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prEN 1918-5
Gas infrastructure - Underground gas storage - Part 5: Functional recommendations for surface facilities
prEN 378-1
Refrigerating systems and heat pumps - Safety and environmental requirements - Part 1: Basic requirements, definitions, classification and selection criteria
DIN EN 17625
Rooftop units - Testing and rating at standard rating conditions and part load conditions for calculation of seasonal performance; German version FprEN 17625:2025
