Supply, Installation, Testing Commissioning of High side AC equipments for Central LibraryofIIT Kharagpur.

Amount

Air Cooled Scroll Chiller a)Supply, installation, testing & commissioning of modular/ Inverter type scroll type air cooled water chilling machine each having minimum cooling capacity at 40 degC shall be as follows. Modules shall operate in master slave combination with automatic run time equalization between the modules b)Nominal conditions: c)Cooling: EWT & LWT shall be 12 & 7 Deg C. Minimum COP 3.35 at Nominal conditions (35 degC) d)Each module to have scroll compressor as per OEM design, complete with step capacity control etc, as per specifications. e)Suitable Nos & suitable capacity squirrel cage induction motor with class 'F' insulation suitable for operation on 415 volts +10% , 50 Hz, A.C. supply. f)Suitable Nos. & suitable capacity starting arrangement as per OEM standard g)Modular design chiller with the provision of added units as an when required. h)1 No. - Matching Air Cooled condenser with copper tubes and aluminium fins and 2 speed fans for noise control. i)1 No. - Matching Cooler of BPHE/ shell & tube type type. j)1 Lot - Refrigerant piping fittings, valves, accessories to inter connect compressor, condenser, chiller and expansion valve. k)Modbus communiation card with open protocol, with master slave combination for multiple units connected. l)1 Set - Control panel with display comprising of Controls. It shall also be equipped with protection and monitoring devices such as H/L Pressure switch/ Thermal and Current Overload Protector m)1 Lot - DP/ Flow switches at inlet and outlet of chiller, water drain & air purge valves, wherever required. n)Lot- suction line and chiller insulation o)Lot-frame work for mounting the above condenser, chiller, compressor and motor with base plate complete with antivibration pads/ springs. p)Lot- Initial/ first charge of refrigerant gas & compressor oil duly charged at factory.

Air Cooled Scroll ( 36TR)

Water Circulation Pumps- PRIMARY CHILLED WATER PUMP Supply, Installation, Testing and Commissioning of Back - Pullout Casing chilled water pump set capable of delivering 220 USGPM of water at 35 meter head, duly insulated with 32mm thik Nitrite Rubber , Each comprising of Suitable HP, TEFC Squirrel Cage Induction Motor with class "B" insulation, 1440 rpm synchronous speed, suitable for operatation on 415 ± 10% volts, 3 phase, 50 Hz A.C. supply. The Pump / M otor shall confirm to IE2 Standard (minimum) and 81.4% Efficiency (Overall pumping system). 150 mm dia dial type pressure gauges for inlet & outlet, mounted on common MS base plate, complete as per specifications etc. with canopy for outdoor installationas required. Vendor to check the pump head before quote.

220 USGPM of water at 35 meter head (2W + 1S)

Supply, Installation, Testing and Commissioning of Plant Manager required Hardware and software required for integration of chiller microprocessor , pumps with BMS system to be installaed with outdoor type enclosure

EXPANSION TANK Supply and installation of 1000 L HDPE Expansion Tank along with 1 No Float Valve and 3 Nos isolation valves for necessary connections including thermal insulation work by 75 mm thick Expanded Polystyrene covered with GI Chicken wire mesh, vapour barrier and 12 mm thick sand cement plaster cover

CHILLED WATER PIPING SECTION Supplying, laying/ fixing, testing & commissioning of following nominal sizes of chilled water pipes (with necessary clamps, vibration isolators and fittings but excluding valves, strainers, gauges etc)duly insulated with FR quality EP moulded pipe section of density 20kg/cum after a thick coad of cold setting adhesive (CPRX compound) covering with 12mm thick sand cement plaster & 6mm thick tarfelt jacketing. Note: The pipes of sizes 150mm & below shall be MS 'C" class as per IS: 1239 and sizes above 150mm shall be welded black steel pipe heavy class as per IS: 3589, from mimimum 6.35mm thick MS sheet for pipes upto 350mm dia and from minimum 7mm thick MS sheet for pipes of 400mm dia and above.

150 mm dia. (75 mm thick insulation)

125 mm dia. (50 mm thick insulation)

100 mm dia. (50 mm thick insulation)

80 mm dia. (50 mm thick insulation)

50 mm dia. (50 mm thick insulation)

SITC of butterfly valve (manual) with CI body SS disc, rubber seal & O ring PN 16 pressure rating for chilled water circulation as specified.

150 mm dia.

100 mm dia.

80 mm dia.

SITC of BALANCING VALVE WITH BUILT IN MEASURING FACILITY with C I body flanged construction with EPDM coated disc with long pitch with protected out pipe insulation & PN 16 pressure rating for chilled water circulation as specified.

80 mm dia.

SITC of NON - RETURN VALVE with duel plate of C I body SS plates vulcanized NBR seal flanged end & PN 16 pressure rating for chilled water circulation including insulation as specified.

100 mm dia.

SITC of Y - STRAINER of Ductile CI Body flanged ends with stainless steel strainer for chilled water circulation including insulation as specified.

100 mm dia.

SITC of the following Water line PRESSURE GAUGE as per following categories, sizes and qunatities complete with providing flanges, nut-bolts, gasket and welding arrangements: Bourden type pressure gauges of 100mm dia of suitable range shall be provided.The water pressure gauge shall be made of stainless steel grade SS304. The dial plate shall be powder coated with white colour base & the calibration shall be done in black colour. All the pressure gauges shall be complete with ball valves & SS Siphon and confirming to IS:3624.

Providing and fixing Industrial mercury in glass type thermometer

Ball Valve & Auto Air Vent

Supply, Installation & Commissioning & Installation of Flow Switch. (ISI approved)

Providingand fixing of flexible isolating bellows to PN16 complete with matching flanges nuts and bolts and restraining control rod complete with insulation

100 mm dia.

80 mm dia.

ELECTRICAL PANEL

Supply, installation, testing and commissioning of MCC panel with single incomer, 5 nos feeder for chiller units, 3 nos starter for chilled water pumps with 1no spare for each and all necessary protection and operation devices, incommer , Ammeter, Voltmeter, slelector switch indicator etc. the panel shall be outdooe and double door type

Supply and laying of one number 1.1 KV Grade XLPE insulated and PVC sheathed aluminium conductor cable ( Armoured ) Al cable conforming to IS: 7098 / 1988 with its latest amendment of following size.

3Core 16 Sq. mm

3Core 25 Sq. mm

4Core 35 Sq. mm

4Core 50 Sq. mm

Supply and laying of one number 1.1 KV Grade XLPE insulated Cu cable

3 core 2.5 sq.mm

Supplying & fixing earth of galvanized (Hot Dip) MS flat 25 mm x 3 mm on wall as per GS

Connecting the equipments to earth busbar including S & F Solid GI (Hot Dip) wire of size as below as per GS

Supply & Fixing of perforated GI cable tray with perforation not more than 17.5% suspended from ceiling/ floor mounted incl. S&F GI connector, 6mm dia MS suspender, bolts & nuts, steel fastener etc. as required of the following size. Incl. Al painting of MS support With S&F 25x25x3mm angle iron support

Dismantling and Buy back of existing AC plant. The item no shall be quoted as negative item

100TR capacity Water cooled Open type Reciprocating Chiller

Natural draft Cooling Tower

Water circulation Pumps. (1)Condenser Water. (2)Chilled Water.

Piping network of water circulation

Electric panel boards & cables

Comprehensive AMC of the chilled water system for four years after DLP.

CAMC for 1st year after DLP

CAMC for 2nd year after DLP

CAMC for 3rd year after DLP

CAMC for 4th year after DLP

Part- B : Civil Work Assessment at site, design , fabrication and installation of support all cmplete including vibration isolation for component of HVAC system (Chiller, plumps, Exp. Tank, Electrical Panel etc) on terrace by the vendor. The drawings shall be duly vetted by an independent Government institution before submission by the vendor to IIT Kgp and the execution shall be carried out at site after approval of IIT Kgp.