EN 15502-2-1 : 2012+A1:2016 : Gas-fired central heating boilers - Part 2-1: Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 1 000 kW.
Norm EN-15502-2-1-EN
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Norm NBN-EN-ISO-16032-EN
NBN EN ISO 16032 : Acoustics - Measurement of sound pressure level from service equipment in buildings - Engineering method (ISO 16032:2004).
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