The installer contains set of icons with symbols of heating, ventilation, and air condition. The icons are based on the CEN/TS 15810:2008 standard, taking into account current graphic trends as well as best practice in the trade. The symbols are designed to be cleanly styled, easy to recognize and legible in the long term also on large screens. The license agreement allows usage in all Merbon programs, namely in Merbon SCADA, Merbon Visual, and web servers in the PLCs. The symbol set will be enhanced by more icons in next releases.