SITC of Ductable AC Units under EE(E ) Project, MTNL, New Delhi.

Amount

SITC of following type (nominal capacity) ductable AC units complete with outdoor unit, indoor unit, having single/double compressor operating on 3 phase, 415v ± 5%, 50Hz A.C. supply, with indoor unit air circulation 400 CFM/TR & all other associated accessories like various motors, coils complete in all respect and capable for performing cooling, air circulation, filtration , Microprocessor, starter pannel, temperature sensors and chorded remotes etc. complete as required. (a) 11.0 TR Ductable AC Unit (Two circuit with one indoor)

(b) 5.5TR (Single circuit) /5.0TR (Twin Circuit) ductable AC Unit

(c) 8.5 TR ductable AC Unit (Two circuit with one indoor)

Pressure testing with nitrogen, pressure standing for at least 8 hrs. vaccumzing & commissioning with refrigerant of following AC unit complete as reqd. (a)11.0TR/ 8.5TR AC unit

(b) 5.5TR/5.0TR ductable AC Unit

Providing and fixing of hanging arrangements for following AC ductable units including MS rods, channel, angle, fastener, scap folding complete as required (a) 11.0 TR/ 8.5TR Ductable AC unit

(b) 5.5 TR/5.0TR ductable AC Unit

Pdg. & installing copper pipe (soft/hard pipe) including cutting bending, joining, brazing etc as reqd. for hot and liquid refrigerant line. (a) 5/8"

Fabricating & installing of following size copper piping/ cable tray made out with M.S. Slotted angle/factory fabricated tray i/c nut bolt, screw, etc. as reqd. (a) Width size not exceeding 150mm

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

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

Supplying & laying of following sizes PVC sheathed armoured copper conductor cable on the existing wall / ceiling for Power / Control cable etc. as reqd. : a) 4C x 10 Sq. mm Copper Armoured cable.

b) 4c x 6 Sq. mm Copper Armoured cable.

c) 4c x 4 Sq. mm Copper Armoured cable.

d) 4c x 1.5 Sq. mm Copper Armoured cable.

e) 2c x 1.5 Sq. mm Copper Armoured cable

f) 3 cx 2.5 Sq. mm Copper Armoured cable.

Supply and fixing of following type of damper made out of 18 gauge CRC/GI sheet used as fire damper, supply air damper or return air damper in the main duct or branch duct or in return air path as per site requirement i/c nut bolts, gaskets etc. as required. a.) Volume control damper for the ductable unit to control the supply air quantity as required (Size upto 4sqft.)

Lifting and shifting of 11TR/8.5TR AC units from ground floor upto the site where the AC room is situated with the help of chain pully and heavy labor complete as required.

Lifting and shifting of 5.5TR/5.0TR AC units from ground floor upto the site where the AC room is situated with the help of chain pully and heavy labor complete as required.

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.

Supply & fixing of factory fabricated rectangular type G.I. sheet metal ducting i/c air mixing, air distribution system, complete thickness gauge i/c nut bolts & gasket etc. as required. (a) 24 gauge G.I Sheet

b) 22 gauge G.I. Sheet

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

Providing and fixing of flexible canvasconnection for package and ductable unit with G.I. frame I/c nut bolt etc. complete as reqd.

Providing & making drain arrangement for A/C units with following pipe i/c Tee, Union, Socket & Elbow etc as reqd. PVC hard medium pipe shall be used (a) 40 mm dia. Drain pipe

(b) 25 mm dia. drain pipe

Providing and fixing of 9mm thick cross linked polyethylene insulation for copper piping in order to protect it from air borne impurities complete as reqd. as per site location.

Providing and fixing of 6mm thick cross linked polyethylene insulation for drain piping 25mm in order to protect it from air borne impurities complete as reqd. as per site location.

Providing and fixing of dryer for removing moisture and filtration of gas complete as required.

Providing and fixing of liquid line Danfos make 5/8" dia ball valve including silver brazing pressure testing with nitrogen gas complete as required

Providing and fixing of Al. powder coated supply air/return air grills.

Providing and fixing of Aluminium powder coated supply air/return air diffusers complete as required.

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

Supply and fixing of M.S. supply air grill/diffuser damper as per site requirement i/c nut bolts, gaskets etc. as required.

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

Minor civil work such as cutting, winding and opening the floor/wall and other civil work for installing refrigerant piping, Ducting and electrical cabling for each cutout complete as reqd.

Providing and fixing of Duct acoustic insulation with fibre glass 25mm thick & 24kg density & tissue paper covered with Aluminium perforated sheet complete as required.

Providing and fixing of insulation on ducting with 6mm thick nitrile rubber closed cell fire redundant insulation with one side aluminium foil faced etc. complete as required.

VOLTAS LIMITED