Heating device operating method involves using multi-stage switch with separate association of each stage to control device input; inputs are combined with winter/summer function

摘要

The method involves using a switch (12) of two or more stages for a changeover valve (2) between hot water and heating circuits, whereby the switch has a separate association of each switching stage (13,13') to an input in a control device (14) and the inputs (W,S) are combined with a function for winter and summer operation.