A TATA Product VOLTAS LIMITED Domestic Projects Group WATER-COOLED ENERGY EFFICIENT VARIABLE SPEED SCREW CHILLERS GREEN © EFFICIENT © SUSTAINABLEVOLTAS WATER-COOLED ENERGY EFFICIENT VARIABLE SPEED SCREW CHILLERS Voltas Electro-mechanical & Refrigeration Business Group, an ISO 9001: 2008 company is a pioneer & leader in the field of electromechanical & refrigeration introduces new series of energy efficient Variable Speed Screw Chillers using environment friendly refrigerant R-134a. As a result of commitment to provide customers the latest green technology and ‘best value for money; Voltas chillers have become an ideal choice for Green Building Projects and other air conditioning applications. The chillers are available in wide range of capacities and each unit is tested in state-of-the art test facility matching international standards prior to delivery, ensuring reliability and optimum performance. MODEL NOMENCLATURE AC EG W F VX R 2002 MLN25 pee) |__ spp if Exceptional energy efficiency by design Today conservation & efficient use of energy resources have become vital for global sustainability. Ministry of Power, Government of India has thus come up with Energy Conservation Building Code (ECBC) incorporating stringent efficiency norms for air conditioning equipments. Voltas’ new energy efficient VFD Driven chillers are at par with ECBC equipment efficiency compliance. The achievements in performance of these chillers are due to improvement in basic design, and precise control system and minimization of ‘energy loss in part load by VFD Speed Control, eliminating discharge gas bypass to suction.VOLTAS = VED Series Features : + High Efficiency + Improved integrated Part Load Value (IPLV) + Precise Capacity control with VED + Auto adjustable volume ratio (VI) + Low Energy Consumption + Low Starting Current with Zero Inrush + No Conventional starter required + Improved Power Factor + Intelligent Built-In System + Electronic Overload Protector + Builtin Temp Sensors + Builtin oil level sensors + Electronic Expansion valve and driver Low Noise Level © Salient features of Screw compressor : + High efficiency due to scientific profile design for screws, high speed operation & precision controls. + Robust & proven construction with double walled single housing and new Slider Technology. + Stepless capacity control from 100% to 25% for each compressor. + Two stage ultra fine inbuilt oil separator results in less oil carry over rate, + Lower noise level due to double walled casting. + Each compressor is provided with self motor protection module, PTC motor winding protection, oil temperature protection, oil level switch & oil heaters, all guaranteeing reliability & long life. + Semi hermatic type compressors which are easily serviceable, = VFD Features: + Efficiency ~ Best in industry + RFl filter - C3 level + UL&CE certified + Provided with Inbuilt harmonics reduction + Low harmonic distortion : IEEE - 519 compliance (Optional) Display information Easily accessible measurements include the following parameters: + Leaving chilled water temperature + Suction pressure “+ Discharge pressure + System voltage + Compressor current + Compressor elapsed run time + Oil level fault indication + Option of remote/Local operation + Compressor % loading + Compressor ON/OFF statusVOLTAS = Electronic Expansion Valve (EXV)-Precise and Efficient Control: EXV are used to maintain precise flow of refrigerant to evaporator under both full load and part load operation of compressor. It can precisely control superheat at the outlet of evaporator with faster response irrespective of wide variation in capacity. EXVis a vast improvement over conventional thermostatic expansion valve and enables reduction of energy loss and improves overall efficiency of chillers. = Economiser as provided Greatly improves efficiency of the unit & full load cooling capacity. Additional subcooling is created by expanding one part of liquid refrigerant from condenser to subcool remaining part of total refrigerant in a compact plate type heat exchanger (PHE). Screw compressor is provided with an additional suction port called ECO port which make it possible to suck the refrigerant vapour from PHE to accomplish economizer heat transfer. = PLC/ Micro-Computer Control Panel Advanced PLC/ Micro-Computer control isa standard feature on all Voltas screw chillers. This maintains all analog and digital inputs to achieve precise control of the operational and protective functions of the unit. Direct Digital Control (DDC) allows fingertip user interaction. It’s simple to use push button key board and menu driven software provides access to the operating conditions, control set points and alarm history clearly displayed on a 32-A character alpha numeric display. = USER-FRIENDLY operation Modes + Programmed Auto Mode: Auto start and stop are programmable for entire year. This minimizes operator intervention. This mode facilitates auto restart on power restoration after a load shedding or grid supply failure. + Auto Mode: Start and Stop of the unit is controlled manually by a single button. Subsequent operation of the unit is fully automatic through ‘microcomputer control. + Test-service Mode facilitates testing of the unit under supervision + Remote mode (for Hardware BMS): facilitates to start the unit from remote place through hardware BMS. Panel provided with three additional digital outputs & one digital input (Start key) hardware BMS as standard scope of supply.VOLTAS System Protection: The following system protection controls will automatically act for protecting the chiller under abnormal conditions and to ensure system reliability and safety. + Low suction pressure + Compressor over current + High discharge pressure + High winding temperature + High oil temperature + High refrigerant level + Freeze protection + Sensor error + Low Chilled water flow + Single phase and phase reversal + Low oil level + Over/under current and current unbalance + Antirecycle + Preventive maintenance due trip + Self protection (SE-E1) + Over/under voltage and voltage unbalance Diagnostic Displays Diagnose mode provide for easy trouble shooting + Unit trips 50 hrs prior to completion of 8000 hrs as a precautionary measure for preventive maintanance. + Alarm history of last 10 trips with date, time & cause of failure. + Protection trips for various vital display parameters. Adaptive Control + Discharge/suction pressure limiting is done by Compressor unloading. This offers advantage of chiller running unloaded instead of tripping. + Incase compressor current increases above set value the microcomputer senses the increase & signals the computer to unload thus maintaining current within set value. Standard Scope of Supply + Compressor, oil heater, discharge shutoff, discharge check valve, unloader, oil level switch, lubrication oil first charge, shut off valve of economizer connection, liquid injection system, VED. + Micro-computer panel with MCC comprising starter, control transformer, motor and package protection devices, and factory wired, under voltage and phase failure relay. + Communication port for remote connectivity, status and fault indication. + BMS compatibility with MODBUS / BACnet. + Single point electrical power connection. + Integrated pressure relief valve, oil service valve, built-in motor with PTC sensors, discharge temperature sensor, IP 54 Terminal Box for motor. + Evaporator, water cooled condenser, economizer, secondary oil separator. Optional Features offered + Dual mode chillers for thermal storage system. + Touch Screen HMI.VOLTAS eters Nominal Capacity (TR) Compressor Type Quanaty/unit Max allowable RPM @ BOHZ Minallowable RPM @ 2082 Stepless Capacity Control (>toading Range) o1ltype Olt charge ts, Per Compressor Refigerant TECHNICAL DATA SHEET - W/C VARIABLE SPEED SCREW CHILLER PKG. ( R134a) 100-25% 10-25% 18 “Twin Screw , VED Driven 1 al 4148 1200 ee an he 00-25% | 10-25% 10-25% 10-13% 18 Evaporator Type Quanaty/unit ‘Water Flow Rate (USgpr) ‘Water Pr. Drop (KPa) ‘Water Nozzle NB inch) Condenser ype Condenser Quantity/unit ‘Water Flow Rate (USgprn) ‘Water Pr. Drop (kPa) ‘Water Nozzle NB inch) 266 102 ats 75 Flooded - Shell tube Shell {Tube 1 an a5 49 621 a VED Output - Amps (380-460V) Qty. of VED Per Unit Unit Length (mm) width (men) Unit Height (mm) ‘Approx. Shipping WT. kg) "7 4228 1545 1544 2487 212 4340 asa 1625 2617 50 | 1633 1623 sor 4330 1500 1750 3267 215 4356 v1 1748 3513 Notel : *Capacity rated for Evaporator water in / out at 12°C /7°C and Condenser in / out at 30°C / 35°C. Evaporator Fouling Factor of 0.000018 m’k/ Watt and Condenser Fouling Factor of 0.000044 m?k/ Watt. Note? : Power Supply Voltage 415V, 3 Phase & 50 Hz, Control Supply :210 - 240. Note: Extended capacity product range available on request. wr 4516 2052 1677 ane9VOLTAS G.A DRAWING WIC VED SCREW CHILLER PKG WITH CHILLER 3PASS & CONDENSER 3PASS SINGLE COMPRESSOR _ a i Saee BE cle Pere sie L] won| emerson fmorer|if[*[»[ ale] elele[ lel |«|« | + aera G.ADRAWING W/C VFD SCREW CHILLER PKG WITH CHILLER 2PASS & CONDENSER 2PASS SINGLE COMPRESSOR oe oe Boe / = ven 5 letVOLTAS G.A DRAWING W/CVFD SCREW CHILLER PKG WITH CHILLER 2PASS / 3PASS & CONDENSER 2PASS TWIN COMPRESSOR i worms | | ae H POINT LOAD DIAGRAM OF W/C VARIABLE SPEED SCREW CHILLERS | | i|4 | | i + to a mae Se ee ee eee ee (Product Developmentls A Continuous Process Voltas, Hence Specifications And Technical Data Subject To Alterations Without Notice.)SPECTRUM OF HVAC PRODUCTS & SYSTEMS ENERGY EFFECIENT PACKAGED & DUGTABLE SPLIT UNIT ‘AIR COOLED SCREW CHILLER \VARIABLE REFRIGERANT FLOW SYSTEM (VRF) INTER COOLED SCROLL CHILLER ENERGY EFFECIENT WATER COOLED SCREW CHILLER AVR COOLED SCROLL CHILLER. [WATER COOLED RECIPROCATING CHILLER ‘DOUBLE EFFECT VAM ‘IR COOLED RECIPROCATING CHILLER ‘PROCESS REFRIGERATION PACKAGE 1a & ENERGY REDUCTION SYSTEM C0-GEN VAPOUR ABSORPTION MACHINE (VAN) ‘CoWLOTRON (UV FoR AM COMLS) STP EA ODOUR / eS REMOVAL SYSTEM ‘AIR HANOLING UNITVOLTAS LIMITED Domestic Projects Group Voltas House ‘B', 3rd floor, T. B. Kadam Marg, Chinchpokli, Mumbai-400 033, India Tel: +91 22 6665 6552 / 6792 0469 Email: sunilk@voltas.com | ssagar@voltas.com www.voltas.com NORTH ZONE DELHI (011) 68505550 / 66505659 Chandigarh (0172) 6610124 Jaipur (0141) 6251746 /654101) Lucknow (0522) 2237869/ 2236453 EAST ZONE KOLKATA (033) 65266245 / 65265265 / 6 Guwahati (03612) 2463073 Bhubaneshwar (0674) 4574044 JAMSHEDPUR (0657) 6622358 Patna (0612) 2500786 WEST ZONE (MUMBAI (022) 66856754 1756 Gos (0832) 2463664 Nagpur (0712) 618846 (47 Indore (0731) 2498816 Pune (020) 66297457 /58 Aurangabad (0240) 2520510 AHMEDABAD (079) 66301108 / 10 Ankleshwar (02646) 238199 Sivasa (0260) 2640363 ‘Surat (261) 6590118 / 2422761 Vadodara (0265)2322008 SOUTH ZONE ‘CHENNAI (084) 66760355 6760333 Coimbatore (0422) 2241188 /2244384 Madura (0452] 2535818 BENGALURU (080) 67132500 to 04 / 67132637, HYDERABAD (020) 66500400 /66743019 / 66500451 Viaywads (086) 2435282 Visakhapatnam (0891) 2754081 2754865 KOCHI (0484) 2359621 wich ro Mesewi0n/e/14/1K