DIN EN 12098-1:2013-10

Equipment which controls the heating supply in buildings according to outside temperature and time is necessary to reduce the energy consumption of heating plants. This equipment can bring about improved comfort and energy savings. For this purpose, an outside temperature compensated controller (OTC) is necessary. This standard describes the main equipment characteristics and functions of control systems for reaching energy saving and comfort objectives. This standard applies to electronic control equipment for heating systems with water as the heating medium and a flow water temperature up to 120 °C. This control equipment controls and regulates the distribution and/or the generation of heat in relation to the outside temperature and time and other reference variables. The committee responsible for the German version is Working Committee NA 041-03-61 AA "Gebäudeautomation Produkte (SpA CEN/TC 247/WG 6)" ("Building automation products (Mirror committee CEN/TC 247/WG 6)") of the Heating and Ventilation Technology Standards Committee (NHRS) at DIN, the German Institute for Standardization e. V. This standard covers also controllers which contain an integrated optimum start or an optimum start-stop control function. Safety requirements on heating systems remain unaffected by this standard. The dynamic behaviour of the valves and actuators are not covered in this standard. A multi-distribution and/or multi-generation system needs a coordinated solution to prevent undesired interaction and is not part of this standard.