In order to improve the comfort of the living environment, the need to install underfloor heating in homes is becoming more and more important. The increasing maturity of underfloor heating technology has led to higher and higher requirements for control technology. What are the requirements of HVAC companies when designing control systems?
What is the main control system for underfloor heating systems?
The most common underfloor heating control system is a combination of a manifold and a thermostat. The main function of the manifold is to transport the hot water produced by the heat source to the underfloor heating coils in each room, thus raising the temperature of the room. The main function of the thermostat is to sense the room temperature and control the flow of the heating water supply. When the thermostat detects that the room temperature has reached the set temperature, it will close the circuit of the manifold and the heating circulating water will stop supplying and the room temperature will slowly decrease; when the thermostat detects that the room temperature is lower than the set temperature, it will reopen the circuit of the manifold and the heating circulating water will continue to be transmitted When the thermostat detects that the room temperature is lower than the set temperature, it will reopen the circuit of the manifold and the heating circulating water will continue to be transferred to the floor heating coil.
Selecting the quality of your water distribution equipment
Divers are available in brass and stainless steel, but also in nickel-plated copper, nickel-plated alloy or engineering plastics, which are less commonly used in domestic installations.
Different types of manifold have their own advantages, but brass and stainless steel are the main materials used for domestic use. Brass has a better texture and durability, and brass has a forging and casting process, forging the brass manifold in all aspects of the advantages more prominent. Stainless steel manifolds are mainly used for high flow rates and have a low thermal conductivity, resulting in low heat loss during transmission.
The manifold is usually installed above and the collector below. The distance between the centre of the manifold and the collector is 20 cm and the collector is 30 cm from the ground to facilitate the connection of the floor heating coils. The installation of the manifold should consider the maintenance space and maintenance space, usually installed in the bathroom, kitchen, living balcony and other places with water sources and floor drains, not only convenient for maintenance, but also convenient to change water maintenance, and embedded in the wall also does not affect the beauty of the interior and affect the placement of furniture.
The role of the thermostat is to sense the room temperature and control the heat source, thus improving the energy efficiency and comfort of the floor heating. For users, it is more desirable to have a thermostat with higher accuracy and sensitivity, after all, a thermostat with higher sensitivity is more accurate in controlling the room temperature and the smaller the fluctuation in room temperature, the better the user experience will be. The general accuracy of the thermostat for temperature control is between ±0.5°C and 1°C, and due to the different installation locations, there will be an impact on the accuracy of temperature control. Do not put too much emphasis on functionality in the selection of thermostats, some fancy features are not useful and add to the complexity of the operation, expensive and impractical.
Floor heating system to do a good job of energy efficiency, it is inevitable to start with the control system. Common control systems are mainly achieved through manifolds and thermostats to achieve a more comfortable indoor heating effect as well as the best energy efficiency. For energy saving control of underfloor heating systems, the efficiency of the heat source and the flow rate of the heating water can also be controlled to achieve higher energy efficiency.