get the desired values, with the help of them, according to the graphs of the hydraulic curves, we select the pump. But for simplicity, you can use the pump selection table depending on the area of the house. In addition, as we know, the Grundfos UPS pump has three speeds, with which we will adapt the pump to our system.
| Heated area (m2) | Productivity (m3 / hour) | Grundfos UPS brands |
| 80 – 240 | 0.5 to 2.5 | UPS 25 - 40 |
| 100 – 265 | 0.5 to 2.5 | UPS 32 - 40 |
| 140 – 270 | 0.5 to 2.7 | UPS 25 - 60 |
| 165 – 310 | 0.5 to 2.7 | UPS 32 - 60 |
As you can see from the above table, for the owner of a two-story house with an area of 100-265 m2, a Grundfos UPS 32/40 or UPS 32/60 pump for heating is recommended in the presence of water heated floors. The decision to consult with your installers of the heating system is welcome, they know your system more accurately and, based on experience, will suggest the best size of the grundfos pump. You can also select a UPS pump based on the known boiler power according to the table below:
In this matter, the rule does not work - the more powerful the better, since an oversized pump in terms of hydraulic indicators, firstly, consumes more electricity, which leads to low energy efficiency. Secondly, the piping system can make noise, delivering significant discomfort to your household. In the video, the legendary pump Grundfos UPS 25-40 180.
Circulation pump Grundfos UPS0 25 / 65-130
Art. The P321 is a 3-speed circulating pump designed to operate in heating systems that have a stable or low-change flow rate.Using a conventional switch, you can set the speed that you need, depending on the network consumption.
Application area:
Heating, hot water supply
Model designation UPS 25-65 130; Art. ICMA-P321
| UPS | 3-speed circulation pump |
| 25 | Internal diameter of branch pipes, mm |
| 65 | Maximum head, dm |
| [] | Body design - cast iron |
| 130 | Installation length, mm |
This pump model is equipped with a glandless motor and protected stator, without gland seals, with two O-rings. The bearings are rotationally lubricated with the pumped liquid.
Distinctive features of the pump:
Ceramic shaft and radial bearings.
• Axial bearing in graphite.
• The rotor sleeve and bearing cage are made of stainless steel.
• Corrosion-resistant impeller.
• Cast iron body.
• 1-phase electric motor requiring no additional protection.
Benefits:
The motor winding of the P321 pump is resistant to blocking current, so you do not need additional protection. The durability and quietness of the pumps of this series is achieved due to the system of ceramic plain bearings. The pump has a hollow shaft - thanks to it, at start-up, air is quickly removed from the pump.
Installation features:
Reliable fixation when tightening the threaded connections is provided by the turnkey surfaces located on the pump nozzles. The wires are fastened in the terminal box with spring clips.
Grundfos UPS 25-65 pumps are used to circulate water in heating systems, hot water supply and underfloor heating systems. The main advantages of Grundfos UPS 25-65: • simple electrical connection. • The system of ceramic plain bearings provides durability and noiselessness due to the high hardness and low coefficient of linear expansion of the ceramic. • The durability of the Grundfos UPS 25-65 pump is ensured by an aluminum motor housing, a cast iron pump housing, and a protected stator. • the windings of the Grundfos UPS 25-65 pump motor are resistant to blocking current, so no additional protection is required. • depending on the needs of the network, using a simple and convenient switch, you can set the required speed. • The hollow shaft of the pump allows for rapid air removal from the Grundfos UPS 25-65 pump at start-up. • wide range of applications. • Grundfos ups 25 65 pumps are maintenance-free. • long service life. • low operational cost. • 2 year warranty.
Circulation pump Grundfoss UPS 25 65 mounting base 130 mm. The boiler series of gray circulation pumps Grundfos UPS is used in assembly with heating boilers and heating distribution manifolds, solar collector heating systems.
Grundfos ups pump specifications
Technical data for the grundfos UPS pump are presented in the catalog in the documentation section. Below we propose to consider the summary field of hydraulic characteristics.
We want to give a rather trivial advice that it is better to buy a Grundfos UPS pump in a specialized store from an authorized dealer. There are many fakes in the markets where grundfos can be easily confused with low-quality manufacturers. Counterfeits of Grundfos UPS pumps are indistinguishable to non-experts, so be prudent and do not fall for the tricks of the crooks. The video highlights the typical differences between the original and the fake:
Grundfos takes care not only of promoting products on the market by expanding the dealer network, but also creates conditions for warranty support. When purchasing a Grundfos UPS pump, the customer can always count on technical support.
Summing up
The Danes have set a high trend in quality, the Grundfos pump has been at the forefront of the pedestal for many years. The scope of Grundfos equipment is extremely wide. Today we examined a household pump UPS, installed in order to increase the flow rate of the coolant, and faster delivery of hot medium to heating radiators.
However, do not forget about the optimal ratio of the speed of the coolant and the diameter of the pipeline system. High speed will cause hum, insufficient speed, freeze your household. If you are not sure that you can choose the right grundfos pump, it is better to use the help of a specialist.
In addition, grundfos pumping equipment is effectively used in the organization of hot water supply. The Grundfos pump will become an indispensable tool in the installation of water-filled underfloor heating systems. Grundfos pumps can often be found as part of finished boiler equipment; BAXI gas boilers are a prime example. It is difficult to imagine the functioning of central air conditioning and ventilation systems without a Grundfos pump.
As a tip, we add, it is better to tie a double-circuit boiler using a Grundfos Alpha pump. The demand for Grundfos Alpha pumps is growing strongly during installation activities for the installation of underfloor heating. Household series Grundfos UPS, less powerful, the circulation pump pushes the water column only 80 meters. For higher needs, there is the Grundfos MAGNA 3 range.
Technical characteristics and scope of operation
The marking is unambiguously deciphered - alphabetic and digital designations are inherent in all types, models and manufacturers of pumping equipment. Specifically about the presented option:
- International labeling of circulation units - UP. S - means the ability to adjust the speed.
- The pipe diameter and the pressure parameter are 25 mm and 40 dm, respectively. This indicates a good ability of the pump to provide the home network with hot media without interruption.
- Power up to 45 W. At the same time, the pump of this series is considered economical, consuming 0.2 A.
- Weight and length - 180 mm and 2.6 kg - allow you to easily install the GRUNDFOS circulation pump on your own, without resorting to the services of specialists.
The marking on the pump contains a small setting table, allowing manual adjustment of the device to optimize for individual requirements and consumption.
Models and main specifications
Circulation pumps are single and twin, with wet or dry rotor, single-speed or multi-speed. There are more than 25 models of UPS series circulation pumps.
Grundfos UPS 25-40 is an affordable electric pump. It is small-sized, with economical power consumption and low noise level. In this pump, the electric motor and rotor are isolated from the heating medium. This type of pump is called dry. There are 3 operating speeds, which are switched using a lever, and built-in automation.
Circulation pump Grundfos UPS 25-40 130
UPS 25-40 180 is a single-stage pump with an impeller. Resistant to temperature changes. The motor is resistant to voltage surges. Does not need to be dismantled for maintenance.
Model 20-60 UPS is a modification that differs in more functionality than 25-40. In addition to heating, it is used in hot water supply and air conditioning. Designed for media with a pressure not exceeding 10 bar and a head of 1.62 m.
UPS 25-60 180 is a single-stage electrically driven glandless pump. Its work is almost noiseless, we have low power consumption.
Grundfos UPS 20-60 130 is a wet rotor model. Protection class IP 44. Designed for use in heating with increased responsibility. Pressure - up to 15 bar, power 115 W, temperature regime - from -25 to +110 degrees. Consists of a cast iron casing with a reinforced polymer impeller.
Model 32-80 180 works on demand of the user - constantly or on a timer. It is possible to program the operating mode. It can be mounted in any position, adapts well to unstable water supply.
The Grundfos UPS 65 has a wet rotor motor and a protected stator. The body is made of cast iron. During installation, the motor shaft is placed strictly in a horizontal position. Withstands short-term coolant temperature up to + 140 ° C. GrundfosUPS 65 has a built-in motor speed switch for economical power consumption.
UPS 32-80 180 has three operating speeds, cast iron housing, corrosion-resistant impeller, graphite bearing. Designed for pumping water in swimming pools.
Double circulation pump Grundfos UPSD 40-60 / 2 F
Grundfos UPS 32-60 is used in underfloor heating, hot water supply and heating systems. Only pumps clean liquids.
32-80 UPS - high performance, while economical. It is used in heating, air conditioning and hot water supply.
UPS 25-40 130 is mainly used in the heating system. Installation is done both on pipes and on a gas boiler.
GrundfosUP 15-14 bt features stable motor windings and does not require additional protection. Its function is to recirculate domestic hot water. Feature - 12-pole motors that run on magnets. Special lead-free housing, corrosion-resistant.
UPS 15-50 is a glandless pump for pumping clean liquids.
The UPS 40 120f pump operates at temperatures from -10 to + 110˚С, short-term operation at + 140˚С is possible.
GrundfosUPS 15-14 but is mainly used in hot water systems, there is a timer and a thermostat. Its motor is without bearings, which greatly reduces power consumption.
UPS 32 120 f is a flanged glandless pump. Equipped with overheating protection function. A relay module can be installed to fully protect the motor.
UPS 25-120 180 is widely used in heating systems, including those located under the floor.
Circulation pump Grundfos UP 20-14
UP 15-14 BPM - recirculation pump, used for hot water supply. Heat carrier temperature + 2- + 95˚С. Has a heat-insulating casing.
UPS 15-14 BAPM is used for DHW.
GrundfosUPS 32-100 is a wet rotor model for heating systems.
GrundfosUP 20-15 N is a surface-mounted circulation pump with ceramic bearings. Has a heat-insulating casing. Corrosion-free thanks to cast iron and stainless steel.
UPS 50-602 F is a single-phase circulation pump. The motor is made of ceramic and the bearing is made of graphite. There is a built-in thermal sensor.
UP 20-14 BXAPM - recirculating, spherical rotor. Purpose - circulation of hot water in everyday life. Installed in systems with return piping. Brass is used to make the pump body.
UP 20-45 NGrundfos is a single speed pump for potable water applications.
How to identify a fake pump Grundfos UPS 25 40 180 (video)
Examples of power calculation and selection of UPS for circulation pumps
Let's calculate several options for pumps:
| Grundfos Alpha2 L 32-60 | Grundfos UPS 32-60 | Wilo Star RS15 / 6-130 | UNIPUMP UPC32-60 |
We believe that we are faced with the task of selecting sets for two options for autonomous operation time: 6-8 and 14-16 hours with continuous operation of the pump.
| Pump model | Max. power | Energy efficiency class | Starting power | Power reserve of 20% | Min. UPS power for pump protection |
| Grundfos Alpha2 L 32-60 | 45 watts | A | 45 W * 1.3 = 59 W | 59 W * 1.2 = 71 W | 500 VA / 300 W |
| Grundfos UPS 32-60 | 60 watts | B | 60 W * 5 = 300 W | 300 W * 1.2 = 360 W | 1000 VA / 600-800 W |
| Wilo Star RS15 / 6-130 | 84 watts | B | 84 W * 5 = 420 W | 420 W * 1.2 = 504 W | 1000 VA / 600-800 W |
| UNIPUMP UPC32-60 | 100 watts | Unknown | 100 W * 5 = 500 W | 500 W * 1.2 = 600 W | 1000 VA / 600-800 W |
For the Grundfos Alpha2 L 32-60 (45 W) pump from our range, the following options for uninterruptible power supplies can be offered:
| Eltena Intelligent 500LT2 500 VA / 300 W Line-Interactive 13,218 RUB | SVEN RT-500 500 VA / 300 W Line-Interactive 7 906 RUB | East Home 300 or East Home 300W 300 VA / 300 W Line-Interactive 8 314 R |
| All UPSs operate with one external battery.Battery life with battery capacity 33 Ah - 7 hours , 65 Ah - 14 hours . | ||
Uninterruptible power supply options for pumps Grundfos UPS 32-60 (60 W), Wilo Star RS15 / 6-130 (84 W) and UNIPUMP UPC32-60 (100 W):
| UPS name | Grundfos UPS 32-60 (60 W) Qty * battery capacity Autonomy time | Wilo Star RS15 / 6-130 (84 W) Qty * battery capacity Autonomy time | UNIPUMP UPC 32-60 (100W) Qty * battery capacity Autonomy time |
| East Home 600 or East Home 600W 600 VA / 600 W Line-Interactive 11 640 RUB | 1 PC. * 40 Ah 6 hours 20 minutes | 1 PC. * 65 Ah 7 hours 20 minutes | 1 PC. * 75 Ah 7 hours 10 minutes |
| 1 PC. * 100 Ah 16 hours | 1 PC. * 135 Ah 15 hours 20 minutes | 1 PC. * 150 Ah 14 hours 30 minutes | |
| Eltena Intelligent 1000LT2 1000 VA / 600 W Line-Interactive 19 187 RUB | 2 pcs. * 28 Ah 9 hours | 2 pcs. * 28 Ah 6 hours 10 minutes | 2 pcs. * 33 Ah 6 hours 10 minutes |
| 2 pcs. * 45 Ah 14 hours 30 minutes | 2 pcs. * 65 Ah 14 hours 50 minutes | 2 pcs. * 75 Ah 14 hours 30 minutes | |
| Helior Sigma 1 KSL-12V 1000 VA / 800 W On-Line 19 678 RUB | 1 PC. * 38 Ah 7 hours | 1 PC. * 55 Ah 7 hours 10 minutes | 1 PC. * 65 Ah 7 hours 10 minutes |
| 1 PC. * 75 Ah 14 hours | 1 PC. * 120 Ah 15 hours 40 minutes | 1 PC. * 150 Ah 16 hours 50 minutes | |
| Powerman Online 1000 Plus 1000 VA / 800 W On-Line 17 807 RUB | 2 pcs. * 20 Ah 7 hours 20 minutes | 2 pcs. * 28 Ah 7 hours 20 minutes | 2 pcs. * 33 Ah 7 hours 20 minutes |
| 2 pcs. * 38 Ah 14 hours | 2 pcs. * 55 Ah 14 hours 20 minutes | 2 pcs. * 65 Ah 14 hours 30 minutes | |
| East EA900Pro-H 1kVA 1000 VA / 800 W On-Line 16 382 R | – | – | 3 pcs. * 27 Ah 9 hours |
| 3 pcs. * 27 Ah 15 hours | 3 pcs. * 38 Ah 15 hours | 3 pcs. * 42 Ah 14 hours |
The tables show uninterruptible power supply units for pumps that have proven themselves well in customer reviews and which we keep in stock on a permanent basis.
Now it remains to decide which option is most acceptable. It makes sense to take into account the duration of the warranty period, the presence of service centers in your region, the availability of space in the boiler room for installing the UPS and battery pack, the cost of the proposed equipment sets. Well, and like / dislike, in the end.
Design features and benefits
The circulating pump has a compact size, it can be easily installed both in general heating systems and in special-purpose systems. The features of the Grundfos line pumps are that they redirect water by changing the pressure, and not by direct pumping.
The body of the Grundfos UPS 25 40 unit is cast iron, the stator is separated from the working part by a stainless steel glass. The optimal operating mode is adjusted by choosing one of three possible engine speed.
The advantages of the model include:
- Thanks to the separately mounted engine, its repair does not require intervention in the design of the entire system;
- The coolant, flowing through the unit, cools and lubricates its elements;
- Ceramic bearings, specially designed for high-temperature environments, give the device high wear resistance and guarantee a long operating period;
- The hollow shaft design leads to an immediate air release, which prevents water hammer in the system.
The upgraded version of the Grundfos Alpha2 25 40 circulation pump is recognized as the most efficient model. The device significantly reduces energy consumption and improves the ecological balance.
Pump selection
Grundfos circulation pumps for heating are on sale today. If you decide to prefer the products of this manufacturer, then you should know on the basis of what the choice is made. Other key features include productivity, which will determine productivity. This parameter is calculated under conditions of minimum equipment utilization.
The Grundfos circulation pump for heating, the price of which is also important, is selected taking into account the pressure, that is, the possible pressure. You should pay attention to the working conditions, which are expressed in terms of the volume of the heated room, temperature, as well as the type of liquid to be distilled and the diameter of the pipe.
In addition, the pump operates taking into account external factors, among which should be highlighted:
- complexity of service;
- noise level during operation;
- sizes.
The smaller the device, the quieter it will be. From this point of view, a wet type circulation pump is suitable for installation in a heating system.
