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| 1 | Chilled water piping |
| 2 | Supplying, Laying/ fixing, testing and commissioning of following nominal sizesof chilled water piping inside and outside the building ( with necessary clamps, vibartion isolators and fittings but excluding valves, stariners, gauges etc.) duly insulated with following closed cell elastometricnitrile rubber of minimum 45 kg / cum density, thermal conductivity 0.037 W/MK or better at 20deg mean temperature class \"O\" insulation applies by suitable rubber based adhesive complete with aluminium cladding including repairing of damage to building etc. as per specifications and as required complete in all respect. |
| 3 | Note:- The pipe of sizes 150 mm & below shall be M. S. \"C\" class as per IS : 1239 and pipes 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 for minimum 7 mm thick MS sheet for pipes of 400 mm dia and above. |
| 4 | 100mm dia. (32 mm thick insulation) |
| 5 | 80mm dia. (32 mm thick insulation) |
| 6 | INSULATED VALVES |
| 7 | Supplying, fixing, testing and commissioning of following valves, strainers, gauges in the chilled water plumbing duly insulated to the same specifications as the connected piping and adequately supported as per specifications |
| 8 | Butterfly valve (manual) with CI body, SS disc, nitrile rubber seal & O- ring, PN 16 pressure rating for chilled water circulation as specified |
| 9 | 100mm dia |
| 10 | 80mm dia |
| 11 | 65mm dia |
| 12 | NON RETURN VALVE |
| 13 | NON RETURN VALVE with dual plate of CI body SS plates vulcanized NBR seal flanged end & PN 16 pressure rating for chilled / hot water circulation including insulation as specified. |
| 14 | 65 mm dia. |
| 15 | Y strainer |
| 16 | Y strainer of ductile CI body flanged ends with stainless steel strainer for chilled water circulation including insulation as specified. |
| 17 | 80mm dia |
| 18 | 65mm dia |
| 19 | Providing and fixing in position the industrial type pressure gauges with gun metal / brass valves complete as required. |
| 20 | Providing and fixing in position the mercury in glass industrial type thermometers complete as required. |
| 21 | SITC of following sizes electronic,self balancing, pressure independent type dynamic balancing valve with integrated 2 way modulating control valves in a single body together with room thermostat. 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 with inputs from installed room thermostat. Maximum close off pressure shall not be less than 6 Bar for upto 50 mm valves and not be less than 7 Bar for 65 mm & above. Valves should have pressure rating of 25 Bar minimum. |
| 22 | 80 mm dia. |
| 23 | DUCTING , GRILLES & INSULATION |
| 24 | Fire Dampers |
| 25 | Supply,Fixing, testing & 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 in built mechanism and not externally mounted.The damper shall also be closed in the event of fire signal complete as required and as per specifications. |
| 26 | Fire Damper |
| 27 | Actuator |
| 28 | Supply & fixing of powder coated extruded aluminium Supply Air Grills with aluminium volume control dampers as per specifications. |
| 29 | Supply & fixing of powder coated extruded aluminium Return Air Grills with louvers but without volume control dampers as per specifications. |
| 30 | Supply, fixing testing commisioningof Supply air diffusers of powder coatedaluminium with aluminium volume control dampers with anti smudge ring & removable core. |
| 31 | Supply, fixing testing commisioningof Return air diffusers of powder coatedaluminium without aluminium volume control dampers with anti smudge ring & removable core. |
| 32 | Supply, installation,testing and commissioning of GI volume control duct damper complete with neoprene rubbergaskets,nuts,bolts,screws linkages,flanges., as per specifications. |
| 33 | Cable Tray |
| 34 | Supply and installingfollowing size of perforated painted with powder coating M.S Cable trays with perforation not more than 17.5% , in convinient sections , joined with connectors, suspended from the ceiling with M.S suspenders including bolts & nuts , painting suspenders etc as required. |
| 35 | 150mm x 50mm x 1.6 mm thick |
| 36 | 300 mm x 50 mm x 1.6 mm thick |
| 37 | 450 mm x 62.5 mm x 2.0 mm thick |
| 38 | 600 mm x 62.5 mm x 2.0 mm thick |
| 39 | Option ECO+ - INTERNAL DUCTING SYSTEM |
| 40 | Supply & Installation of Factory Pre-cut SMART Pre-Insulated ECO+ PIR Panels complete CFC & HCFC Free 20mm thick with FSK Reinforced Aluminium foil on one side and 80 micron Embossed Aluminium foil (Anti microbial, Anti fungal, Anti corrosion and UV Protection coating) on the other side and close cell not less than 95% Rigid Cellular foam insulation of thickness as specified below and material shall be Class O as per BS 476 Part 6 & Part 7 with 2 hours fire rating, with Density of 45(+-3)kg/m3 and should have Thermal Conductivity 0.023 W/mK , Water absorption shall be not more than 0.03% as per EN 13403 standard and panel should be GreenPro & GRIHA certified. The ductwork should be capable of handling pressures upto 2000 Pascals. The joint between the ducts shall be with Polymer slide in type joint between the ducts and all other polymer accessories to be of the same manufacturer. Measurement would be done on outer to outer. Supporting of Threaded Rod (6mm) & C Channel/ Wire supporting of reputed make recommended by Manufacturer to be provided.Manufacture should have minimum 10 years of experience in manufacturing of same product in India. Make: Asawa, AURA, Stiferite |
| 41 | 20 mm Thickness (Internal Ducting) |
| 42 | EXTERNAL DUCTING SYSTEM |
| 43 | Supply & Installation of Factory Pre-cut SMART Pre-Insulated PIR Panels complete CFC & HCFC Free 20mm thick with 80 micron Embossed Aluminium foil on the inner side and 200 micron Embossed Aluminium foil (Anti microbial, Anti fungal, Anti corrosion and UV Protection coating) on the other side and close cell not less than 95% Rigid Cellular foam insulation of thickness as specified below and material shall be Class O as per BS 476 Part 6 & Part 7 with 2 hours fire rating, with Density of 45(+-3)kg/m3 and should have Thermal Conductivity 0.023 W/mK , Water absorption shall be not more than 0.03% as per EN 13403 standard and panel should be GreenPro and GRIHA certifed. The ductwork should be capable of handling pressures upto 2000 Pascals. The joint between the ducts shall be with polymer slide in type joints with Patented Gasketed Bayonet and Special Reinforced tape on the joints. All polymer accessories to be of the same manufacturer. Measurement would be done on outer to outer. Supporting should be as per site requirement.Manufacture should have minimum 10 years of experience in manufacturing of same product in India.Make: Asawa, AURA, Stiferite |
| 44 | 20 mm Thickness (Internal Ducting) |
| 45 | Modular chilled water units |
| 46 | Supply and commissioning of AHRI crtified air cooled fix speed modular chilled water units each complete with cooling capacity of 37 TR with multiple scroll compressors within one unit, insulated evaporator, flow switch at evaporator, standard spring vibration isolators, integral refrigerant and should be with electronic expansion valve for precise temperature control and power / control cabling from starter to unit, BMS interface unit with all required hardwares and softwares (optional), Victaulic grooved couplings for cooler water in/out connections, control panel, complete charge of refrigerant and oil, accessories as required and called for, automatic and safety control mounted in micro-processor based console panel and all mounted on a steel frame complete as per specifications etc. The drive motor shall be suitable for 415 +/- 10% V, 50 cycles, 3 phase AC supply and motor cable terminal box shall be suitable to connectAluminium / copper cabling. The chiller will be sharged with R410A refrigerant.The refrigerant circuit shall include a discharge service ball type isolation valve, dual high side pressure relief valves, liquid line shutoff valve with charging port, dual low side pressure relief valves, solenoid valve, electronic expansion valves, and flexible refrigerant receiver, discharge liquid separator and R410 A refrigerant. The unit should meets ASHRAE 90.1-2022 for both full and part load efficiencies.Modular design with an ability to mix and match combinations (inverter+fixed) upto 16 connected chillers. They can operate in master and slave configuiration mode through single controller. |
| 47 | The chiller evaporator should be Brazed Plate Heat Exchanger (BPHE) type made entirely of stainless steel, with direct - expansion and counter - flows. The heat exchange surface is configured so as to maximize the exchange coefficient with minimal load losses. Capable of refrigerant working pressure of 650 psig. |
| 48 | Air cooled condenser with integrated fin and tube coils with inner grooved copper tubes and expanded into aluminimum fins and complete with sub cooler and top discharge air circulators using axial flow fans ith IP protection for outdoor duty, U shaped condenser coil guard etc. |
| 49 | Note: Fins and copper tubes of air cooled condenser along with ciopper tubing / piping with all joints and U bends exposed to coastal areas / corrosive atmosphere / aggressive ambient, shall be painted with special corrosion prevention coating either in factory or at site. |
| 50 | The compressor motor shall be with fixed driven and with protection for under voltage, over load, earth fault and single phasing, integrated thermal protection, oil valve and by pass line, Anti vibration supports etc. It should have differential pressure switch, chilled water temperature sensors, water flow sensors / flow switches etc. Compressor motor overloads capable of monitoring compressor motor current. Provides extra protection against compressor reverse rotation, phase loss, and phase imbalance. Motor overheat protection will be provided to ensure the motor reliability. |
| 51 | The controller should be intelligent & shall have following control facilities. |
| 52 | 1. Modular chiller with 7 - inch touch screen, the interface is clear and easy to operate. The entire module should be functional through single controller without any manual intervention - 16 nos single controller & provision to add future expansion. |
| 53 | 2. The schedule management mode can set the unit to automatically turn on/off by week or day. |
| 54 | 3. Self - restart function after power recovery. Customers can choose to activate this function by their needs, in case of accidental power off failure, the system will automatically record the operating mode before power off and restore the original mode after power restoration. |
| 55 | 4. Perfect self-diagnosis function, clear view of vault query to help maintenance quickly solve problems. |
| 56 | 5. All day nosie reduction mode or night reduction mode can be selected. The fan speed can be intelligently adjusted to create a comfortable and quiet environment. |
| 57 | Actual cooling capacity at designed conditions indicated below: |
| 58 | Ambient temperature: 95° F |
| 59 | Refrigeration capacity: 37TR |
| 60 | Chiller max area: 2.42 sq. mtr to meet the existing space available |
| 61 | Chilled water leaving temperature: 44° F |
| 62 | Chilled water entering temperature: 54° F |
| 63 | Fouling factor (FPS): 0.0005 ft2.h.oF/Btu |
| 64 | Maximum power consumed at design conditions not greater than 1.16 in iKw/TR @ 100% |
| 65 | System minimum COP at 100% load : 3.0 |
| 66 | System minimum IPLV : 4.0 |
| 67 | Sea freight and transit insurance upto nearest Kolkata port for th above package. |
| 68 | Clearing the goods from the nearest Kolkata port including customs clearance, local |
| 69 | Make - Daikin / Trane/ Carrier/ York |
| 70 | CHILLED WATER PUMPS |
| 71 | SITC of verticle inline type centrifugal chilled water pump set capable of delivering 90 USGPM of water. |
| 72 | a) 1 no. - Pump with bronze impeller, SS shaft, CI body and mechanical seal. |
| 73 | b) Duly insulated with 19 mm thick, 32 kg/cum density close cell nitrile rubber insulation cladded with aluminium sheets of 0.5 mm thickness and properlly clamped to pump in two semi-circular sections as per specifications. |
| 74 | c) 1 no. suitable HP, TEFC squirrel cage induction motor with class F insulation (IE-2), 1450 RPM synchronous speed, operating on 415 +/- 10% volts, 3 phase, 50 Hz A.C. supply. Minimum efficiency |
| 75 | d) CI/GM casing and gunmetal bronze impeller, Pump shaft SS rating PN - 16 Flush line braided SS, Outside balanced mechanical seal, SS springs and along with double sphere flexible connectors with flange for pipe connection etc. 90 USGPM of water 25 M head ( 2 Working + 1 Standby) |
| 76 | EXPANSION TANK |
| 77 | SITC of open type expansion tank of MS construction made of 6mm thick MS duly insulated with 50 mm thick TF quality expanded polystyrene of 24 kg/cum density covered with a layer of 120 gm/sqm polythene sheet (vapour barrier) and finally applying 26G aluminium sheet cladding complete with vent and outlets for system connection with float valave and drain valve. |
| 78 | 500X500X500 mm |
| 79 | FLEXIBLE CONNECTIONS |
| 80 | SITC of flexible conncetor as pump\"s pipe diameter suitable for PN 16 pressure rating to be installed at pump and Chiller\"s suction and discharge. |
| 81 | FLOW SWITCH |
| 82 | SITC of Flow switch with accessories as required. |
| 83 | ELECTRICAL PANELS |
| 84 | SITC of electrical panel as per CPRI standard and as specified in technical specifications. Panel shall be fabricated out of 14 gauge CRCA sheet steel with necessary structural supports in form of structural steel sections. Panel shall be floor mounted with IP 52 protection. Top bus duct/ cable entry and exit. The panel shall be compartmental, with suitable size of bus bar and sepearte cable/busbar chambers. Panel shall be treated with 7 tank process and 2 times epoxy painted. Proper gland size holes to be provided with proper sticker and danger sign on all sides of panel. Stardelta starter set with bypass switch to be provided for all pumps also. The cable chambers shall be free from any live open connections and minimum clearance to be provided. for terminations. earthing terminal to be provided along with panel which shall be 1 MTR wide of panel length. Proper ventillation to be provided with fans. Technical break up of each panel to be submitted along with TECHNICAL BID. |
| 85 | 1. Panel no. 01 - for 03 nos chilled water pumps and one spare with separate MCBs for all pumps and with switch gear for 12 KW electrical load. Switch gear make: L&T/Siemens/ABB. QTY: 01 Nos. 2. SITC of moulded case circuit breaker complete with its enclosure/MS powder coated box having size suitable for in&out cable termination, 3 pole + neutral link + phase barrier + spreader terminal, 50 KA rating suitable for 35 TR chiller. HavingSwitchgear make: L&T/Siemense/ABB. QTY: 02 Nos. 3. SITC of starter panel with all required electrical accessories having 02 nos MCBs + 01 nos spare suitable for AHU operations of 15 KW. QTY: 02 Nos. |
| 86 | AIR HANDLING UNITS |
| 87 | SITC of double decker type AHU having double skin panels with injected PUF insulation inside it. AHU shall have inbuilt heat recovery wheel feature, with same manufacturer as AHU having Eurovent/AHRI certification. Manufacturer shall have 10 plus years experience of designing and manufacturing in product i.e. energy recovery devices, with two side air flow having double decker construction in India. Manufacturer shall have facility to manufacture HRW and AHU body under his own roof in India.Capacity and Static pressure shall be as mentioned in BOQ. Frame of unit shall be made up of extruded Aluminium profile with thermal break property and without any welded joints.Following parameters can be considered while quoting:1) An AHRI 1350 certified casing shall be used. 2) Deflection class shall be minimum CD43) Leakage class shall be minimum CL4 4) Thermal transmittance shall be minimum CT3 5) Thermal bridging shall be minimum CB3 Make: Systemair, Stulz, Trane, DRI, Flaktwood |
| 88 | Programmable EC fans which can be operated as per varying load shall be prefered. AMCA certified fan performance will be considered for installation.Fan motor shall be energy efficient and suitable for 415+/-10% volts, 50 cycles, 3 phase squirrel cage with IP 55 protection.Motor shall be designed for quiet operation.Synthetic pre filter for class EU3 and washable synthetic non-woven media fine filters (microvee filters) for class F7 will be prefered. Rail provision to be made on filter frame to remove the filter by easy sliding and efficient gaskets to be provided for minimum leakages. Cooling coil with extended inlet outlet connections of desired dew point having AHRI certification will be prefered. Cooling coil shall mounted on SS drain pan having thickness of atleast 20 gauge with 25 mm closed cell nitrile rubber insulation. Mixing section of AHU shall be made up of built in dampers having plastic gear wheels and silicon gaskets provided between blades. HRW with minimum recovery of 75% of total heat, made up of pure aluminium foil. HRW effectiveness shall be considered as per AHRI 1060. |
| 89 | Safety standards: UL 1995, CSA C 22.2 No. 236-11, heating and cooling equipment.HRW media certification: DIN EN ISO 846Rotor requirements: ROHS Annex ll of 2011/65/eu and Amendment (EU) 2015/863.HRW manufacturer shall have able to show design performance in their own lab or test facility. facility should have provisions to show various test pointssuch as temperature & RH of fresh/supply and exhaust/return air, air quantity during change in ambient conditions for factory inspection. The heat whell media shall confirms to flame spread index 0 and smoke developed index 0 in accordance to ASTM E84-13A test for surface burning characteristics or test method published in NFPA 255, UL 723 & UBC 8-1. |
| 90 | 12000 CFM, ( 65 mm St. Pr, 6 Row CC ) |
| 91 | 12000 CFM, ( 65 mm St. Pr, 6 Row CC ) |
| 92 | INLINE FAN ( FOR TOILET Exhaust Air for COMMON TOILET Areas) |
| 93 | Supply,installation,testing and commissioning of Round / Cabinet type rectangular Inline fans with motor complete motor complete with TEFC Sq. Cage Inductionmotor suitable for 220 volts ± 10%,50Hz ± 3 %, single phase A.Csupply of class \"F\" insulationwith ,mountings accessories in allrespect with wiring upto power supply point& offollowing capacities as per specification and tender drawing mentioned. |
| 94 | 1000 cfm / 25mm St.Pr. |
| 95 | 900 cfm / 25mm St.Pr. |
| 96 | 700 cfm / 25mm St.Pr. |
| 97 | PLUMBING |
| 98 | G.I Condensate Drain Piping |
| 99 | Supplying, fixing, testing and commissioning of condensate drain water piping of GI \"Medium\" Class complete with fittings like elbows, tees, reducers, bends, MS Flanges, supports, welding, painting etc. as required & conforming to tender specifications and of following sizes, Drain pipe shall be duly insulated with 15 mm thick polyurethen foam insulation at the joints etc. as per specifications & as required |
| 100 | 40 mm dia NB |
| 101 | 50 mm dia NB |
| 102 | UPVC Condensate Drain Piping |
| 103 | Supply, installation, testing and commissioning of drain piping of hard UPVC pipe and fittings, insulated with 12 mm thick nitrile rubber. |
| 104 | 25mm |
| 105 | 32mm |
| 106 | 40mm |
| 107 | Supplying & fixing of18 G thick Aluminium extruded powder coated Fresh / Exhaust air weather protected louvers with bird screen type (with Aluminium frames if required) for ventilation with 12G GI wire mesh as per specification and sizes will be as per tender drawing mentioned. |
| 108 | ELECTRICAL WORKS |
| 109 | POWER & CONTROL CABLING |
| 110 | Supplying, laying, effecting proper termination, testing & commissioning of the following FRLS POWER CABLE sizes of 1.1 KV - PVC inner sheated,extruded PVC type ST2 sheathed & Galvanised steel strips/wire as per IS 7908 (Part-I) armoured aluminium conductor cables conforming to relevant latest amended Indian Standardsas per specification standard. |
| 111 | 4 C - 16 sqmm (COPPER - PVC - ARMOURED) |
| 112 | 4 C - 25 sqmm (COPPER - PVC - ARMOURED) |
| 113 | 4 C - 35 sqmm(COPPER - PVC - ARMOURED) |
| 114 | 3C x 6 Sq. mm |
| 115 | 3C x 4 Sq. mm |
| 116 | Earthing Strip / Wires. |
| 117 | Providing and fixing 8 SWG dia G.I. wire on surface or in recess for loop earthing along with existing surface/ recessed conduit/ submain wiring / cable as required |
| 118 | Providing and fixing 10 SWG dia G.I. wire on surface or in recess for loop earthing along with existing surface/ recessed conduit/ submain wiring / cable as required |
| 119 | VAV BOXWORKS |
| 120 | VAV BOX |
| 121 | Supplying, installation,testing & commissioning of VAV BOX of suitable capacity and sizes with actuator & and damper along with cabling for interconnecting etc as required & as per standard, drawings&specifications: |
| 122 | (0 - 4000 ) CFM |
| 123 | (0 - 3000 ) CFM |
| 124 | (0 - 2000 ) CFM |
| 125 | (0 - 1500 ) CFM |
| 126 | (0 - 1000 ) CFM |
| 127 | (0 - 500 ) CFM |
| 128 | SMOKE VENTILATION SYSTEM |
| 129 | SMOKEVENTILATION |
| 130 | FRESH AIR SUPPLY |
| 131 | Supply, erection,testing andcommissioning of ceiling hunged Tube Axial flow fans with adjustable pitch blade , MS casing, castaluminiumalloyimpeller completewith TEFC Sq. Cage Inductionmotor suitable for 415 volts ± 10%,50Hz ± 3 %, 6 / 4 pole, three phase A.Csupply of class \"F\" insulationand shall IE -3 with support,mountings with vibration isolator spring and fire rated canvas flexible connection etc. & of following capacity as per approved tender drawings.(Noise Level shall not be more than 90 DB at a distance of 3 metres).Note Fan shall be AMCA Certified. |
| 132 | In Normal / Emergency Mode: |
| 133 | Air Qty.= 9000 CFM |
| 134 | Static Pressure = 30 mm Wg |
| 135 | Motor = Not exceed 2.2 Kw. |
| 136 | EXHAUST AIR |
| 137 | Supply, erection,testing andcommissioning of ceiling hunged Tube Axial flow fans with adjustable pitch blade , MS casing, castaluminiumalloyimpeller completewith TEFC Sq. Cage Inductionmotor suitable for 415 volts ± 10%,50Hz ± 3 %, 6 / 4 pole, three phase A.Csupply of class \"H\" insulationand shall IE -3 with support,mountings with vibration isolator spring and fire rated canvas flexible connection etc. & of following capacity as per approved tender drawings.The fan shall be completely rated for fire @ 250°C for 2 Hours.(Noise Level shall not be more than 90 DB at a distance of 3 metres).Note Fan shall be AMCA Certified. |
| 138 | In Normal / Emergency Mode: |
| 139 | Air Qty.= 9000 CFM |
| 140 | Static Pressure = 30 mm Wg |
| 141 | Motor = Not exceed 2.2 Kw. |
| 142 | SUB - PANELS FOR SMOKE VENTILATION |
| 143 | Supply ,installation,testing and commissioning of Cubical wall mounted type switch board made of 2mm thick CRCA sheet as detailed below & conforming to the specifications. |
| 144 | Note: The HVAC contractor shall provide fire shunt relay contact in his panel wherever necessary along with auto/manual mode selector switch in the outgoingfeeder forAXIAL FLOW Fan to take fire input signal (Potential Free Contact).Cost shall be included in the panel price quoted by him. |
| 145 | For Axial FanWITH (5.0 HP Fan Motor) |
| 146 | 16A TPN MCB for 16 A WITH DOL Starter, overload relay, start / stop push buttons, phase indication lights with protection fuse,on / off / tripindicationlightswith protection fuse,ammeter ( 0-16 A) with single CT, single phase preventer. Auto Manual Selector switch. MCB shall be of 10KA |
| 147 | Controls & interlocking accessories as required. |
| 148 | POWER & CONTROL CABLING |
| 149 | Supplying, laying, effecting proper termination, testing & commissioning of the following POWER CABLE sizes of 1.1 KV - PVC inner sheated,extruded PVC type ST2 sheathed & Galvanised steel strips/wire as per IS 7908 (Part-I) armoured aluminium conductor cables conforming to relevant latest amended Indian Standardsas per specification standard. |
| 150 | 3C x 4 Sq. mm |
