REPLACEMENT OF BER CENTRAL TYPE AIR CONDITIONERS AND AUXILIARY WORKS AT GTRE BENGALURU

Amount

Supply, install, testing and commissioning of 03 Nos water cooled scroll condensing units (3 x 15TR) each of 15 TR (nominal cooling capacity) factory assembled microprocessor controlled having scroll compressor hermetically sealed unit using R-407 refrigerant complete with suction & discharge, shut off valves, automatic capacity control with thermostats and solenoid valves, built in suction strainer, oil pump not gas muffler, heat wheel, oil pressure, safety switch etc., all as specified alongwith 03 Nos guage panel complete with HP / LP cutouts, oil safety switch, suction, discharge & oil pressure gauge, 03 Nos shell and tube type water cooled condenser MS shell and integrally finned copper tubes complete with safety valve, drain valve, water inlet and outlet valves, hot gas inlet and liquid outlet isolating valves, thermometer and pressure gauges at water inlet / outlet and purge valve with condenser entering water temperature of 30 degree C and leaving temperature of 35 degree Centrigrade with condenser fouling factor 0.000250F sq.ft hr / Btu; complete all as specified and directed.

SL. ITEM NO. 1.00 CONTD... 03 Nos stands fabricated out of MS channel / angle iron of suitable size for mounting compressor, motor and condensor; 03 sets of neoprene rubber anti-vibration ribbed pads with MS channel in foundation etc., complete as per manufacturer's instructions for installation of the plant; Bright annealed copper heavy duty refrigerant piping for suction, discharge and liquid line complete with fittings valves etc., Suction line should be insulated; First charge for R-407C refrigerant and oil for the complete plant all as specified and directed to be installed to achieve the inside temperature 20 degree Celsius ± 2 degree Celsius and RH 55% ± 5%. MAKE:- Model No. WCUS1-015A of BLUE STAR or techno-commercially equivalent model in VOLTAS / CARRIER / DAIKIN

Supply, install, testing and commissioning of 01 No water cooled scroll condensing unit of 13 TR (nominal cooling capacity 12.5 TR) factory assembled microprocessor controlled having scroll compressor hermetically sealed unit using R-407 refrigerant complete with suction & discharge, shut off valves, automatic capacity control with thermostats and solenoid valves, built in suction strainer, oil pump not gas muffler, heat wheel, oil pressure, safety switch etc., all as specified alongwith 03 Nos guage panel complete with HP / LP cutouts, oil safety switch, suction, discharge & oil pressure gauge, 03 Nos shell and tube type water cooled condenser MS shell and integrally finned copper tubes complete with safety valve, drain valve, water inlet and outlet valves, hot gas inlet and liquid outlet isolating valves, thermometer and pressure gauges at water inlet / outlet and purge valve with condenser entering water temperature of 30 degree C and leaving temperature of 35 degree C with condenser fouling factor 0.000250F sq.ft hr / Btu; 03 Nos stands fabricated out of MS channel / angle iron of suitable size for mounting compressor, motor and condensor; Three sets of neoprene rubber anti-vibration ribbed pads with MS channel in foundation etc complete as per manufacturer's instructions for installation of the plant; complete all as specified and directed.

SL. ITEM NO. 2.00 CONTD... Bright annealed copper heavy duty refrigerant piping for suction, discharge and liquid line complete with fittings valves etc. Suction line should be insulated; First charge for R-407C refrigerant and oil for the complete plant all as specified and directed to be installed to achieve the inside temperature 22 degree Celsius ± 2 degree Celsius and RH 55% ± 5%. MAKE:- Model No. ACWCDS013DPMNIXIP of VOLTAS or techno-commercially equivalent model in BLUE STAR / CARRIER / DAIKIN. Notes for item Nos.1 & 2 here-in-before:- The rate quoted by the contractor shall deemed to be inclusive of the following: - (i) The initial charging of refrigerant gas. (ii) The testing of the plant after installation. (iii) The scope shall include thermo meter, pressure gauges, air vent, civil works, cabling and other work in complete to make the plants totally functional.

Supply, install, testing and commissioning of AHU of CFM 12,000 of sheet metal cabinet type double skin air handling units with listed thickness PUF panels (25 mm thick) with six row deep cooling coil and 50mm (min TSP) with all accessories complete with fan section with DIDW centrifugal fan backward curved fan with suitable electric motor, TEFC squirrel cage induction motors for operation on 415 Volts, 3 phase, AC supply with 'V' belt and belts guard; Insulation of AHU's all as per OEM design & recommendations; Humidistat will be provided to control RH; Heater bank of 9 KW to be arranged in three banks of 3 KW each hearing strips for maintaining RH in range of 55% ± 5%; each and suitable expansion valves alongwith set of prefilter with 90% efficiency down to 5 micron and fine filter with 95% efficiency down to 3 micron, double skinned plenum of 50mm thick with 48Kg / cm3 PUF insulation alongwith factory fabricated aluminium channels alongwith necessary hanging arrangement and fire dampers in the supply air duct; ; complete all as specified and directed. MAKE:- ZECO / BLUESTAR / CARRIER / HITACHI

Supply, install, testing and commissioning of AHU of CFM 6400 of sheet metal cabinet type double skin air handling units with listed thickness PUF panels (25 mm thick) with six row deep cooling coil and 50mm (min TSP) with all accessories complete with fan section with DIDW centrifugal fan backward curved fan with suitable electric motor, TEFC squirrel cage induction motors for operation on 415 Volts, 3 phase, AC supply with 'V' belt and belts guard; Insulation of AHU's all as per OEM design & recommendations; Humidistat will be provided to control RH; Heater bank of 4.5 KW to be arranged in three banks of 1.5 KW each heating strips for maintaining RH in range of 55% ± 5%; each and suitable expansion valves alongwith set of prefilter with 90% efficiency down to 5 micron and fine filter with 95% efficiency down to 3 micron, double skinned plenum of 50mm thick with 48Kg / cm3 PUF insulation alongwith factory fabricated aluminium channels alongwith necessary hanging arrangement and fire dampers in the supply air duct; ; complete all as specified and directed. MAKE:- ZECO / BLUESTAR / CARRIER / HITACHI

Supply, install, testing and commissioning of FRP induced draft cooling with spray section, honey comb fills, basin, TEFC motor, intake bird screen type cooling tower of capacity 30 TR with suitable foundation and gun metal float valve of suitable sizes and make up HDPE water tank of 2000 ltrs capacity & bottom level should be 2.00m above the cooling tower sump; complete all as specified and directed. MAKE:- MIHIR / PAHARPUR / DELTA / POLO / ADVANCE

Supply, install, testing and commissioning of FRP induced draft cooling with spray section, honey comb fills, basin, TEFC motor, intake bird screen type cooling tower of capacity 15 TR with suitable foundation and gun metal float valve of suitable sizes and make up HDPE water tank of 1000 ltrs capacity & bottom level should be 2.00m above the cooling tower sump; complete all as specified and directed. MAKE:- MIHIR / PAHARPUR / DELTA / POLO / ADVANCE

Supply, install, testing and commissioning of monoblock centrifugal condenser cooling water pumping sets having discharge of 19 LPS and delivery head 16m alongwith necessary valves in suction and delivery line of 100% capacity (01 No standby) of and suitable for operation on 3 phase, 50 cycles, 415 volts, AC supply hydraulic vane type water meter for flow measurement with providing a pressure gauge in each pump set of suitable capacity alongwith suitable foundation with neoprene rubber anti-vibration ribbed pads, suitable starter with overload protection and single phase preventor ; complete all as specified and directed. MAKE:- Model No. KDS-830++ of KIRLOSKAR or techno-commercially equivalent model in CROMPTON GREAVES / GRUNDFOS / BEACON

Supply, install, testing and commissioning of monoblock centrifugal condenser cooling water pumping sets having discharge of 3.3 LPS and delivery head 30mtr alongwith necessary valves in suction and delivery line of 100% capacity (01 No standby) of and suitable for operation on 3 phase, 50 cycles, 415 volts, AC supply hydraulic vane type water meter for flow measurement with providing a pressure gauge in each pump set of suitable capacity alongwith suitable foundation with neoprene rubber anti-vibration ribbed pads, suitable starter with overload protection and single phase preventor ; complete all as specified and directed. MAKE:- Model No. KDS-830++ of KIRLOSKAR or techno-commercially equivalent model in CROMPTON GREAVES / GRUNDFOS / BEACON

MS heavy grade pipes for condensor piping, cut to required length and installed with welded joints including all necessary fittings such as elbows, tees, bends, short pieces etc., and conforming to the specifications and painting with one coat of red oxide primer and two coats of synthetic enamel paint complete including providing necessary steel supports, complete all as specified and directed. The pipes shall be of the following sizes:-

50mm dia

40mm dia

Hard drawn copper piping for Liquid and Gas line SITC of Copper piping of size 31.8mm and 15.9mm for 15 TR and 30 TR DX Units (Set of two pipes) with 9mm Tubular Insulation complete all as specfied and as directed .

Supply, laying, jointing, testing and commissioning 1100Volts grade heavy duty XLPE insulated LT under ground cable, PVC sheathed, ISI marked, conforming to IS-7098 (Part-I, 1988) galvanised steel strip armoured heavy duty multi stranded copper conductor laid in trenches / passed through pipe / duct wall with clamps made out of mild steel flat iron including fixing accessories like brass cable glands double compression type, lugs, nuts, bolts, washers etc., of following sizes complete all as specified and as directed.

16.0 sq.mm copper armoured cable 4 core

10.0sq.mm copper armoured cable 4 core

6.0 sq.mm copper armoured cable 4 core

4.0 sq.mm copper armoured cable 4 core

2.5 sq.mm copper armoured cable 4 core

1.0 sq.mm copper armoured cable 4 core

Supply and laying PVC drain pipe of 32.5 mm dia with all fittings and supports complete all as specified and directed.

Supply, install, testing and commissioning of air distribution system comprising of supply and return air ducts duly insulated for air conditioning of building including interconnectors as required from AHU to the conditioned space comprising of calss VIII galvanised sheet ( nominal galvanization of 120 gm / sqm surface area ) with suitable supporting arrangements and bracing supply / fresh air grills on sheet metal frame work duly painted / finished to match with the existing ceiling complete for the following sizes all as specified and as directed.

20 Gauge

22 Gauge

24 Gauge NOTE (for Sl. No. 13.01 to 13.03 here-in-before) :- (a) Lock Forming Quality prime material alongwith mill test certificates. (b) Samples of raw material subject to approval and tested for thickness and zinc coating at contractor’s expense. (c) All duct construction and installation shall be in accordance with IS standards. (d) The cost of thermal insulation will be measured and paid seperately under item No. 15 here-in-after

Acoustic insulation for supply air duct using 10mm thick Class 1 rating Open Cell nitrile rubber with density of 140 - 180 kg / m³. VOC level should not exceed more than 50 grms / Litre of open cell structures 10mm thickness ; complete all as specified and directed.

Supply and fixing Thermal insulation for supply air duct using 6mm thick class "1" Closed cell nitrile rubber based Self Adhesive elastomeric insulation with reinforced alumium foil over the exposed insulation. VOC level should not exceed more than 50 grms / Litre. Insulation manafactured as per ASTM E 84 test & which should also meet NFPA 90A supplementary materials for air distribution system which should not absorbs less 0.2% water by volume (ASTM c 209), should not support microbial growth (ASTM C1071, G21, G22) and should emit objectionable odours (ASTM C 665) and should have thermal conductivity of 0.27 ( R - 2.78 in 3.4" thickness) and water vapour permeance of 0.10. Joints should be sealed with 50 mm wide 3 mm thick self adhesive tape & for tail-end ducting 9mm thick - CLASS -1- material ; complete all as specified and directed.

Supply and fixing Fire dampers automatic type with fusible link (CPRI Certified) and operated with stainless steel spring made out of 16 SWG GI sheet to be provided in Unit mount as per standards complete with necessary supports and fastners ; complete all as specified and directed.

Supply and fixing Powder coated, extruded aluminium, removable center core type, 4 way supply air diffusers without aluminium collar damper of aluminium construction of the following neck sizes with opposed blade damper type. The diffuser shall be mounted in the GI box (not in scope), with inlet connector suitable for flexible duct. GI Box & Flexible duct quantified seperately ; complete all as specified and directed.

450 x 450mm (Neck Size)

375 x 375mm (Neck Size)

Supply and fixing Powder coated, extruded aluminium, removable center core type, return air diffusers of aluminium construction of the following neck sizes. ; complete all as specified and directed.

450 x 450mm (Neck Size)

375 x 375 mm (Neck Size) NOTE:- All are of 596 x 596 mm Outer to Outer Size - Type can be flat type / rectangular with colour as approved.

Supply and fixing Volume Control Dampers - (20G) Volume made out of 100 x 40 x 1.55mm thick galavanised steel frame and blades of 1.55mm galavanised sheet steel ; complete all as specified and directed.

Supply and fixing Spill Air Boxes - Expansion Plenum 525 x 525 x 450mm High Sheet Metal Spill air boxes made out of 26 GI sheet for connecting the diffuser outlet & flexible connection from the main duct. Supporting chains of Spillair boxes ; complete all as specified and directed.

Supply and installation of catch all drier for refrigeration circuit ; complete all as specified and directed. MAKE:- DANFOSS / EMERSON / SPORLAM

Supply and fixing fresh air dampers made out of 100 x 40x1.55mm GSS frame and blades of 1.5mm with GSS cowl and bird screen ; complete all as specified and directed.

300mm x 400mm

300mm x 300mm

Supply and fixing butterfly valves, PN16 complete with companion flanges, nuts, bolts, washers and gaskets etc., conforming to relevant IS, complete all as specified and directed of the following size:-

50 mm dia

Supply and fixing gun-metal gate valve of size 40 mm dia with iron wheel head, screwed both ends for iron pipe, complete all as specified and directed. MAKE:- ZOLOTO / MITTAL / LEADER / NETA

Supply and fixing PURGE/ DRAIN Valves made of brass 12 mm dia ; complete all as specified and directed.

Supply and fixing `Y' Strainer of following sizes ; complete all as specified and directed.

50 mm dia

40 mm dia

Supply and fixing of NRV of following diameter for condensers circulating pumps complete all as specified and directed.

50 mm dia

40 mm dia

Supply and install, testing and commissioning indoor type, dust / vermin proof LT electric panel conforming to IS/ IEC : 61439-1&2 with internal arc containment with rated fault level 65KA for 1 sec consisting of separate compartment for each out going feeders with locking arrangement for each feeder fabricated out of 2 mm thick MS sheet floor mounting type with suitable size of base frame/channel and legs made of suitable angle iron with powder coated (7 tank process) after precoated primer including necessary PCC (1:3:6) type C2 foundation of panel board including earth work and comprising the following AC Plant, complete all as specified and directed :- (a) Bus bar chamber of 3 phase and neutral 4 strip 415 volts with 240 Amps copper strip - 1 set (b) Moulded Case Circuit Breaker 4 pole 16 KA breaking capacity (Icu) 100 Amps rating with adjustable over load (70% to 100%) with thermal Magnetic release & fixed magnetic setting - 1 No (In coming) (c) Moulded Case Circuit Breaker 3 pole 16 KA breaking capacity(Icu) 40 Amps capacity rating with adjustable over load (70% to 100%) with thermal Magnetic release - 4 Nos (Out going for 3 Nos Compressors and 1 No AHU) (d) MPCB 3 pole 16 KA breaking capacity (Icu) with nominal rating 23 Amps with adjustable over load (70% to 100%) with thermal Magnetic release-03 Nos. (02 Nos for condensing pumps and 1 No. for Cooling tower)

SL. ITEM NO. 27.00 CONTD... (e) DOL Starter suitable for maximun motor out put 7.5 HP pumpsets/Cooling tower relay max range 13-22 Amps - 3 Nos MAKE:- Cat No : SS96228 and Model DOL MK1 of L&T or techno-commercially equivalent model in BCH / SIEMENS / C&S (f) MCB 4pole, 20 Amps, 10 KA -01 No (for heater bank) along with 01 No 4 pole power contactor with AC1 rating 25 Amps conforming to IS/IEC-60947-4-1 (g) Three phase Volt meter (0-500Volts ) digital type . (h) Three phase Ammeter (0-200Amps ) Digital type with 3 Nos CT's (j) LED Indicator lamp Red, Yellow, Blue - 01 Set (k) Complete internal wiring with suitable copper condutor wires - 1 Lot (l) Provision of extra space for one more out going feeder suitable for MPCB / MCCB Note : (i) All termination of existing cable should be provided with aluminium lugs/thimbles and suitable size of glands & rate for the same is deemed to be included in the rate quoted for the item. MAKE for MPCB / MCCB / MCB / CONTACTOR :- SIEMENS / ABB / L&T / LEGRAND / SCHNEIDER / C&S MAKE for Panel :- ABB / SIEMENS / L &T / SCHNEIDER / LEGRAND / C&S

Supply, install, testing and commissioning indoor type, dust / vermin proof LT electric panel conforming to IS/ IEC: 61439-1&2 with internal arc containment with rated fault level 65KA for 1 sec consisting of separate compartment for each out going feeders with locking arrangement for each feeder fabricated out of 2mm thick MS sheet floor mounting type with suitable size of base frame/channel and legs made of suitable angle iron with powder coated (7 tank process) after precoated primer including necessary PCC 1:3:6 type C2 foundation of panel board including earth work and comprising the following, complete all as specified and directed:- (a) Bus bar chamber of 3 phase and neutral 4 strip 415 volts with 100 Amps copper strip - 1 set (b) Moulded Case Circuit Breaker 4 pole 16 KA breaking capacity (Icu) 63 Amps capacity rating with adjustable over load (70% to 100%) with thermal Magnetic release - 1 No (In coming) (c) Moulded Case Circuit Breaker 3 pole 16 KA breaking capacity 40 Amps capacity rating with adjustable over load (70% to 100%) with thermal Magnetic release - 2 Nos (Out going for 1 No Compressor and 1 No AHU) (d) MPCB 3 pole 16 KA breaking capacity (Icu) with nominal rating 23 Amps with adjustable over load (70% to 100%) with thermal Magnetic release - 03 Nos (Out going, 02 Nos for Condensing pump and 1 No. for Cooling tower)

SL. ITEM NO. 28.00 CONTD... (e) DOL Starter suitable for maximun motor out put 7.5 HP pumpsets/Cooling tower relay max range 13-22 Amps - 3 Nos MAKE:- Cat No : SS96228 and Model DOL MK1 of L&T or techno-commercially equivalent model in BCH / SIEMENS / C&S (f) Three phase Volt meter (0-500Volts ) digital type . (g) Three phase Ammeter (0-200Amps ) Digital type with 3 Nos CT's (h) LED Indicator lamp Red, Yellow, Blue - 01 Set (j) Complete internal wiring with suitable copper condutor wires - 1 Lot (k) Provision of extra space for one more out going feeder suitable for MPCB / MCCB (l) MCB 4 pole, 16 Amps, 10KA - 01 No (Heater bank) along with one number 4 pole power contactor with AC1 rating 16 Amps conforming to IS / IEC-60947-4-1 NOTE :- (i) All termination of existing cable should be provided with aluminium lugs/thimbles and suitable size of glands & rate for the same is deemed to be included in the rate quoted for the item. MAKE for MPCB / MCCB / MCB / CONTACTOR :- SIEMENS / ABB / L&T / LEGRAND / SCHNEIDER / C&S MAKE for Panel :- ABB / SIEMENS / L &T / SCHNEIDER / LEGRAND / C&S

Supply and Instalation of ladder type cable trays for laying copper pipe and cables with weldless construction, factory assembled bolted rung type, Pre-galvanized GI as per IS 2629, made out of Hot Rolled steel sheets of 2.0mm thickness conforming to IS 1079 Grade O. Finish shall be Hot Dip Galvanized 65 Microns for 2.0mm and above thick material conforming to IS 2629. Couplers shall be 2mm thick (Pre-Galvanized), Plate type with 4 holes. pre galvanized steel runner and slotted rungs. Including cable support system. The rate shall include bends, angles, Tees, supports and all accessories complete Supports Shall be provided at every 1200mm. The cost of supports to be included. The cost of 2 runs of 25x3mm GI Strip to be included in the cost of the cable tray. Supports must be made out of MS L/U angle type for cable tray width of 450mm and above. For Less than 450mm width tray support with hi-tech threaded rods & anchor fasteners all as per standards 300 x 50mm Size; complete all as specified and directed. MAKE : PROFAB or techno-commercially equivalent make as approved by GE

Earthing complete with GI earth plate electrode 600mm x 600mm x 6.3mm thick buried directly in ground vertically to a depth of not less than 2.25m deep below ground level with the top edge of earth plate at a depth of not less than 1.5m below ground level connected to GI earth strip of size 25mm x 4mm by means of bolts, nuts, washers of galvanised iron or steel, GI earth strip shall be protected by 40mm dia GI pipe 'medium grade', watering pipe 20mm dia GI pipe 'light grade', GI wire meshed funnel, alternate layer of charcoal and salt on all side to earth plate upto a thickness of 150mm, filling of black cotton soil in earth pit upto GL, and connected to earth plate including necessary excavation & earthwork, PCC (1:3:6) type C-1 earth chamber, 50mm thick RCC cover (1:2:4) type B1 mix with 8mm dia nominal reinforcement @ 100mm c/c both ways etc complete all as shown in electrical plate No. 3 of SSR Part - I (2009) connected to earthing test point, including testing on completion, with and including taking down of existing earthing any type and depositing the retrieved material in the storeyard of AGE E/M of GE(I) R&D (East) Bengaluru, complete all as speciified and as directed. NOTE:- (a) Rate quoted shall deemed to include cost of excavation in any type of strata, RFR and removal upto 50metre, PCC pit, funnel and RCC cover plate. (b) Earth continuity conductor beyond 7.5m length, GI protection pipe as applicable shall be measured and paid separately under respective item of this Schedule.

Galvanised Iron Earth continuity conductor of size 25 x 4 mm fixed to wall /or buried in ground or fixed to poles or any other indicated position with suitable size of clamps, nuts and bolts for loop earthing etc., complete all as specified and directed.

GI tubing light grade, galvanised with all fittings including short lengths, fixed to ceilings and walls with and including provision of suitable size of clamps or laid in floors, complete with all fittings (such as bends, elbows, Tee, short pieces, connectors, back nuts, diminishing pieces, caps, plugs and unions etc.,), 40mm bore of pipe, laid as protection pipe to earth continuity conductor ; complete all as specified and directed.

GI tubing light grade, galvanised with all fittings including short lengths, fixed to ceilings and walls with and including provision of suitable size of clamps or laid in floors, complete with all fittings (such as bends, elbows, Tee, short pieces, connectors, back nuts, diminishing pieces, caps, plugs and unions etc.,), 20mm bore of pipe, laid as protection pipe to earth continuity conductor ; complete all as specified and directed.

Non chemical type on line scale preventor on line electrostatic non chemical water treatment system with electrically operated control panel to be fixed on main header suittable for AC Plant 3 x 14 TR/1 x 10 TR. The outer casing shall be of 304 grade stainless steel with both ends flanged and capable preventing scale formation. The same shall be suitable for water flow rate 480 LPM each dia of pipe 3"/80 MM in condenser circuit. The work includes cutting of existing GI/MS sub header and providing mild steel flange heavy duty and joining with reducer, nut, bolts, gasket at both ends with welding and modification in existing system as required, complete all as specified and directed.. MAKE:- Electostatic scale off online non chemical scale preventer system "Scale-off Model No 3022A / SCALOID / DOLPHIN

Dismantling existing old vintage / unserviceable central type AC plants with all accessories like cooling tower, compressor, AHU units, pumps sets alongwith pipe lines, condensors & LT panel boards with cables including duct complete, making good surfaces of distrubed area and shifting / depositing the same to AGE E/M Store Yard GE (I) R&D (East) Bengaluru, complete all as speciifed and directed for the following capacities :-

1 x10 TR capacity

3 x 15 TR capacity

Supply and fix dial type temperature gauge with thermowell all as specified and directed. MAKE:- H GURU / BAUMER / NI / G GURU

Supply and fix pressure gauge with syphon valve all as specified and directed. MAKE:- H GURU / BAUMER / NI / G GURU

Supply and fix water flow switch all as specified and directed. MAKE:- HONEYWELL / ANUGY / INDFOSS

CHAVA CONSTRUCTIONS AND ELECTRICAL PROJECTS

N K BUILDERS

AIRFRAME

Comfort Systems