This European Standard specifies requirements for the construction and function, test methods and marking os automatic burner control systems and also programming units and their associated flame detector devices for gas burners and gas burning appliances with or without fans. This standard also applies to automatic burner control systems, programming units and their associated flame detector devices that include additional functions. Automatic burner control systems utilizing thermo-electric flame supervision devices are not covered by this standard. NOTE. European Standards for burners, appliances or processes which use automatic burner control systems, programming units or flame detectors may override the requirement of this standard.