Provision of Chilled Water Air conditioning system and Ventilation at lab AB-6-203 at Indian Institute of Technology Gandhinagar. 2nd Call

Amount

Supply, Installation, Testing and commissioning of factory built Ceiling Suspended chilled water double skin type Air handling units made of 45 mm thick panels consisting of pre plasticized G.I. casing of thickness 0.8mm outside layer and 0.8 mm inside layer with polyurethane foam (PUF) not less than 40kg /Cum density, insulation factory injected between them by injection moulding machine, complete blower section with pluged type Fan and motor of suitable pole,of suitable static pressure, minimum 2 bend GSS / PVC eliminators 6 row deep cooling coil section with aluminium finned copper tubes (tube thickness not less than 0.5mm), filter sections with 50 mm thick washable synthetic type air pre-filters having efficiency 90% down to 10 micron, suitable for operation on 415+/-, 10% volts, 50 Hz, 3 phase, A.C. supply suitably designed for varialbe frequency drive applications, drain connections with drain valve,stainless steel (18G) drain pan with PUF insulation, 150 mm dia. dial type pressure gauges (2 nos.)and industrial type thermometers (2 nos.) at the inlet and outlet of coil, auto purge valve wherever required, necessary vibration isolation arrangement etc. Supply air side Fire retardant canvass connection with damper etc, complete as per specifications and of followings capacities.

10.00 TR / 2500 CFM

Supply, installation, testing and commissioning of floor mounted cabinet type double skinned centrifugal exhuast air unit, canvass connection at suction side to exhuast ducting along with suction & descharge side dampers, made of 25 mm thick panels consisting of pre plasticized G.I. casing of 0.8 mm outside layer and 0.8 mm inside layer with polyurethene foam (PUF) insulation factory injected between them by injection moulding machine, complete with blower section with blower suitable for static pressure as required, pluged type fan with motor of higher effecinecy suitable for 415 +/- 10% volts, 50Hz, 3 Phase AC supply suitably designed with suitable speed control drive necessary vibration isolation arrangement etc. complete as per specification and of following capacities. Discharge side to have GI exhaust cowl and SS bird screen, suitable electrical starter panel with MCB protection, unit shall be BMS compatible.

Supplying, laying/ fixing, testing and commissioning of following nominal sizes of chilled water piping inside the building (with necessary clamps, vibration isolators and fittings but excluding valves, strainers, gauges etc.) duly insulated with following closed cell elastometric nitrile rubber of minimum 45 Kg / m3 density, thermal conductivity 0.037 W/MK or better at 20 deg mean temperature class ‘O’ insulation applied by suitable adhesive complete including repairing of damage to building etc. as per specifications and as required complete in all respect. Note:-The Pipes of sizes 150 mm & below shall be M.S. ‘C’ class as per IS : 1239 and pipes size above 150 mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35 mm thick M.S. Sheet for pipes upto 350 mm dia.and from minimum 7mm thick MS sheet for pipes of 400 mm dia and above. - 50 mm dia. (32 mm thick insulation)

Supplying, fixing, testing and commissioning of following valves, strainers, gauges in the chilled water duly insulated to the same specifications as the connected piping and adequately supported as per specifications.

BUTTERFLY VALVE (MANUAL) with C I body SS Disc, Nitrile Rubber Seal & O- Ring PN 16 pressure rating for chilled water circulation as specified - 50 mm dia.

SS BALL VALVE complete with Flanges Nutbolts with SS Body and Working parts - 25 mm dia.

Y - STRAINER of Ductile CI Body flanged ends with stainless steel strainer for chilled circulation including insulation as specified. - 50 mm dia.

Supply, Installation, Testing and Commissioning of following sizes electronic, self-balancing, pressure independent type dynamic balancing valve with integrated 2 way modualating control valve in a single body. The actuator shall be capable of accepting upto 10V DC and upto 20mA electric signal and shall provide similar transduced feedback output to control system. Maximum close off pressure shall not be less than 6 Bar for upto 50 mm valves and 7 Bar for 65 mm & above. Valves should have pressure rating of 25 Bar minimum. 50 mm dia.

Supplying, fixing, testing and commissioning of Automatic Air Purge Valve at AHU chilled water outlet pipe duly insulated to the same specifications as the connected piping and adequately supported as per specifications. - 20mm dia.

Supply, installation, balancing and commissioning of factory fabricated GSS sheet metal rectangular/round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports etc. as per approved drawings and specifications of following sheet thickness complete as required.-

Thickness 0.63 mm sheet

Thickness 0.80 mm sheet

Supplying, fixing testing commissioning of supply air diffusers of powder coated aluminium with aluminium volume control dampers with anti smudge ring & removable core.

Supplying, fixing testing commissioning of Return air diffusers of powder coated aluminium without volume control dampers with anti smudge ring & removable core.

Supplying & fixing of powder coated extruded aluminium Return Air Grills with louvers but without volume control dampers complete as required.

Supplying, Fixing,testing and commissioning of fire dampers in supply air duct/main branch and return air path as and where required of required sizes i/c control wiring,the damper shall be motorized and spring return so as to close the damper in the event of power failure automatically and open the same in case of power being restored. The spring return action shall be inbuilt mechanism and not externally mounted. The damper shall also be closed in the event of fire signal complete as required and as per specifications.

Fire damper

Actuator

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. - 25 mm

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.

Supply, installation, testing & commissioning of Rigid PVC drain piping of 10 Kg / Sq. Cm. of pressure rating for the units with insulation as per specifications and suitable for following pipe sizes. 40 mm (13 mm plain sleeve & not self sleeve)

Providing 0.63mm thick plane aluminium cladding over the insulated HVAC GI Duct complete with bend curves, flanges, nut bolts/revets etc complete as requred.

Supplying & Laying of one number additional XLPE insulated & PVC seathed Copper conductor armoured power cable of 1.1 KV grade of following size on cable tray/ surface as required.

6 sq.mm x 4 core copper conductor cable

1.5 Sqmmx 4 core Copper Conductor cable

Supplying and making indoor end termination with brass compression gland and copper lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required.

4 X 6 sq. mm

S M Airconditioning