Revamping of existing ducted type centralized AC system by dismantling the existing Indoor packaged units and individual outdoor units and SITC of new VRF Outdoor units and Ceiling Suspended VRF AHU/ Ducted units at FCI RO cum DO building, Chennai

Supplying, installation, testing and commissioning of 30 HP capacity VRF Outdoor unit consisting of 100% inverter scroll compressor / Twin Rotary compressors, DC fan motor with aero-spiral fan blade, e-pass heat exchanger, safety valves, solenoid valves, receiver, capillary tube, check valve, electronic expansion valve, high pressure switch, low pressure sensor, pressure regulating valve, refrigerant filter, stop valve, accumulator and refnet kits. The Rate shall be inclusive of R-410A refrigerant & oil pre charging, vibration isolators, supports, necessary foundation / pedestal works, elbow duct/cowl piece, suitable power cable from isolator to VRF ODU each module (7.5 RMT) etc including lifting of the ODU, and all work to be executed as per the client's requirements. The unit shall deliver the rated capacity and in confirmation as per IS 18728:2024 and CPWD Specifications and work even at 50°C ambient temperature without tripping. The Indian Seasonal Energy Efficiency Ratio (ISEER) of the unit shall be as per Energy Conservation and Sustainable Building Code (ECSBC) 2024 as below and complete as per CPWD specification, connections, inter connections etc. as required. (For capacity < 40 kWr ISEER 5.4, Capacity ≥ 40 and < 70 kWr ISEER 5.5, Capacity ≥ 70 kWr ISEER 5.6 for ECSBC Building (WITH MININUM 2 COMPRESSOR IN EACH ODU). The VRF ODU shall be compatible for BMS integration and the minimum Cooling Capacity required at the following conditions a. 100% load condition b. 42 Degree Celsius ambient condition c. All IDUs are in operating condition d. Design indoor temperature - Office area: 24 DBT. RH shall not exceed 60%. The vendor to propose the suitable ODU considering the ambient deration. The VRF data sheet & ISEER data sheet shall be filled and submitted by the Vendor with the proposed VRF ODU capacity. The proposed VRF ODU capacity shall be approved by Client & Consultant before procurement. 30 HP

Supplying, installation, testing and commissioning of following capacity Ceiling Suspended AHU/ Ducted units Type Metallic body BMS Compatible VRF with Fan section having low noise direct/belt driven fan/dynamically balanced blower, multi speed motor, coil section with DX copper coil, Evaporator coil, electronic expansion valve, outer cabinet, vibration Isolators, drain pan, drain pump, high efficient filter, microprocessor thermostat, electronic expansion valve/AHU kit, remote, provision of fresh air duct connection, necessary ceiling supports, R410A gas (Refrigerant branch kit) for both liquid and gas line branch kits, oil charging, including AHU VALUE KIT & CSU and VFD starter panel for FM AHU's With BMS compatibility etc., complete as required (a) 12 TR- ESP- 25 mm

(b) 16 TR- ESP- 25 mm

Supplying, Installation, Testing and Commissioning of Y/T/Multi Joints. Joints shall be of same Original Equipment Manufacturer (OEM) make as of ODUs and IDUs (a) Indoor Units

(b) Outdoor Units

Supply, Installation, testing and commissioning including vaccumization and Nitrogen testing of following nominal sizes of soft/hard drawn copper refrigerant piping for VRV/VRF system, complete with fittings, with suitable size cable tray/adjustable ring type hanger supports, jointing/brazing including accessories, insulated with Class-O closed cell elastomeric nitrile rubber tubular sleeves sections of specified thickness as given below for Suction and Liquid lines. Exposed pipe should be weather coated with glass cloth wrapping as per OEM make for pipe sizes ranging from 15.9 mm to 50.8 mm outer diameter

Supply, installation, testing and commissioning of UPVC drain piping complete with fittings and supports as per specifications and duly insulated with 9 mm thick closed cell elastomeric nitrile rubber or XLPE cladded with 26G aluminium sheet (a) 32mm ID

(a) 50mm ID

Supplying, installation, testing and commissioning of Shielded control cum transmission wiring of following size copper Shielded insulated cable in suitable PVC conduits accessories between indoor and outdoor units including necessary securing of conduit, making good the wall and floor with cement 2C x 1.5 Sq mm (Un-armoured)

Supply, installation, testing and balancing of Air Distribution System consisting of factory / Site fabricated sheet metal ducting complete with supports, anchor fasteners and tie-rods, cradles, angle iron supports, GI bolts and nuts, 4mm thick self-adhesive neoprene rubber gasket, stiffeners, zinc chromate painted angle iron flanges, chipping and plastering of openings made for duct supports etc., complete as per specification including turning vanes, straightening vanes, splitters, inspection doors probe, inlets with test openings enclosures complete with locking caps, chain, gaskets, etc. (a) 1.2 mm thick GSS ducting (18G) – factory fabricated