Site Preparation for installation of Equipments of Bio lab in AB-6-207 and Mechanical lab in AB-6-205 at Indian Institute of Technology Gandhinagar SH- HVAC work

Amount

Machinary: Supply, Installation, Testing and commissioning of factory built floor mounted chilled water double skin type horizontal/vertical, plug drive type , air handling units made of 25mm 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 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 6/8 row deep, filter section, MIXING CHAMBER with 50mm thick metal viscous/ washable synthetic type air prefilters with fine filter for 0.5 micron capacity,Plug fan package 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. 8500 CMH / 25TR

Supply, Installation Testing & Commissioning of ceiling suspended chilled water based multiflow cassette type fan coil units with Cord less remot, factory Auto Balancing Valve, Ball Valve of PN 16 rating along with Room thermostate. All valve assemblies are to be insulated with closed cell elastomeric rubber insulation. Complete as per specifications, drawings & requirments. Including civil work and making good dameges. 3.0 TR / 1200CFM

Exhaust Air Unit : Supply, installation, testing and commissioning of inline fan alongwith exhaust HVAC Duct , Single skin ,cabinet type made with galvanised sheet steel , direct driven, flanged for inlet and out let duct connection, of following sizes suitable for single/ three phase AC Supply, connection complete with motor, fan section , electrical terminal box etc shall bear AMC seal etc as reqd Fan supplied shall be AMCA Certified.

720 CFM , SP-25mm WC,with DIWD Forward curve centrifugal fan similar to model no CCD9-7 T of Kruger make

1000 CFM , SP-80 mm WC,with DIWDbackward curve centrifugal fan similar to model no CFT B-200 CM of Kruger make

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.

80mm dia. (32 mm thick insulation)

65 mm dia. (32 mm thick insulation)

50 mm dia. (32 mm thick insulation)

40 mm dia. (32 mm thick insulation)

32 mm dia. (19 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.

BUTTERFLY VALVE (MANUAL) with C I body SS Disc, Nitrile Rubber Seal & O- Ring PN 16 pressure rating for chilled water circulation as specified - 65 mm dia.

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.

BUTTERFLY VALVE (MANUAL) with C I body SS Disc, Nitrile Rubber Seal & O- Ring PN 16 pressure rating for chilled water circulation as specified - 40 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. - 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.

DUCTING AND GRILLS 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 & fixing of powder coated extruded aluminium Supply Air Grills with aluminium volume control dampers as per specifications.

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

Supply, installation, testing and commissioning of GI volume control duct damper complete with neoprene rubber gaskets, nuts, bolts, screws linkages, flanges etc, as per specifications.

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

Fresh Air Arrangements Supply, installation, testing and commissioning of fresh air arrangements with Al rain Louvers / Damper / SS Bird screen for AHU/FFU Fresh Air intake finally comprising of For Fresh air including supply/fixing of MERV 6 (20 micron) Filter (400 FPM Area) per each Unit as per layouts; Required finishes for Fascad Exposed Fresh/Ex Air assemblies shall be provided as per Architects shall be included in cost - For FRESH AIR

INSULATION 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.

Supplying, fixing acoustic lining on wall and ceiling of AHU roomswith 50mm thick, density 32 kg/cu.m resin bonded glass fiberinsulation friction fixed in 610mm x 610 mm frame work made ofchannel and covered with reinforced fiber glass tissue and finishedwith 0.80 mm perforated aluminium sheet 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)

25 mm (13 mm plain sleeve & not self sleeve)

Cabling: 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.

4 sq.mm x 4 core copper conductor cable

1.5 Sqmm x 4 core Copper Conductor cable

1.5 Sqmm x 3 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 4 sq. mm

Cable Trays 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

S M Airconditioning