NF E35-404-1:1994 REFRIGERATING SYSTEMS AND HEAT PUMPS. SAFETY AND ENVIRONMENTAL REQUIREMENTS. PART 1 : BASIC REQUIREMENTS. (EUROPEAN STANDARD EN 378-1).
2000NF E35-404-1:2000 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 1 : basic requirements, definitions, classification and selection criteria.
1994NF E35-404-1:1994 REFRIGERATING SYSTEMS AND HEAT PUMPS. SAFETY AND ENVIRONMENTAL REQUIREMENTS. PART 1 : BASIC REQUIREMENTS. (EUROPEAN STANDARD EN 378-1).