Supply, Installation, Testing and Commissioning of different capacity air cooled type AC Units with associated works at various buildings under MTNL, New Delhi.

Amount

Supplying, Installing, Testing & commissioning of following (Nominal capacity) AC units complete with outdoor unit,indoor unit,compressor operating on 3 phase ,415v + 10%,50Hz A.C. supply, suitable for R22 refrigerant & with all other associated accessories like various motors, condensing and evaporator coils complete in all respect, housed in heavy gauge sheet metal powder coated cabinet and capable for performing cooling, air circulation and inbuilt motor protections etc.as reqd. a) 3 TR Capacity AC Unit (Suitable for R22 Refrigerant Gas)

b) 5.5 TR Capacity AC Unit

c) 8.75 TR Capacity AC Unit

d) 8.75 TR Capacity AC Package Unit

e) 11 TR Capacity AC Unit

f) 11 TR Capacity AC Package Unit

Supplying and fixing of G.I Sheet metal ducting i/c air distribution system, complete thickness gauge i/c nut bolts & gasket etc. as required. a) 22 Gauge G.I Sheet

b) 24 Gauge G.I sheet

Pdg. & fixing Volume Control damper for the package unit to control the supply air quantity complete as reqd

Canvas Connection with fire ressistance cloth complete as reqd.

Supply and Application/fixing of Insulation Inside the Duct/inner surface with Engineered Nitrile Rubber open cell foam, passing Class 1 Fire Performance test as per BS 476 Part 7, Air Erosion test for 10,000 fpm air velocity as per ASTM C 1071-05 and with built-in EPA approved antimicrobial protection; to be applied using manufacturer's recommended Rubber based Adhesive in a blend of solvents or 50 mm thick fibre glass insulation of denisity Number less than 32 kg/m3 and further covered with tissue paper and finshed with 26 Gauge aluminium perforated GI/Al sheet.

Providing and fixing supply air grille/diffuser withb VCD for indoor ductable/Package AC units etc complete as required.

Providing and fixing return air grille/diffuser to be fixed in return air path etc complete as required.

Pdg. & installing following size copper pipe including cutting bending, jointing, brazing etc as reqd. for hot and liquid refrigerant line complete as reqd. a) 7/8"

Pressure testing with nitrogen pressure standing for at least 8 hr. vaccumzing & commissioning of AC unit complete as reqd.

Supplying & laying of following sizes PVC sheated armoured copper conductor cable on the existing wall/ ceiling for power/ control cabling etc. as reqd. (a) 4 x 6 Sq. mm

b) 4 C x 1.5 Sq.mm

c) 6 C x 1.5 Sq.mm

d) 4 C x 10 Sq.mm

e) Multicore unarmoured cable 8 Core

Fabricating & installing of 50mm wide cable tray tray made out with pre-painted/powder coated M.S. Sheet material i/c nut bolt, screw & hardwares etc. as reqd

Supplying & laying of 8 SWG. G.I. Wire on surface or on recess for loop earthing on the existing surface recess with main power cable etc. as reqd.

Pdg. & making MS structure steel work for cond/ duct supports/tray support/accoustic grid and frame work with angle/channel, plates etc i/c accessories and cutting, welding, painting of the same etc as reqd.

Providing & making drain arrangement for AC units with pipe size 25 mm i/c Tee, union socket & elbow etc as reqd. (Material - uPVC or recommended)

Pdg & fixing of copper pipe insulation (a)Pdg & fixing KINI FOAM insulation complete as reqd.

b) Providing and fixing MS stand for Package AC Units etc as required.

c) Pdg and fixing MS Stand for condenser units etc as reqd.

SITC of cubical type sheet metal free standing back closed M.V. switch board with 250 Amps bus bar and internal wiring for operation on 415 Volts, 50 Hz, AC supply each MV panel consisting of the following etc. complete as required. INCOMING: a) 250 Amps MCCB - 1 Number (Make-M/s LEGRAND,ABB,HAVELLS, L&T, Schneider) OUTGOING : a) 63 Amps 4P MCCB 25 KA - 5 Number. (Make-M/s LEGRAND,ABB,HAVELLS, L&T, Schneider) b) Space for 63 Amp MCCB - 1 Number. c) Digital Ampere meter, Digital Volt meter and RYB LED indication lamps for 250 Amp MCCB incomer etc. as reqd.

Providing and Installation of Inline fans container comprising of booster/centrifugal fan of SISW/DIDW type for pre-cooling of 5000 CFM at 20mm WG static pressure suitable for operation on 415 Volts, 3 Phase, 50 Hz, 4 wire system along with TEFC motors with special long life bearings, wheel balancing, trim balancing etc, V Belt Drive/Direct Drive, vibration isolators, terminal block for termination of cables etc complete as required.

Providing and Installation of Inline fans container comprising of booster/centrifugal fan of SISW/DIDW type for exhaust air of 2500 CFM at 10mm WG static pressure suitable for operation on 415 Volts, 3 Phase, 50 Hz, wire system along with TEFC motors with special long life bearings, wheel balancing, trim balancing etc, V Belt Drive/Direct Drive, vibration isolators, terminal block for termination of cables etc complete as required.

Supplying and filling of R 22 refrigerant gas in AC unit etc as required.

Providing and Replacement of Angle Valve with accessories etc

SITC of microprocessor based controller panel consisting of controlling the ac unit i/c inter connections of HP & LP cut out temp sensor, cut outs with display arrangement for single/two circuits in AC units with operating ON/OFF pushing arrangements etc complete as complete as reqd.

Dismentaling of old package/ductable AC unit i/c its electrical /mechanical connection complete as reqd.

Providing & fixing metallic inter connections for each circuit for distribution of air from package unit to main branch for air distribution

Dismantling & Lifting of AC units (a) Dismentaling of drain pipes, copper piping, cabling, cable tray & shifting to desired location.required.

Lifting of A.C unit from ground floor to the desired place i e upto the site where the A C room is situated with the help of heavy labour & chain pully block complete as reqd.

Minor civil work /Wall/Partition opening for finishing the A.C fresh air package/ AC Units etc

Johnson controls-Hitachi air conditioning India Ltd