bids are invited for details of boq items pcb card - replacement of outdoor unit pcb card , replacement of 12hp - replacement of 12hp outdoor compressor r410 , nitrogen pressure testing - nitrogen pressure testing and gas charging for whole system , indoor main pcb - replacement of indoor main pcb , indoor display pcb - replacement of indoor display pcb , outdoor fan motor - repairing of outdoor fan motor , drain pump and sensors - replacement of drain pump and sensors , amc of hvac system - providing amc services for hvac system as per detailed scope of job as attached.ahu 9300 cfm x 4 nos., 16000 cfm x 2 nos., 20800 cfm x 2 nos.odu 12 hp x 1 no., 18 hp x 2 nos., 20 hp x 3 nos., 24 hp x 10 nos.cassette unit - 32 nos. 2.01 tr 6 nos., 2.27 tr 1 no 2.5 tr - 23 no 4.0 tr 2 nos.cfu 500 cfm , s and i ac refrigerant - refrigerant gas charging gas charging of the hvac system including complete arresting of leakage, nitrogen testing, vacuuming and refrigerant gas filling total quantity : 235