Associated work of AC units installed at different T.E Building and RSUs under EE(E)LR,MTNL,New Delhi

Amount

Providing and installing following size soft/hard copper pipe including cutting, bending, jointing, brazing etc as reqd. for hot and liquid refrigerant line complete as required as per site requirement. a) 7/8"

Replacement of faulty compressor with the factory repaired compressor i/c dismantling of the faulty one from site and re-fixing the new one etc as reqd. a) 2.0 TR / 2.5 TR.

b) 5TR / 5.5 TR.

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) 1.5 TR / 2.0 TR (nominal capacity) AC unit.

b) 4.0 TR / 5.0TR / 5.5 TR (nominal capacity) AC unit.

c) 7.0 TR / 7.5 TR (nominal capacity) AC unit (each Circuit).

d) 8.5TR / 8.75 TR /9TR(nominal capacity) AC unit (each Circuit).

e) 11.0 TR / 12 TR (nominal capacity) AC unit (each Circuit).

Supplying and fixing new evaporator coils for following AC unit including dismantling the faulty existing evaporator coil and making proper size copper pipe connection, brazing at joints etc as reqd. a) Evaporator coil for 1.5 TR / 2 TR (nominal capacity) AC unit.

b) Evaporator coil for 7.0 TR / 7.5 TR (nominal capacity) AC unit.

c) Evaporator coil for 8.5 TR/8.75TR/9TR (nominal capacity) AC unit.

d) Evaporator coil for 11.0 TR (nominal capacity) AC unit.

e) Evaporator coil for 4 TR /5TR /5.5 TR (nominal capacity) AC unit.

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 (suitable for 4.0/ 5.0/ 5.5/ 7.5 TR AC)

Supplying, laying and fixing of following sizes pvc sheathed copper conductor armoured / unarmoured cable on the existing wall / ceiling for power / control cable etc making connections and testing etc complete as reqd as per site location. (Make: Havells/ KEI/ Polycab/Gloster/National) a) 4 x 10 sq. mm copper armoured cable.

b) 4 x 6 Sq. mm copper armoured cable.

c) 6 x 1.5 Sq. mm copper armoured cable.

d) 17 core unarmoured cable.

e) 3 core 2.5 Sq.mm flexible copper cable.

Supplying and fixing following new condenser coils including dismantling the existing condensor coil and making proper size copper pipe connection, brazing at joints etc as reqd. a) Condenser coil for 1.5 TR / 2 TR (nominal capacity) AC unit.

b) Condenser coil for 4 TR / 5 TR / 5.5 TR (nominal capacity) AC unit.

c) Condenser coil for 7.0 TR / 7.5 TR (nominal capacity) AC unit.

d) Condenser coil for 8.5 TR / 8.75 TR/9TR (nominal capacity) AC unit.

e) Condenser coil for 11.0 TR (nominal capacity) AC unit.

Providing & making drain arrangement for AC units with following pipe i/c Tee, Union, Socket & Elbow etc as required. a) 40 mm dia medium class PVC pipe.

b) 25 mm dia medium class PVC pipe.

c) 20 mm dia drain pipe.

Supplying and installing of following size M.S cable tray made out with following M. S. Slotted angle & squire pipe or slotted sheet material suspended from the ceiling with M.S. suspenders including screws,bolts & nuts, painting etc as required. a) Width size not exceeding 150 mm.

b) Width size above 150mm not exceeding 300mm.

c) Width size above 300mm not exceeding 500mm.

Providing and fixing 8 SWG dia GI wire on surface or in recess for loop earthing along with existing surface/recessed conduit/ submain wiring/power cable as required.

Providing and making MS structure work such as MS platform/duct supports/tray supports/frame for indoor and outdoor AC units i/c cutting, welding, painting with redoxide and then enamel oil paint of approved color etc. complete as reqd. as per site location.

AC Guard CP-Corrosion, prevention coating for brazing joints, U bend, interconnecting copper piping of outdoor and indoor units.

Providing and fixing M.S. suspenders for indoor units of 5.0TR to 11TR ductable/package AC units complete as reqd with the help of heavy labour/ trolly etc.

Pdg. & fixing of electrical/switchgears used for AC plant/centifugal fan/air washer & other works complete as reqd. a) 63 Ampere rating TPN SFU along with fuse/ FPMCB. (Make: L&T/ GE/ Legrand/ C&S/ ABB/ Havells)

b) 100 Ampere rating TPMCCB. (Make: L&T/GE/Legrand/C&S/ABB/Havells)

Providing and charging of R-22 gas for top up of refrigerant in the AC units complete as required.

SITC of control wires remote indication suitable for 5TR/7.5TR/11TR control kit of existing make AC panel etc complete as required as per site location.

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

Providing and fixing of 6mm thick cross linked polyethylene insulation for drain / copper piping in order to protect it from air borne impurities complete as reqd. as per site location.

Providing and fixing of supply air grill for ductable indoor AC unit of suitable size complete as required. (Size upto 4sqft.)

Dismentalling of drain pipes, copper piping, cabling, cable tray and shifting to desired location as given by Engineer-In-Charge.

Dismentalling of old package/ductable indoor and outdoor AC unit including its electrical /mechanical connection,old GI duct/insulation complete as reqd and shifting it to the desired location as given by Engineer-In-Charge.

Shifting including dismantling of 1.5 TR / 2 TR / 2.5 TR AC units i.e. disconnects the connection with the help of brazing, removing drain piping, disconnecting the electrical connection and then removing the complete unit (indoor & outdoor), loading / unloading and shifting the unit within the building etc complete as reqd.

Supplying and fixing new condenser coils for storage type drinking water cooler (Cooling capacity:60 Ltrs; Storage capacity:120 Ltrs) including dismantling the existing faulty condensor coil and making proper size copper pipe connection, brazing at joints, pressure testing with nitrogen, pressure standing for at least 8 hr., vaccumzing & commissioning with appropriate refrigerant etc complete as reqd.

Providing and fixing PCB in the existing AC units of 1.5 TR to 5 TR AC units i/c connection, testing etc. complete as required.

Minor civil work such as cutting, widening and opening the floor/wall and other civil work for installing refrigerant piping/drain piping/ ducting/electrical cabling for each cutout including finishing the same complete as reqd.

Less credit for dismantled material and dismantled material shall be the property of contractor.

MEP Engineering and Contracting Co.