Electrical Installation work and SITC of air conditioning system for new constructed MOS chamber along with ante chamber and attached toilet at 7th floor of Vigyan Chetana Bhawan Salt Lake Kolkata 700064 SITC of AC Machines

Supply, Installation, Testing, and Commissioning of air-cooled Hi-Wall split type air conditioners of following capacities comprising Indoor and Outdoor Units with factory-charged Rotary/Scroll compressors (R-32/R-410A) including surface/concealed copper refrigerant piping insulated with closed-cell elastomeric nitrile rubber insulation and wrapping tape (up to 3 m), FRLS type copper power cable (up to 3.5 m) with suitable plug top, 3 meters of drain pipe, and wireless remote control with suitable battery. The system shall operate on 230V, 50Hz (±tolerance as per applicable standard), single-phase AC supply, providing cooling, dehumidification, and air circulation functions conforming to IS-1391 (Part-II ) with all amendments, and shall be capable of efficient performance at outdoor ambient temperatures up to 50°C, with a minimum 5- year OEM warranty on both the compressor and PCB. The system shall be installed with S&F appropriate fixing arrangements as per OEM recommendations, including wall openings, mending well the damages and making necessary connections including T&P & labour etc as required complete in all respect as per the direction of EIC. Cooling Capacity- 3.5 kW (Minimum) , Air Flow Rate:400 CFM (Minimum) Minimum ISEER - 5.0, BEE level - 4-Star(min) (Make- O-General/ Mitsubishi Electric/ Mitsubishi Heavy)

Cooling Capacity- 6.1 kW (Minimum) , Air Flow Rate:800 CFM (Minimum) Minimum ISEER - 5.0, BEE level - 4-Star(min) (Make- O-General/ Mitsubishi Electric/ Mitsubishi Heavy)

Supplying, Installation, testing and commissioning including vaccumiazation and Nitrogen testing of following nominal sizes of soft/hard drawn copper refrigerant piping for VRV/VRF system, complete with fittings, with suitable adjustable ring type hanger supports, jointing/brazing including accessories, insulated with XPLE Class-O tubular insulation/with Class-O closed cell elastometric nitrile rubber tubular sleeves sections of 19 mm thick insulation as given below for Suction and Liquid lines, all accessories as per specifications etc. as required :

6.4 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm

15.86 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm

S&F of additional following items for length exceeding 3.5 mtr for complete installation and commissioning of aboove AC machines. i) 2.5 sqmm, 3/4 core copper cable (FRLS type)

Supply & laying Soft Drawn PVC Drain Pipe 19mm dia with proper supports & brackets as per direction EIC.

Supplying fabrication & fixing of M.S u-channel of 6 mm thick of size (75 mm x 40 mm x 40mm) for making Base Frame/platform for installation of outdoor unit of above mentioned AC machines incl. drilling 2 nos holes in each channel, cutting holes into the wall & grouting the same with cement concrete(1:1 1/2:3) etc.fabricated with . horizontal angle of 25 mm x 25 mm x 6 mm and supporting angle of 50mm x50mm x 6mm in each platform in the outer edge for transmitting the load cenrally through 2 nos (50 mm x50mm x6 mm) angle inserted into the existing wall incl. fiber sheet shade as per Direction of E.l.C. The entire structure must be safe to carry out maintenance of ODU, as per Direction of E.l.C.

Dismanting of ductable type existing AC machine with necy. Arrangement by the skilled technician as per direction of EIC.