Replacement of 4 x 11.0 TR Packaged AC of LT-6 (1and2), IIT Delhi (including CAMC)

Amount

Supply Installation, Testing & Commissioning of factory assembled and factory tested 11.0 TR Packaged type Air conditioner suitable for cooling having air cooled Outdoor units, all hermetically sealed inverter type Scroll Compressor(s) designed for 4.4 deg C suction temperature and 43.3 deg C discharge temperature, microprocessor-based Controller, top / side discharge type condensing unit(s), with R-410 a (or CFC and HCFC free) Refrigerant, vibration isolators, with suitable foundation etc. complete as required. The unit shall deliver not less than 4400 CFM supply air. The unit shall be suitable to work on 400 V ±10%, 3 Phase, 50Hz AC power supply. Indoor unit shall be equipped with washable synthetic media pre-filter (95 percent down to 5 micron), fan section with low noise fan/dynamically balanced blower, multispeed motor, coil section with DX copper coil, electronic expansion valve, compressor, corded remote control, outer cabinet, drain pan, other necessary supports etc. The unit shall be filled with first charge of the refrigerant and ready for use as required. As per the attached specifications. The cooling capacity of indoor unit will be at air inlet conditions of 27 degree centigrade dry bulb (DB) an 19 degree centigrade wet bulb (WB) temperature. (Acceptable Make: Daikin / LG / BlueStar / Toshiba / Carrier / O'General / Mitsubishi / Voltas)

Supply, Installation, testing and commissioning including Vaccumiazation and Nitrogen testing of following nominal sizes hard drawn copper refrigerant piping for the packaged AC system, complete with fittings, with suitable adjustable ring type hanger supports (wherever required), jointing / brazing including accessories, making hole on wall wherever required with proper finishing, for Suction and Liquidlines, all accessories as per specifications etc. [Acceptable make of copper pipes : Uniflow / Manibhadra / Ganpati / Mexflow / Mandev / Indigo / Godrej / Visiaro) Acceptable make of tubular insulation: Visiaro / Marshland / Avi Global / Armaflex / Aajjo / Dynamic / Uttam] NOTE: (1) The copper piping and piping circuit should be with minimum number of joints, which shall be attained by: (a) Using one end expanded tubes (b) bending the tubes instead of using elbow joints wherever 90 degree bending is required (2) Piping should be routed at site in such a manner, that brazed joints in the refrigeration piping are kept to a minimum (3) The makes of tube fittings shall be same as that of tubes (4) The thickness of fittings used shall be same as that of the pipe

15.86 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm with 19 mm thick insulation

19 mm dia (OD) (Hard drawn) with tube thickness 1.2 mm with 19 mm thick insulation

22.2 mm dia (OD) (Hard drawn) with tube thickness 1.2 mm with 19 mm thick insulation

28.58 mm dia (OD) (Hard drawn) with tube thickness 1.2 mm with 19 mm thick insulation

GI TRAY SUPPORT: Supplying and installing following size of perforated Hot Dipped Galvanised Iron Cable tray (galvanisation thickness not less than 50 microns) with perforation not more than 17.5% in convenient sections, joined with connectors, suspended / supported from the ceiling / wall with GI suspenders including GI bolts and nuts, GI C-Channels, etc. including GI protective sheet covering outside the room as required. (Only for outdoor portion)

225 mm width x 50 mm depth x 1.6 mm thickness

150 mm width x 50 mm depth x 1.6 mm thickness

DRAIN PIPE: Supplying and laying of ISI marked CPVC pipe of 32 mm dia for draining of sweated water from AC evaporator (indoor) unit including providing tee, joints, elbows, supports, etc. insulated with XLPE class - O tubular insulation / with Class-O closed cell elastomeric nitrile rubber tubular sleeves sections of 13 mm thick etc. complete as required.

Fabricating, Providing and fixing M.S. iron frame fabricated with M.S. C-channel of size 50 mm x 50 mm x 6 mm (thick) for resting the condenser unit on the roof / floor of the building duly supported from the bottom as required including painting and grouting the framework with cement concrete etc. complete as required.

Supplying and laying of ISI marked PVC insulated XLPE copper cable of following size of 1.1 kv grade conforming to IS694:2010 on surface including making connections with end termination with copper lugs, etc. as required. (Acceptable make: Polycab / Havells / Gloster / RR Kabel / Nicco / Skytone / Finolex / KEI / Universal / Anchor) [NB: Single stranded cable not to be used]

3 core x 6 sqmm

4 core x 10 sqmm

4 core x 16 sqmm

Fabrication, supply, installation, testing & commissioning of electrical control panel of cubicle construction, floor mounted type, fabricated out of 2 mm thick CRCA sheet, compartmentalised with hinged lockable doors, dust and vermin proof, powder coated with approved shade after 7 tank treatment process, cable alley, interconnection with suitable size copper conductor cable / solid copper strip, having switchgears and accessories, mountings and internal wiring, earth terminals, etc. complete in all respect suitable for incoming and outgoing power supply for 2 x 11.0 TR Packaged ACs complete as per CPWD specifications with following incoming and outgoings, suitable for operation on 400 V, 3 phase, 50 Hz, ac supply with enclosure protection class IP42 as required of size not less than 800 mm x 800 mm x 300 mm (depth) [drawing of panel shall be got approved from IITD before fabrication and making] INCOMING: (a) 63 A, 30 kA, 4 Pole MCCB, (b) Digital Multifunction Meter of class 1.0 for Voltage, Current, Frequency, Power Factor (c) & CTs (d) LED type RYB phase indicating lamps, set of copper busbar of 100 A - 01 set OUTGOING: 32 A, 16 kA, 4 Pole MCCB, current sensing type single phase preventor complete with all accessories and internal wiring required for connection upto bolted type heavy duty terminals - 03 sets

Supply, Installation, testing and commissioning of GI volume control duct damper complete with neoprene rubber gaskets, nuts, bolts, screws, linkages, flanges, etc. as per specifications

Providing and fixing 4 mm dia copper wire on surface or in recess for loop earthing along with existing surface / recessed conduit / submain wiring / power cable as required.

Cleaning of inside surface of ducts of HVAC system by NADCA (National Air Duct Cleaners Association) certified agency using high power vacuum, robotic camera, air hammer, special nozzle air sweep and other required accessories including checking of of dust level before and after cleaning using colour video inspection method to ascertain the quality of cleaning etc. upto the satisfaction of the Engineer-in-charge.

Cleaning and servicing of LT Panel by high pressure air-blower, CTC solution, de-rusting of all connections, busbars, switchgears, wiring, replacement of all rusted nuts, bolts, washers, connectors, re-thimbling (end termination of cables) after taking shutdown, re-connecting all accessories, meggering, etc. complete as directed.

Dismantling and removing of existing outlived 11.0 TR Packaged AC units, all outdoor units, refrigerant pipes disconnection of existing tray, cables, etc. other associated accessories as directed by Engineer -in-charge

SUB HEAD - 2 (AMC) (Supplementary agreement shall be formed after DLP) under ARMO Fund

Comprehensive (Routine, Preventive and Breakdown) maintenance of 4 x 11.0 TR Air Cooled Packaged Type AC unit including its all accessories, condensers, evaporator units, time to time checking of refrigerant leakage, electrical circuits, etc. for smooth operation of the entire AC units during the defect liability period of 1 year after date of commissioning as per maintenance schedule. (No payment shall be made separately for this period): 1st Year

Comprehensive (Routine, Preventive and Breakdown) maintenance of 4 x 11.0 TR Air Cooled Packaged Type AC unit including its all accessories, condensers, evaporator units, time to time checking of refrigerant leakage, electrical circuits, etc. for smooth operation of the entire AC units after defect liability period of 1 year from the date of commissioning as per maintenance schedule. Any breakdown shall be attended within 4 hours of reporting. Spare parts required during breakdown maintenance shall be arranged and replaced by the Contractor. (N.B.: 01 Job means during a period of one year)

2nd year (For 12 months)

3rd year (For 12 months)

4th year (For 12 months)

5th year (For 12 months)

6th year (For 12 months)

(-) Less Buy-Back of Old & Outlived AC 11.0 TR Packaged AC units, outdoor units, other accessories [as is where is basis] Reserve Price is Rs.20,000 per unit. Bidder cannot quote below the reserve price.

Volks Energie Pvt Ltd

RefAir Technical Services

M/S COOLREF ENGINEERS