Tenders Are Invited For Supply Of Free Cooling Unit

Tenders are invited for Supply of Free Cooling Unit: Air outlet configuration Gravity based dampers without any fan. Worm-protection net. The assembly shall ensure no water / rain leak into the shelter. The damper is closed when AC is operating and damper will open when FCU is operating Air inlet configuration Rain-proof cover, 48 V DC powered Axial flow fan, air filtering net, Gravity based dampers, worm-protection net, fine filters Filtration 90% down to 20 microns Airflow at full capacity 1200 + 200 CFM at 48 V (May be suitably designed as per site requirement). 2/4 fans may be used to meet the total CFM requirement, if required. Microprocessor based controller The Control unit (controller) shall be provided to automatically control the operation of FCU in all possible conditions in telecommunications equipment room in auto mode. It shall also have facility to switch on and off the air conditioning units installed in the room. Auto Mode Operation 1. Under favorable environment conditions, the controller shall switch off the air-conditioning unit and start free cooling. 2. Whenever room temperature rises above set temperature, then controller shall switch off the FCU / associated dampers and switch on the air-conditioning unit. 3. The controller shall switch off the FCU / associated dampers if battery voltage drop below set voltage. 4. Controller shall measure Run Hour of FCU Mode and Cooling Mode. 5. When ever the temperature of BTS exceeds 40 Deg C on a/c of AC failure or any other reason, there should be a provision to start Free Cooling Unit again through controller for emergency cooling. (Make: Pragati/ICON/Delta/Vertiv or of equivalent). Tender Link : http://www.tender.bt/