EN 13611:2019, 1 is replaced by the following: This document specifies the safety, construction and performance requirements for automatic burner control systems, programming units, flame detector devices and HTO detectors, intended for use with gas and oil burners and gas and oil burning appliances, with or without fans and similar use. This document is applicable to automatic burner control systems that include additional functions. This document does not cover automatic burner control systems utilizing thermo-electric flame supervision devices. NOTE 1 European Standards for burners, appliances or processes which use automatic burner control systems, programming units, flame detectors or HTO detectors can override the requirements of this standard. NOTE 2 Provisions for production control are not part of this document.