bids are invited for as boq - supply, installation, testing and commissioning of 4 toncassette type ac (indoor and outdoor unit), having minimum 4-way variable refrigerant flow/variable refrigerant volume (vrv/vrf) air cooled, indoor unit heaving ceiling mounted with synthetic washable media pre-filter, fan section with low noise fan/dynamically balanced blower, multi speed motor, coil section with dx copper coil, electronic expansion valve, outer cabinet, drain pump, grill, necessary supports, vibration isolation, cordless remote control etc., the unit shall have automatic force shut down provision in case of fire on receiving signal from bms system. the same capacity outdoor unit, variable refrigerant flow/variable refrigerant volume (vrv/vrf) air cooled, suitable for cooling and heating, having all hermetically sealed non-inverter type scroll compressor(s), minimum two compressors, suitable for operation on single phase 230v±10%, 50hz ac supply, make –hitachi/voltas/llyod/lg etc. including removing of existing cassette type and fixing of new cassette type ac, connection to idu to odu with suitable size copper pipe and copper wire (upto 15 mtr maximum), wooden frame for mounding of indoor unit etc. complete as required as direction of engineer in charge. total quantity : 4