REPACEMENT OF BER CENTRALISED AIR CONDITIONING SYSTEM FOR ERS BLDG P178 AED AT INS HANSA GOA UNDER GE NW VASCO

Amount

Dismantling and removing the BER water cooled chilled complete of 3 x 45 TR capacity compressor, chilled & condenser water pump and all connecting water pipe lines , cooling tower, and ducting , electrical control panel etc and depositing to MES store yard complete all as specified and directed.

Supply, installation, testing and commissioning of ISEER certified, factory designed, pre-fabricated and floor-mounted twin scroll type water cooled inverter type seroled chillier Model No. XWC2YVS-052AR3 machine of at least 52 TR nominal capacity (with allowable tolerance of-2.5% on lower side), complete with hermetic scroll compressors having independent refrigerant circuits & automatic stepless capacity control, water-cooled S/T flooded type condenser, S/T horizontal DX type evaporator with MS shell and seamless copper tubes with elastomeric insulation, suitable numbers of hermetically sealed compressors along with necessary drive arrangement, lubrication system as per manufacturer's design required for smooth and trouble-free operation of the chillier package, common base frame, interconnected copper refrigerant piping along with elastomeric insulation, fittings, valves, expansion valves and accessories to interconnect compressor, condenser, chillier and expansion valve, microprocessor based control panel comprising of controls including sensors and equipped with a keyboard, LCD touchscreen access input system, protection and monitoring devices to perform control functions , wiring, vibration isolators, gauge panel, automatic safety controls, flow switch at evaporator and condenser and ozone friendly, CFC-free refrigerant R410A / 407C all complete all as specified and directed.

The chillier shall conform to the following requirements / specifications: [i] Chilled water inlet/outlet temperature: 12/7 ˚C [ii] Evaporator fouling factor: 0.00010 ⁰Fft²hr/Btu [iii] Evaporator side pressure drop: 3.5 m of H2O (maximum) [iv] Condenser water inlet/outlet temperature: 32/36 ˚C [v] Condenser fouling factor: 0.00025 ⁰Fft²hr/Btu [vi] Condenser side pressure drop: 6 m of H2O (maximum) [vii] Minimum COP @ 100% load: 4.98 [ix] Refrigerant (Ozone friendly type): R410A / 407C [x] Test standard: ARI 550 / 590

NOTES: [i] The quoted rate shall be in accordance with site parameters, victaulic coupling and system integrator capable of giving industry standard (Modbus/BACnet) output to BMS for critical parameters. [ii] Mapping shall be required for all critical points displayed on the chillier control panel. The chillier shall be BMS compatible and shall have RS485 / RS232 serial communication protocol. [iii] The unit shall be suitable for 3- Phase, 415 V ± 10%, 50 Hz AC electric supply, with a built-in microprocessor based control panel. [iv] Initial / first charge of refrigerant gas & compressor shall be deemed included in the quoted rate. [v] Necessary civil work viz. foundation for placement of chillers, etc. shall be deemed included in the scope of work.

CHILLED WATER CIRCULATION PUMP (2W + 1S):: Supply, installation, testing and commissioning of monoblock, self-priming, single-stage centrifugal pump, capable of 8.50 LPS discharge at 26 MWC head, having cast iron casing, enclosed type dynamically balanced cast iron impeller, carbon steel pump shaft, gland packed sealing, deep groove ball bearings, etc. with TEFC squirrel cage induction motor having class 'B' insulation, IE3 efficiency, conforming to IS 12615: 2018 and suitable for operation on 3-Ph, 415 V±10%, 50 Hz AC supply, base plate, mounting channel frame, accessories and fittings, viz. pressure gauges, thermometers, drains, coupling, coupling guard, vibration isolation arrangement by means of spring / rubber type mounting duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories complete all as specified and directed. NOTES:[i] Necessary civil work viz. foundation for placement of pump, mounting of star/delta starter panel and pump accessories shall be covered in the scope of work.

FRP INDUCED DRAUGHT COOLING TOWER : Supply, installation, testing and commissioning of FRP rectanguler shape, vertical, induced draught counter flow cooling tower of (125 TR) size with uniform water distribution and optimal heat transfer, having tough fiberglass reinforced plastic (FRP) casing of sufficient structural strength to withstand vibrations and wind velocity upto 60 m/s, FRP basin, rigid honeycomb type PVC fill of suitable thickness, SS sprinklers and non-clogging sprinkler pipes, FRP drift eliminator, energy efficient induced draught axial type fans with factory set and dynamically balanced blades pitch, IE3 TEFC squirrel cage induction motor, suitable for operation on 3- Ph, 415 V, 50 Hz AC supply with IP 65 protection for enclosure, conforming to IS 12615: 2018, inlet, outlet, drain and over-flow nozzle connections, etc. complete with accessories as specified and directed. NOTES: [i] Necessary civil work viz. foundation, supporting structure, etc. for placement of cooling tower shall be deemed to be included in the scope of work.

CONDENSER WATER PUMP (2W + 1S): Supply, installation, testing and commissioning of monoblock, self-priming, single-stage centrifugal pump, capable of 13.12 LPS discharge at 18 MWC head, having cast iron casing, enclosed type dynamically balanced cast iron impeller, carbon steel pump shaft, gland packed sealing, deep groove ball bearings, etc. with TEFC squirrel cage induction motor having class 'B' insulation, IE3 efficiency, conforming to IS 12615: 2018 and suitable for operation on 3-Ph, 415 V±10%, 50 Hz AC supply, base plate, mounting channel frame, accessories and fittings, viz. pressure gauges, thermometers, drains, coupling, coupling guard, vibration isolation arrangement by means of spring / rubber type mounting complete all as specified and directed. NOTES: [i] Necessary civil work viz. foundation, supporting structure, etc. for placement of cooling tower shall be deemed to be included in the scope of work.

EXPANSION TANK FOR CHILLED WATER PIPING: S & F SS- 304 closed expansion tank of 500 litre capacity with pressure rating to suit the system pressure and sized adequately to compensate for water expansion due to operating temperature variations, conforming to IS: 2825- 1969 for 'non-fired pressure vessels' complete with inter-connection piping, non-return valve, safety relief valve and pressure gauge, insulated with 50 mm thick elastomeric insulation and cladded with 26 gauge aluminium complete with accessories as specified and directed by the engineer-in-charge.

HDPE MAKE-UP WATER TANK FOR COOLING TOWER: S & F multilayered HDPE make-up water tank of 10000 litre capacity made up of 100% virgin material, white outer layer, threaded lid, extra insert lid for protection against algae formation complete with inter-connection piping and non-return valve etc including tank to placed on suitable staging complete all as specified and directed.

HVAC PANEL: Supply, installation, commissioning and testing of factory made, CPRI type tested, outdoor, cubical compartmental type "HVAC Panel" of suitable size, conforming to IEC 61439-1 &2, IEC 61641, having both sides openable with hinged double doors & locking arrangement and IP 42 protection made out of 2 mm thick CRCA sheet, supported and fixed on structural frame of angle iron of suitable size, including earthing stud, labeling, painting to all internal & external exposed steel surfaces with powder coating paint (7 tank process), duly fixed in ground with PCC foundation (1:2:4) type B1, with danger notice plate of 1.6 mm thick mild steel sheet, vitreous enameled (white) with letters figures and conventional skull and bones in signal red colour, suitable for 3- Phase 4 Wire system, 500 V grade with necessary wiring, PVC sheathed stranded copper conductor of appropriate length & size, including fixing lugs, bolts, screws etc. complete with accessories as specified and directed .

The HVAC Panel shall comprise of the following: Busbar Chamber: [i] 01 Set (3L + N) of copper busbar of rated capacity 400 A, covered with PVC insulated sleeves including insulator, nuts, bolts, etc. with complete connection

Incoming: [i] 400 A, 415 V, Ics = 100% Icu = 36 kA, 50 Hz FP MCCB, conforming to IEC 60947-2, having microprocessor based trip unit, adjustable overload setting (0.7 - 1 X In), adjustable short-circuit setting (5 - 10 X Ir), adjustable neutral protection (N, N/2, OFF), front indication LEDs (Ready, Overload and pre-alarm & Overload), etc.- 01 Nos. [ii] Cl 1.0 multi-function meter capable of measuring V, A, F, PF, W/VA, Wh/VAh, Runhrs. Onhrs & interupts- 01 Nos. [iii] LED phase indicators (Red, Yellow, Blue)- 01 Set

Outgoing: [i] 125 A, 415 V, Ics = Icu = 16 kA, conforming to IEC 60947- 2, 50 Hz, FP MCCB with adjustable thermal settings & fixed magnetic settings with compression lug connectors and thermal magnetic trip unit (TMD)- 03 Nos. [for chillers] [ii] 63 A, 415 V, Ics = Icu = 16 kA, conforming to IEC 60947- 2, 50 Hz, FP MCCB, 25kA - 02 Nos. [for AHUs] [iii] 32 A, 415 V, Ics = Icu = 16 kA, conforming to IEC 60947- 2, 50 Hz, FP MCB (C-Curve)- 08 Nos. [for chilled water supply pump, condenser water supply pump & cooling tower] [iv] Auomatic DOL starter for chilled water circulation pump [5 HP]-3Nos [v] Auomatic DOL starter for condenser water pump [5 HP]-3Nos [vi] Auomatic DOL starter for cooling tower fan motor [2 HP]-2Nos [vii] LED phase indicators (Red, Yellow, Blue)- 13 Set [viii] Cl 1.0 multi-function meter capable of measuring V, A, F, PF, W/VA, Wh/VAh, Runhrs. Onhrs & interupts- 13 Nos.

NOTES: [i] The panel shall be completely Ethernet communication ready to communicate with Energy Management System & shall be Web based application in-built. [ii] The Panel shall be with wireless energy sensor on incomer and outgoing feeders for monitoring (V, I, P, PF, Energy), voltage loss alarm, Unbalance in phases. Same shall be communicated through Ethernet communication gateway to centralised Energy Monitoring System.

POWER CABLES: M & L for ISI marked 1.1 kV grade aluminium conductor, XLPE insulated armoured cables, conforming to IS: 7098 (Part 1)- 1988 having stranded aluminium compact shaped conductor as per Cl. 2, IS: 8130- 1984, PVC inner sheath, single armouring of galvanized steel strip/wire and PVC Type ST- 2 outer sheath conforming to IS: 5831- 1984, including termination complete as specified and directed.

(a) 4 core, 10 mm² (For Pumps)

(b) 3.5 core, 35 mm² (For APFC Panel)

(c) 3.5 core, 70 mm² (For AHUs)

M & L for 1.1 kV grade, 3.5 core, 50 mm² copper conductor, XLPE insulated armoured cable conforming to IS 7098 (Part 1): 1988, having stranded copper compact shaped conductors as per Cl. 2 of IS 8130: 1984, PVC inner sheath, single armouring of galvanised steel strip/wire and PVC Type ST-2 outer sheath conforming to IS 5831: 1984, including necessary clamping / dressing with cable ties and termination complete all as specified and directed by engineer-in-charge.

M & L for earthing complete with galvanized steel earth plate electrode of 60 cm x 60 cm x 6 mm size, buried directly in ground (earth pit not less than 2.25 m deep below ground level) with top edge of the plate not less than 1.5 m below normal ground level, connected to GI wire of 4.0 mm diameter as earth lead, by means of bolts, buts, check nuts and washers of galvanised iron or steel, galvanized iron pipe of 40 mm diameter, connected to earthing test point, all as shown in electrical plate No. 5 connected to earthing test point all as specified or indicated including testing on completion and including excavation, earthwork, PCC earth pit of dimensions 550 mm X 550 mm (outer) and 300 mm X 300 mm (inner) and 250 mm deep, with a 10 mm thick CI cover, hinged to CI frame on ground level, GI watering pipe, funnel, etc. complete as specified and directed by the engineer-in-charge. Notes: (i) The cost of GI earth continuity conductor with GI pipe 40mm medium grade upto 7.5m is deemed to be included in r/o above item (ii) The earth chamber to be constructed 0.5m from edge of earth pit with necessary watering arrangement. The cost for the same is deemed to be included in above item

M & L for earth contuinity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required GI wire of 4.0 mm diameter complete all as specified and directed.

CONDENSER WATER PIPING: MS ERW CLASS- C PIPE : Supply, laying / fixing, testing and commissioning of condenser water piping including necessary fittings viz. bends, tees, reducers, flanges, air purge valves, drain valves, structural support, necessary clamps, vibration isolators, etc. including painting and supporting / fixing the pipe in excavated trenches or on floor / wall / ceiling with clamps, hangers, angles, channels (using anchor fastners) with necessary accessories complete all as specified and directed. NOTES: [i] The pipe size 150 mm NB & below shall be MS 'C' class as per IS 1239 (Part- 1): 2004 & IS 1239 (Part- 2): 2011. [ii] The pipe size above 150 mm NB shall be welded black steel pipe heavy class as per IS 3589: 2001. [iii] Minimum thickness of MS sheet for pipe size above 150 mm NB and up to 350 mm NB shall be 6.35 mm and it shall be 7 mm for pipe size 400 mm NB and above.

(a) 150 mm NB

(b) 100 mm NB

Y- STRAINER: Supply, installation, testing and commissioning of 100 mm NB cast steel bolted cover Y-type strainer with MS body conforming to ASTM A- 216 Gr. WCB, AISI 304 screen with 32 mm diameter perforation, 16 kg/cm2 body test pressure & 16 kg/cm2 maximum working pressure and standard flange end conforming to BS 10 Table F / Class-150 with necessary accessories complete all as specified and directed.

BUTTERFLY VALVE: Suply, installation, testing and commissioning of wafer type PN 1.6 rated short pattern CI butterfly valve having Gr. FG-200 CI body conforming to IS 210: 2009, seat having EPDM rubber lining, CF 8 stainless steel disc, AISI- 410 stainless steel stem, 2.4 MPa body test pressure & 1.6 MPa seat test pressure and standard flange end conforming to BS 10 Table D/E & ANSI B 16.1 CI- 125 with necessary accessories complete all as specified and directed.

(a) 150 mm NB

(b) 100 mm NB

NON-RETURN VALVE: Suply, installation, testing and commissioning of 100 mm NB wafer type PN 1.6 rated dual check type valve (NRV), designed & tested as per IS 5312 (Part- 2): 1986, suitable to handle clear water having turbidity up to 5000 PPM, having CI body, door and diaphram, leaded tin bronze seat rings and flange drilling standard end connection, etc. with other necessary accessories complete all as specified and directed.

BALANCING VALVE: Supply, installation, testing and commissioning of precise balancing, double regulation type cast iron balancing valve having FG 200 cast iron body conforming to IS 210: 2009, copper alloy trim, stainless steel 2 Cr. 13 stem, 2.4 MPa body test pressure & 1.6 MPa maximum working pressure and standard flange ends with necessary accessories complete all as specified and directed.

(a) 100 mm NB

CHILLED WATER PIPING: MS ERW CLASS- C PIPE WITH INSULATION: Supply, laying / fixing, testing and commissioning of chilled water circulation piping including necessary fittings viz. bends, tees, reducers, flanges, air purge valves, drain valves, structural support, necessary clamps, vibration isolators, etc. including painting and supporting / fixing the pipe in excavated trenches or on floor / wall / ceiling with clamps, hangers, angles, channels (using anchor fastners) with necessary accessories duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness but not less than 25mm laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories complete all as specified and directed. NOTES: [i] The pipe size 150 mm NB & below shall be MS 'C' class as per IS 1239 (Part- 1): 2004 & IS 1239 (Part- 2): 2011. [ii] The pipe size above 150 mm NB shall be welded black steel pipe heavy class as per IS 3589: 2001. [iii] Minimum thickness of MS sheet for pipe size above 150 mm NB and up to 350 mm NB shall be 6.35 mm and it shall be 7 mm for pipe size 400 mm NB and above.

Y- STRAINER: Supply, installation, testing and commissioning of 80mm NB cast steel bolted cover Y-type strainer with MS body conforming to ASTM A- 216 Gr. WCB, AISI 304 screen with 3 mm diameter perforation, 16 kg/cm2 body test pressure & 16 kg/cm2 maximum working pressure and standard flange end conforming to BS 10 Table F / Class-150 duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness but not less than 20mm laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories complete all as specified and directed .

BUTTERFLY VALVE: Suply, installation, testing and commissioning of 80mm NB wafer type PN 1.6 rated short pattern CI butterfly valve having Gr. FG-200 CI body conforming to IS 210: 2009, seat having EPDM rubber lining, CF 8 stainless steel disc, AISI- 410 stainless steel stem, 2.4 MPa body test pressure & 1.6 MPa seat test pressure and standard flange end conforming to BS 10 Table D/E & ANSI B 16.1 CI- 125 duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories complete all as specified and directed.

NON-RETURN VALVE: Suply, installation, testing and commissioning of 80 mm NB wafer type PN 1.6 rated dual check typevalve (NRV), designed & tested as per IS 5312 (Part- 2): 1986, suitable to handle clear water having turbidity up to 5000 PPM, having CI body, door and diaphram, leaded tin bronze seat rings and flange drilling standard end connection, etc. duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories complete all as specified and directed.

BALANCING VALVE: Supply, installation, testing and commissioning of 80 mm NB precise balancing, double regulation type cast iron balancing valve having FG 200 cast iron body conforming to IS 210: 2009, copper alloy trim, stainless steel 2 Cr. 13 stem, 2.4 MPa body test pressure & 1.6 MPa maximum working pressure and standard flange ends duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories complete all as specified and directed.

3-WAY TEMPERATURE CONTROL VALVE: Supply, installation, testing and commissioning of 80 mm NB electronic, self-balancing, pressure independent type dynamic balancing valve rated for minimum 25 bar working pressure with integrated 3-way modualating control valves in a single body and actuator capable of accepting upto 10 V DC and up to 20 mA electric signal and provide similar transduced feedback output to control system duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories complete all as specified and directed.

NOTES:: [i] Maximum close off pressure shall not be less than 6 bar for upto 50 mm valves. [ii] Maximum close off pressure shall not be less than 7 bar for 65 mm & above.

BALL VALVE: S & F of CL 150 # rated 20 mm NB ball valve, designed & manufactured as per IS: 9890 (1981) and tested as per BS 6755 Part- I, having floating type three piece design, CS body, SS- 304 ball, PTFE seal/packing/gasket, CS fastners and lever and screwed/socket weld end connection, etc. duly insulated with FM approved highly- flexible, closed-cell thermal insulation of elastomeric foam based on synthetic rubber (NBR) of apppropriate thickness laminated with 12 micron aluminium foil facing with reinforced glass scrim along with adhesives and other necessary accessories complete all as specified and directed.

DRAIN & INSTRUMENTATION PIPING: MS ERW CLASS- C PIPE : Supply, laying / fixing, testing and commissioning of drain piping including necessary fittings viz. bends, tees, reducers, flanges, air purge valves, drain valves, structural support, necessary clamps, vibration isolators, etc. including painting and supporting / fixing the pipe on floor / wall / ceiling with clamps, hangers, angles, channels (using anchor fastners) with necessary accessories complete all as specified and directed.

AUTO AIR-VENT: Supply, installation, testing and commissioning of automatic air-vent valve with 20 mm end connections, brass OT 58 body and cover, polyacetal lever, high density expanded polyethylene float, EPDM rubber plug, stainless steel spring, polyamide cap etc. suitable for maximum operating pressure of 16 bar and maximum operating temperature 115 °C respectively, installed on all high points in the water piping system to automatically remove the trapped air complete all as specified and directed.

TEMPERATURE GAUGE: S & F of 6" dual scale (°F/°C), lower mount (radial), bimetal thermometer having 0.5 NPT process connection, Grade A accuracy class as per ASME B40.200, stem diameter 6.35 mm, laminated safety glass window, stainless steel 304 case, steam, process connection & joint, aluminium dial & pointer, IP67 protection, scale range 0- 60 °C complete all as specified and directed.

PRESSURE GAUGE: S & F of 4" bourdon tube pressure gauge conforming to EN 837-1, having copper alloy process connection & pressure element, plastic black pointer & case, plastic crystal-clear window, snap-fitted in case, accuracy class 2.5, scale range 0- 25 bar complete all as specified and directed.

AIR DISTRIBUTION: DOUBLE SKIN AIR HANDLING UNIT: Supply, installation, testing and commissioning of double-skin type horizontal, floor-mounted, top / side discharge air handling unit capable of delivering 22000 CFM air at 80mm W.G. static pressure using gaskets and self-adhesive tapes and 0.6 mm thick pre-coated outer skin and 0.6 mm thick GI inner skin, 25±2 mm thick double skin panel with pressure injected CFC & HCFC free PUF having 'k' value of 0.02 W/°C/m & density 40 kg/m³, AMCA certified energy efficient plug fans with backward curved impellers for high static pressure mounted on aluminium extruded siderail base frame, EU4 pre-filter (shall be mounted on a common frame), combination of 6/8 rows deep chilled water coils with anti-corrosion aluminium fins, suitable high efficiency (IE3) TEFC squirrel cage induction motor, electric step heater, PVC/nylon hinges & handles, view port and marine lamp, limit switch, SS-304 drain pan, vibration isolators/rubber pads (minimum 1" thick) inspection windows / doors, mixing box and supply / return / fresh air openings fitted with aluminium volume control dampers complete all as specified and directed.

The AHU shall comprise of the following: [a] Suitable SISW backward curved plug fan with VFD, dynamically balanced, with AMCA certified blower [b] Foot mounted (B3 construction) 3-Phase squirrel cage induction motor 415 V ± 10%, 50 Hz ± 5 %, combined variation ±10%, insulation class F, (for Blower of AHU) of 11 kW capacity or as per requirement, 22000 CFM with temperature rise limited to class B, degree of protection IP 55, duty 51, ambiant temperature 45 ºC, conforming to IS 12615: 2011, IS/IEC 60079-1: 2007, IS 3682: 1966 gas group II A, II B [c] Flexible connetion made with airtight ASTM E84 (Class I) polyester fire retardant cloth riveted on periphery of cloth with extruded aluminium 'L' angle flange as per fan size at discharge duct/plenum [d] A wetted type or viscous type & Washable type of 'EU4' filter (pre-filter, efficiency 90% down to 10 micron)

[e] 6 / 8 rows deep chilled water cooling coil section with 0.15 mm thick copper fins and 0.36 mm diameter copper tubes tested on 21 kg/cm², with SS sandwiched drain tray, etc. (a 350 mm service section between eliminator and heater is required) [f] Condensate drain pan fabricated from 18 gauge SS 304, powder coated and insulated with elastomeric insulation of suitable thickness [g] Heater banks of suitable configuration consisting of strip heaters along with power and control wiring, electric starters, air stat, humidistat and any other control require to operate the heater bank and safety device. [h] AHU panel made out of 2.00 mm thick mild steel CRCA sheet, duly powder coated in compartamentalised construction with incomer and outgoing feeders for AHU motor, 3-way valve actuator motor, fire damper actuator motor, etc. complete with required relays, timers, contactors, PT, push buttons, switches, internal wiring, etc.

NOTES:[i] The price of other necessary control equipment is deemed included in the quoted rate. [ii] Necessary civil work viz. foundation for placement of AHU, mounting of variable frequency drive (VFD) panel, construction of opening(s) for fresh/exhaust air etc. shall be covered in the scope of work. [iii] A spare motor (specified in [b]), which will be measured and paid for separately, to be procured and placed in AHU room.

FIRE DAMPER: Supply, installation, testing and commissioning of fire damper, at least of 90 minutes fire-rating, spring activated on melting of fusible link having melting point 67.13° C complete with smoke detector / thermister, fusible link etc. and actuator as required for operation, located in the SA / RA ducts, at all fire rated crossoevers (shafts, walls, etc.). along with control panel (located in such a way that the reset can easily be done), interlocked with the building management system for the fire detection or HVAC to trip / close in the event of fire/smoke in the respective zone and tested as per ULL- 555 and certified by CBRI complete all as specified and directed The fire dampers shall meet the following criteria: [a] Bare fire dampers with 150 mm sleeve [b] Control panel actuator, including electrical spring type actuator, remote indication of the fire damper position. [c] Interconnection wire for the fire detection & alarm system with the AHU and the smoke dampers [d] Sealing any openings around the sleeve of the fire dampers with approved fire sealant as per the specification & recommandations of the manufacturer.

Motorized, spring return type, combination fire and smoke damper

Control panel actuator, including electrical spring type actuator, remote indication of the fire damper position.

GALVANIZED STEEL SHEET DUCTING- Supply, installation, balancing and commissioning of factory fabricated galvanized steel sheet metal (G.S.S.) round / rectangular TDF ducting of following sheet thickness having zinc coating of 120 g/m² total on both sides and complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, volume control dampers, hangers, supports, etc. as per approved drawings and conforming to the latest edition of IS 655: 2006 & HVAC Duct Construction Standards - Metal and Flexible of SMACNA along with required scaffolding work to install the ducts at site complete all as specified and directed.

AIR TERMINALS: S & F of supply / return / exhaust air diffusers / grilles / louvers of powder coated aluminium volume control dampers with anti smudge ring & removable core complete all as specified and directed.

THERMAL INSULATION: Supplying and fixing 25 mm thick aluminium foil faced resin bonded fibre glass insulation (on duct ) of density 32 kg/cu.m with self adhesive tape complete as per specifications and as required.

Providing and applying of acoustic insulation for air ducts with 12 mm thick, fiber glass rigid board and covered with 28 SWG perforated aluminium sheets complete.

CIVIL WORKS: Excavation in trenches/foundation not exceeding 1.5 m wide and not exceeding 1.50 m in depth for laying of cables, etc. and getting out in soft/loose soil all complete as specified and directed.

BRITE INDUSTRIES

M/S J J ENTERPRISES

somnath engineering corporation