SITC of AC units at various RSU/TE Building under EE(E) BCP, 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) Supply air grill/ diffuser with volume control damper for room (Size: As per requirment, area: less than or equal to 4 sqft.)

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) 7.5 TR AC unit

c) 5.0/5.5 TR AC unit

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

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) 4 x 4 Sq. mm Copper Armoured cable.

c) 4x1.5 Sq. mm

d) 17 Core unarmoured Cable

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

b) Width size not exceed 150mm

c) Size above 225 mm width & upto 300 mm width

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 / strip/ Channel iron.

b) 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.

c) MS Frame (Stand type/ wll bracket) or rubber mounted PAOS for outdoor AC units/ package units comlete 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)

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 or providing & fixing of power saver i/c its wiring for 5.0 & 11.0 TR ductable/ Package AC plant complete as reqd.

Providing & fixing of following insulation/ accoustic/ partition work as per site requirement for duct, wall, room, false ceiling or roof i/c painting with black jaipan paint, screw, nut bolt (IF reqd.) and grid size if required not less than 1200mm x 600mm with rectangle pipe/ MS angel or channel/ slotted angel etc completew as reqd. with the following materials. a)Pdg. & fixing duct insulation with 6mm thick closed cell fire retardant insulation.

Dismantalling 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 dismantled AC unit along with all accessories to another site under jurisdiction of EE(E) BCP 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.

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

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

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)

Pdg. & Fixing of mechanical item of package/ductable AC unit & other works complete as reqd. a) Drier for AC unit

b) Angel valve/pin valve for ref. circuit.

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

d) 3.75TR /5.5TR scroll 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

SITC of blower motor of 7.5TR AC unit

SITC of 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

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

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

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

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.

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)

Replacement of condensor coil for following rating ductable a.c.units including flushing of whole system and pressure testing with nitrogen gas, vaccumzing complete as required. (Note: Quantity of refrigerant, if any supplied by the agency shall be measured separately). a) 5.0/ 5.5TR

Replacement of evaporator coil of following rating ductable AC unit (single/twin circuit) including flushing of whole system and pressure testing with nitrogen gas, vaccumzing complete as required. (Note: Quantity of refrigerant, if any supplied by the agency shall be measured separately). a) 5.0/ 5.5 TR

M/s Merco Airconditioning Refrigeration Engineers