Providing, Fabrication, Installation, Testing and Commissioning of Walk-in-Cold Room in Vindhyachal Hostel, IIT Delhi

6.0 m x 5 m x 3 m (H)

REFRIGERATION / AIRCONDITIONING SYSTEM: Designing, Supply Installation, Testing & Commissioning of factory assembled and factory tested Air Conditioner suitable for cooling having air-cooled outdoor units, all hermetically sealed Compressor(s) designed for - 4.0 deg C suction / evaporation temperature and 45 deg C ambient temp, side / top discharge type condensing unit(s), with R-410 a / 407C (or CFC and HCFC free) refrigerant, vibration isolators, with suitable foundation etc. complete as required. The unit shall deliver not less than 800 CFM supply air. The unit shall be suitable to work on 400 / 230 V ±10%, 3 / 1 Phase, 50Hz AC power supply. Indoor unit shall be equipped with washable synthetic media pre-filter (95 percent down to 5 micron), evaporator unit with fan section with low noise fan/dynamically balanced axial flow fans not less than 3 nos., multispeed motor, coil section with DX copper coil, thermostatic / electronic expansion valve, outer cabinet, Filter drier for moisture and dirt protection, drain pan, other necessary supports etc. The unit shall be filled with first charge of the refrigerant and ready for use as required. As per the following specifications. The cooling capacity of each indoor unit will be not less than 40,000 BTU/hour for both units (1 working + 1 standby) and should be able to cool the room upto 2 deg C. The unit shall have digital temperature indicator cum controller, High quality PT-100 Sensor for better accuracy, Safety and control devices for better system protection, Thermally protected and permanently lubricated fan motors, a logic controller (LC) for automation of controlling electromechanical processes, such as control of Temperature, Relative Humidity, Standby systems and event management with less maintenance, HMI with colour Display and touch screen, Data storage to record set values, process values, date & time with variable time intervals, Display of set value and process value. All electrical connections and panels and controllers, contactors, automation etc. are included in the scope. Refrigerant copper pipelines shall be provided as per site requirement. Power cable, control cable etc. shall be supplied and installed at site as per OEM recommendations are included. All power and control cables shall be multistranded copper with ISI marked and fire retardant. The controller and electrical panel shall be for controlling and operation of two units (1 working & 1 standby) complete as required. Electrical connections with suitable size of cables shall be taken from nearest Electrical Distribution panel board and one electrical DB with MCBs shall be provided for electric supply for the cold room complete as required. Refrigerant copper pipes of required diameter are included in the item. System shall be for (1 + 1) AC units, 1 working and 1 standby [I job includes two units of not less than 40,000 BTU/Hour each, working and standby]

Supply, installation, testing and commissioning of air-curtain with air velocity not less than 21 m/s with not less than 800 CFM, suitable for operation on 230 volt, 50 Hz supply with motor (blower) speed of 3000 rpm with all electrical accessories, limit switch etc. as required.

Demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 meters lead as per direction of Engineer-in-charge. In cement mortar.

12 mm cement plaster of mix: 1:6 (1 cement: 6 fine sand)

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, out site IIT campus. Including GST as required on site.

Kota stone slabs 20 mm thick in risers of steps, skirting, dado and pillars laid on 12 mm (average) thick cement mortar 1:3 (1 cement: 3 coarse sand) and jointed with grey cement slurry mixed with pigment to match the shade of the slabs, including rubbing and polishing complete.

MS Supports: Providing and fixing angle iron frames for doors, windows and ventilators of mild steel Angle sections of size 35x35x5 mm or 50 x 50 x 5 mm, joints mitred and welded by angle iron 35x35x5 mm or 50 x 50 x 5 mm as required or 35x 5 or 50 x 5 mm flat pieces to the existing T-iron frame or to the wall with dash fastener, including fixing of necessary butt hinges and screws and applying a priming coat of approved steel primer, all complete as per the direction of Engineer-In-charge.

225 mm width x 50 mm depth x 1.6 mm thickness

2nd year (For 12 months)

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4th year (For 12 months)

5th year (For 12 months)

6th year (For 12 months)