Provision of VRF system for COMSTAN CHN Regional Commanders Secretariat COS Secretariat and Conference hall at CG RHQ (E) under GE (I) (CG) Chennai

Amount

Supply , install ,test and commission Variable Refrigerant Flow (VRF) System with multi indoor unit without door units including individual controller for cooling type operation ,outdoor units equipped with highly efficient scroll compressor with inverter type compresser special acrylic recoated heat exchanger .low noise condenser fan ,auto check function for connection error having interconnected control wiring between IDU(Indoor unit),ODU (Outdoor unit)and control panel and refrigerant piping housed in compact housing duly powder coated complete as required for trouble free operation and R 410 A / R 32 Refrigerant comprising of the following specification : VRF OUTDOOR UNIT: 22 HP ODU with Cooling (i) Highly Efficient Inverter Compressor : The unique design of the inverter compressor ensures that the refrigerant is directly injected in to the compressor chamber.The suction gas enters directly in to the scroll there is no super heat gain due to compressor motor assembly.THis results in to effic iency enhancement by upto 3%. (ii) VRF units are fitted with 100% inverter compressors.The unique logic of the system is that it optimally loads compressors in such a way that maximum efficiencies are acheived under any load condition . (iii( High COP(Co efficient of performance) and IPLV (Integrated Part Load Value) (iv) 100% capacity at 43 degree centigrade. (v) Non stop operation even at 56 degree centigrade . (vi)Wide operating Range:This system can operate from 10 degree centigrade to 56 degree centigrade in cooling mode. (vii)Superior Accumulator Design : The VRF System is designed with the largest twin Accumulator in its class.THis new design allows the system to perform seamlessly in low load condition even below 30% without tripping. (viii) Weather Proof ODU Design: ODU is specifically designed to handle extreme climatic conditions/corrosion and polluted atmosphere.

(a) Powder coated GI Sheet metal cabinets. b) All hardware of Anti Rust quality. (c) Conformal coating on PCbs to protect from dust and humidity. (d) Hydrophilic blue fin for better corrosion resistance. (e) Weather proof enclosures for critical components . (f) Emergency back up operation . the compressor backup in ODUs that have two compressors ,the VRF system can function or maintenance downtime of one compressor . (g) Demand Control Mode or Economy Mode the capacity of the ODUs of the VRF can be set at 25%,50%and 75% depending on the need. (h) The system designed to operate across a wide voltage range from 320 volts to 460 Volts resulting in high up time even in erratic power supply. (l) ODUs Backup ,where the multiple units have been combined to run as one large unit the system can operate in case of a failure or a shutdown of one ODU (j) Make of VRF Out Door Unit : BLUE STAR MODEL NO : IVRFB 22 TCN or Equivalent price and technical specification of M/S Voltas/LG/Hitachi duly Approved By GE.

All as per item no :01 here in before But capacity of 12 HPCapacity. Make :: BLUE STAR MODEL NO : IVRFB 12 TCN or Equivalent price and technical specification of M/S Voltas/LG/Hitachi duly Approved By GE.

Disconnecting electric supply from electric sources, taking down split air conditioner 1.50/ 2TR capacity with voltage stabilizers without damaging any other equipments and making good and macthing with existing surface complete and including transportation to MES store yard at CGRA Moggapair with all accessories.Inventory of the ACs/Stabilizers to be prepared and submitted to Engineer-in-charge before disconnecting the same complete all as specified and as directed. tems :

Disconnecting electric supply from electric sources, taking down split air conditioner 1.50 / 2TR capacity with voltage stabilizers without damaging any other equipments and making good and macthing with existing surface complete and including fixing of dismantled AC unit at locations of RHQ( E) with all accessories.Inventory of the ACs/Stabilizers to be prepared and submitted to Engineer-in-charge before disconnecting the same complete all as specified and as directed.

Supply ,install , test and commission Hi Wall Mounted Indoor Split Unit of 2.00 TR Capacity.Make : Blue Star Model VHW 24A or Equivalent price and technical specification of M/S Voltas/LG/Hitachi duly Approved By GE

Supply ,install , test and commission Hi Wall Mounted Indoor Split Unit of 1.50 TR Capacity.Make : Blue Star Model VHW 18A or Equivalent price and technical specification of M/S Voltas/LG/Hitachi duly Approved By GE

Supply,install ,test and commission Refnets and Y-shaped joints for indoor unit of sizes as required to suit 1.50 TR/2.00TR Hi Wall Mounted Indoor Unit complete all specified and as directed. . Make : Blue Star/Voltas/Hitachi

Supply,install,test and commission Refrigerant copper piping insulated with 13 mm thick for discharge line and 19 mm for suction line closed coil rubber nitrile, Class"O" Armaflex/Superion (elasto meric thermal insulation material ) in a tubular form and joints sealed with glass tape inclusive of necessary supports as per standard practices complete all specified and as directed. . Note:(i) At terrace running/out door exposed piping upto shaft shall be provided with suitable size GI 16 Gauge cable tray and Alcomate cover. (ii)Entire piping outside the building (ie:on terrace,shafts)shouled be properly clamped with MS/GI Brackets on the wall of duct/shaftas per detailed drawings,manufacturers instructions and as directed by GE

Supply and fix control cum trasmission wiring of size 3 corex2.50 sqmm flexible FRLS PVC insulated,sheathed copper conductor cable with 20 mm dia non metallic rigid PVC conduit between indoor and DB Power point along with other refrigerant pipes etc complete all specified and as directed. Note : Make of PVC Copper cable: Finolex/Polycab/RR Kabel ltd/Nicco . Make of PVC conduit :Avon Plast/Preto Plast/Kon seal

Supply , Fix , Test and commissioning of communication cable of size 2 corex0.75 sqmm flexible FRLS PVC insulated,sheathed copper conductor cable with 20 mm dia non metallic rigid PVC conduit between indoor and out door unit along with other refrigerant pipes etc complete all specified and as directed. Note : Make of PVC Copper cable: Finolex/Polycab/RR Kabel ltd/Nicco . Make of PVC conduit :Avon Plast/Preto Plast/Kon sea

Supply and fix condensate drain water piping of 25 mm dia rigid heavy duty ,insulated with 19 mm thick Electromeric closed cell rubber nitrile of class "O" Armaflex /Superion K Flex sealed with R242 adhesive of polycholoroprene of any suitable adhesive for proper bonding at end and clamped properly with pre fabricated and pre painted slotted angle supports complete all specified and as directed. Note : Make of UPVC Drain pipe : Finolex/Ori plast/Supreme

Supply and compatible Ozone Friendly (Non CFC) Refrigerant Gas R 410 A / R 32 approved by GE

Material and labour for Sub main wiring with Two run single core 4 sqmm multi stranded copper conductor PVC insulated unsheathed FRLS cable 1100 volts grade and one run of 4.00 Sq mm multi stranded copper conductor PVC insulated unsheathed FRLS cable as earth continuity conductor drawn into and including PVC casing/capping surface/ concealed wiring including conduit accessories complete all as specified and as directed. Notes: (i) The disturbed surfaces shall be made good with existing surface including finishes as applicale. (i) Two different color wires shall be used for phase and neutral . (iii) Connections of cables with MCBs or bus bars shall be done through appropriate size brass/ copper thimbles . (iv) Three run of 4.0 Sqmm cable, and one run of PVC casing/capping will be measured as one unit. (v)Make of cable:- Finlex/Poly cab/ Asian. (vi)Make of PVC casing/capping : Avon plast/ Kon seal / Garware.

Supply and fix Powder coated sheet metal enclosures with socket plug top and MCB single pole and neutral enclosure with a two pin and earth plug and socket complete with one single pole MCB 5/6 amps fixed near by indoor unit complete all specified and as directed. . Make : L&t/Indo Asian/Siemen

Material and labour for Earthing complete with copper earth plate electrode of size 600 mm x 600 mm x 3.15 mm thick buried directly in ground ( earth pit not less than 2.25 metre deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level connected to copper earth strip as earth lead of 20mm x 3.0mm by means of bolts, nuts, check nuts and washers of copper/Brass and other end connected to earthing test point/equipments as directed including GI/MS steel wire mesh funnel with watering pipe of 20 mm bore light grade of galvanized iron and 40 mm dia GI pipe of medium grade for earth lead protection , charcoal or coke , common salt and 25 kg of bentonite around the plate in alternative layers of 15 cm compacted thickness all round the earth electrode ,concrete earth pit in PCC grade of M-10 (Nominal Mix) using 20 mm graded aggregate ,cast iron frame 50 mm thick precast cover slab reinforced with 8 mm dia deformed bars 15 cm c/c and suitable handle of 10 mm dia MS round bar in cluding necessary excavation and earth work in soft/loose soil and disposal of soil to a distance not exceeding 50 meter and necessary testing and all as shown in Electrical Plate no : 5 in SSR Part -Ii complete all as specified and as directed. Note: The rate quoted by the tenderer is inclusive of copper strip earth lead of size 20x3 mm up to 7.50 m only

Supply and fix copper strip of size 20 mm x 3mm for Earthing extension

Supply,lay and test XLPE insulated ,screened,galvanised steel or wire armoured PVC Bedded electric power cable (heavy duty)1100 volts grade with multi straded copper conductor cable of size 10 sqmm 4 core including both the sides lugs and glands fixed complete all specified and as directed. . Make : Finolex/Gloster cables Ltd/Asian

Material and labour for 40 mm bore medium grade Galvanised iron pipe with aii fittings laid in trenches complete all specified and as directed. . Make : Tata/Jindal/Prakash Surya

Material and labour for PCC 1:4:8 Type D-2 using 40 mm graded aggregate as in foundation and mass filling including necessary form work complete all specified and as directed. .

Supply and fix MCCB 4 Pole, 40 Amps ,50 Hz ,415 Volts , Rupturing capacity 16 KA with suitable size enclosure and locking arrangement with weather proof (Sea shore area) complete with incoming and outgoing connection complete all specified and as directed. . Make : Siemen/Schneider/ABB

Supply and fix MCCB 4 Pole, 63 Amps ,50 Hz ,415 Volts , Rupturing capacity 16 KA with suitable size enclosure and locking arrangement with weather proof (Sea shore area) complete with incoming and outgoing connection complete all specified and as directed. . Make : Siemen/Schneider/ABB

Supply and fix PVC casing/capping of suitable size as per manufacturers instructions for covering cable etc from IDU to DB complete all specified and as directed. . Make of PVC casing/capping pipe : Avon Plast/Preto Plast/Kon seal

Supply and fix UPVC casing/capping of suitable size as per manufacturers instructions for covering refrigerant piping and communication cable etc complete all specified and as directed. . Make of PVC casing/capping pipe : Avon Plast/Preto Plast/Kon seal/Honeywell

AMC for Second year after completion of First year liability period which includes Compressors,Refrigerant Gas,PCB and aiso includes four year preventive maintenance by OEM and attending infinite number of break down calls from users complete all specified and as directed. . Note: The items Viz: Copper coil in indoor and out door unit,MCB,MCCB ,UG cable and filters are not covered under AMC for Second year.

NOTE: The rate Quoted for the above items shall be inclusive of (i) dismantling of false ceiling complete and including refixing the same in original position and repairing damages to false ceiling if any by duly replacing with new one.(ii) All the disturbed wall surfaces should match with the existing surface by properly closed with brick work ,plastering and distembering etc complete

HVAC Engineering Co

LAKSHMI MEP INFRAH P LTD

AIRTECH INDIA

RK ENTERPRISES

G.L.THIRUMALAI NAIDU AND COMPANY