ITC of Split and Window Air-Conditioners in different Labs, Offices in IIT Delhi (2022-23)

Amount

Installation, testing and commissioning of 1 / 1.5 / 2 TR split type A.C. unit including installation of condenser unit, installation of evaporator [cooling] unit, making suitable opening in the wall for drawing of refrigerant pipes, power supplying to indoor and outdoor units, wrapping the refrigerant pipes with foam / polyurithene insulation, sealing the holes properly on the wall, etc. complete as required. (Note: Rate includes laying of copper refrigerant pipe and foam insulation upto 3 metre length)

Installation, testing and commissioning of 0.75 / 1 / 1.5 TR window type A.C. unit in the existing window, properly sealing the gap of window with inulation, complete with electrical connections etc. as required.

Supply, Installation, testing and commissioning including vaccumiazation and nitrogen testing of following nominal sizes of soft drawn copper refrigerant piping for split AC unit, complete with fittings, with suitable adjustable ring type hanger supports (wherever required), jointing / brazing including accessories, insulated with nitrile rubber tube sleeves sections of specified thickness as given below for Suction and Liquidlines, all accessories as per specifications etc. as required : 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 thickness of fittings used shall be same as that of the pipe

12.7 mm (1/2 inch) dia (OD) (Soft drawn) with tube thickness 1.2 mm with class - 1 nitrile rubber tube (foam) insulation of not less than 9 mm thick.

15.86 mm (5/8 inch) dia (OD) (Soft drawn) with tube thickness 1.2 mm with class - 1 nitrile rubber tube (foam) insulation of not less than 9 mm thick.

9.5 mm (3/8 inch) dia (OD) (Hard drawn) with tube thickness 1.2 mm with class - 1 nitrile rubber tube (foam) insulation of not less than 9 mm thick.

19 mm (3/4 inch) dia (OD) (Hard drawn) with tube thickness 1.2 mm with class - 1 nitrile rubber tube (foam) insulation of not less than 9 mm thick.

Supplying and laying ISI marked 25 mm dia pvc pipe (flexible & braided type) for drain line, including providing insulation wherever necessary, proper saddling, etc. complete as required. (Acceptable make: Astral / Supreme / Finolex / Prince / Savera / Ashirvad / Apollo)

Supplying and laying of ISI marked hard CPVC pipe of 25 mm dia for draining of sweated water from AC evaporator unit including providing tee, joints, elbows, insulation wherever necessary etc. complete as required. (Acceptable make: Astral / Supreme / Finolex / Prince / Savera / Ashirvad / Apollo)

Supplying and laying of ISI marked FRLS 4 core x 2.5 sqmm PVC insulated industrial flexible copper conductor cable of 1.1 kV grade conforming to IS 694:2010 including making connections etc. as required. (Acceptable make: Havells / Finolex / Polycab / RR Kabel / KEI / Sterlite / Shilpi / Anchor / Universal)

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. Size: 150 mm width X 50 mm depth X 1.6 mm thickness

Supplying and charging of refrigerant (R-32 / R407 / R410) as applicable for AC unit for topping up where pipe lines are lengthy etc. as required.

Supplying and fixing of 10 mm thick wooden board of suitable size for fixing of indoor unit of split AC on aluminium channel including making holes, providing screws etc. as required.

Supplying and fixing of prototype adjustable readymade stand made of steel for resting condenser unit either on flat surface or on wall [as per site requirement - either floor mounted or wall mounted], duly prepainted with anticorrosive paint, nuts, bolts, fasteners, grouting / properly securing from accidental fall, fasteners, etc. complete as required.

Fabricating, Providing and fixing M.S. angle iron frame for resting condenser unit outside the wall of the building duly fabricated with M.S. angle of size 50mm x 50mm x 6 mm duly supported on wall from the bottom with same angle iron and finally making good the damages including painting the framework etc. complete as required. (For places where normal installation of condenser unit on stand is not possible. Due precaution shall be taken by the contractor for safety of the worker while installing in multi storey buildings. Size of the platform shall be so spacious that one person standing on the platform can service and maintain the condenser unit without any obstruction)

De-installation of split type air-conditioner[1.0/1.5/2.0 TR capacity) from its existing place, including de-installation of indoor and outdoor unit, removing of existing refrigerant pipes, shifting the unit to another place as directed by the Engineer-in-charge. (this work is undertaken when replacement of existing AC is recommended)

Supplying and drawing following sizes of FRLS PVC insulated copper conductor, single core cable in the existing surface/ recessed steel/PVC conduit as required. (Acceptable make: Havells / Finolex / Polycab / RR Kabel / KEI / Sterlite / Shilpi / Anchor / Universal)

3 X 4 sq.mm

Supplying and fixing of following size of steel conduit along with accessories in surface/recess including painting in case of surface conduit, or cutting the wall and making good the same in case of recessed conduit as required.

25 mm (ISI marked)

Supplying and fixing DP sheet steel enclosure on surface/ recess along with 16/20 A 240 V "C" curve DP MCB complete with connections,testing and commissioning etc. as required. (for supplying of power to AC units) (Acceptable make: Havells / C&S / L&T / ABB / Standard / GM / Legrand / Schneider / Siemens)

Supplying and laying DLP PVC trunking system and accessories with Body + Flexible cover + Flat angle for accommodating AC pipes, drain pipe and power chord for aesthetics in specific areas complete as directed. (Acceptable make: Legrand)

Body with cover 105 X 50 mm

Flat angle for the above size trunking