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Air handling installations Basis for performance is VOB/C, ATV DIN 18299 "General regulations for construction work of any kind", ATV DIN 18379 "Air handling installations", ATV DIN 18421 "Insulation work on technical installations" and ATV DIN 18386 "Building automation", as well as DIN 4102 Fire performance of building materials and components, DIN 4109 Sound insulation in building construction, and the generally accepted rules of technology. 1 supply and extract air ventilation unit (12,000 m³/h) with heat recovery 700 m² rectangular duct, galvanized 130 m round duct up to DN 200, galvanized 370 m² rectangular duct with black paint 400 m round duct up to DN 200 with black paint 19 fire protection dampers, round and rectangular 30 variable volume flow controllers 71 constant volume flow controllers 48 rectangular sound attenuators 48 round sound attenuators 168 air inlets and outlets

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