Reglering av vattenburen golvvärme
Regulation is the heart and brain of an underfloor heating system. It allows you to regulate the room temperature by controlling the flow and temperature of the water in the coils. To ensure that the system can provide comfortable heat, regulation needs to be adjusted by ensuring accurate dimensioning. The combination of the right products and accurate dimensioning is a prerequisite for a well-functioning underfloor heating system. Regulation involves a number of components which are combined in a manner that meets your needs and requirements. The key components are described below. In many cases, the heat source is regulated by a sensor to control the water temperature, based on the outdoor temperature. This is necessary to ensure that the heating system is working efficiently.
Pump/Mixing Unit group
If the underfloor heating is connected to an existing water-based heating system, such as radiators, a pump/shunt group must be installed. The job of the pump/shunt group is both to pump the water round the coils and to enable the water in the coils to be mixed with the water from the heat source. In this way, you can always have the right water temperature in each coil. If there was no pump/shunt group, the water temperature would be far too high. The size and design of the pump/shunt group is determined by the total installed area.
Every coil has an inlet and outlet through which the water passes. They are connected to a manifold which, in turn, is connected to the pump/shunt group or directly to the heat source. In principle, a manifold can have as many outlets and inlets as you want. In practice, however, it may be more convenient for larger surfaces to use more manifolds, as the transport route for certain coils can be long. Each pipe can be fitted with a separate thermostat and actuator, which control the flow in the coil. It is also possible to connect several coils to the same thermostat. However, it is not possible to connect more than one thermostat to a coil.
A sensor located in the room thermostat detects the temperature in the room. The room thermostat communicates with a connection box which, in turn, communicates with one or more actuators. The actuator is located on the manifold and controls the flow in the coil. There are two different ways to transmit information about the room’s temperature: wired and wireless.
Information about the room’s temperature is transmitted via radio waves. The room thermostat communicates with a connection box which, in turn, communicates with one or more actuators. The actuator is located on the manifold and controls the flow in the coil.
Information about the room’s temperature is transmitted via a cable from the sensor in the room to the shunt. The length of the cable does not affect performance at all. A wired transfer allows you to place the sensor far away from the manifold/actuator.
Dimensioning is a calculation which determines the flow and water temperature in different coils. This is based on the conditions that apply to each house. Examples of important factors that affect dimensioning are the house’s geographical location in the country (the position determines the house’s outdoor air temperature) and the house’s insulation. Another important parameter is the surface material which is laid on the underfloor heating system. Tiles, parquet flooring, laminate or plastic flooring (a more insulated surface material requires a higher temperature in the coil). The more accurate the dimensioning, the more efficiently the underfloor heating will work.