Replacement of existing 2 x 14.2 TR PCPA with 4 x 8 TR Precision Air Conditioner PAC at INRES Centre Nangloi New Delhi

Amount

S.I.T.C. Work of PAC System

Dismantling of existing 1 x 14.2 TR PCPA by dismantling the Indoor & Outdoor units including the copper piping, other Electrical accessories etc. and despositing the same to near by AAI store as per direction of Engineer-in-charge.

Supply, installation, testing & commissioning of floor mounted, Top flow Air cooled DX type Precision Air condtioners with 28.8 KW of minimum gross sensible cooling capacity and microprocessor based controller to maintain indoor temperture of 19°C ± 1° and RH 50% ± 5. Machines should be designed for Ambient temp. of 45°C and the unit shall be suitable for operation on 415 Volts, 50 Hz, 3 Phase, 4 Wire AC supply. The Indoor unit shall comprise of Fixed Type Scroll Compressor, Evaporator Fan complete with Backward curved type with EC motor, Evaporator DX Cooling Coil, Microprocessor controllers, Electronic Expansion valve, Driers, Filter, Suction & Discharge piping, Internal power and Control wiring, Crankcase heaters, HP/LP Cutouts, Power & Control contactors and other Electrical accessories and each unit should be having individual display panel, which shall display date, time, actual & set values, operating conditions service alarm to reduce the down time & unit memory shall hold the most recent events . The Outdoor Condenser unit shall comprise of Condenser fans & motor, Condenser cooling coil (Copper coil with aluminium fins), fan speed controller, Isolator switch complete as per specifications complete as required.

Supply, Installation, Testing & Commissionng including vaccumiazation and Nitrogen testing of following nominal sizes of soft/hard drawn copper refrigerant piping between indoor & outdoor units, complete with fittings, with suitable supports, jointing/brazing including accessories, insulated with XPLE Class-O tubular insulation/with Class-O closed cell elastometric nitrile rubber tubular sleeves sections of specified thickness as given below including all accessories as per specifications etc. as required.

22.2 mm dia (OD) (Harddrawn ) with tube thickness 1.2mm with 19mm thick insulation

28.58 mm dia (OD) (Harddrawn ) with tube thickness 1.2mm with 19mm thick insulation

Supply and fixing of PVC insulated and FR PVC Round sheathed flexible copper conductor cable of 1.1 KV grade along with copper piping between indoor & outdoor units as per relevent IS specification complete as required.

3 X 2.5 sq. mm

Supplying and installing following size of perforated Hot Dipped Galvanised Iron cable tray cable tray (galvanisation not less than 50 microns) with perforation not more than 17.5%, in convenient sections, joined with connectors, suspended from the ceiling with G.I. suspenders including G.I. bolts & nuts, etc as required.

300 mm width X 50 mm depth X 1.6 mm thickness

Supplying and installing following size of perforated Hot Dipped Galvanised Iron cable tray "bends" ( galvanisation not less than 50 microns) with perforation not more than 17.5%, in convenient sections, joined with connectors, suspended from the ceiling with G.I. suspenders including G.I. bolts & nuts, etc as required.

300 mm width X 50 mm depth X 1.6 mm thickness

Supplying and installing following size of perforated Hot Dipped Galvanised Iron cable tray "bends" ( galvanisation not less than 50 microns) with perforation not more than 17.5%, in convenient sections, joined with connectors, suspended from the ceiling with G.I. suspenders including G.I. bolts & nuts, etc as required.

300 mm width X 50 mm depth X 1.6 mm thickness

Supplying and installing following size of perforated Hot Dipped Galvanised Iron cable tray “Cross member” ( galvanisation not less than 50 microns) with perforation not more than 17.5%, in convenient sections, joined with connectors, suspended from the ceiling with G.I. suspenders including G.I. bolts & nuts, etc as required.

300 mm width X 50 mm depth X 1.6 mm thickness

Supply & fixing of 40 mm dia. uPVC pipes for condensate drain and dehumidifier along with accessories etc. complete as required.

Supply & Charging of refrigerant gas 410A for above PAC System i/c leakage testing etc. complete as required.

Provision of angle iron stand fabricated from 50*50*5mm thick MS angle suitable to accommodate indoor unit as per Item No. 2 including painting, welding, finishing the stand etc. complete as required.

Provision of angle iron stand fabricated from 50*50*5mm thick MS angle suitable to accommodate outdoor unit as per Item No. 2 including painting, welding, finishing the stand etc. complete as required.

Supply and fixing of PVC insulated and FR PVC Round sheathed flexible copper conductor cable of 1.1 KV grade on wall surface as per relevent IS specification complete as required.

4 X 10 sq. mm

Supply, installation, commissioning of fabricated at site GSS sheet metal of 1mm thickness rectangular/round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports etc. as per specifications of following sheet thickness suitable for connection of PAC unit complete as required.

S.I.T.C. of Canvas connection fabricated with double layer of fire retardent canvas cloth of required size for each PAC unit complete as required at site.

Supply and fixing of acoustic lining of supply air duct and plenum with 25 mm thick resin bonded glass wool having density of 32 kg/m³, with 25 mm X 25 mm GI section of 1.25 mm thick, at 600 mm centre to centre covered with Reinforced Plastic tissue paper and 0.5 mm thick perforated aluminum sheet fixed to inside surface of ducts with cadmium plated nuts, bolts, stick pins, CPRX compound etc. complete as required and as per specifications.

Supplying and fixing of following thickness duly laminated aluminum foil of mat finish closed cell Nitrile rubber (Class "O") insulation on existing duct after applying suitable adhesive for Nitrile rubber. The joints shall be sealed with 50 mm wide and 3 mm thick self adhesive nitrile rubber tape insulation complete as per specifications and as required.

After Defect Liability Period, Annual Comprehensive Maintainance Contract of 4 x 8 TR PAC system i/c Servicing, Consumables & Spares etc. complete as required for continuos and smooth functioning as per agreement conditions for the following years:-

1st year (Rate per month) (After Defects liabilty period of one (01) year).

2nd year (Rate per month)

3rd year (Rate per month)

4th year (Rate per month)

5th year (Rate per month)

SNOWMEX ENGINEERS LIMITED

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PRASA INFOCOM AND POWER SOLUTIONS PRIVATE LIMITED