Truly efficient heating is 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.
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 movement of liquid in pipes. It was this company that made the serial Wilo water heating pump 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:
- A wide range of performance characteristics - maximum pressure (up to 16 bar) and temperature (from -10 ° С to + 110 ° С) of the coolant;
- The centrifugal wheel provides radial movement of water, which significantly reduces the hydraulic resistance;
- A special feature of the Wilo heating pump is the "wet" stator. This engineering solution excludes the use of air cooling for the engine in the design (this is done by the water itself through the stator). The bearing is lubricated in the same way;
- The choice of control system is three-stage, with an extended switching interface or with automatic power control.
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.
Wilo products
How to choose the right pump model for an autonomous heating system? First of all, you need to calculate its power. Each manual of a circulation pump for Wilo heating is characterized by such important indicators as head (m) and flow (m³ / h). 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 for calculating a pump for Wilo hot water heating is an 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's operation largely depends on the correct installation and the compliance of its parameters with 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.
Circulation pumps Wilo-Star-RS
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 dimensions - ½ ”, 1” and 1½ ”. The 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 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 with a design head of 5 m. In this case, one must take into account the synchronization of the motors at the same shaft speed. 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.
Circulation pumps Wilo-Stratos
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:
- Maximum flow rate - from 5 to 62 m³ / hour;
- Head value - from 4 to 17 m;
- The nominal pressure is from 10 to 16 bar.
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:
