Indian Institute Of Technology-IITB has published Composite Works Including Hvac (Vrv/Vrf), Electrical, Civil, Fire And Safety At Community Center With 5 Years Camc Of Hvac System. . Submission Date for this Tender is 07-10-2022. HVAC Tenders in roorkee Uttarakhand. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 24-Sep-2022 | Corrigendum | Date | 07-10-2022 |
| Sl. No. | Item Description |
| 1 | MACHINERY |
| 2 | Variable Refrigerant VolumeSystem |
| 3 | Supply Installation, Testing & Commissioning of modular type Variable Refrigerant Flow/Variable Refrigerant Volume air cooled Outdoor units suitable for cooling and heating, having all hermetically sealed inverter type Scroll Compressor(s), minimum two compressors for above 14 HP modules, microprocessor based Controller, top discharge type condensing unit(s), with R 410 A Refrigerant, vibration isolators, with suitable foundation etc. complete as required. The unit shall deliver the rated capacity at AHRI Conditions and work even at 50°C ambient temperature without tripping. The unit shall be suitable to work on 400V +/- 10%, 3 Phase, 50Hz AC power supply. The unit shall be filled with first charge of the refrigerant and ready for use as required. The COP at AHRI conditions shall not be less than 3.1 and IEER not less than 6.5. |
| 4 | OutdoorVRF Unit |
| 5 | 44 HP |
| 6 | Floor Mounted DX AHU |
| 7 | AHU Construction: - Supplying, installation, testing and commissioning of factory builtfloor mounted double skin type DX Air Handling Units made of 40 mm thick panels consisting of G.I. Casing of thickness 0.8 mm preplasticized outside layer and 0.8 mm thick GI sheet inside layer with polyurethene foam (PUF) insulation factory injected between them by injection moulding machine, complete with plug fan suitable for static pressure as detailed below, cooling coil section with machanically bonded aluminium finned copper tubes ( tube thickness not less than 0.5 mm ) cooling coil, filter section with filter having filteration efficiency and particle size matching to MERV-8 Pre filters and MERV-13, TEFC drive motor suitable for 415+10% volts, 50 +3% Hz, 3 phase, A.C. supply, minimum IP 55, drain connections, with stainless steel drain pan duly insulated , andnecessary vibration isolation arrangement etc. complete as per specifications and drawingsof following capacities. |
| 8 | The unit shall be supplied with electronic expansion valve/s (Dx), thermostat/s, control wiring& all accessories as required for completing the installation. The price shall be inclusive of these items.AHUs shall be of following design parameters: |
| 9 | Filter section: - It should consist of pre-filter. Pre-filters section shall be with non-woven synthetic media down to 10 micron particle size with an efficiency of 90%. |
| 10 | Cooling Coil: - COIL- 1 No. 6 Row deep DX cooling coil of copper tue and aluminum construction. Copper tubes and Aluminium fins 10-12 fin /inch and Copper Header, Coil size shall be selected for air velocity of 500 ft/minute & velocity across filters at 500 ft/minute. Water side pressure drop should not exceep 10PSIG. |
| 11 | Fan and Motors: - AHU must have Airfoil design AMCA certified Plug type centrifugal Fan with IE3 energy efficiency motor.Fan motors shall be energy efficient with IE-3 grade and shall be 415±10% volts, 50 cycles, three phases, totally enclosed fan-cooled class F, with IP-55 protection. Motors shall be especially designed for quiet operation. Drive to fan shall be provided through Direct drive arrangement. Frequency converter (VFD) for energy saving & smooth regulation of air flow, shall be supplied by the AHU manufacturer for all AHUs with direct driven plug fans. Fans impeller shall be selected for minimum efficiency of 70%. Plug fans in fan array shall have individual VFDs for every motor fan set. Certified Computerized selection for AHU shall be with fan selection and sound level spectrum. Complete AHU sound level should be given in computerized selection sheet instead of sound level of bare fan. 1 No. 5.5 KW TEFC squirrel cage induction motor with class "F" insulation 1500 rpm synchronous speed, operating on 415+ 10% volts, 3 phase, 50 Hz A.C. supply. Motor efficiency shall be IE3. |
| 12 | Mixing Box: - Mixing box should have low leakage damper – actuator. The section should maintain proper length for proper air circulation. |
| 13 | Ultrasonic Pan Type Humidifiers (Winter): - Vendor shall be provided ultrasonic pan type humidifiers to maintain inddor relative humidity duringthe winter seasons suitable capacity of . The section should maintain proper length for pan type humidifier.(Only for Floor Mounted AHUs) |
| 14 | Accessories: LED light with cable; view port and cable gland should provide in fan sections by manufacturer (to protect further leakage). |
| 15 | AHU sound pressure level should be not be more than 65 db(A) at the distance of 1m from the unit. |
| 16 | Unit Should have: Mixing box, G4 filter sections, Coil section, Fan section. |
| 17 | Supply/Return Air - The air handling units should have aluminium volume control dampers with % Open & Close marking |
| 18 | There will be access door across every section of AHU. Vendor should have to take approval on type of Doors (Hinge type or removable type) |
| 19 | UVGI Lams shall be installed in each AHU and the intensityy of UV light should be as required to kill Medium of COVID-19 virus as per ASHRAE Guidelines. |
| 20 | Vibration isolators. |
| 21 | Fan outlet velocity not exceeding 2000 FPM |
| 22 | Total static pressure of AHU & row deep of cooling coil shall be checked by Vendor as mention blow. |
| 23 | 12000 CFM, 35.0 TR @ 50MMWC SP, MOTOR KW-5.5 KW |
| 24 | Supply Installation, Testing and commissioning of Imported fittings (Ref Net) Y-joints etc. |
| 25 | Supply Installation, Testing and commissioning of Corded remote controls with holder etc. As required. |
| 26 | Tube Axial Flow Fan (Emergency Exhaust) |
| 27 | Supply, installation, testing & commissioning ofAMCA certified Tube Axial Flow Fan with adjustable pitch. Theblade of the fan shall be made out of cast alluminium alloy duly dynamically and statically balanced mounted directly on TEFC Sq. Cage induction Motorsuitable for 3 phase 415 V ± 50 C/S AC supply with cylindrical casing made of welded MS sheet,duly painted motor support, bird screen and gravity louvers etc. |
| 28 | Note : |
| 29 | a) All motor shall be IE-3 and Fclass insulation for fresh air fans and H class insulation for smoke exhaust fans. |
| 30 | b) Fan motor speed shall not exceed 1450 RPM |
| 31 | c) Fan outlet Velocity shall not exceed 10.0 m/s for Emergency Operation. |
| 32 | d) Factory fitted Backdraft dampers and all accessories shall be part of theAxial fan |
| 33 | e) All Emergency Exaust Fans shall be fire rated for 250 deg C for two hours in accordance to BSEN12101-3:2015 standard. |
| 34 | 7000 CFM @ 35 MMWG SP, 3.75 KW motor -Emergency Exhaust |
| 35 | PLUMBING |
| 36 | PIPING & INSULATION |
| 37 | Copper Refrigerant Piping |
| 38 | 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 : |
| 39 | 6.4 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm with 19 mm thick insulation |
| 40 | 9.5 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm with 19 mm thick insulation |
| 41 | 12.7 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm with 19 mm thick insulation |
| 42 | 15.86 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm with 19 mm thick insulation |
| 43 | 19 mm dia (OD) (Hard drawn) with tube thickness 1.2 mm with 19 mm thick insulation |
| 44 | 22.2 mm dia (OD) (Hard drawn) with tube thickness 1.2 mm with 19 mm thick insulation |
| 45 | 28.58 mm dia (OD) (Hard drawn) with tube thickness 1.2 mm with 19 mm thick insulation |
| 46 | 34.9 mm dia (OD) (Hard drawn) with tube thickness 1.62 mm with 19 mm thick insulation |
| 47 | 41.27 mm dia (OD) (Hard drawn) with tube thickness 1.62 mm with 19 mm thick insulation |
| 48 | Supply and applying Fiber glass cloth on exposed copper pipe for protection of pipe insulation. |
| 49 | Supply and applying star bond paint on exposed copper pipe insulation Fiber glass cloth. |
| 50 | Supply, Installation, testing and commissioning of 10 KG Presure PVC pipe with 6 MM Nitrile insulation, complete withfittings, supports accessories in surface/recess as per specifications & site requirments |
| 51 | 25 mm dia |
| 52 | 32 mm dia |
| 53 | 40 mm dia |
| 54 | AIR DISTRIBUTION WORK |
| 55 | Supply, 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 etc. as per approved drawings and specifications of following sheet thickness complete as required. |
| 56 | Thickness 0.63 mm sheet |
| 57 | Thickness 0.80 mm sheet |
| 58 | Thickness 1.0 mm sheet |
| 59 | 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 |
| 60 | Thickness 0.63 mm sheet |
| 61 | Thickness 0.80 mm sheet |
| 62 | Thickness 1.0 mm sheet |
| 63 | Duct Insulation |
| 64 | 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. |
| 65 | 25 mm thick |
| 66 | 19 mm thick |
| 67 | Supply, Installation, Testing and Commissioning of Acoustic lining inside ducts using Non Fibrous fire retardant crosslinked polyethylene foam of 60+/- 3 Kg/m3 density & thickness of 15mmhaving porous surface on one side & a flat surface on other side using Synthetic rubber based Adhesive preferably Low VOC & high strength characteristic(Initial portion of ducting and main plenum) as per specifications |
| 68 | 15mm thick ecosound (FR-Open Cell Cross Linked Polyethylene) for supply & return air ducts |
| 69 | Supplying & fixing of powder coated extruded aluminium Return Air Grills with louvers but without volume control dampers complete as required. |
| 70 | Supplying & fixing of powder coated extruded aluminium Supply Air Grills with aluminium volume control dampers as per specifications. |
| 71 | 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. |
| 72 | a) Fire damper |
| 73 | b) Actuator |
| 74 | 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. |
| 75 | Duct Mounted Temperature Sensor |
| 76 | Supply, installing, testing & commissioning of the Duct mounted temperature sensor for reteun air stream. |
| 77 | ELECTRICAL |
| 78 | PANELS |
| 79 | Weather Proof isolators for Outdoor Units (IP-65) |
| 80 | Electrical Panel for VRV Outdoor Units and AHU ( 44HP) |
| 81 | Supplying, installation testing and commissioning of cubical type main MV panel board suitable for 3 phase, 415 + 10% volts, 50 + 3% Hz and of 35 KA rupturing capacity at 415 volts, fabricated from minimum 2 mm thick and doors of 1.6 mm thick CRCA sheet powder coated through seven tank process facility for prickling and degreasing complete with mountings, interconnections, earthing etc including mechanical and Electrical Inter lockingas required. |
| 82 | Incoming |
| 83 | 1 No. 160 Amps 415 volt 25 kA TPNMCCBwith microprocessor release having overcurrent and short circuit protection and CBCT & ELRcomplete with rotary operating mechanism with spreader. |
| 84 | Metering |
| 85 | i. Red/Green/Amber/ ON/OFF trip indicating lamps with MCB,s protection-1set. |
| 86 | ii. Communicable type Multi Function Meter (MFM) of accuracy class - 1 with 3 nos. 160/5 amps 10 VA CT"s to measure real time, total active energy, maximum demand, instant Power factor, frequency, harmonics etc. - 1 set |
| 87 | Bus-bar |
| 88 | Main bus bar rated at 250 amps 4 pole, 25 KA with heat shrinkable sleeveandshall be of aluminium. |
| 89 | Outgoings |
| 90 | 1 No. 63 amps & 2 Nos. 40ATPN MCB with outgoing feeder to 1 No. 44 HP (20 HP+12 HP+12 HP) VRV outdoor unit. The compartment shall contain an indicating lamp with MCB for ‘ON’ status of compressor motor. |
| 91 | 1 No. 32 amps 10 kA TPN MCB with thermal magnetic release for AHU motor VFD with space provision for VFD of5.5 KW |
| 92 | 2 Nos.6 amps 2 Pole MCBfor fire damper actuator. |
| 93 | 1 No. 6 amps 2 Pole MCBfor UVGI Lamp. |
| 94 | 1 No. 6 amps 2 Pole MCBfor return air temperature sensor. |
| 95 | NO/NC Contact for BMS as required. |
| 96 | 3 Nos. RYB Indication LightsLED type with MCB |
| 97 | 2 Nos. Push Buttons |
| 98 | Potential Free Contact for BMS as required. |
| 99 | 1 No. direct digital ammeter |
| 100 | All VFD (as per list of make) shall be with in built harmonic filter & capable to provided digital display showing electrical parameters like voltage, current and power consumption (both KW & KWH) as well as % speed indication. It shall also have Exhaust fan Aux. contactor, Communication Port compatible with BMS etc. complete as required The Drive is having IP 55 Enclosure for safe and reliable operation. The Drive should have 3C3 Coating on PCBs to safeguard the Drives from any contaminants in the ambient. VFD HAVE THE FOLLOWING CONTROLS:- 1-TEMP. SENSOR FEEDBACK TO CONTROL THE FAN SPEED FROM VFD. 2-TRIGGERING THE AHU SHUTDOWN DURING THE FIRE ON GETTING SIGNAL FROM FIRE DAMPERS |
| 101 | Starter Panels |
| 102 | Emergency Exhaust Fan Panel- 3.75 KW |
| 103 | 1 No. 6.3-10 amps. TP+N MPCB |
| 104 | 1 No. DOL starterfor 5.5 KW |
| 105 | 3 Nos. RYB Indication LightsLED type with MCB |
| 106 | 2 Nos. Push Buttons |
| 107 | 1 No. direct digital ammeter |
| 108 | NO/NC Contact for BMS as required. |
| 109 | POWER CABLES |
| 110 | Supplying and laying of following sizes of 1.1 KV XLPE insulatedCopper conductor armoured cables on existing cable tray / hume pipe / trench.. |
| 111 | 4 core 10 Sq mm |
| 112 | 4 core 6 Sq mm |
| 113 | CONTROL CABLING |
| 114 | Supply, laying, testing and commissioning of controlcabling, asper Standard specification including end termination as required. |
| 115 | Power Cabling( PVCinsulatedand PVC sheathed, armoured, Copper Conductorof 1.1 KV grade on existing cable trays). |
| 116 | 2C x 1.5 Sq mm |
| 117 | 3C x 2.5 Sq mm |
| 118 | Supplying and laying of following sizes of Flexible FRLS insulatedCopper conductoron existing cable tray / hume pipe / trench. |
| 119 | 2 core 1.5 Sq mm |
| 120 | Supplying and drawing following sizes of FRLS PVC insulated copper conductor, single core cable in the existing surface/ recessed steel/ PVC conduit as required. |
| 121 | 2 X 6.0 Sq mm |
| 122 | Supply and laying of aluminium conductor, XLPE insulated, armuored, PVC sheathed cable, 1100V grade cabe at a depth of 750mm below ground level including excavation and refling the trench over a cushion of 75mm thick sand alround and protected with burnt bricks on sides and on top as directed by the Engineer-Incharge, complete in all respects. The armouring of the cable shall be properly connected with the earth conductor by clamps etc. The cable shall be laid by boring the road as required and compaction of soil & repairing of surface in prior shape shall be done properly. |
| 123 | 3.5CX70Sqmm. |
| 124 | Supply and laying of aluminium conductor, XLPE insulated, armuored, PVC sheathed cable, 1100V grade cabeon existing cable tray / hume pipe / trench. |
| 125 | 3.5CX70Sqmm. |
| 126 | Supplying and making end termination with brass compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required. |
| 127 | 3.5 c x 70 sq.mm (38 mm) |
| 128 | 4 X 10 sq. mm (25mm) |
| 129 | Supplying and fixing of following sizes of medium class PVC conduit along with accessories in surface/recess including cutting the wall and making good the same in case of recessed conduit as required. |
| 130 | 25 MM |
| 131 | Cable Trays : |
| 132 | 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%, inconvenient sections, joined with connectors, suspended from the ceiling with G.I. suspenders including G.I. bolts & nuts, etc. as required. |
| 133 | 150 mm width X 50 mm depth X 1.6 mm thickness |
| 134 | 225 mm width X 50 mm depth X 1.6 mm thickness |
| 135 | Earthing with G.I. earth plate 600 mm x 600 mm x 6 mm thick including accessories, and providing masonry enclosure with coverplate having locking arrangement and watering pipe of 2.7 Meter long etc. with charcoal/ coke and salt as required. |
| 136 | Providing and fixing 25 mm X 5 mm G.I. strip on surface or in recess for connections etc. as required. |
| 137 | Providing and fixing 6 SWG dia G.I. wire on surface or in recess for loop earthing as required. |
| 138 | Supplying and fixing 40 to 63 amp 4Pole MCB rating , 240/415 volts, "C" curve, miniature circuit breaker suitable for inductive load of following poles in the existing MCB DB complete with connections, testing and commissioning etc. as required. |
| 139 | Supplying and fixing following rating, four pole, (three phase and neutral), 415 volts, residual current circuit breaker (RCCB), having a sensitivity current 30 mA in the existing MCB DB complete with connections, testing and commissioning etc. |
| 140 | 63 Amp |
| 141 | Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete. |
| 142 | Providing and fixing false ceiling at all height including providing and fixing of frame work made of special sections, power pressed from M.S. sheets and galvanized with zinc coating of 120 gms/sqm (both side inclusive) as per IS : 277 and consisting of angle cleats of size 25 mm wide x 1.6 mm thick with flanges of 27 mm and 37mm, at 1200 mm centre to centre, one flange fixed to the ceiling with dash fastener 12.5 mm dia x 50mm long with 6mm dia bolts, other flange of cleat fixed to the angle hangers of 25x10x0.50 mm of required length with nuts & bolts of required size and other end of angle hanger fixed with intermediate G.I. channels 45x15x0.9 mm running at the spacing of 1200 mm centre to centre, to which the ceiling section 0.5 mm thick bottom wedge of 80 mm with tapered flanges of 26 mm each having lips of 10.5 mm, at 450 mm centre to centre, shall be fixed in a direction perpendicular to G.I. intermediate channel with connecting clips made out of 2.64 mm dia x 230 mm long G.I. wire at every junction, including fixing perimeter channels 0.5 mm thick 27 mm high having flanges of 20 mm and 30 mm long, the perimeter of ceiling fixed to wall/partition with the help of rawl plugs at 450 mm centre, with 25mm long dry wall screws @ 230 mm interval, including fixing of gypsum board to ceiling section and perimeter channel with the help of dry wall screws of size 3.5 x 25 mm at 230 mm c/c, including jointing and finishing to a flush finish of tapered and square edges of the board with recommended jointing compound , jointing tapes , finishing with jointing compound in 3 layers covering upto 150 mm on both sides of joint and two coats of primer suitable for board, all as per manufacturer"s specification and also including the cost of making openings for light fittings, grills, diffusers, cutouts made with frame of perimeter channels suitably fixed, all complete as per drawings, specification and direction of the Engineer in Charge but excluding the cost of paintingwith : |
| 143 | 12.5 mm thick tapered edge gypsum moisture resistant board |
| 144 | Providing and fixing false ceiling at all heights with integral densified calcium silicate reinforced with fibre and natural filler false ceiling tiles of Size 595x595mm of approved texture, design and patterns having NRC (Noise Reduction coefficient) of 0.50 (minimum) as per IS 8225:1987, Light reflectance of 85% (minimum). Non combustible as per BS:476 (part-4), fire performance as per BS:476 (part 6 &7), humidity resistance of 100%, thermal conductivity < 0.043 W/m K as per ASTM 518:1991,in true horizontal level suspended on interlocking metal T-Grid of hot dipped galvanised iron section of 0.33mm thick (galvanized @ 120 grams per sqm including both sides) comprising of main-T runners of size 24x38 mm of length 3000 mm, cross - T of size 24x32 mm of length 1200 mm and secondary intermediate cross-T of size 24x32 mm of length 600mm to form grid module of size 600 x 600 mm, suspended from ceiling using galvanised mild steel items (galvanizing @ 80 grams per sqm) i.e.50 mm long, 8 mm outer diameter M-6 dash fasteners, 6 mm dia fully threaded hanger rod upto 1000 mm length and L-shape level adjuster of size 85x25x25x2 mm. Galvanised iron perimeter wall angle of size 24x24x0.40 mm of length 3000 mm to be fixed on periphery wall / partition with the help of plastic rawl plugs at 450 mm center to center and 40 mm long dry wall S.S screws. The work shall be carried out as per specifications, drawing and as per directions of the Engineer-in-Charge. |
| 145 | With 15 mm thick tegular edged light weight calcium silicate false ceiling tiles. |
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