Tenders Are Invited For Modernization Of The Building Of The Secondary School No. 70 At Ul. Dembowskiego 1 In Warsaw - Construction Of A Mechanical Ventilation Installation.

The Subject Of The Order Is The Modernization Of The Building Of The Secondary School No. 70 At Ul. Dembowskiego 1 In Warsaw, Including The Construction Of A Mechanical Ventilation Installation In Accordance With The Design Documentation. The Purpose Of The Ventilation Installation Is To Ensure The Required Number Of Air Changes In Rooms In Accordance With Applicable Standards In Order To Maintain Appropriate Hygienic And Health Conditions And The Comfort Of Users. Scope Of The Subject Of The Order1) Dismantling And Preparatory Works: A) Dismantling Existing Ventilation Ducts, B) Dismantling Roof Ventilators, C) Making The Necessary Punctures In Building Partitions And To Existing Ventilation Chimneys, D) Plugging Existing Holes In Roof Slope After Dismantled Installation Elements, E) Relocation Of Existing Air Conditioning Units Colliding With The Designed Installation, F) Removal And Disposal Of The Resulting Construction Waste.2) Construction Of New Mechanical Ventilation Installations, Including 7 Supply And Exhaust Systems (Nw1 - Nw7): A) Delivery And Installation Of Nw1 - Nw7 Ventilation Units Along With Supporting Structures, B) Installation Of Sheet Metal Ventilation Ducts Galvanized Steel (Rectangular And Round Spiro Type) With Fittings, C) Thermal Insulation Of Ventilation Ducts With Mineral Wool Mats On Aluminum Foil And Protective Jackets Made Of Galvanized Sheet Metal, D) Installation Of Ventilation System Elements, Including: Ventilation Grilles, Diffusers, Supply And Exhaust Valves, Long-Range Nozzles, Regulating Dampers, Flexible Ducts And Amortization Stubs, E) Installation Of Air Intakes And Exhaust Outlets (Roof And Wall) Along With The Implementation Of Thermal Insulation.3) Construction Of A Refrigeration Installation Cooperating With Ventilation Units: A) Delivery And Installation Of Refrigeration Units With Equipment And Controllers, B) Installation Of Bases For Air-Conditioning Units, C) Construction Of A Freon Installation From Copper Pipes With Fittings And Insulation, D) Purging Of The Installation With Nitrogen, Tightness Tests And Filling The Installation With Refrigerant.4) Execution Of Electrical Installations: A) Installation Of Electrical Equipment And A Switchgear Supplying Power To The Ventilation Installation, B) Construction Of Internal Power Lines For Ventilation Units And Refrigeration Units, C) Laying Of Low-Voltage Power Cables And Their Fastening, D) Execution Of Cable Terminations And Connection Of Ventilation And Air-Conditioning Installation Devices, E) Construction Of Cable Routes In Cable Tray Systems Along With Supporting Structures, F) Execution Installation Passages Through Building Partitions And Reconstruction Of Installation Grooves,G) Cabling Of Ventilation Units And Control Automation Installations.5) Lightning Protection Installation:A) Installation Of Horizontal Air Terminals On The Roof Of The Building With Fastening Elements,B) Installation Of Lightning Protection Spikes With Installation