PROVISION OF 2 X 10 TR PRECISION AIR CONDITIONERS WITH ACCESSORIES FOR SERVER ROOM IPC ALONGWITH POWER WIRING AT HAPPY VALLEY SHILLONG

Amount

Supply, installation, testing and commissioning of floor mounted high performance industrial grade Precision Air Conditioning system of capacity 10 TR with and including the following: - (i) Temperature control: Conditioned server room temperature should be within the range of 18 to 27 degree centigrade DB temperature and capable to maintain any temperature set within the range with + 1% tolerance. (ii) RH control: Conditioned server room relative humidity should be within the range of 40% to 60% and capable to maintain any RH set within the range with + 5% tolerance. (iii) Filtration: 95% down to 5 micron (iv) Operational Hours: 24 x 7 x 365 (iv) Refrigerant: Non CFC (R-410a) (v) Fan: High efficiency IP 54 Electronically Commuted (EC) Fan statically and dynamically balanced with self-lubricating bearings.Should have continuous speed regulation, low noise and corrosion resistant blades. (vi) Expansion Valve: Thermostatic (vii) Controller: Microprocessor based LCD display with corded remote. Controller should suitable for setting and monitoring of (a) Room air temperature, (b) Temperature set-point, (c) Temperature band, (d) Humidity, (e) Humidity set-point, (f) Humidity band. It should display/ indicate cooling and heating modes. (viii) Compressor: Fully hermetic digital scroll compressor with variable capacity (ix) Airflow direction: Downthrow discharge and top return (x) Condenser: Air cooled condensor with outlet service valve, safety valve, filter drier, moisture indicating sight glass, liquid line solenoid valve, expansion valve directly controlled by unit microprocessor for highest energy efficiency (xi) Evaporator: DX cooling Copper tube evaporator coil mechanically bonded to hydrophilic painted aluminium fins with stainless steel condensate drain pan. (xii) Humidifier: Infrared humidifier (suitable for use with water of varying degrees of hardness) with water inlet valve, maximum water level sensor

(xiv) Indicators: LED lamp visual indicators in different colours for Power ON (Yellow), Unit ON (Green) and Warning/ Alarm activated (Red) (xv) Refrigerant piping: Required refrigerant copper piping (suction and discharge) as per site condition (approx distance from outdoor unit to Indoor unit is 10 RM) shall be provided and the cost thereof deemed to be included in the quoted rate. The refrigerant pipe should have (a) expansion valve with pressure equalisation, (b) removable liquid line drier/ filter, (c) liquid line sight glass with moisture indicator, (d) hand shut off valves (xvi) Air Quantity: 500-600 CFM/ TR (xvii) Heating/ reheating: Rigid design crankcase heaters with ON-OFF control type protected by MCBs of suitable rating (xviii) Body: The indoor cabinet should be elegant metal body with dimensions not more than 900 mm (width) x 900 mm (depth) x 2000 mm (height). The fan section shall be double skinned and side panels should be insulated with glasswool insulation 10-25 mm thick with density 30-40kg/cum. (xix) Cooling circuits: Each circuit shall be equipped with pre-set high pressure (HP) switch and low pressure (LP) transducer for protection against high condensing and low evaporating temperatures. The HP switch shall be equipped with a manual reset. There should be moisture indicating sight glasses and liquid line solenoid valves for each circuit and mounted in a manner to be visible from service window and accessible from frontal door opening. (xx) Safety Interlocks: Operation of heaters & humidifiers shall be possible only when blower fan is in operation. Fire detection signal from fire detector system shall be able to switch off the package unit operation in event of fire in conditioned space. (xxi) Make/ Model: Model No PX033 of make: VERTIV or equivalent in make: Stulz/ Schneider as approved by GE

Note: - (i) The cost of foundation and fixing arrangements for indoor and outdoor units shall be as recommended by the manufacturer and cost thereof deemed to be included in the quoted rate. The interconnecting refrigerant pipes/ electric cables are also deemed to be included in the quoted rate. (ii) Any accessories not mentioned above but forming essential part of standard module of manufacturer deemed to be included in the quoted rate (iii) Onsite installation and testing should be carried out by rep of OEM in the presence of Engr-in-charge & representative of the accepting officer. (iv) The OEM preferably should have its branch in north-east region of India to get better support for troubleshooting/ maintenance in future. (iii) The specification and GA drawing of the system as submitted by the OEM should be got approved by GE before placing order to the manufacturer (iv) Pre-commissioning test shall be carried out by representative of accepting officer and all necessary T&P for testing should be arranged by the bidder. Cost thereof deemed to be included in the quoted rate. (v) Contractor will submit original purchase vouchers and manufacturer's test certificate to GE before payment of RAR.

M & L for raised flooring with tiles 600 mm x 600 mm with and including following: - (i) Tiles: Floor tiles should be high pressure anti-static fire proof laminated steel frame filled with compressed concrete. Top and bottom sheet should be high pressurised manufactured out of GI sheet with powder coat epoxy paint for rust protection. Dimension of the tiles should be 600 mm x 600 mm with thickness 33-35 mm. Tiles should be zinc whisker free for better anti-static property & shall be measured & paid seperately.

(ii) Pedestal: - The pedestals should be made out of steel with main bolt/ pipe with outer diameter 25 mm both end threaded. The bottom plate should not be less than 100 mm x 100 mm with 2.5 mm thickness. The top plate should not be less than 75 mm x 75 mm with 3.5 mm thickness. The height should be adjustable 300 mm to 600 mm. The tenderer should visit the site before quoting rate in case the tenderer want to confirm the exact height. Suitable screws should be provided/ fixed to secure the bottom plate with floors and top plate with grid formed by stringers (iii) Stringers: The tiles should be fixed on grid formed by stringers made out of steel with dimension 21 mm x 30 mm x 570 mm (approx) with thickness 0.8 mm. It should be seamless rectangular shaped with holes at suitable distance. (iv) The entire raised floor should be capable to bear uniformly distributed load (UDL) of 1000 kg/ sqm and point load (PL) of 450 kg/ sqm

M & L for perforated tiles as per OEM recommendations for air flow of size 600 mm x 600 mm suitable to get fixed on the raised floor described in Ser No 2 above complete all as specified and directed.

Excavation in trenches in soft/loose soil n exc 1.5 metre wide and not exc 1.5 metre deep and getting out including forming bottom surface for laying HT cable, foundations etc complete all as specified and directed.

Returning filling in including spreading levelling watering and well ramming in layer not exceeding 25 cm thick complete all as specified and directed.

Removing excavated material n.exc 50 m and depositing where directed at a level n exc 1.5 metre above the starting point complete all as specified and directed

Supply and laying dry sand cushioning for UG cable protection in trenches with fine river sand 8 cm before laying cable and 15 cm after laying the cable gently punned down to 10 cm on top of the cable complete all as specified and directed [Note: - The punned down thickness will be measured for payment].

M&L for brick protection cover to underground cable with sub-class ‘B’ old size over burnt bricks laid dry and flat across the axis of cable, abutting each other with gaps between adjacent bricks not exceeding 10mm complete all as specified & directed.

M & L for galvanised tubing light grade laid in trenches or fixed to wall or laid under road in any position with necessary clamp nut and bolt etc of 80mm bore size complete all as specified and directed.

Supply, install, testing and commissioning XLPE insulated armoured heavy duty electric cable with aluminium conductor, 1100 volts grade, cross sectional area 50 Sqmm, 3.5 core complete all as specified and directed.

Supply, install, testing and commissioning of LT PANEL, TPN 415 Volts, 50 Hz, indoor cubical type floor mounted CPRI approved factory made, double door dust and vermin proof, fabricated out of CRCA sheet not less than 2.00 mm thick with 2mm thick for internal compartment duly powder coated fixed on angle iron pedestal made out of 50x50x6 mm with cable chamber for individual feeders for incomming and outgoing connections, the panel board shall be provided with proper ventillation including suitable size of cable alley copper bus bar suitable for carrying of current 200 Amps with suitable connections from MCCB out going to main bus bar shall be carried out with TPN copper bus bars of suitable rating and connections from main bus bar to out going MCCB's (intake point) will be carried out with TPN copper bus bar as per MCCB rating duly insulated and colour coded heat shrinkable sleeve and shall be rigidly mounted on suitable size of bridge insulator including necessary PCC foundation and fixed with suitable nut, bolts, washers etc to the pedestal all as specified and directed comprising of the following :- (a) MCCB 125 Amps 4 Pole 50 Hz 415 V rupturing capacity 25 KA - 2 Nos (Incomer). (b) Onload Changeover switch 125 Amps 4 pole - 1 No (c) MCCB 63 Amps 4 Pole 50 Hz 415 V rupturing capacity 25 KA - 2 Nos (Outgoing). (d) MCB TPN 40 Amps 230 V, 10 kA 'C' curve - 2 Nos (Outgoing). (e) Current transformer 125/ 5 A - 3 Nos (f) Three phase LED multi-function meter for indication of Current, Voltage, Frequency, Power Factor, KW, KVA, KVAR, KWH, KVAH, KVARH, MD etc - 1 No (g) Phase Indicating lamp LED type (R, Y, B) - set of three.

Taking down Chowkhat or frame exc 1.5 sq. m but n exc 4 sq. m each with shutters (without taking off shutters from the frame) refixing in same opening complete all as specified and as directed.

M&L for Pre-cast cement concrete block masonry with solid blocks, exc. 10 cm in width and setting in 1:6 cement mortar C1 1:3:6 (20 mm graded stone aggregate) complete all as specified and directed

M & L for providing, reinforced cement concrete B1 1:2:4 (20 mm graded stone aggregate) in roof kerbs or mud stops, rounded or chamfered on edges in lintels upto 1.5m clear span, cills, steps; seismic and other similar bands, plinth courses, string courses, lacing courses, parapets and railings upto 60 cm in height, copings, kneelers, apex stones, bed plates, kerbs not provided for in Item 04028, water troughs and the like including weathering, slightly rounded or chamfered angles and throating complete all as specified and directed.

M & L for Rendering 10mm thick on fair faces of brickwork or concrete surfaces in cement mortar (1:6) on concrete surface finished even and fair without using extra cement, complete all as specified and directed.

M&L for Preparing newly plastered surfaces of walls and applying two coats of distemper oil emulsion over a coat of alkali resistant primer over one coat of wall care putty (3mm thick), complete all as specified and as directed.

S & F Voltage stabilizer for automatic operation, three phase naturally oil cooled indoor type & designed for input variation between 340 V to 460 V with output voltage stabilized at 415 with accuracy ± 1% and speed of correction 50 Volts per second and of capacity 25 KVA complete all as specified and directed.

M & L for Detectors Complying with and type certified to EN - 45 Addressable type heat and smoke combination detector Photoelectric /Optical with base with self built intelligence as per IS: 11360 complete all as specified and directed.

M & L for Fire Alarm Sounders / Sirens Electronic type horizontal single stage continous normal operation for atleast 50 minutes with sound level 65 DB to 120 DB measured at 1.5 Mtr with sound output variation of + 5 DB 500 mtr range complete all as specified and directed.

M & L for Wiring for circuit/submain wiring with 2 run of 1.5 sqmm FR is PVC insulated unsheathed multi-stranded copper conductor, single core cable in surface/ recessed as required in PVC conduit complete all as specified and directed.

M & L for Addressable manual call point resettable type complete all as specified and directed.

M & L for Tubes, 'medium grade' galvanised, with all fitting and fixed complete to walls and ceilings or laid in floors 20 mm bore complete all as specified and directed.

M & L for Screwing existing steel tubing of size 20 mm bore for alterations or additions (or lengthening screw on pipe to form connector) complete all as specified and directed.

S & F for Stop valve, cast copper alloy, screwed down, high pressure, with crutch or butterfly handle, screwed both ends for iron pipe or for unions and fixed of size 20 mm

M & L for earthing with copper earth plate electrode of size 600 mm x 600 mm x 3 mm buried directly in ground (earth pit not less than 2.25m deep below GL with top edge of plate not less than 1.50 m below normal ground level) connected to copper earth lead strip of size 20 mm x 3 mm by means of bolts, nuts, check nuts and washers including brazing at all joints including 40 mm bore medium grade GI tubing for protection of earth lead, MS sheet metal funnel with wire mesh, watering pipe medium grade 20mm bore, charcoal and common salt in alternative layer of 15 cm compacted thickness all around the electrode with concrete earth pit of PCC type C1 (1:3:6, using 20mm graded crushed stone aggregates) 50mm thick precast RCC type B1, (1:2:4, using 20mm graded crushed stone aggregates) pit cover reinforced with 8mm dia TMT bars @ 75 mm C/C both ways with mild steel handle 10 mm dia including necessary excavation and earth work in soft/loose soil and disposal of spoils to a distance n.exc 50m and necessary connection and testing complete all as shown in electrical plate No 3 of SSR Part-I, 2009 [Note:- The rates quoted deemed to include the cost of earth strip and protection pipe upto 7.5 meter beyond the earth plate electrode]

M/s JK Jangid and Company

M/S LAKSHMI COOLING CENTRE