Public Tender Vob/A Air Conditioning Systems (Din 18 379); One Of The Two Existing Heat Pumps With Heating/Cooling Functions Will Be Replaced And Reconnected To The Existing Network. The New Heat Pump Will Be Powered By Nh...  Moreair Conditioning Systems (Din 18 379);One Of The Two Existing Heat Pumps With Heating/Cooling Functions Will Be Replaced And Reconnected To The Existing Network. The New Heat Pump Is Operated With Nh3. This Is Encapsulated And Led Out Of The Building With A Suction System Through The Building Technology Introduction Shaft 1 (U3.B.02).