Repair and Renovation of Electrical Installations at Gynae Main OT inside NBMCH, Darjeeling-SITC of Air Conditioning system.

Amount

Dismanting the Existing 08 Nos Split type AC machines (IDU & ODU ) , Timers , wirings & submitted to section store as per Direction of the E.I.C

Supply of 3.0 TR capacity concealed type Split Air Conditioner of rated cooling capacity of 36000 BTU/hr. with 2 Nos. twin rotary/Scroll compressor, 2 nos. IDU of rated power supply-230V-1ph-50Hz. 1 No. ODU of rated power supply-400V-1ph-50Hz. Air-flow/per IDU:- 600CFM ( Make : Hitachi / Ogeneral / Daikin / Mitsubishi)

SITC of 5 TR capacity Flexi Tye Air Conditioner of rated cooling capacity of 60000 BTU/hr , having following specifications: ODU : Twin rotary compressor-- 02 Nos , rated power supply -400V, 3Ph-50Hz., IDU : 2 nos IDU ( Conealed split /HAT Type ) of rated power supply 230V-1Ph-50 Hz, Air flow/per IDU-1000CFM (Make- Hitachi / O- General/Mitsubishi/ Daikin)

SITC of 1.5 TR capacity Fixed speed Flexi Tye Air Conditioner of rated cooling capacity of 18000 BTU/ hr having following Specification : ODU : 230 V , 1 phase , 50 Hz , rotary type copressor -1 Nos incl. ODU Stand IDU : ( Conealed split /HAT Type ) of rated power supply 230V-1Ph-50 Hz, Air flow/per IDU-600 CFM (Make- Hitachi / O- General/Mitsubishi/ Daikin)

Supply, installation & Commissioning of hard/soft copper refrigerent pipe line with 9mm nitral rubber insulation and Al foil tape complete with fittings,elbows bends, supporting arrangements on wall (Make- Uniflow /Rajco/Nippon/Venum )

Liquid Line(3/8" OD with 0.6mm thick) [ for 3 / 5 TR ]

Liquid Line(1/4" OD with 0.6mm thick) [ for 1.5 TR]

Suction Line(5/8" OD with 0.7mm thick) [ for 1.5TR/3TR/5 TR ]

Suppying , Fabricating & Fixing 3 nos. MS u- Channel of 6mm thick of Size (75mm x 40mm x 40mm) for making platform for Installation of outdoor unit of 7.5 TR Concealed split Incl. drilling 2 nos holes in each channel incl. cutting holes into the wall & grouting the same with cement concreate(1:1 1/2:3) etc. fabricated with horizontal angle of 25mm x25mm x 6mm incl. supporting angle 50mm x50mm x 6mm in each platform., for transmitting the load centrally through 2Nos. (50mm x 50mm x 6mm) Angle inserted into the exiting wall. . Area of the platform is 4 mtr x 1.2 Mtr x 1 Mtr or as per Machine configuration & load with adequate service access as per direction of EIC.

Supply and Fixing Al powder coated Grill (Make-Primer/Air kolkata)

Charges for Trap door made of Aluminiun channel & ACP sheet for IDU maintenance as per direction of the E.I.C

Supply and Fixing UPVC/HDPE Drain water pipe line having 25/20 mm dia with necessary Tee, Bends , Elbows , Tappings , Flanges etc. as requiredas per direction of the E.I.C (Make- Supreme/ Oriplast/ HB)

Charges for drop ceiling to cover the Indoor units made of ACP 3 mm thick. ( Make Audecor or PWD approved) as per direction of The E.I.C

Supply & Fixing of 1.1 KV. Grade 4 core 6 Sq.mm XLPE Insulated & Sheathed Armoured stranded Copper cable of following on existing cable tray or necessary saddles on wall as required as per direction of E.I.C [Make: POLYCAB/Havells/RRCable/ KEI ]

Supply & Fixing of 1.1 KV. Grade 2 core 4 Sq.mm XLPE Insulated & Sheathed Armoured stranded Copper cable of following on existing cable tray or necessary saddles on wall as required as per direction of E.I.C [Make: POLYCAB/Havells/RRCable/ KEI ]

Supply & Fixing PVC Loop Box of size ( 250 mm x 200 mm x 105 mm ) having din rail arrangement on suface with necy. Fast nut as per direction of E.I.C (Make- Sintex GSMB 2520)

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.

200x50x1.25mm (18SWG) With 25x25x3mm angle iron support

Finishing of the PVC insulated wire ends by socketting with pin/ ring type copper sockets and insulated tapes etc., including supplying sockets, tapes.

Supplying and fixing 240/415 V MCB Isolator on din rail of existing DBs and necessary connection. 40 A FP [ Make- Legrand / Schneider / l & k ]

Supplying and Fixing 25A OLP -3+AC starter on 175mm X 100 mm GI box flushed in wall with voltage check , Amp check, time check incl. all connection.(make-Electron)

S&F of 250V, 25A timer controlled single PHASE starter for controlling one no. room Air Conditioning Machine in SS double door 2+10 way DB enclosure (L&T / SEIMENS / Legrand make) with S&F following electrical accessories & front door locking arrangement with all connections by finishing the ends of 2 x 4 & 1 x 2.5 mm2 copper wire with dowells solderless socket by crimping method as to GS, earthing attachment on wall incl. necessary connections as per direction of EIC:-(3 nos for existing machine)

1) 25A DP MCB (L&T/SEIMENS/Legrand make)-1 no

ii) 24Hr x 7 days programmable Digital timer (L&T make Cat no 69DDT0)-1 no.

iii) 2-pole power contactor (L&T make Cat no MNX22/250V) - 1 no.

iv) 25A SP MCB (Make Legrand /SEIMENS/L&T) - 1 no.

v) 25A Auto-Off-Bipass SPDT toggle switch (approved reputed make) -1 no.

vi) LED indication lamp (approved reputed make) - 1 no.

vii) Outgoing bakelite connector 32A (Reputed make as approved by EIC) - 2 nos

Supply and fixing of 3 PHASE timer control switch for controlling AC machines made of suitable size MS sheet duly Power coated paint with IP - 43 protection with front door locking arrangement with all connection and comprising with following accessories including necessary connenctions and earthing attachment on angel iron frame on wall / embedding in wall as per instruction of EIC. a) 40 A FP MCB - 1 no. (Make - L&T cat no - (AUF3C403210)/LEgrand - ). b) 32A Three Pole Contactor - 2 no. (Make - L&T, MNX type -CS94111 /) c) 20-32A Over load Relay - 2 no. (Make - L&T-SS94136OOGO/ ) d) Daily & weekly programmable basis digital time switch, min switching time 1 min, 25 ON/OFF programs, 6 yrs. Battery backup, settable DST & key pad lock features. - 1 no. (Cat no. - 67DDTO. - L &T - GIC make / equivalent Legrand make) e) Start / Stop push button - 1+1 No. (L&T/ Siemens) f) RYB/Amber LED indication Lamp, 240V AC -1+1 Nos. (L&T / Siemens) g) Aux-Relay - 1 No. (L&T / Siemens)

COLD STAR CO. (BID ID -7750566)

CARRION AIR COOLING (BID ID -7727602)