scope:

This European Standard specifies the test requirements for laboratory testing, the terminology, the general requirements for the construction and operation of automatic forced draught oil burners supplied with: - a fuel having a viscosity at the burner inlet of 1,6 mm²/s (cSt) up to 6 mm²/s (cSt) at 20 °C, and - higher boiling petroleum based first raffinates. To achieve the viscosity required for proper atomisation preheating is necessary. The standard is applicable to: - single burners with a single combustion chamber, although such burners are fitted to a single appliance, in which case the requirements of the relevant appliance standard shall additionally apply; - single-fuel and dual-fuel burners when operating on oil only; - the oil function of dual-fuel burners designed to operate independently on gaseous or liquid fuels. In which case the requirements of EN 676 will also apply in respect of the gaseous fuel function.