Tenders Are Invited For Ventilation Installation Work – Installation Of Window And Wall Ventilators To Window Frames

Ventilation Installation Work – Installation Of Window And Wall Ventilators To Window Frames. The Scope Of Work Includes The Delivery And Installation Of Window Vents For Window Frames And Wall Vents In Premises Owned By The Siemianowice Śląskie Commune. The Order Will Be Processed Up To The Amount That The Ordering Party Intends To Allocate To Finance The Order. The Expected Number Of Air Vents Is 50 Pieces And May Be Increased Or Decreased. Installation Of Pressurized Window Vents In Which The Amount Of Air Supplied Depends On The Pressure Outside And Inside The Room, The Air Vent Efficiency Is To Reach A Value Of (25 M3/H At A Pressure Difference Of 10Pa For A Pvc Window). With Further Growth, The Design Of The Hood Is Intended To Limit The Amount Of Air Supplied. The User Must Be Able To Close The Shutter, Limiting The Air Flow To A Minimum (7M3/H At A Pressure Difference Of 10Pa For A Pvc Window). The Diffuser Must Be Equipped With A Slider Enabling Smooth Regulation Of The Amount Of Air Supplied By Changing The Damper Opening Degree. The Device Must Remain Tight Against The Penetration Of Rainwater In The Closed Position At A Pressure Difference Of 300Pa For A Pvc Window. Diffusers Should Have Itb Technical Approval Confirming The Previously Mentioned Parameters. For Their Correct Operation And In Accordance With Pn83/B03430 As Amended Az3 From 2000, They Should Be Installed In The Upper Part Of The Windows. Installation Of Pressure Wall Vents Which Are To Enable The Supply Of Air In The Amount Of 30M3/H At A Pressure Difference Of 10Pa. The Air Vents Must Be Able To Be Closed Manually (Flow Limited To 6 M3/H At A Pressure Difference Of 10 Pa). Due To The Installation Height, The Inflow Of External Air From The Diffuser Into The Room Should Be Sideways. The Device Should Be Equipped With Elements That Limit The Amount Of Air Supplied To The Rooms In The Event Of A Sudden Increase In Pressure Difference. The Air Vent Should Also Be Equipped With Elements That Protect The Opening In The Partition Against Insects. The Wall Diffuser Should Be Installed In The Upper Part Of The Wall.