Projects of CEN/TC 109/WG 1

DIN EN 00109056 2019-10-15 Gas-fired central heating boilers - Part 2-Y: Specific standard for hybrid space heating appliances combining a gas fired appliances and heat pump in a product More  Comment 
DIN EN 15502-1 2018-11-19 Gas-fired heating boilers - Part 1: General requirements and Tests; German version EN 15502-1:2020 More  Comment 

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