bids are invited for procurement and installation of air conditioning units at nii, new delhi.; 1 supply of fully charge refrigerant i.e r-32 2 tr (min.), 220-240 volt., three star rated (minimum), 3.56 eer/cop (minimum), minimum cooling capacity 6800w, etc split air-conditioning units suitable for commercial/industrial use at or above ambient temperature of 50 deg. celsius with rotary compressor complete with indoor and outdoor units comprising of blowers, motors, copper cooling (tube) coil, copper condenser (tube) coil with aluminium fins, condenser fan, remote, and standard kit including wire, copper pipe etc. the other specifications are as per the standard of original manufacturer. make blue star, o general, daikin [note the units should not be more than six month old from the date of award and unit should be suitable for long copper pipe length more than 20 mtr (distance between outdoor & unit)]. 4 set 2 providing & fixing of extra annealed temper suction and liquid copper piping (size of suction and liquid copper pipes are as per original split unit manufacturer) with all other supports and individually insulated with 13 mm nitrile rubber insulation, air tight tapping with other accessories i.e breaking of wall/ceiling & repairing after completion of each work, breezing, leak testing etc as per site requirement to complete the job in all respect. the specifications of copper pipes are as given below: 116 rmt a) for annealed temper copper pipe 5/8, out side dia 0.625, inside dia 0.555 and wall thickness 0.035 with 13 mm nitrile rubber insulation. b) for annealed temper copper pipe 1/4, out side dia 0.250, inside dia 0.190 and wall thickness 0.030 with 13 mm nitrile rubber insulation. c) for annealed temper copper pipe 1/2, out side dia 0.500, inside dia 0.436 and wall thickness 0.032 with 13 mm nitrile rubber insulation. d) for annealed temper copper pipe 3/8, out side dia 0.375, inside dia 0.311 and wall thickness 0.032 with 13 mm nitrile rubber insulation. 3 providing and fixing of heavy duty out door stand for split units 4 set 4 proving & fixing interconnected/main 1.1 kv, mutlistrand, frls 4 core x 2.5 sq.mm wire (multi-strand) & other accessories as per site requirement to complete the job in all respect. make: - finolex, havells, cmi 156 rmt 5 providing and fixing of 25mm heavy duty, hard pvc pipe line for drain with elbow, bend, clamp, 13mm insulation, etc. 32 rmt 6 providing and fixing of heavy duty pvc channel (for covering of refrigerant pipe+drain line) at least minimum size of 3x4 or as per site requirement. 22 rmt 7 installation of a split air conditioning unit 4 set 8 providing and fixing of suitable capacity auto change over switch for 2.0tr split unit 1 set 9 additional gas top-up as per site requirement. 4 job 10 buy back of old split air conditioning units 1 set