The heating system will not work correctly without the appropriate settings, which can be implemented in one way or another. This is required so that the network parameters in each individual section are as close as possible to the calculated ones. If you make the correct settings, you will be able to get high system efficiency. To date, there are several ways that help to make the adjustment, however, the most modern are the balancing valves for the heating system.
Appointment
As mentioned above, any heating system requires a hydraulic adjustment, which is also called balancing. The goal of such an operation is to bring the water flow to the calculated value in each branch of the circuit. This will deliver a certain amount of heat to the batteries.
If you are interested in balancing valves for the heating system, it is important to consider that before setting up, you should learn more about the estimated flow rate of the coolant for each individual section. If we are talking about the simplest system, then the flow rate is provided by correctly selected pipes, which must have a certain diameter. If a more complex system is equipped in the house, then its work is adjusted using special washers. They have such a passage size that will ensure the flow of water in the right amount.
The above methods are considered obsolete. Today, modern methods are used - balancing valves for the heating system. Structurally, such devices are represented by manual valves, by means of which volumetric regulation of water intake is made. In addition to the flow shut-off mechanism, fittings in the amount of 2 pieces are built into the housing. They are necessary to connect the capillary tube, as well as the interaction of this element with other control nodes. The fittings are also required for measuring the pressure before and after the adjustment mechanism.
What else do you need to know about the appointment?
Determining the pressure in each fitting, the differential pressure on the regulator is measured. After proceeding from the obtained data, you can find out what the water consumption is at the site. The valve is supplied with instructions where you can find a graph with which to determine the number of revolutions of the handle for the required flow rate.
For reference
On sale you can find balancing valves for heating systems of certain brands. They can be used in tandem with devices of the same brand, which allows you to obtain data on a specific volume of flowing water. This simplifies the process, and the user does not have to do additional calculations. However, such equipment will have to be invested additionally.
Variety of valves for the intended purpose
Considering the described devices, according to their purpose they can be divided into automatic regulators and manual valves. In the first case, two devices are supplied, namely a balancing valve, as well as a regulator responsible for the pressure drop. These nodes communicate with each other using a capillary tube.
Valve mounting location
If you are thinking about how to set up a heating system with balancing valves, then you need to follow the recommendations presented by the manufacturers. You will find tips in the instructions and user manual. Before starting installation work, it is necessary to familiarize yourself with where the installation will be carried out. In order to guarantee maximum measurement accuracy before and after the device, the pipe sections should be as even as possible, they must be eliminated from bending. Their length will depend on the diameter of the material used.
Before the valve is located, the length of the straight pipe should be equal to 5 pipe diameters, after the device, the length of the pipeline will be 2 diameters, but not less. Before installing balancing valves for the heating system, it is important to choose the right place. If we neglect the above rule, the measurement error can range from 15 to 20%.
Valve location
If the device is located after the circulation pump, then the step of the straight section from the equipment to the valve should be 10 diameters of the pipeline used. The valve should be located in a place where it will be convenient to dismantle, configure and operate it. The first of the described manipulations may be needed in case of equipment breakdown. The coolant should rush in the direction where the arrow is located on the device.
The balancing valve for the Danfoss heating system can be located either vertically or horizontally, however, in doing so, follow the instructions in the instructions. During installation, it is important to exclude contact of the device body with foreign objects. The device must not be subjected to pressure, compression, stretching or torsion. The impact should not only be permanent, but also temporary.
The purpose of the balancing valve in the heating system has been described above. From it follows the principle of operation of the device, which provides for the passage through the device of a large amount of water. In order to eliminate clogging and failure of the valve, a strainer must be installed in front of it . Otherwise, the device will need to be replaced within a short time.
Purpose of Danfoss balancing valves
Automatic valves of the ASV series are used to maintain a certain pressure between the return and supply pipelines of regulated systems. Devices are used in heat and cold supply with changing flow rates of water passing through them in the range up to 100%. Regulation is carried out by a valve mounted on the return pipe. Balancing valves for the Danfoss heating system of the ASV-P series have a fixed setting of 10 kPa. On sale you can find ASV-PV valves with adjustable settings from 5-25 kPa.
If we are talking about the ASV-PV Plus series, then they are characterized by a limit of 20 to 40 kPa. An impulse of more impressive pressure can be taken through an impulse tube from another valve, which acts as a so-called partner. It is installed on the supply pipe. These are valves of the ASV-M or ASV-I series, with their help it is possible to limit the flow rate of transported water.
Purpose of the Danfoss manual valve
Manual valves of this manufacturer are devices that have a valve design with fixation of the tuning position for a certain capacity. As a rule, they are used to set up a pipeline network, and are installed instead of throttling diaphragms, which are called washers, where there are no regulating automatic devices, or regulators do not allow to limit the estimated water flow.
Conclusion
You can also find Danfoss combined AB-QM valves on sale, which are responsible for stabilizing the flow. The main areas of use are: stabilization and flow restriction in systems with constant hydraulic parameters, as for single pipe risers or cold water systems.