Gas-fired domestic appliances producing hot water - Part 2: Assessment of energy consumption; German version EN 13203-2:2022
Edition 2022-10

Thermal solar systems and components - Factory made systems - Part 2: Test methods; German version EN 12976-2:2019
Edition 2019-11

Heating boilers - Part 6: Heating boilers with forced draught burners - Specific requirements for the domestic hot water operation and energy performance of water heaters and combination boilers with atomizing oil burners of nominal heat input not exceeding 70 kW; German and English version EN 303-6:2019/prA1:2022
Edition 2023-01

Gas-fired domestic appliances producing hot water - Part 4: Assessment of energy consumption of gas combined heat and power appliances (mCHP) producing hot water and electricity; German version EN 13203-4:2022
Edition 2022-10

Gas-fired domestic appliances producing hot water - Part 6: Assessment of energy consumption of adsorption and absorption heat pumps; German version EN 13203-6:2022
Edition 2022-11

Heating boilers - Part 6: Heating boilers with forced draught burners - Specific requirements for the domestic hot water operation and energy performance of water heaters and combination boilers with atomizing oil burners of nominal heat input not exceeding 70 kW; German version EN 303-6:2019
Edition 2019-12

Energy performance of buildings - Method for calculation of system energy requirements and system efficiencies - Part 4-3: Heat generation systems, thermal solar and photovoltaic systems, Module M3-8-3, M8-8-3, M11-8-3; German version EN 15316-4-3:2017
Edition 2017-09

Gas-fired domestic appliances producing hot water - Part 5: Assessment of energy consumption of gas-fired appliances combined with electrical heat pump; German version EN 13203-5:2022
Edition 2025-07

Gas-fired storage water heaters for the production of domestic hot water; German version EN 89:2015
Edition 2015-08

Integrated Services Digital Network (ISDN); user-network interface data link layer specification; application of CCITT recommendations Q.920/I.440 and Q.921/I.441; english version ETS 300125:1991
Edition 1992-05