Annual Comprehensive Maintenance of Air conditioners and ventilation systems in various buildings in IIT Madras for the year 2026-27

AMC of Window/split/cassette/ductable split /packaged Acs

Comprehensive annual maintenance charges for the Window, split, package, ductable, cassette model air conditioners of following capacity including replacement with new compressors and all spares of the machines like indoor units, fan motors and blades, condensers, remote controllers, control wirings and terminal blocks & cover, vacuumising, pressure testing and gas filling if necessary during maintenance.(Machines details and locations as per Annexure)

11.0 TR DX unit with AHU at Hospital OT

AMC of Kitchen Exhaust System/Toilet ventilation systems

Non Comprehensive Maintenance of Kitchen exhaust system at roof top of the building of various capacities.This will include routine servicing/ regular maintenance, filter cleaning, preventive mainteanance of equipments and breakdown repairs as and when occurred, ensuring that system does not remain out of service for a period not less than 4 hours in case of major breakdowns and one hour in case of minor breakdowns due to any unforeseen breakdown. The rate shall include for consumables including belts required(2 Belts per contract can be considered) for satisfactory maintanace of the installation. In case of replacement of spares required for other than belts,oiling and greese will be paid extra.

Kitchen Exhaust System and fresh air system

Toilet ventilation System

Toilet ventilation System-Circular/Cabinet Inline fans

Special Allied Works

Charges for removing the following rating /model air conditioners from the existing position including transport and safely handed over to store.

Upto 2.0 TR split model Acs(both indoor & Outdoor unit)

Upto 2.5 TR Cassette type Acs(both indoor& Outdoor unit)

Upto 8.5 TR ductable split/Packaged Acs(both indoor& Outdoor unit)

Charges for removing the following rating FCUs/CSUs from the existing position including disconnect the unit from the chilled water header with required welding and finishing work with suitable insulation, transport and safely handed over to store.

Upto 2.5 TR FCUs

Upto 6.0 TR CSUs

Upto 13.0 TR CSUs

Installation charges for the following rating split/ductable split/packaged and cassette type air conditioners from one position to other position including the pump down, nitrogen pressure testing, vaccumising and refilling of gas and making the machine in good working condition. (ACs will be supplied from our stores at free of cost. The contractor should arrange for transport from stores to respective locations.

Upto 2.0 TR split model Acs(both indoor & Outdoor unit)

Upto 2.5 TR Cassette type Acs(both indoor& Outdoor unit)

Upto 8.5 TR ductable split/Packaged Acs(both indoor& Outdoor unit)

Gas charging for Unitatary Acs of 1.5TR/2.0 TR compressor including pressure holding and leak testing.

Gas charging/top up for ductable/packaged type ACs of following rating including pressure holding and leak testing. The gas shall be as per the machine description(like R 134A/R 407C/R 410A)

Refrigerant soft copper piping(Suction & discharge) with power chord for split ductable split and cassette type air conditioners upto 3.0 TR.

Refrigerant Hard drawn copper piping(Suction & discharge) for ductable split /packaged type air conditioners upto 8.5 TR.

Thermal insulation for copper pipes using suitable foam insulation/Nitrile rubber insulation. (Necessary scafolding/ladder to be provided by the contractor).

Supplying & replacement of condensing/evoporator coil with copper tube with aluminium fins in place of aluminium tube with aluminium fins of the following Acs.

Upto 2.0 TR window AC/Split Acs

Supply and fixing of following accessories while attending shifting the Acs from one location to other location/not covered under the AMC/warranty.

45/50 MFD capacitor

Reconditioning of Outdoor fan motor suitable for split Acs upto 2.0TR

Reconditioning Indoor fan motor suitable for split Acs upto 2.0TR

25 mm water line drain pipe

38/40 mm water line drain pipe

50mm dia water line drain pipe

75mm dia water line drain pipe

3 core 2.5 sq.mm copper Chord wire

6 core 1.5 sq.mm copper chord wire

out door fan blade

Mounting angle for outdoor AC unit

PCB serving for Acs upto 2.0 TR

Strainer capilliary tube

Fan capacitor

SS Glycerine filled Pressure gauges(100mm dia)

1.5 TR indoor unit with copper heat exchanger to match with existing unit

Hand held remote for split/window Acs

Prefilters for AHU/Fresh air fans

25mm /Brass Gun metal Ball valve

Sequential timer to control the 2 ACs alternatively

V-Belt-SPA-3150 or its equivalent

V-Belt-SPA-3350 or its equivalent

V-Belt-A26/A-29 or its equivalent

V-Belt-A-60 or its equivalent

V-Belt-B 112 or its equivalent

Fan motor for circular/cabinet type inline fans(100-850CFM)

Room Thermostat compatable with BMS

20mm dia medium duty PVC conduit/20mm case in caping

Charges for dismatling of existing GI duct work without damaging the wall/ceilig/false ceiling and other items in the location including loading,unloading safely transport the same to IIT identified location within a range of 1km.

Supply, installation of factory fabricated completely finished and boxed ducts (including the duct flange). All sheet shall be Class VIII – light coating of zinc, nominal 120 gsm / sqmt surface area including two sides and Lock Forming Quality prime material along with mill test certificates. TDF type flanges with rubber gaskets of thickness to match the dimensions of the ducts shall be used for connecting two ducts complete with necessary Hitech supports. The duct sealing requirement shall be of class 'B' to ensure the duct leakage shall not to exceed as per SMACNA leakage class 12. The Duct to be manufactured and tested as per SMACNA standard for Class-500 pascals.

Thickness 1.00 mm sheet

Thickness 0.80 mm sheet

Supply, installation, testing and balancing of air distribution system consists of factory fabricated GI sheet Flat Oval and powder coating duct with factory made fittings like bends, tees, hanging support - gripple make cable (#3 type) with crimp arrangement supports, spacing and fixing as per SMACNA standards. The rate shall be inclusive of powder coating (Mat finish) for the ducts. The colour shade shall be approved by the Institute

0.6mm thick GSS ducting (upto 600mm dia)

Supply and installation of Aluminium foil faced cross linked polyethylence insulation on SA duct & RA duct as per specifications.

9mm thick

19mm thick

25mm thick

Supply and installation of Accoustic insulation for ducting with with open cell nitrile rubber insulation material with 10mm thick & density 140-180kg/m3

Supply and installation of aluminium volume control dampers for SA grills/diffusers.

Supply,installation,testing & commissioning of Powder coated extruded Aluminium Supply/Return air grille

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

Supplying & fixing of Fresh air intake louvers bird screen type with prefilter and aluminium wire mesh (Aluminium extruded only) as per specification and sizes.

Supply, laying, terminating, testing and commissioning of PVC insulated, PVC sheathed steel armoured copper 1100V grade power\ control cable as required with terminations.

4C X 6 sqmm

6C X 1.5 Sqmm Copper cable for control

Supplying and fixing of following sizes 1.6mm thick MS powder coated perforated cable tray with cover on wall/ceiling with necessary supporting materials.

100mm x 50mm

150mm x 50mm

300mm x 75mm

Charges for engaging skilled labour to carry out the HVAC related work//operation of AC machines in large halls/Class rooms such as AHUs/DX units as required/and all other electro mechanical related works as instructed.(Every 4 hours will be taken as 1/2 day of work)

Painting with one coat on the MS pipe/MS angle and other steel structure using rubberised MRF paint as required.

Supplying and fixing of AI frame work of required size and dimention to suit to install outdoor/indoor units as required.

Excavation for cable/pipe trenches in soft soil, depth upto 1.2 m including dressing of sides lift upto 1.5 m, including getting out the excavated soil, refilling with sand and or good soil after laying of cable/ pipe etc in layers of 20 cm, ramming, watering and disposal of surplus excavated soil as directed, within a lead of 50 metres.

Excavation of the cable trenches in hard rock like roads not exceeding 1.5 metres in width, and lift upto 1.5 metres, including getting out the excavated soil and disposal of excavated soil as directed within a lead of 50 metres.

Please Enable Macros to View BoQ information