SITC of 5x11 TR Ductable AC units at T.E. Building Saraswati Vihar MTNL, New Delhi

Amount

Supply, installation, testing & commissioning of following TR ( nominal capacity) air cooled air conditioning units suitable to operate on 3 phase , 415V +/- 5%, 50Hz A.C. supply; complete with indoor unit (air circulation 400CFM/TR), outdoor unit, compressors, chorded remote control for ductable a.c.units, various motors, coils, filters, integral control panel inbuilt protection etc complete in all respect and capable of performing cooling, air circulation, filtration, temperature sensors and 2 years additional warranty after defect liability period of 1 year complete as reqd. as per technical specifications attached. a) 11.0 TR Ductable a.c. unit

Supply & fixing of G. I. sheet metal ducting for air supply,mixing , air distribution , complete with following thickness (gauge) i/c nut bolts, gaskets, suspenders, supports etc. as required. a) 24 gauge G. I. Sheet

b) 22 gauge G. I. Sheet

c) Canvass connection with fire ressistance cloth complete as reqd.

Providing & fixing of following size of powder coated Aluminium construction supply/return air grill or Diffuser with 60% free area etc. complete as reqd. a) Supply air grill/ diffuser with volume control damper for room ( Size:As per requirment,area :less than or equal to 4 sq ft.)

b) Return air grill / Diffuser ( Size:As per requirment, area :less than or equal to 4 sq ft.)

c) Pdg. & fixing of air grill for ductable indoor unit of suitable size complete as reqd. (Size upto 4Sqft)

Supply & fixing of following type of damper made out of 18 gauge CRC/G I sheet used as fire damper,supply air damper or return air damper in main duct or branch duct or in return air path as per site requirement. i/c nut bolt, gasket etc. as required. a) Fire damper (Size: As per requirment,Area:less than or equal to 9 sq. ft.)

b) Volume control damper for supply air grill /diffurers ( Size:As per requirment,area :less than or equal to 4 sq ft.)

c) Volume control damper for package indoor / ductable indoor units./duct

a) Supplying 6mm thick Aluminium faced kini foam insulation & fixing with manufacturer recommended adhesive the following insulationon duct/ wall/ ceiling or roof etc. complete as reqd.

b) Pdg. & fixing Kini foam insulation / 9mm thick FR XPE pipe section insulation for refrigerant piping.

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

Pressure testing of the entire refrigerant circuits for ductable/package a.c.unit along with indoor and outdoor unit with nitrogen, pressure standing for at least 8 hr., vaccumzing & commissioning with appropriate refrigerant i/c supplying and filling sufficient quantity of regrigerant as per manufactureer recommendation for following A C units complete as reqd. a) 11.0 TR ductable/ package a.c. unit with 2 refrigerant circuits.

Supplying and filling the following refrigerants. a) R-22 gas charging/ gas top up

Pdg. & fixing following type of filter having 99.9% efficiency down to 5 microns suitable to fit in the ductable unit / package unit/duct/plenum at the supply air/return air path complete as reqd. a) Return air filter for A.C. units

Supplying, laying, fixing, testing and commissioning of following sizes PVC sheathed copper conductor cable on the existing surface as reqd. a) 4 x 10 Sq. mm Copper Armoured cable.

b) 4x1.5 Sq. mm

c) 17 Core unarmoured Cable

d) 2 x 16 Sq. mm Copper Armoured cable.

Fabricating & installing of following size cable tray made out with M. S. Slotted angle & square pipe or slotted sheet material i/c nut-bolt, screwa, supports and suspenders etc. for cable/ refrigerant piping complete as reqd. a) size up-to 200 mm width

b) size above 225mm width & up-to 300mm width

Supplying & laying of 8 SWG. GI wire on surface or on recess for loop earthing on the existing surface /Recess with main power cable etc. as reqd.

M. S. Structure work for i/c designing, fabricating at site as per site requirements i/c cutting, welding, fixing, painting with one coat of red oxide primer and two coats of enamel paint in approved shade etc as reqd. a) 40mm x 40mm x 5mm M. S. Angle iron.

b) 9mm M S rod

c) M.S. frame (stand type)/foundation for outdoor units of 5.0TR to 5.5TR ductable/package a.c.units complete as reqd..

d) M.S. frame/suspenders for indoor units of 5.0TR to 11TR ductable/package a.c.units complete as reqd..

Providing & making drain arrangement for A/C units with following pipe i/c Tee, Union, Socket & Elbow etc as reqd. (uPVC hard medium class) a) 25 mm dia (NB)

b) 32 mm dia (NB)

Pdg. & fixing Micro processor controled system in a metal encloure operating on 220V ,single phase A C supply for controlling the A C units in such a way that only one A C unit ,out off two A C units will operate at a time for a fixed period of time and there after next A c unit start operating and so on i/c system make closed loop in case of fault comes in the unit complete as reqd.

Pdg. & fixing automatic phase correction system for ductable A C unit which should work in such a way that as the series of phases changed from the 3 phase A C supply it will work and make the series phase correct so that the A C units operation does not effect i/c its wiring or providing & fixing of power saver i/c its wiring for 5.0 TR to 7.5 TR AC plant complete as reqd.

Pdg. & fixing automatic phase correction system for ductable A C unit which should work in such a way that as the series of phases changed from the 3 phase A C supply it will work and make the series phase correct so that the A C units operation does not effect i/c its wiring or providing & fixing of power saver i/c its wiring for 5.5 & 11.0 TR ductable/ Package AC plant complete as reqd.

Dismentalling of old package/ductable/split AC units i/c all associated works like ducting, piping, cabling, trays ; shifting the same to the store / designated location within the building premises as per the instructions of the engineer-in-charge.

Lifting & shifting of A.C units with the help of heavy labour & chain pully block from ground floor to the floor where the A C plantroom is situated complete as reqd.

Minor civil work/Wall opening/pota cabin cutting and making good/sealing complete as reqd.

Pdg. & fixing of electrical/mechanical switchgears complete as reqd. a) 63amp TPN MCB

b) 100amp TPN MCCB of 25KA Breaking capacity (Make-M/s L&T/GE/Legrand/C&S/ABB)

c) 200amp MCCB

Pdg. & Fixing PVC flooring i/c cleaning of floor spreading the adhesive, pasting the PVC sheet rolling with weight on the pasted sheet for proper fixing complete as reqd.

Provision of color coding of copper pipe with suitable color paint.

SITC of R.A. boxing made of 6 mm water prrof ply, slotted angle, fixing with fasteners nuts & bolts etc.

Providing MS wiremesh work with enamel paint and redoxide complete as reqd.

AC Guard CP-Corrision prevention coating for brazing joints, U band, interconnecting copper piping of indoor and outdoor a.c. units. (Note: Per Job Per Unit)

Johnson controls-Hitachi air conditioning India Ltd