bids are invited for precision ac1 - precision ac unit supply of minimum 30kw total cooling capacity floor mounted top discharge air cooled dx type precision air conditioning unit with air flow rate not less than 4500 cfm and sensible heat ratio (shr) above 90 percent , precision ac2 - supply of material for the connection and installation of precision as per the schedule enclosed , precision ac3 - installation testing and commissioning of units including sequencing of units , precision ac4 - lifting shifting and positioning of new units , precision ac5 - minor civil works for copper pipe entry by opening wall section and closing with normal plastering and fire rated painting and raised floor tile cutting , precision ac6 - dismantling and buy back of old 2 nos of 5.5 tr voltas ductable ac total quantity : 10