Heating boilers - Part 4: Heating boilers with forced draught burners; special requirements for boilers with forced draught oil burners with outputs up to 70 kW and a maximum operating pressure of 3 bar; terminology, special requirements, testing and marking; German version EN 303-4:1999
Edition 1999-03

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; German version EN 303-5:2021+A1:2022
Edition 2023-07

Heat exchangers - Definitions of performance of heat exchangers and the general test procedure for establishing performance of all heat exchangers; German version EN 305:1997
Edition 1997-07

Heat exchangers - Methods of measuring the parameters necessary for establishing the performance; German version EN 306:1997
Edition 1997-07

Heat exchangers - Guidelines to prepare installation, operating and maintenance instructions required to maintain the performance of each type of heat exchanger; German version EN 307:1998
Edition 1998-12

Heat exchangers - Test procedures for establishing performance of air to air heat recovery components; German version EN 308:2022
Edition 2023-06

Particleboards - Definition and classification; German version EN 309:2005
Edition 2005-04

Wood-based panels; determination of modulus of elasticity in bending and of bending strength; German version EN 310:1993
Edition 1993-08

Wood-based panels - Surface soundness - Test method; German version EN 311:2002
Edition 2002-08

Particleboards - Specifications; German version EN 312:2010
Edition 2010-12