WBPWD/SEHEC/SK/NIQ55/18-19/2nd

Amount

Air Cooled Screw Chiller

Supply, Positioning, Starting, Testing & Commsioning of AHRI / Eurovent /CRAA certified Air Cooled Screw Chiller of capacity stated below at operating condition mentioned below having single/multiple screw compressor driven by suitably rated hermetic / semi hermetic motor with all standard accessories. Air cooled condenser with factory coating blufins against corrosion, insulated flooded / Dx chiller, flow switch at chiller outlet, interconnecting insulated refrigerant piping, refrigerant & oil (first charged), micro processor based control panel, 1" deflection spring isolator of suitable capacity all mounted on MS baseplate. Motor shall be suitable for 415V ±10%, 50 Hz ± 5%, 3-Ph AC supply. Operating conditions are furnished below:

Minimum Refrigeration Capacity - 60 TR (Actual) at the following operating conition and AHRI condition (1 Working + 1 Stand By)

Refrigerant - 134 A / 407C

Chilled Water Inlet Temp - 14.5 ⁰C

Chilled Water Outlet Temp - 9 ⁰C

Fouling factor Evaporator & condenser as per ASHREE and AHRI

IPLV shall be as per latest BEE circular for ECBC buildings.

IPLV shall be as per latest BEE circular for ECBC buildings. Ambient Temperature - 40⁰C” to be considered.

IKW/TR at design condition shall be as specified by AHRI / GB standard

Required cush foot mounting arrangement

[Make - As per Approved Make]

SUB-HEAD D- PRIMARY CHILLED WATER PUMP

Supply, Installation, Testing and Commissioning of Back - Pullout Casing Chilled water pump set capable of delivering 180 USGPM of water . duly insulated with 32mm thik Nitrite Rubber , Each comprising of Suitable HP, TEFC Squirrel Cage Induction Motor with class "B" insulation, 1440 rpm synchronous speed, suitable for operatation on 415 ± 10% volts, 3 phase, 50 Hz A.C. supply. The Pump / Motor shall confirm to IE2 Standard and 81.4% Efficiency. 150 mm dia dial type pressure gauges for inlet & outlet, mounted on common MS base plate, complete as per specifications etc. as required. (1 Working + 1 Standby) , The motor shall have IP65, all weather proof, isolator with lockable arrangement. The item included suitable cush foot mounting arrangement with rubber flexible below. [Make - As per Approved Make]

SUB-HEAD G - AHU

FLOR MOUNTED AHU WITH SUITABLE VFD

SITC of factory built floor mounted chilled water double skin type horizontal/vertical air handling units made of 25 mm thick panels consisting of preplasticized G.I. casing of thickness 0.8mm outside layer and 0.8 mm inside layer with polyurethane foam (PUF) insulation factory injected between them by injection moulding machine, complete with blower section with blower suitable for static pressure as required, minimum 2 bend GSS/PVC eliminators,cooling coil section with aluminium finned copper tubes (tubes thickness not less than 0.5 mm) cooling coil of 6 row deep, filter section with 50 mm thick

synthetic pre-filter (90% down to 10 micron) and fine filter (95% down to 5 micron) belt drive package with TEFC drive motor of efficiency class IE3 suitable for 415 ± 10% V, 50Hz, 3 Phase AC supply suitably designed for varialbe frequency drive applications, drain connections, stainless steel (18G) drain pan with PUF insulation, 150 mm dia. dial type pressure gauges (2 Nos.)and industrial type thermometres (2 Nos.) at the inlet and outlet of coil, autopurge valve wherever required, necessary vibration isolation arrangement etc. complete as per specification and of following Capacities [Make - As per Approved Make]

70 MM total Static Pressure

125 MM total Static Pressure

CEILING SUSPENDED AHU

SITC of factory built ceiling suspended type double skinned chilled water air handling units fabricated out of extruded aluminium section with 0.6mm pre-plasticized / pre coated galvanised steel sheet outside & 0.6mm plane galvanised steel sheet inside with farward curved blower, blower section and blower motor TEFC type suitable for operation on 415 ± 10% V, 50Hz± 5% , 3 Phase AC supply, 6 row cooling coil made of Aluminium finned copper tube with coil section, pre filter section with non woven synthetic media of 10 micron particle size with an efficiency of 90% & fine filter (95% down to 5 micron). polished stainless steel drain pan made out of 22SWG sheet duly insulated complete with motor , direct / belt drive as mentioned below etc. without face and bypass dampers. All direct driven fan motor shall be sourced from fan manufacturer & factory fitted only.

The AHU panel shall be insulated with 23mm thick & 36 kg/m3 density PU foam. The motor & blower assembly shall be mounted on Aluminium extruded section only. The complete AHU shall conform to standard specification. The face velocity across cooling coil shall be limited to 152 MPM maximum. The supply blower motor shall be VFD operated including suitable VFD & their necessary control etc as required. [Make - As per Approved Make] The capacity of Air handlers shall be as follows :

1200 CFM 40MM Total Static Pressure

2400 CFM 40MM Total Static Pressure

3200 CFM 40MM Total Static Pressure

FAN COIL UNIT

SITC of Fan coil unit with controller package includes 2way Valve, Ball Valve with and without strainer for connections and temperature controller with linkages. [Make - As per Approved Make]

b) FCU 2 TR / 800 CFM

UVC EMITTER.

a) SITC of UVC EMITTER for the above AHU's for prevention of fungus in the chilled water cooling coils. The minimum UV intensity in the coils shall be greater than 1000 UW-SEC/CM2 for OTs. The unit shall be UL Listed (UL-1995) [Make - As per Approved Make]

b) SITC of UVC EMITTER for the above AHU's for prevention of fungus in the chilled water cooling coils. The minimum UV intensity in the coils shall be between 600 to 700 UW-SEC/CM2 for other than Ots. The unit shall be UL Listed (UL-1995) [Make - As per Approved Make]

SUB-HEAD H - CHILLED WATER PIPING SECTION [Make - As per Approved Make]

Supplying, laying/ fixing, testing and commissioning of following nominal sizes of chilled water piping inside the building (with necessary clamps, vibration isolators and fittings but excluding valves, strainers, gauges etc.) duly insulated with following closed cell elastometric nitrile rubber of minimum 45 Kg / m3 density, thermal conductivity 0.037 W/MK or better at 20 deg mean temperature class ‘O’ insulation applied by suitable adhesive complete including repairing of damage to building etc. as per specifications and as required complete in all respect. [ Note:-The Pipes of sizes 150 mm & below shall be M.S. ‘C’ class as per IS : 1239 and pipes size 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 from minimum 7mm thick MS sheet for pipes of 400 mm dia and above.

150 mm dia. (32 mm thick insulation)

125 mm dia. (32 mm thick insulation)

100 mm dia. (32 mm thick insulation)

80 mm dia. (32 mm thick insulation)

65 mm dia. (32 mm thick insulation)

50 mm dia. (32 mm thick insulation)

40 mm dia. (32 mm thick insulation)

32 mm dia. (19 mm thick insulation)

25 mm dia. (19 mm thick insulation)

SUB-HEAD H - CHILLED WATER PIPING VALVES & FITTINGS [Make - As per Approved Make]

BUTTERFLY VALVE (MANUAL) with C I body SS Disc, Nitrile Rubber Seal & O- Ring PN 16 pressure rating for chilled water/ hot heater circulation as specified

125 mm dia.

100 mm dia.

80 mm dia.

65 mm dia.

50 mm dia.

40 mm dia.

32 mm dia.

Ball Valve

BALANCING VALVE WITH BUILT IN MEASURING FACILITY with C I body flanged construction with EPDM coated disc with long pitch with protected out pipe insulation & PN 16 pressure rating for chilled / hot water circulation as specified.

125 mm dia

80 mm dia.

65 mm dia

50 mm dia.

40 mm dia

32 mm dia

Auto Air Vent with Ball Valve

NON - RETURN VALVE with duel plate of C I body SS plates vulcanized NBR seal flanged end & PN 16 pressure rating for chilled / hot water circulation including insulation as specified.

125 mm dia Each

Y - STRAINER of Ductile CI Body flanged ends with stainless steel strainer for chilled / hot water circulation including insulation as specified.

125 mm dia

S&F of water Flow switch

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

Providing & fixing in position the mercury in glass industrial type thermometres.

Supply, Installation, Testing and Commissioning of following sizes electronic, self-balancing, pressure independent type dynamic balancing valve. The actuator shall be capable of accepting upto 10V DC and upto 20 mA electric signal and shall provide similar transduced feedback output to control system. Maximum close off pressure shall not be less than 6 Bar for upto 50 mm valves and 7 Bar for 65 mm & above. Valves should have pressure rating of 25 Bar minimum.

50 mm dia.

40 mm dia.

32 mm dia.

25 mm dia.

Auto Air Vent

SUB - HEAD I - DUCT WORKS INCLD ALL ACESSORIES [Material Make - As per Approved Make]

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.

Supply, installation, testing and commissioning of Motorized (ON-OFF Type) duct mounted GI volume control damper with enthalpy sensor and necessary control wire (minimum 1.5 sq. mm) for integration within AHU room

Damper

Actuator

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

Supplying & fixing of powder coated extruded aluminium Return Air Grills with louvers but without volume control dampers complete as required.

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

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

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.

Fire damper

Actuator

Supplying & fixing of acoustic insulation inside ducting with 10mm thick open cell nitrile rubber (class O) of density 140Kg/cu.m-160 Kg/Cum insulation with bolts nuts GI washers etc as required.

Supply & fixing of underdeck insulation with 50mm thick TF quality Expanded polysterene slab.

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.

DUCT THERMAL INSULATION FOR DUCT FOR NON-AC ZONE

Supplying & fixing of Thermal insulation of the duct running in non AC Zone with 75 mm thick expanded polysterene finishised with with 12 mm thick sand cement plaster. Make - Beardsell/ Astha/ Thermowell

Supply and fixing of Opposed blade GI Duct Damper of 18 G GI sheet and frame.

Supplying, fixing, testing & commissioning of powder coated extruded aluminium section fresh air grill in AHU room with aluminium volume control dampers, bird screen etc complete as required.

a) 4.5 kw in 3 Banks

S & F of HEPA Filter with efficiency of 99.99% down to 0.3 microns of size 600 mm x 600 mm x 150 mm (Thk) as per actual site requirement for OT area and to accommodate inside the laminar bench chamber as per approved drawing.

SITC of Aluminium laminar bench with perforated sheet cover to accommodate inside HEPA filter bank along with necessary support as per standard of minium 6 ft X 8 ft dimension for OT Area as per approved drawing.

DRAIN PIPE FOR CHILLED WATER SYSTEM WITH INSULATION:-

SITC of Drain piping with GI B Class pipes with fittings duly insulated with 25 MM THICK "TF" qulaity (16 Kg/CuM density) EPS section, Vapour barrier and covered with sand, cement and plaster with GI chicken wire mesh along with necessary quantities of supports, flanges, bends, elbows, fittings, nutbolts,gaskets etc: [ Make - As per Approved Make]

a) 50 mm NB

b) 40 mm NB

Supply and installation of 1000 L HDPE Expansion Tank (Mk.Patton/Syntex) along with 1 No Float Valve and 3 Nos isolation valves for necessary connections including thermal insulation work by 75 mm thick Expanded Polystyrene covered with GI Chicken wire mesh, vapour barrier and 12 mm thick sand cement plaster cover[Make - As per Approved Make]

SITC of Inline fan for OT exhaust as per actual site requirement for successful performance. [Material Make - As per Approved Make]

a) Exhaust Fan of Capacity - 560 CFM 10 mm WC

ELECTRICAL PANEL [Material Make - As per Approved Make]

SITC of of LT, Cubicle Type, Floor Mounted , totally enclosed, fully compertmentalized electrical control panel suitable for operation at 415 Volt, 50 Hz, as per size, design & drawing to be approved by EIC. The panel board will be fabricated by CPRI approved panel maker as per detail specification below.

The general construction of the pannel will conform to IS 8623:93 as ammended uptodate. The Degree of IP protection for the enclosure will be IP-42.It will have multi tier arrangement, having necessary cable alley at both end, with rigid and self supporting structure fabricated with sufficient no. of channels & covered by 2mm thick CRCA sheet with base structure by 75x40x4mm channel.

All incoming, outgoing SFUs /MCCBs are to be housed in respective compartments with hinged and gasketted doors at the front. All the doors should have pannel lock arrangements in such a fashion that it cannot be unlocked unless the respective feeder remains OFF. The rear of the pannel should have gasketted wire net guard for ventillation and arrangement shall be made for easy access to each compatment by providing rear doors with locking system.

The pannel is to be properly gasketted to prevent the dust and vermin. All vertical and horizontal bus bar chamnbers are to be properly arranged and all electrical switches, busbars are to be fixed by MS nut-bolts on suitable hylam board / non - hygroscopic insulators of adequate size and dimensions. The outgoing feeder connections from respective switches are to be made at the rear side of the pannel by means of bus-bar/multicore copper cables, to be terminated on bolted type terminals for cable connections or bush insulators for bus connection

It will be powder coated after seven tank pretreatment process.2 Nos copper strip of size as per IS shall be fixed all around the panel and will be connected to 2 nos copper earth bus bar connected to incoming earth conductor.All tests should be made for the complete panel.The following 415 / 230 Volt Open Execution Type switches with fuses & accessories will be fixed in the panel.( THE INCOMING MCCB WILL BE OF LEGRAND MAKE AND OUTGOING SWITCHES WILL BE OF SIMENS MAKE,All the other accessories will be Legrand /Simens/L&T Make and as per manufacurers standard ].

INCOMING

(i) 400 Amps, 415 volts, 4 Pole MCCB [50 kA (Ics)] breaking capacity, with microprocessor release and rotary operating handle - 1 no.

BUSBAR

A. 500V, 600A capacity 4 Bar copper bar -1 Set

OUTGOING

A. 250 Amps, 415 volts, 4 Pole MCCB [50 kA (Ics)] breaking capacity, with microprocessor release and rotary operating handle - 3 no.

B. S&F 32 Amps, 415 volts, 4 Pole MCB with S&F 415V Fully Automatic Star-Delta stater of different rating incl necessary connection as follows:-

(a) For Chilled Water Pump (Make:- L&T, Cat No SS94364, Relay Range 14 - 23A) ---- 3 Nos

CONTROL & ACCESSORIES

ACCESSORIES

(i) Load Manager Class 1.0 accuracy Load Manager 3 Ph 4 W 240V 5A with RS 485 port ( For measurement of V, A, F, kW, kWh ) with 3 nos. 400 / 5 Amps bar primary type CTs 15 VA burden Class 1.0 accuracy, and 3 nos. back up 2 Amps HRC fuse or SPMCBs 10 kA breaking capacity - 1 Set.

(ii) 3 nos. phase Indication lamps LED type in RYB colours with toggle switches and 3 nos. of 2 Amps back up HRC fuse or SPMCBs 10 kA breaking capacity, 1 no. breaker ON indication lamp, fuses, circuits as per standard practice, auxiliary contacts for positive interlocking of the breakers as required - 1 Set.

VFD Bypass AHU Starter Panel for OT Area [Make - As per Approved Make]

Supply, installation, testing and commissioning of wall mounted cubical type LT distribution control panel, VFD Bypass Starter & exhaust fan control Electrical Panel Board fabricated from sheet steel comprising with following accessories incl. internal wiring earthing & painting. (For OT area).

a) MCCB suitable rating as incomer & outgoing per the ratings of AHU motor and Heater

b) DOL / SD starter as per HP ratings

c) VFD Bypass Starter as per HP ratings

d) Terminal block for power distribution.

e) Contactor, auxilary contractor, over load relay, with inbuilt single phasing protection.

f) Phase indicating lights and indicating light for ON , OFF & TRIP status.

h) Wiring for microswitch for stopping the fan when fire damper closes.

(i) Panel mounted digital Ammeter in 96x96 mm² (AE / HPL) [0 - 50 Amp.]

(j) Panel mounted digital Voltmeter in 96x96 mm² (AE / HPL) [0 - 500 V]

(k) One no DC Relay for sensing Fire Detection system.

(l) Danger Board.

VFD Bypass AHU Starter Panel [ Make - As per Approved Make]

Supply, installation, testing and commissioning of wall mounted cubical type LT distribution control panel & VFD Bypass Starter Electrical Panel Board fabricated from sheet steel comprising with following accessories incl. internal wiring earthing & painting. (For other areas).

a) MCCB suitable rating as incomer & outgoing per the ratings of AHU motor and Heater

b) DOL / SD starter as per HP ratings

c) VFD Bypass Starter as per HP ratings

d) Terminal block for power distribution.

e) Contactor, auxilary contractor, over load relay, with inbuilt single phasing protection.

f) Phase indicating lights and indicating light for ON , OFF & TRIP status.

h) Wiring for microswitch for stopping the fan when fire damper closes.

(i) Panel mounted digital Ammeter in 96x96 mm² (AE / HPL) [0 - 50 Amp.]

(j) Panel mounted digital Voltmeter in 96x96 mm² (AE / HPL) [0 - 500 V]

(k) One no DC Relay for sensing Fire Detection system.

(l) Danger Board.

Supplying of one number 1.1 KV Grade XLPE insulated and PVC sheathed aluminium conductor cable ( Armoured ) Al cable conforming to IS: 7098 / 1988 with its latest amendment of following size.[Make - As per Approved Make]

4Core 185 Sq. mm

3Core 16 Sq. mm

3Core 10 Sq. mm

3Core 6 Sq. mm

3Core 4 Sq. mm

3Core 2.5 Sq. mm

Supplying of one number 1.1 KV Grade XLPE insulated Cu cable [Make - As per Approved Make]

7 core 2.5 sq.mm

3 core 2.5 sq.mm

Laying of cable as below, through existing cable tray/surface on wall as per direction of the EIC.

4Core 185 Sq. mm

3Core 16 Sq. mm

3Core 10 Sq. mm

3Core 6 Sq. mm

3Core 4 Sq. mm

3Core 2.5 Sq. mm

7 core 2.5 sq.mm

3 core 2.5 sq.mm

Supplying and fixing compression type gland complete with brass gland, brass ring & rubber ring for dust & moisture-proof entry of XLPE/PVC armoured cables as below including finishing the end of following XLPE/PVC armoured cables by crimping method incl. supplying and fixing solderless socket (Dowels make), tapes, anticorrosive paste & jointing materials

4Core 185 Sq. mm

3Core 16 Sq. mm

3Core 10 Sq. mm

3Core 6 Sq. mm

3Core 4 Sq. mm

3Core 2.5 Sq. mm

7 core 2.5 sq.mm

3 core 2.5 sq.mm

Supplying & fixing earth busbar of galvanized (Hot Dip) MS flat 25 mm x 6 mm on wall as per GS

Connecting the equipments to earth busbar including S & F Solid GI (Hot Dip) wire of size as below as per GS

Supply & Fixing of perforated GI cable tray with perforation not more than 17.5% suspended from ceiling incl. S&F GI connector, 6mm dia MS suspender, bolts & nuts, steel fastener etc. as required of the following size. Incl. Al painting of MS support With S&F 25x25x3mm angle iron support

Supply & Fixing of perforated GI cable tray bend with perforation not more than 17.5% suspended from ceiling with two nos. suspenders & 25x25x3mm angle iron for supporting the cross member incl. S&F GI connector, 6mm dia MS suspender, bolts & nuts, steel fastener etc. as required of the following size. Incl. Al painting of MS support.

Supply & Fixing of perforated GI cable tray tee with perforation not more than 17.5% suspended from ceiling with two nos. suspenders & 25x25x3mm angle iron for supporting the cross member incl. S&F GI connector, 6mm dia MS suspender, bolts & nuts, steel fastener etc. as required of the following size. Incl. Al painting of MS support.

Supply & Fixing of perforated GI cable tray cross member with perforation not more than 17.5% suspended from ceiling with two nos. suspenders & 25x25x3mm angle iron for supporting the cross member incl. S&F GI connector, 6mm dia MS suspender, bolts & nuts, steel fastener etc. as required of the following size. Incl. Al painting of MS support.

Supply & Fixing of perforated GI cable tray reducer with perforation not more than 17.5% suspended from ceiling with two nos. suspenders & 25x25x3mm angle iron for supporting the reducer incl. S&F GI connector, 6mm dia MS suspender, bolts & nuts, steel fastener etc. as required of the following size. Incl. Al painting of MS support.

Terms and condition

The Agency must procure the materials from the Manufacturer / OEM or from their authorised sales channel so that the standard warranty / support of the Manufacturer / OEM becomes applicable to the products to be delivered and installed by them.

Documents that authenticates such procurement from the Manufacturer / OEM or from their authorized sales channel and standard warranty / support should be sent from the e-mail of the Manufacturer / OEM / authorized sales channel to the e-mail of Engineer-in-Charge and hard copy of it to be submitted during execution, of work/submission of bill.

If any refurbished material is supplied and installed, penal action will be taken as per existing rules

Defect Liability period 1 (One) Year

(Rates should be Quoted inclusive of all taxes & duities and L.W.C. @ 1% as applicable)

VOLTAS LIMITED