Heating systems in which the coolant circulates in a natural way according to the law of gravity are less and less common, and only where a small area is heated with a single-circuit boiler.
Provide quality movement hot water Wilo circulation pumps will help you through pipes and batteries. They do their job well in large houses with complex heating systems. Do right choice modern and compact device that will show effective work, will help a review of Vilo models and instructions from the manufacturer.
All German-made units are distinguished by their reliability, ease of installation and the ability to reduce the diameter of the pipes, which makes it possible to reduce the cost of heating installation.
For the complete heating of private houses, two series of Wilo pumps have been specially developed, which differ slightly in technical characteristics.
This range of pumps has a low power and is suitable for use in homes with an area of 200 - 750 m².
The main advantage of this series is the wet rotor. It is continuously immersed in the pumped energy carrier, which prevents the graphite bearings from drying out. Another plus of Star-RS is that technical polymer is used here for the production of the rotor wheel.
This material is resistant to impact high temperatures, typical for heating systems, and is not afraid of their sharp drop.
The Vilo circulation pump is connected to the pipeline using a thread, the diameter of which may differ depending on the model. The unit has a cast iron body and a stainless steel shaft.
A comfortable working environment for such a device is water or a water-glycol composition. Star-RS pumps for compulsory heating systems practically silent. They quickly pump the coolant and consume little electricity.
German equipment of this series has gained great popularity due to the following advantages:
Appliances for heating systems of the Star-RS series can be operated in temperature conditions+10 +110 ° C at pressures up to 10 bar, which makes them suitable for use in air conditioning.
When installing Vilo Star-RS, the manufacturer's instructions must be strictly followed, which states that:
Models in this series are designed for use in buildings up to 1400 m². These pumps, with one or three-phase connection, guarantee rapid pumping of hot water through pipes and radiators.
In their manufacture, materials similar to the previous line from the German company Wilo were used.
The equipment operates at a temperature of +20 + 130 ° C, and for two hours the units can operate without interruption if the maximum temperature rises by 10 ° C. Allowable pressure equal to 6, 10 or 16 bar (special version). As in the previous case, the rpm is regulated by a three-stage switch.
Vilo TOP-S series is produced with increased motor protection and thermal insulating casing. The versatility of Wilo equipment is due to the double-sided cable connection and the configuration with a combined flange 6/10 bar (for models with an inner diameter of 40 - 65 mm).
Circulation pumps from the German company Wilo successfully compete with similar devices due to the fact that they are made of anti-corrosion materials and can work with various heat carriers.
They are durable and easy to operate, besides they consume electricity economically. Another important factor that affects demand is the compact dimensions of the units with their multi-stage protection.
Given the popularity of Vilo products for heating systems, there is a risk of acquiring a fake. To avoid any trouble with your purchase, pay attention to the following signs of the original:
In order to have an idea of the technical parameters of Vilo products, we suggest that you familiarize yourself with the main parameters of the devices. The table shows the average price of the product, which is presented on Russian market plumbing.
Installation and operating instructions
Circulation pumps WILO
Series: RP, P,
DOP, DOS.
Circulation pumps are designed for pumping liquid in a closed pipe system.
Main areas of application:
Water heating systems;
Cooling and air conditioning systems;
Industrial systems.
1.2 Technical specifications pumps
1.2.1 Build series
To satisfy technical requirements different systems several types of circulation pumps are produced. They are combined into the following design series:
- Series RP, P, Max. speed 1400 rpm, 4 speed stages,
- RP -
- P -
- Series RS, S, Max. speed 2700 rpm, 4 stages
speed,
- RS - pump with threaded pipe connection,
- S - flanged pump.
- Constructive series DOP, DOS, twin pumps, 4 speed stages,
- DOP - Max. speed 1400 rpm, with flange connection,
- DOS - Max. speed 2700 rpm, with flange connection.
1.2.2 Key to symbols
| DO S 32 / 80 r | |||||||
| Twin pump | |||||||
| R®with threaded connection, without R®with flange | |||||||
| S®max. speed 2700 rpm. (P®1400 rpm.) | |||||||
| Nominal int. diameter pipe connection | |||||||
| Impeller diameter in mm | |||||||
| The presence of 4 stages of switching the number of revolutions | |||||||
The pumped-over medium:
· Heating system water in accordance with VDI 2035 standards;
· Mixture of water and glycol in a ratio of max. 1: 1. The addition of glycol increases the viscosity of the fluid, therefore the hydraulic and power data of the pump must be adjusted based on the percentage of glycol. Use only high quality antifreeze with corrosion protection properties, follow the manufacturer's instructions;
· The use of other fluids must be agreed with WILO;
The admissible temperature of the pumped medium is -10 ° C to + 130 ° C, for a short time up to 140 ° C. The pumps are protected against the penetration of condensation moisture;
Maximum permissible ambient temperature + 40 ° C;
Maximum allowable operating pressure according to the type table;
The minimum pressure at the pump suction connection depends on the pump type and on the water temperature:
| Pump types | Minimum pressure P min [kg / cm 2] |
|||
| at temperature [° C] |
||||
| 50 | 95 | 110 | 130 |
|
| all RP, P, DOP, DOS up to P 1 max = 250W | 0,05 | 0,2 | 0,8 | 2,1 |
| P and DOP with Æ = 125, DOP with D = 50 and Æ = 100 | 0,05 | 0,3 | 0,9 | 2,2 |
| P c Æ = 160, RS with Dn = 30 and Æ = 100, S c Æ = 80 ... 100 | 0,05 | 0,5 | 1,1 | 2,4 |
| P c Æ = 200/250, S c Æ = 125, DOS c Æ = 125 | 0,3 | 1,0 | 1,6 | 2,9 |
| S and DOS c Æ = 140 | 0,5 | 1,2 | 1,8 | 3,1 |
DN = Nominal connection diameter
- Supply voltage according to the type table.
Maximum power consumption according to the typical table.
Nominal connection diameter according to type key
Day 25: R 1 (Æi 28)
Day 30: R 1 1/4 (Æi 35)
Day> 32: flange connection(DN ...) with a hole for connecting a pressure measuring device with a diameter of Rp 1/8.
2 Safety precautions
This manual contains all important information that must be observed during installation and operation. Therefore, installers and operators should carefully read these instructions. Observe not only the instructions given here, but also the special safety instructions given in the following instruction articles.
2.1 Special characters
All safety instructions which, if not followed, could result in damage to the pump and pose a risk to human life, are marked with the symbol:
Electrical voltage warning:
Instructions which, if not followed, may result in malfunction of the unit or individual parts, are marked with the symbol:
| ATTENTION! |
ATTENTION!
2.2 Personnel qualifications
Installation should only be carried out by qualified personnel.
2.3 Consequences of non-observance of the safety instructions
Failure to follow the instructions can result in severe consequences for personnel and damage to the unit. In addition, it can lead to the deprivation of the right to compensation for damage.
In particular, non-observance of the instructions can lead to the following consequences:
Refusal important functions installations;
Danger to human health and life due to electrical or mechanical influences.
2.4 Safety instructions during operation
Observe the safety instructions!
In particular, follow all local regulations and safety regulations.
2.5 Safety instructions for inspection and installation work
Care should be taken to ensure that all inspection and installation work carried out only by qualified personnel in this field and after careful study of this manual.
The pump check can only be carried out in a completely stopped state.
2.6 Unauthorized adjustments and production of spare parts
Any changes to the installation are only permitted with the prior consent of the manufacturer. Genuine spare parts and accessories from the manufacturer are a guarantee of your safety. The use of other spare parts relieves the manufacturer of responsibility for the possible consequences.
2.7 Inadmissible modes of operation
The operational safety of the supplied unit is guaranteed only if it is used only for the conditions and purposes specified in this manual.
In no case should the data specified in the attached passport be exceeded.
3 Transport and storage
ATTENTION!
During transportation and storage, protect the pumps from moisture and mechanical damage.
4 Description of pumps and accessories
4.1 Description of wet running pumps
In wet running pumps, all moving parts, including the motor rotor, are washed with fluid. No shaft seal required. The fluid lubricates the plain bearings, cools them and the rotor.
Twin pumps are identical and are installed in the same housing. They are equipped with an integrated changeover valve. Each pump can work autonomously, as well as both at the same time. Twin pumps can be used in two different versions:
Working and standby pump (in case of failure of the main pump, the standby is put into operation);
Main and peak pump (the latter is switched on additionally at peak loads).
At the same time, both pumps can differ in terms of installed capacities. A twin pump installation can therefore be adjusted to an individual operating situation.
Pump motor:
For single-phase 220 V: special motor for single-phase operation only;
For three-phase 380 V: special motor for three-phase current only. The motor cannot be connected according to the Steinmetz scheme.
Engine protection:
Pumps with an inner diameter of 25/30/40 and an impeller up to 80 mm (single-phase and three-phase current) do not need motor protection. Overload current cannot damage the motor and cause it to block.
All other pump motors are equipped with a winding contact protection (WSK). In the event of impermissible overheating of the motor, protection by means of a switch, eg SK 602/622 or C-SK (accessory), switches off the motor. After the engine has cooled down, the pump can be switched on again. A circuit breaker (SK 602, SK 622 or C-SK) is highly recommended for motor protection. When using WILO switching devices for automatic control, there is no need for special switches, since they are already integrated in the switching devices.
An automatic switching device S2R3D is required to control the double pump. The motor protection switch is also integrated in the changeover device.
Switching the number of revolutions:
All pumps have a 4-stage manual switch (on the terminal box). At the lowest stage, the speed is reduced by 40-70% of the maximum. Electricity consumption will be reduced by 50%.
Pumps with single-phase motors as a switch have a rotary knob on the terminal box housing (Fig. 1a, item 1).
Pumps with single-phase motors with power P 2 less than 75 W also have the option of connecting a two-stage automatic switch (S2R-h, timer).
On pumps with a three-phase current motor, the speed changeover is carried out by switching the 4-stage plug on the terminal box. In addition, it is possible to connect a 2/4-step automatic switch (fig. 1b, item 1).
Automatic control and regulation devices:
Devices for automatic control and adjustment of the pump power depending on the hydraulic needs are available in the WILO program.
4.2 Scope of delivery
Complete pump;
Installation and operating instructions.
4.3 Accessories (optional)
Connecting nuts for pumps with threaded connection;
Full motor protection disconnecting devices SK 602, SK 622, C-SK (the latter is only for 380 V);
Timer SK601, (direct connection only to single-phase pumps with power P2 less than 75 W, for all other pumps only in combination with SK 602 or SK 622);
S2R-h plug module;
Switches S2R2.5, S4R2.5, S2R3D, S4R2.5D;
Stepless control device AS 0.8mP.
5 Assembly and installation
5.1 Installation
The installation should be carried out after the completion of all welding and plumbing work and flushing the pipe system. Contamination can interfere with the operation of the pumps.
- The pumps must be installed in easily accessible places so that later it can be easily checked or replaced.
It is recommended to install shut-off valves before and after the pump. This eliminates the need to refill the system when replacing the pump. The fittings must be installed in such a way that, in the event of leaks, water does not enter the motor and the terminal box.
Installation of the pump in a system with an open expansion tank always produce after the point of connection.
Install without mechanical stress and only with a horizontal pump shaft; Observe the installation position as shown in Figure 2.
An arrow on the pump housing indicates the direction of flow.
The motor terminal box must not point downwards as water can easily enter it. Rotate the motor housing if necessary.
ATTENTION!
Do not damage gaskets.
ATTENTION!
When insulating the pipes, only the pump casing is insulated. The engine must remain open.
For pumps equipped with a plug-in module, the access of air to the module must be free.
5.2 Electrical connection
WILO pumps can be connected to 220/380 V mains and European 230/400 V.
The electrical connection must be carried out strictly according to the manual with a plug connection or an omnipolar switch with a specified minimum contact distance = 3mm.
To ensure protection against water ingress and to reduce the stress on the packing nut, a cable of sufficient diameter must be used.
When installing pumps in systems with a water temperature of more than 90 ° C, a temperature-resistant cable must be used, which must never come into contact with the piping or with the pump casing.
Recheck the type of current and voltage in the network and compare with the data in the table on the pump.
- Observe the pump type data.
- Network connection and connection of the SK 602/622 circuit breaker according to the diagrams (Fig. 3a to 3e) are performed (see also 1.22 and 4.1):
3a: 220V, non-blocking motor.
3b: 380V non-blocking motor.
3c: 220 V, with WSK (motor winding thermal protection contacts).
3d: 380V, with WSK.
3e: When installing a C-SK switch-off plug module, circuit 3d is replaced by 3e.
Carry out grounding.
If other protective devices are used, terminals 15 and 10 (WSK) must be connected to the motor control circuit (max. 250 V) together with an anti-reactivation device. The pump is then protected in all four stages.
ATTENTION!
- The thermal cut-out must be set according to the corresponding maximum current for the selected speed stage (see type table).
Observe the corresponding installation and operating instructions when connecting the circuit breakers.
6 Commissioning
6.1 System filling and bleeding
Fill the system properly. The air is removed from the system independently after a short-term activation of the pump. Short dry running does not damage the pump. If direct bleeding of the pump is required, this can be done as follows:
Switch off the pump;
Close the shut-off valves at the outlet;
Carefully loosen the venting screw (fig. 4).
- Carefully push the pump shaft back;
Protect electrical parts from liquid and vapor;
Switch on the pump;
After 15 ... 30 seconds of operation, turn off the pump and tighten the air release screw;
Open the valve again and switch on the pump.
ATTENTION!
If the screw hole is open, depending on the pressure, the pump may block.
6.2 Adjustment
- Checking the direction of rotation of three-phase motors:
Unscrew the screw on the front of the engine before checking the direction of rotation. By switching on for a short time, check whether the direction of rotation of the shaft matches the arrow on the plate. If the direction of rotation is wrong, change 2 phases.
- Switching the number of revolutions:
Single-phase motors: changeover between the 4 speed stages is done manually with a switch on the motor terminal box. Three-phase motors: changeover between 4 speed stages is done manually by switching the 4-stage plug on the motor terminal box. Loosen central bolt and set 4-stage plug with arrow to the required speed stage. Tighten the central screw again.
7 Service
The pumps are maintenance-free.
8 Malfunctions, causes and remedies
8.1 The pump does not run when the power supply is on
Check fuse.
Check the voltage at the pump (observe type data).
Check condenser size (observe type data).
The engine is blocked due to, for example, solids deposits in the system water.
Remedy: Unscrew the central plug and check the pump rotor stroke, release the pump with a screwdriver.
- If the pump stops due to a tripped motor protection, check the protection switch.
8.2 The pump is noisy
With cavitation due to insufficient pressure at the pump suction. Remedy: increase the pressure in the system within the permissible range.
Check the number of set revolutions, if necessary, set to a lower level.
If you are unable to rectify faults yourself, contact your nearest WILO customer service.
9 Spare parts
Spare parts supplied:
Pump casing, complete.
Standby engine complete.
Terminal box, complete.
Body seal.
Changeover valve, assy. (DOP / DOS only).
When ordering spare parts, state all pump type data.
Drawings:
1.Switch of the number of revolutions.
2.Installation position of the pump.
3. Connection diagrams for individual pumps.
4. Opening the venting screw.
The manufacturer reserves the right to make technical changes.
A circulation pump is an integral part of any forced circulation heating system. It is from this small device the stability of the circulation of the coolant through the pipeline depends.
Pumps from the manufacturer WILO can rightfully be considered one of the best.
In some cases, you can completely do without this element when it comes to systems with natural circulation. In this case, the coolant moves through the pipes due to the pressure difference that occurs when the water in the boiler is heated. The coolant expands when heated, part of it is simply squeezed up along the supply pipe, rising to the highest point, the water enters the radiators and, gradually cooling down, moves back to the boiler ().
The only advantage of such an organization for heating housing is absolute independence from electricity. This is important, for example, when heating a country house or summer cottage in a hard-to-reach area. In addition, the absence of moving elements in the system prolongs its service life.
But it is still better to install a circulation pump for heating Vilo before entering the boiler.
As for the advantages, the installation of such a device makes it possible to:
Of the shortcomings, it can be noted only that the small costs of electricity and noise. But the boiler is usually housed in a separate room, and the price of electricity is not that high to refuse the pump.
As for the principle of operation, all devices of this kind can be divided into 2 types:
For heating a relatively small house, options with a "wet" rotor are preferable. They got this name due to the fact that the rotor (the part that rotates) is placed directly in the pumped coolant.
Circulation pumps for heating Wilo of this type have the following features:
Note! IN small houses sometimes it is not possible to move the boiler away from the living quarters, therefore noiselessness is an important advantage.
Note! A "wet" pump must be installed so that its shaft is always horizontal.
For the operation of a powerful system, it is better to use a "dry" Wilo circulation pump for heating. Unlike the "wet" analogue, its rotor does not contact the coolant at all, and it is possible to achieve a high degree of tightness due to the pumped liquid itself.
During operation, a thin film of liquid permanently seals the microscopic gaps between rotating surfaces. Over time, the O-rings grind off a little, but the problem is solved by the fact that they are spring-loaded and simply displaced by the amount of wear, the main thing is that the grinding occurs evenly.
The main advantage of "dry" devices is the efficiency of more than 80%. And the disadvantages can be written high level noise, which is why such pumps are used mainly in powerful systems.
One of the main requirements for a modern heating system can be considered flexibility - that is, the ability to adjust its power over a wide range. Circulation pumps for heating systems from Wilo are perfect for this.
In the distant past, circulation pumps were unregulated, that is, they did not know how to reset the rotor speed. This led to the fact that the heating system worked at approximately the same power at any time, even when there was no particular need for it.
Nowadays, special attention is paid to energy saving issues, so that unregulated devices are practically not installed in new heating systems.
The use of regulated devices allows:
Note! The German manufacturer Wilo produces models for very harsh conditions. If the lime content in the water is high, then you should pay attention to the Wilo Star models.
As a rule, a circulation pump for Wilo heating can operate in several modes:
If it is not possible to invite specialists, then the installation can be done by hand.
You just need to remember a few simple installation rules:
The installation instructions for the pump are not particularly complicated, while threaded connections are used, so that, if necessary, it can be quickly removed for repair or replaced. Before installation, the boiler must be cut off with shut-off valves. Also, during installation, it is installed check valve(with the exception of open systems) and filter.
For real efficient heating impossible without forced circulation. To do this, it is necessary to install pumps, the design of which is designed specifically for such operating conditions. And often it is a circulation pump for heating Wilo: instructions, reviews, characteristics of which will help you choose the right model correctly.
Why Wilo? Firstly, this company is the founder of all modern circulation pumps. Back in 1928, she developed the first system of forced movement of liquid in pipes. It was this company that made the serial pump for hot water heating Wilo with electronic control(1988). And despite the rather tough competition, Wilo still remains the flagship in its industry.
A feature of the company's products is an integrated approach to solving specific problems - heating, air conditioning or cooling. Therefore, the characteristics of Wilo heating pumps meet the most stringent requirements, namely:
But not only these indicators are decisive for the consumer. All circulation pumps for Wilo heating systems are distinguished by their competitive price and quality.
The pump in the heating system is designed to increase the speed of movement of the coolant. But it must be remembered that exceeding this parameter can lead to a loss of heat transfer from radiators, since their surface simply will not have time to heat up.
How to choose the right pump model for autonomous system heating? First of all, you need to calculate its power. Each manual of a circulation pump for heating Wilo is characterized by the following important indicators as head (m) and flow rate (m³ / hour). An approximate calculation in this case is incorrect. To do this, take into account all the features of the system - the height of the house, the volume of the coolant, the length of the line, the thermal mode of operation, etc. The best option calculation of the pump for hot water heating Wilo - online calculator or a special program.
Only after this stage can you start choosing a particular model. Feedback on circulation pumps for heating Wilo will help to form an objective opinion about the features of its operation. But it should be borne in mind that the quality of the device largely depends on correct installation and the correspondence of its parameters to the characteristics of the system.
Some reviews of Wilo pumps say that they are ineffective in a power outage. To do this, you need to provide sources of emergency power supply - batteries or a diesel generator. Fortunately, the power consumption of the pump is minimal.
The main characteristics of Wilo pumps for heating this class are simplicity of design and affordable cost. Its design is a zigzag pipe with a circulating impeller in the middle.
Models of this class have 3 grades of rotor speed required for uniform load distribution. Each circulation pump for Wilo heating systems has the following designation:
Wilo-Star-RS N / Q
Where N- the size of the nominal inner diameter (from 15 to 30 mm), Q- head value (from 2 to 8 m).
In addition to these characteristics, you need to know the parameters of connection to the pipeline and to the mains. The device of the Wilo pump for heating Star-RS has a 4-position terminal box and an external threaded connection with sizes - ½ ”, 1” and 1½ ”. The design features are also expressed in the following:
If, after a preliminary acquaintance with the instructions for a circulation pump for Wilo heating, it became clear that this power would not be enough, you can purchase a paired Wilo-Star-RSD model.
Its maximum flow rate can be 7 m³ / hour at a design head of 5 m. In this case, the synchronization of the operation of the motors at the same shaft speed must be taken into account. Otherwise, not only the efficiency of the device will be reduced, but also the likelihood of its breakdown will arise. In some negative reviews about circulation pumps for heating Wilo, no mention is made of the incorrect operation of a particular model. Therefore, their subjectivity should be taken into account.
The average cost of Star-RS depends on its parameters and can range from 2,200 to 4,500 rubles.
The price of a paired model ranges from 6300 to 6800 rubles.
The pump must be installed before the inlet of the return pipe in the boiler, but before the expansion vessel.
To create automatic control of the parameters of hot water heating, it is recommended to purchase Wilo pumps of the Stratos series. Their mechanical part is completely identical to the Star-RS. The difference lies in the electronic control unit.
An LCD display is provided to visualize the current characteristics of Wilo pumps for a specific heating mode. It displays the impeller speed. The switching part of the device includes the most common modules - CAN, LON, Modbus, etc. With their help, the Wilo pump device is switched with heating elements - a boiler and a programmer.
It is noteworthy that the number of models in the Wilo-Stratos series is significantly larger than that of the Star-RS. They have the following ranges of basic characteristics:
The connection can be carried out using both flange assemblies and threaded connections. The size of the latter varies from 1 '' to DIN-100.
Such a variety of models of Wilo circulation pumps for heating explains the large range of their cost - from 11,700 to 67,000 rubles.
During installation, you must carefully read the instructions for the specific circulation pump for heating Wilo. It will necessarily indicate that regardless of the selected position, the shaft must be strictly horizontal. This is a prerequisite for normal operation.
Can the pump be repaired by myself in the event of a breakdown? The video material shows an example of restoring its performance:
Heating systems that use the natural circulation of the coolant are slowly becoming a thing of the past. Affected by their low performance, narrow focus and lack of high pressure in the system, which is important for houses with a large area.
Gradually, natural circulation in heating systems is replaced by forced circulation, where one of the main units is a circulation pump.
Currently, the domestic market is extremely rich in all kinds of circulation pumps for installation in the heating system.
It should be noted that among them there are both really high-quality, well-designed models, and outright Chinese fakes that are not able to work for more than one season.
Naturally, if the heating system is chosen, as they say, "for centuries", then all the units installed in it must be of high quality, reliable and efficient.
Circulation pumps for heating systems Wilo, which are produced by a renowned German concern, are in great demand among domestic consumers.
As you know, the Vilo heating circulation pump is the "heart" of the system. modern heating and the manufacturing company understands this.
With over 100 years of experience, unique equipment and careful selection of materials, Wilo pumps are distinguished by their performance, power and reliability. Models are presented for both civil and industrial buildings.
Tip: Vilo pumps are presented in a large assortment, and therefore, before buying a particular model, it will not be superfluous to consult with specialists. Only professionals will give specific advice and help you choose the best unit for each specific case.
IN modern systems heating circulating pumps for heating Wilo perform an extremely important task - they provide fast movement of the coolant in the network. As a result (and the instruction for the Vilo pumps speaks about this), the heat transfer improves almost several times, the efficiency of the system increases.
Also, if there is a Wilo circulation pump for heating in the circuit, you can significantly save on pipes, because the lines (due to forced pressure generation) have a significantly smaller diameter than if natural circulation was used.
As for the equipment itself, Vilo pumps are practically silent, reliable and practical, have compact dimensions and do not require any special maintenance.
Any circulation pump from the Wilo SE company is a modern and efficient unit, it works for a long time and trouble-free. It should be noted that installing it with your own hands does not turn into some kind of complex and time-consuming operation. And the price for such equipment is much lower than for analogs on the domestic market.
The domestic market offers a huge selection of modern, reliable and high-quality pumps from this German company. In many photos and videos posted on the Internet, you can easily see the main assortment of equipment that the Wilo group really produces in abundance.
Among the most popular models of Vilo circulation pumps are:
Circulation pump
Circulation pump Wilo TOP-Z
Modern circulation pumps for heating systems Wilo are an excellent choice for any real estate object, be it a small country cottage or an industrial enterprise.
The use of Vilo pumps for systems with forced circulation of the coolant allows you to get a lot of advantages:
As can be seen from the above material, such pumps for heating systems (although they can also be installed in hot water pipelines) can increase the efficiency and productivity of work, reduce costs, and also eliminate breakdowns.
Pumps from the eminent German brand are surprisingly well integrated into existing and functioning heating systems (due to their low weight and dimensions). They provide a fast flow of the coolant and its circulation through all radiators.
Nevertheless, their choice must be approached with all responsibility, taking into account the area of the heated rooms, as well as the friction losses in the pipes.
The choice of WILO circulation pumps is a great opportunity to become an owner effective system heating. Such equipment fully meets all quality standards, are made only from best materials and on innovative technologies.
- see here.
