Truly efficient heating is not possible without forced circulation. For 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, specifications about which will help to choose the right model.
About Wilo
Why Wilo? Firstly, this company is the founder of all modern circulation pumps. Back in 1928, she developed the first system of forced fluid movement in pipes. It was this company that made the Wilo series electronic water heating pump for heating (1988). And despite the rather fierce competition, Wilo still remains the leader 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:
- A wide range of operational characteristics - maximum pressure (up to 16 bar) and temperature (from -10 ° C to + 110 ° C) of the coolant;
- The centrifugal wheel provides a radial movement of water, which significantly reduces the hydraulic resistance;
- A feature of the Wilo pump device for heating is a “wet” stator. Such an engineering solution excludes the use of an engine in the air cooling structure (this is done by the water itself through the stator). Lubrication of the bearing occurs in the same way;
- The choice of control system is three-stage, with an expanded switching interface or with automatic power control.
But not only these indicators are decisive for the consumer. All Wilo heating circulators are competitively priced and quality.
The pump in the heating system is designed to increase the speed of the coolant. But you need to remember that exceeding this parameter can lead to loss of heat transfer of radiators, since their surface simply will not have time to heat up.
Wilo Products
How to choose the optimal pump model for an autonomous heating system? First of all, you need to calculate its power. Each Wilo heating circulation pump instruction is characterized by such important indicators as head (m) and flow rate (m³ / h). The approximate calculation in this case is incorrect. For this, all the features of the system should be taken into account - the height of the house, the volume of coolant, the length of the main, the thermal operating mode, etc. The best option for calculating the Wilo water heating pump is an online calculator or a special program.
Only after this stage can you start choosing a specific model. Reviews about circulation pumps for heating Wilo will help to create an objective opinion about the features of its operation. But you need to consider that the quality of the device depends largely on the correct installation and the compliance of its parameters with the characteristics of the system.
Some reviews of Wilo pumps say they are ineffective in power outages. To do this, provide emergency power sources - batteries or a diesel generator. Fortunately - the consumption of electricity pump is minimal.
Wilo-Star-RS circulation pulsers
The main characteristics of Wilo pumps for heating of this class are simplicity of design and affordable cost. Its design is a zigzag pipe, in the middle of which there is a circulating impeller.
Models of this class have 3 gradations of rotor speed necessary for uniform load distribution. Each circulation pump for Wilo heating systems has the following designation:
Wilo-Star-RS N / Q
Where N - size of the nominal inner diameter (from 15 to 30 mm),Q - pressure value (from 2 to 8 m).
In addition to these characteristics, you need to know the connection parameters in the pipeline and to the mains. The Wilo pump heating device Star-RS has a 4-position terminal box and external threaded connections with sizes of ½ ”, 1” and 1½ ”. Design features are also expressed in the following:
- Possibility of installation in any position with a horizontal shaft;
- Protection class IP44;
- Electric network - 220V.
If, after a preliminary review of the instructions for the circulation pump for heating Wilo, it became clear that this power will not be enough, you can purchase a paired model Wilo-Star-RSD.
Its maximum flow rate can be 7 m³ / h with a design head of 5 m. In this case, the synchronous operation of the engines at one shaft speed must be taken into account. Otherwise, not only the efficiency of the device’s functioning will be reduced, but also the probability of its breakdown. Some negative reviews about Wilo heating circulating pumps do not mention improper use 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 2200 to 4500 rubles.
The price of a paired model ranges from 6300 to 6800 rubles.
The pump must be installed in front of the inlet of the return pipe in the boiler, but in front of the expansion tank.
Wilo-Stratos circulation pulsers
To create automatic control of water heating parameters, it is recommended to purchase Wilo Stratos pumps. Their mechanical part is completely identical to Star-RS. The difference lies in the electronic control unit.
For visualization of the current characteristics of Wilo pumps for a specific heating mode, an LCD display is provided. It displays the rotational speed of the impeller. 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 much larger than that of the Star-RS. They have the following ranges of basic characteristics:
- The maximum expense - from 5 to 62 m ³ / hour;
- Pressure value - from 4 to 17 m;
- Nominal pressure - from 10 to 16 bar.
The connection can be carried out both with the help of flange assemblies, and on 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 a large range of their cost - from 11,700 to 67,000 rubles.
During installation, carefully read the instructions for the specific Wilo heating circulation pump. It will necessarily be indicated that, regardless of the selected position, the shaft must be strictly horizontal. This is a prerequisite for normal use.
Is it possible to repair the pump in case of failure? The video shows an example of the restoration of its performance:
