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| 1 | SECTION A: MAIN EQUIPMENT |
| 2 | DOUBLESKIN AIRHANDLING UNITS |
| 3 | Supply, Installation, Testing and Commissioning of AHRI certified, factory built floor mounted chilled water double skin type horizontal/vertical air handling units with thermal break profile, with/ without mixing box, with supply, return & fresh air damper air (AL) damper,made of 50 mm thick panels consisting of pre plasticized G.I. casing of thickness 0.6mm outside layer and 0.6 mm inside layer with polyurethane foam (PUF) insulation factory injected between them by injection moulding machine, densitynot lessthan 40Kg/CuM, shallbecomplete with 50mm thick synthetictype pre- filters (MERV-8)with Aluminium wire mess,coolingcoil(minimum thickness 0.5mm ) section with6 RDseamless solid drawn copper tubesandaluminiumfins construction,fan section shall be AMCA certified centrifugal type with DIDWbladescompletewith backwardcurved DIDWcentrifugal fan, beltdrive/ direct driven package, limits switch, marine light & stainless steeldrainpan ( minimum thickness 1.25 mm and 13 mm close nitrile insulation )and vibrationisolation spring/cushy-foot mount. AHUs shall be selected foramaximum facevelocity of 500 FPM (2.5 MPS). Maximum outlet air velocity shall not exceed 2000 FPM (10.1 MPS). The motor shall be IE-3 uitable for 415 ± 10% volts, 50Hz, 3 Phase AC supply suitably designed for varialbe frequency drive applications,complete as per specifications, with 2-Way actuator valve and ahu temprature control. |
| 4 | AHU (F/M) - Horizontal Type |
| 5 | Air Quantity : 6000 CFM |
| 6 | Static Pressure : 50 mm wg |
| 7 | TR: 15 |
| 8 | Coil Rows Deep : 6 |
| 9 | Motor HP : 5.0 |
| 10 | SECTION - B, PIPING WORK. |
| 11 | CHILLED WATER PIPING |
| 12 | Supplying, laying/ fixing, testing and commissioning of following nominal sizes ofchilled/condenser water piping plumbing i/c fabrication of bends / elbows, tees, reducers etc) inside the building (with necessary clamps, wooden/puf support, vibration isolators, primer/ enamel paint, fittings but excluding valves, strainers, gauges etc.)as per specifications and as required complete in all respect.Note:- The Pipes of sizes 150mm & below shall be M.S. ‘C’ class as per IS : 1239 and pipes size above 150mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35mm 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. |
| 13 | 25 mm |
| 14 | 32 mm |
| 15 | 40 mm |
| 16 | 50 mm |
| 17 | 65 mm |
| 18 | Supplying & fixing insulation on existing MS \"C\" class pipe over exposed surface/underground of following sizes with 50 mm thick fire retardant thermocole ( polystyrene) molded pipe section of density 20 kg/cu.m after a thick coat of cold setting adhesive (CPRX compound) wrapping with500g polythene faced hessian cloth, wire mesh, sand-cement plaster &enamel painting two or more coat to give even shade after applying one coat of ordinary paint etc complete as required. |
| 19 | 25 mm |
| 20 | 32 mm |
| 21 | 40 mm |
| 22 | 50 mm |
| 23 | 65 mm |
| 24 | Supplying, fixing, testing and commissioning of following BUTTERFLY VALVE (MANUAL) with C I body SS Disc, Nitrile Rubber Seal & Oring PN 16 pressure ratingsize 200 mm to 400 mm gear type with removable wheel and below 200 mm with hand lever operated for chilled water/hot water circulation in the chilled water plumbing duly insulated to the same specifications as the connected piping and adequately supported as per specifications as specified. |
| 25 | 50 mm |
| 26 | CONDENSATE DRAIN PIPING WITH U TRAPS |
| 27 | Drain water piping of hard uPVC (industrial grade) as required and as specified complete with bends, reducers, tees, flanges etc. as required and with 9 mm thick closed cell elastomeric. Thermal conductivity max. 0.037 W/(m*K) @ +20 Deg C shall be considered for selection of insulation material with density of 55 Kg/cubm. All related works including Cutouts, Sealing of Cutouts, Connections to traps etc for completion of drain connections to Toilets, External Gully Traps, U traps etc shall be included and the same shall be done up to the satisfaction of EIC. |
| 28 | 25mm dia. |
| 29 | 32mm dia. |
| 30 | Cutting & dismantling of condenser / chilled water pipe line with grinder/welding machine/gas cutter for drain out the water from supply and return pipe line and making good after leakage repairing i/c re-filling of water inpipe line size from 20 mm to 400 mm dia including isolation of defective pipeline, valve operation, testing & commissioning etc as required. |
| 31 | 20 mm to 100 mm dia. |
| 32 | Providing & fixing ofBrass Air-Vent of following sizewith compatible Copper/MSpipei/c all necessary accessories & dismantling old if any complete as reqd. |
| 33 | 25 mm |
| 34 | Providing & fixing ofSS ball valve of following sizewith compatible to proportioning Copper/MSpipei/c all necessary accessories, support /hangers, including old dismantling if any complete as reqd. |
| 35 | 25 mm |
| 36 | Supplying, fixing, testing and commissioning Y - STRAINER of Ductile CI Body flanged ends with stainless steel strainer for chilled / hot water circulation including insulation as specified. |
| 37 | 50 mm |
| 38 | Cutting & dismantling of damaged and defective insulation, removing the thermocole , nitrile, PUF insulation or cladding from chilled water MS pipe line of size mentioned belowincluding hessian cloth, wire mesh, sand, cement, plaster, cleaning of pipe including shifting /dispose the waste material outside the premises of I.I.T. K. campus or desired location as reqd.. |
| 39 | 20 mm to 100 mm dia. |
| 40 | Supply and fixing industrial type thermometer ofproportioninglengthwith adjustable angle, direct reading including thermowell socket. Thermometer shall be suitable to read water temperature of range 0°C to 50°Ccompleted as required. |
| 41 | Providing and fixing 0-150 PSIGindustrial type pressure gauge in position of65/100 mm diawith petcock valves (gun metal / brass) complete with pressure snobber, nipple etc complete as required. |
| 42 | SECTION - C, AIR DISTRIBUTION |
| 43 | FACTORY/ SITE FABRICATED DUCT |
| 44 | Supplying, installation, balancing and commissioning of factory fabricated GSS sheet metal rectangular/ round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports, bends, transitions, reducers, end caps, collars etc as required complete in all respect in confirmation with IS : 655 and approved drawings and specifications of following sheet thickness complete as required |
| 45 | 0.63 mm (24 g) |
| 46 | 0.80 mm (22 g) |
| 47 | Supplying, installation, balancing and commissioning of fabricated at site GSS sheet metal rectangular/ round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports, bends, transitions, reducers, end caps, collars etc as required complete in all respect in confirmation with IS : 655 and approved drawings and specifications of following sheet thickness complete as required |
| 48 | 0.63 mm (24 g) |
| 49 | 0.80 mm (22 g) |
| 50 | SECTION - D, INSULATION |
| 51 | P & F of acoustic insulation with open cell Nitrile rubber sheet(Accosound) super silence of following thickness, on existing surface with adhesive i/c nut, bolt washer as req on duct.etc. complete as required. |
| 52 | 15 mm (in duct) |
| 53 | 25 mm (in ahu room) |
| 54 | Providing & fixing of thermal insulationwith aluminium foil facedXLPE Class \"O\" insulation sheet of following thicknesson existing surface of pipe/duct with dentrite/adhesive etc.The joints shall be sealed with 50 mm wide andselfadhesive alupet tapecomplete as required. |
| 55 | 13 mm (in RA duct) |
| 56 | 19 mm (in SA duct) |
| 57 | Grilles/Diffusers/Louvers/VCDs/FDs : |
| 58 | Supplying, Fixing, installation, testing and commissioning of supply air diffusers of powder coated aluminium with aluminium volume control dampers with anti smudge ring & removable core in confirmation to SMACNA/IS and as per specifications complete etc. as required. |
| 59 | Supplying, Fixing, installation, testing and commissioning of Return air diffusers of powder coated aluminium without volume control dampers with anti smudge ring & removable core in confirmation to SMACNA/IS and as per specifications complete etc. as required. |
| 60 | Supply & fixing of fire retardant single layer canvass made (up to 300 mm vide) with heavy clothes and suitable frame with G.I washer, nuts & bolts in suitable size. i/c jointing both sides with suitable gaskets complete as reqd. |
| 61 | Supplying, installation, testing and commissioning of GI volume control duct damper complete with neoprene rubber gaskets, nuts, bolts, screws linkages, flanges etc in confirmation to SMACNA/IS and as per specifications complete etc. as required. |
| 62 | Supplying, Fixing, testing and commissioning of fire dampers of minimum 90 minutes fire rated 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 and, in confirmation to IS and as per specifications complete etc. as required.. |
| 63 | Fire damper |
| 64 | Actuator |
| 65 | SECTION E : ELECTRICALS |
| 66 | ELECTRICAL STARTER PANELS FOR AHU. |
| 67 | Supply, installation, testing & commissoning of wall mounted cubicle type electrical panels including system control wiring with incoming, outgoing feeders as described below and as per specifications. AHU panelcasing shall be large enough to accommodate variable frequency drives. VFDs have been accounted for seperately under equipment portion schedule of quantities. |
| 68 | PANEL-\"C\" (IP-65) |
| 69 | Location :Close to Units |
| 70 | a.32A 4P MCB for 5.0 HP or 6000 CFM AHU motor- 01 Set. |
| 71 | b.RYB LED type indicationlights --- 01 Set. |
| 72 | c. Fully automatic DOLstarterwith built-in single phasing preventor, over load relayfor 5.0 HP or 6000 CFM AHUmotor --- 01 Set. |
| 73 | d.Auto-Manual typeselectorswitchtofacilitate autostartoffansafterrestorationofpower -- 01 Set. |
| 74 | e.Controlwiring& safety circuit as requiredwithStart-StopPB\"sandLED type \"ON\" \"OFF\"indication lights. |
| 75 | Electrical panels as described above. |
| 76 | Supply, Installation, Testing and Commissioning of variable frequencydrivesforthe above mentions Air Handling Unit. Variablefrequencydrives shall be providedwith necessary sensors, transmitters and complete with control wiring in all respect as required and as per specs.Thedrivesshallbesuitablefor the followingmotor rating. VFDs shall be housed in AHU Panels. |
| 77 | 3.7 KW (FC-51 Series) danfoss or equivalent. |
| 78 | SUPPLY & FIXING OF COPPER ARMOURED CABLES: |
| 79 | Supply, laying, affecting connections and Testing of the following sizes of 1.1 KV armoured XLPE insulatedcopper conductor cables. Cables shall be inclusive of all clamps, saddles, screws, cable identification tags, cable terminaljointsincludingterminal lugs, insulating tapes,affecting terminal connectionsto theequipmentas per the specifications and as required. |
| 80 | 4 Core x 2.5 Sq mm |
| 81 | 4 Core x 4.0 Sq mm |
| 82 | Supply,laying & Fixingof copper control cabling of following sizes : |
| 83 | 2Cx 1.5 Sqmm cable |
| 84 | Supply fixing connecting & commissioning of 5 Amp. 3 pin Plug top as reqd. make Anchor or its Equivalent. |
| 85 | EARTHING SYSTEM |
| 86 | Providing and fixing 6 SWG dia G.I. wire on surface or in recess for loop earthing as required. |
| 87 | OPENING OF WALL & RE-CLOSING |
| 88 | Making wall opening up to 750 mm dia/Suitable in any type / thickof wall for pipe/duct etc and re-closing the opening with brick, sand, cementandplaster up to 20 mm i/c re-painting as per existing desigine/shape complete as required. |
