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Hydrogen Technologies Standards form the basic framework for market ramp-up
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Climate change Standards and specifications support climate targets
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Projects of CEN/TC 109/WG 1

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Document number	Begin	Title	Comment
DIN EN 15502-2-3 rev	2026-03-23	Gas-fired central heating boilers - Part 2-3: Specific standard for hybrid units combining a gas-fired boiler and an electrical heat pump in a product More	Comment
DIN CEN/TS 15502-3-2	2026-01-27	Gas-fired central heating boilers - Part 3-2: H2NG-Y20 appliances with pneumatic gas supply (PGS) - Expansion of EN 15502-2-2: 2025 More	Comment
DIN CEN/TS 15502-3-3	2023-06-30	Gas-fired central heating boilers - Part 3-3: 100 % Hydrogen - Expansion of EN 15502-2-1:2022; German version CEN/TS 15502-3-3:2026 More	Comment

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