A 10 inch touch panel with control logic and graphic user interface was developed for Vitomax industrial boilers. The information for each defined user group (boilermen, observers and engineers) was arranged logically, reduced as appropriate and with a clear graphic visualisation. To a large extent, the operation requires no reference manual. Observers can get an overview of the most important functions following simple symbols. At first sight, users will recognise whether a value is in the green, yellow or red range.