Heating boilers - Part 1: Heating boilers with forced draught burners - Terminology, general requirements, testing and marking (EN 303-1:1999 + A1:2003)
Heating boilers - Part 5: Heating boilers for solid fuels, manually and automatically stoked, nominal heat output of up to 500 kW - Terminology, requirements, testing and marking
Heating boilers - Part 5: Heating boilers for solid fuels, manually and automatically stoked, nominal heat output of up to 500 kW - Terminology, requirements, testing and marking