CEN/TS 12977-1 : Thermal solar systems and components - Custom built systems - Part 1: General requirements for solar water heaters and combisystems.
Norm CEN-TS-12977-1-EN
Norm CEN-TS-12977-1-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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