NA 044

DIN Standards Committee Refrigeration Technology

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Drafts of NA 044

Number: 22

DIN EN ISO 24664 2021-04 Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation (ISO/DIS 24664:2021); German and English version prEN ISO 24664:2021 More 
DIN EN 17625 2021-01 Roof-top units; German and English version prEN 17625:2020 More 

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