SupplyInstallationTesting and Commissioning of HVAC works for vertical extension of OPD building Third Floor at Dr B Borooah Cancer Institute Ghy

Amount

Chilled water piping

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 elastometric nitrile 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.

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.

80mm dia. (32 mm thick insulation)

INSULATED VALVES

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

Butterfly valve (manual) with CI body, SS disc, nitrile rubber seal & O- ring, PN 16 pressure rating for chilled water circulation as specified

80mm dia

NON RETURN VALVE

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.

65 mm dia.

Y strainer

Y strainer of ductile CI body flanged ends with stainless steel strainer for chilled water circulation including insulation as specified.

80mm dia

Providing and fixing in position the industrial type pressure gauges with gun metal / brass valves complete as required.

Providing and fixing in position the mercury in glass industrial type thermometers complete as required.

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.

80 mm dia.

DUCTING , GRILLES & INSULATION

Fire Dampers

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.

Fire Damper

Actuator

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

Supply & fixing of powder coated extruded aluminium Return Air Grills with louvers but without volume control dampers as per specifications.

Supply, fixing testing commisioning of Supply air diffusers of powder coated aluminium with aluminium volume control dampers with anti smudge ring & removable core.

Supply, fixing testing commisioning of Return air diffusers of powder coated aluminium without aluminium volume control dampers with anti smudge ring & removable core.

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

Option ECO+ - INTERNAL DUCTING SYSTEM

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

20 mm Thickness (Internal Ducting)

EXTERNAL DUCTING SYSTEM

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

20 mm Thickness (Internal Ducting)

Modular chilled water units

The chiller shall be scroll type, compeltely factory fitted/manufactured as one package including water circulation pump (with pump's accessories), evaporator, condenser, sub cooler, hermatic compressor, necessary/required piping and wiring along with lubrication system and digital controlling facility as an inbuilt feature. The chiller shall be factory manufactured and pressure tested as per AHRI standards and as per technical specifications. Operational run to be taken at manufacturing facility itself at full load conditions during/ creating peak climatic conditions observing parameters of the chiller in all respect. All necessary testing, commisioning, installation activities and facilities are to be provided by manufacturer at factory and at site also. The chiller shall complies ISO9001:2015 in all respect i.e. desigining, manufacturing, testing and quality assurance.

Compressor The compressors shall be hermatic type scroll compressor. MOC of compressor shall be forged steel with symmetrical profile. Compressor shall be suitable for continuous operation at 50 Hz, 03 phase, 400 (+/- 10%) Volts ac supply and at RPM near to 2900. Multiple compressors shall be used in single chiller for capacity control as per varying load, also single compressor shall be suitable for operation with varying and fixed frequency. The compressors shall be fitted with crankcase heater for maintaining oil temperature seperately for an individual compressor during shut down and operation period having integral oil seperation system, oil pump and oil sight glass with filter. The compressors shall be suitable for operations with R410A/ CFC free refrigeranthaving suction and discharge side check valve, suction filter, suction discharge side service valve mounted on GI base with vibration isolators with factory fitted sound isolation feature. The compressors shall be direct driven integral hermatic motor and motor shall be suitable for continuous operation. Every compressor shall be having factory provided one year warranty. The compressor's set up shall be inclusive of automatic capacity control with unloaded starting device, high and low pressure cut outs, safety valves, oil pressure gauges. Unloading process shall be done by sensing chilled water outlet temperature with electronic sensors through microprocessor.

Condenser MOC of condenser coil tubes shall be Copper having self spacing fins collars made up of die formed aluminium. Fins to be mechanically bonded to the tubes. Casing of the condenser shall be of heavy gauge GI material and duly power coated to protect against climatic conditions. Condenser fans/blowers shall be statically and dynamically balanced, also to be designed for silent operation at required air flow rates with optimum static pressure. The drain pan shall be fabricated out of heavy steel sheet duly insulated with expanded 25mm polytherene sheet. Condenser coil shall be cleaned, and tested for leakages at factory facility. Circuit shall be fed with liquid refrigerant through the expansion device and distributor. The coil shall have hydrophilic coating for effective protection. Condenser shall include mounting's supports and refrigerant in/out connections.

Evaporator The evaporator shall inclusive of mounting supports, Refrigerant and Water in/out connections, having MOC of brazed plate heat exchanger as AISI 316 stainless steel with coating of anti-condensation material in a closed cell neoprane/ closed cell foam (CFC & CFC free) thermal insulation, weather proof and UV resistant. Plate technology shall be the base of heat exchanger design, comprising all plates single step pressed for uniform thickness of plates without any weak spots. All plates should be pressed with herring bone or arrow pattern for maximum contact points, heat transfer capacity and maximum turbulance. All plates shall be firmly brazed together along their periphery to ensure pressure resistant unit. Evaporator unit shall be incluse of water and refrigerant in/out connections, and mounting supports.

Control console Each air cooled chiller shall be provided with following features: 1. Utility water temperature control probe; 2. Anti freeze probe; 3. High pressure gauge; 4. Low pressure gauge; 5. Mechanical flow switch; 6. Condensation pressure control; 7. High pressure safety valve; 8. Compressor internal and external over temperature protection.

Inbuilt Pumping facility The chiller shall have factory fitted inbuilt pumping facility for circulation of chilled water across eveporator and it shall be controlled by microprocessor unit.

Others Necessary refrigerant copper piping shall be of heavy class standard and known make copper piping for flow of suction and discharge piping. VFD Chiller shall be manufacture with VFD mounted on it for automatic capacity control between 50 to 100%. Refrigerant used in chiller shall be R410A/R134a/HFC & CFC free refrigerant.

Ambient temperature: 95° F

Refrigeration capacity: Minimum 35TR at site conditions

Chiller max area: 2.42 sq. mtr to meet the existing space available

Chilled water leaving temperature: 44° F

Chilled water entering temperature: 54° F

Fouling factor (FPS): 0.0005 ft2.h.oF/Btu

Maximum power consumed at design conditions not greater than 1.16 in iKw/TR @ 100%

System minimum COP at 100% load : 3.0

System minimum IPLV : 4.0

Sea freight and transit insurance upto nearest Kolkata port for th above package.

Clearing the goods from the nearest Kolkata port including customs clearance, local

Make - Daikin / Trane/ Carrier/ York/Kehems/Voltas/Bluestar

EXPANSION TANK

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.

FLEXIBLE CONNECTIONS

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.

FLOW SWITCH

SITC of Flow switch with accessories as required.

ELECTRICAL PANELS

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.

Panel For 35 TR chiller. As per OEM recommended.

Starter panel with all required electrical accessories having 02 nos MCBs + 01 nos spare suitable for AHU operations of 15 KW.

AIR HANDLING UNITS

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 AHRI parameters can be considered while quoting: 1) An AHRI 1350 certified casing shall be used. 2) Deflection class shall be minimum CD4 3) Leakage class shall be minimum CL4 4) Thermal transmittance shall be minimum CT3 5) Thermal bridging shall be minimum CB3 6) For Eurovent AHUs, Eurovent certification shall be considered. Make: Systemair, Stulz, Trane, DRI, Flaktwood

Fan and Motor Programmable EC fans which can be operated as per varying load shall be prefered. AMCA certified direct driven backward curved fan with permanent magnet brushless DC motor will be considered for installation. Fan motor shall be VFD and direct driven 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. Filters 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 Six row deep cooling coil with extended inlet outlet connections of desired dew point having AHRI certification will be prefered. Cooling coil shall mounted on powder coated holding arrangement SS drain pan having thickness of atleast 20 gauge with 25 mm closed cell nitrile rubber insulation. Fin thickness shall be minimum of 0.15 mm. 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.

Safety standards: UL 1995, CSA C 22.2 No. 236-11, heating and cooling equipment. HRW media certification: DIN EN ISO 846 Rotor 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 points such as temperature & RH of fresh/supply and exhaust/return air, air quantity during change in ambient conditions for factory inspection. The heat wheel 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.

12000 CFM, ( 65 mm St. Pr, 6 Row CC )

INLINE FAN ( FOR TOILET Exhaust Air for COMMON TOILET Areas)

Supply, installation, testing and commissioning of Round / Cabinet type rectangular Inline fans with motor complete motor complete with TEFC Sq. Cage Induction motor suitable for 220 volts ± 10%, 50Hz ± 3 %, single phase A.C supply of class "F" insulation with , mountings accessories in all respect with wiring upto power supply point & of following capacities as per specification and tender drawing mentioned.

1000 cfm / 25mm St.Pr.

900 cfm / 25mm St.Pr.

700 cfm / 25mm St.Pr.

PLUMBING

G.I Condensate Drain Piping

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

40 mm dia NB

50 mm dia NB

Supplying & fixing of 18 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.

ELECTRICAL WORKS

POWER & CONTROL CABLING

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 standard.

4 C - 16 sqmm (COPPER - PVC - ARMOURED)

4 C - 25 sqmm (COPPER - PVC - ARMOURED)

4 C - 35 sqmm (COPPER - PVC - ARMOURED)

3C x 6 Sq. mm

3C x 4 Sq. mm

Earthing Strip / Wires.

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

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

SMOKE VENTILATION SYSTEM

SMOKE VENTILATION

FRESH AIR SUPPLY

Supply, erection, testing and commissioning of ceiling hunged Tube Axial flow fans with adjustable pitch blade , MS casing, cast aluminium alloy impeller complete with TEFC Sq. Cage Induction motor suitable for 415 volts ± 10%, 50Hz ± 3 %, 6 / 4 pole, three phase A.C supply of class "F" insulation and 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.

In Normal / Emergency Mode:

Air Qty. = 9000 CFM

Static Pressure = 30 mm Wg

Motor = Not exceed 2.2 Kw.

EXHAUST AIR

Supply, erection, testing and commissioning of ceiling hunged Tube Axial flow fans with adjustable pitch blade , MS casing, cast aluminium alloy impeller complete with TEFC Sq. Cage Induction motor suitable for 415 volts ± 10%, 50Hz ± 3 %, 6 / 4 pole, three phase A.C supply of class "H" insulation and 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.

In Normal / Emergency Mode:

Air Qty. = 9000 CFM

Static Pressure = 30 mm Wg

Motor = Not exceed 2.2 Kw.

SUB - PANELS FOR SMOKE VENTILATION

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.

For Axial Fan WITH (5.0 HP Fan Motor)

Controls & interlocking accessories as required.