Providing Air Conditioning for Common Instrument Facility Lab 5/103 at IIT Gandhinagar

Amount

MACHINERY : Supply, Installation, Testing and commissioning of factory built Out door Type floor mounted chilled water double skin type horizontal/vertical, Plug type, air handling units made of 43 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) insulation factory injected between them by injection moulding machine, complete with plug type blower section with blower suitable for static pressure as required, minimum 2 bend GSS/PVC eliminators, cooling coil section with aluminium finned copper tubes (tubes thickness not less than 0.5mm) cooling coil of 6 row deep, filter section with 50mm thick metal viscous/ washable synthetic type air prefilters, with TEFC drive motor of efficiency class IE3 suitable for 415 ± 10% volts, 50Hz, 3 Phase AC supply suitably designed for varialbe frequency drive applications, drain connections, 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. complete as per specification and of following Capacities.28900 CMH / 28TR

CHILLED WATER PIPING : 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. -

100mm dia. (32 mm thick insulation)

80mm 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 - 80mm 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. - 80 mm dia.

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 / hot water circulation as specified. 80 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. 80 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

Thickness 1.00 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 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 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

Supplying and installing following size of perforated Hot Dipped Galvanised Iron cable tray (galvanisation thickness 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.

100 mm width X 50 mm depth X 1.6 mm thickness

Dismentling of existing out door units of Vertive make precision AC Unit model No CRV35 from open yard at Ground level including reinstallation at Tarrace with base frame, dismentling of refrigerent piping and refixing for new location,elctrical and control connection , To up of refrigerent , testing and commissioning etc as reqd . (Note: Work shall be exectuted through the M/s. Vertiv or authoried agencies of Vertiv)

Supply, Installation, testing and commissioning including vaccumiazation and Nitrogen testing of following nominal sizes of soft/hard drawn copper refrigerant piping for VRV/VRF system, complete with fittings, with suitable adjustable ring type hanger 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 for Suction and Liquid lines, all accessories as per specifications etc. as required :

a). 22.2 mm dia (OD) (Hard drawn) with tube thickness 1.2 mm with 19mm thick insulation

Dismantling of Chilled water ceiling suspended AHU having following capacity along with chilled water pipeline, drain, Valves, two way valve, comple as per the direction of engineer in charge including complete without disturbing the existing installations and shiting to store complete as required.

M. K. Aircon Systems Pvt. Ltd.