SITC of package/ductable AC unit at various RSU/TE Building under EE (Elect)KBN MTNL New Delhi (SH Repair and Associated Works)

Amount

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

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

Volume control damper for package indoor / ductable indoor units/duct

a) Supplying 6mm thick Metallic 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) 1 1/8"

Pressure testing with nitrogen, pressure standing for at least 8 hr., vaccumzing & commissioning with appropriate refrigerant for following A C units complete as reqd. a) 11.0 TR AC unit

b) 8.5/ TR AC unit

c) 7.5 TR AC unit

d) 4.0 TR/ 5.0/ 5.5/ 4.37 TR AC unit

e) 1.5 TR/ 2.0TR

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

b) 410 A/32 gas charging/ gas top up

Pdg. & fixing following type of filter having 85% efficiency down to 20 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) 4x4 Sq. mm Copper unarmoured cable.

e) 3x2.5 sq.mm copper conductor flexible 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

c) Width size not exceed 150mm

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/ MS Strip/ MS Chhanel/ MS angle of any size

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. suspenders for indoor units of 5.0TR to 11TR ductable/package a.c.units complete as reqd with the help of heavy labour/ trolly etc

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)

Providing & fixing of drain tray of 5.0/7.5 TR ductable AC unit

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 for 5.0 TR & 7.5 TR AC unit 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. with the help of crane/chain pully block & heavy labour

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.

Shifting of dismantelled AC unit along with all accessories to another site under jurisdiction of EE(E) KBN with the help of heavy labour and chainpully, transportation etc. as reqd.

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

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

b) 100amp TP 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)

Replacement of faulti mechanical item of package/ductable AC unit & other works complete as reqd. a) Angel valve/pin valve for ref. circuit. (old material shall be the property of contractor)

b) Drier for AC unit

c) 2.5 TR refurbished compresor suitable for Carrier/BSL/LG/Voltas/ Hitachi make twin ckt 5.0TR AC unit (Make : Carrier/Kirloskar/ Copeland)

d) 3.75TR /5.5TR refurbished compressor suitable for Carrier/BSL/LG/ Voltas/ Hitachi Make 7.5TR/ 11.0TR AC unit (Make : Carrier/Kirloskar/Copeland)

SITC of control wires remote indication suitable for carrier 5TR/7.5TR control kit of carrier panel

Rewinding of old defective blower motor of 7.5TR AC unit

Replacement of rewound condenser fan motor for AC unit

SITC of condenser motor capacity of 8MFD

SITC condenser fan for carrier make 7.5TR/5.0TR Unit

SITC of blower fan of carrier make 7.5TR/5.0TR unit

SITC of Control scanner or indication of reverse phase, high voltage etc. complete as reqd.

Replacement of new coil (Condenser coil)of following a.c. units including dismentalling the faulty coil and making proper size copper pipe connection brazing at joints etc. as requred. Old coil will be the property of contractor . (a) 1.5TR to 2.0 TR A.C unit

(b) 2.5 TR to 3.0 TR A.C. unit

(c) 4.0 TR A.C unit

(d) 5.0 TR to 5.5 TR A.C. unit

(e)7.0TR to 7.5 TR A.C unit

(f) 8.5 TR to 9.0 TR A.C. unit

Replacement of new coil (Evaporator coil) of following a.c. units including dismentalling the faulty coil and making proper size copper pipe connection brazing at joints etc. as requred. Old coil will be the property of contractor . (a) 1.0 TR to 2.0 TR A.C unit

(b) 2.5 TR to 3.0 TR A.C. unit

(c) 4.0 TR A.C unit

(d) 5.0 TR/ 5.5 TR A.C. unit

(e) 7.0 TR to 7.5 TR A.C. unit

(f) 8.5 TR to 9.0 TR A.C. unit

(g) 11.0 TR A.C. unit

SITC of remote control or indication of on/off position of AC unit etc. complete as reqd.

Chemical srevicing of ductable/packages with the help of water & chemical of outdoor a.c. unit.

Sitc of L shaped duct connection at the outlet of packaged/ ductable a.c. unit suitable for grille fixing.

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 for 5.5 TR & 8.5 TR AC unit complete as reqd.

M/s Merco Airconditioning Refrigeration Engineers