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MLC-SC Air-Cooled Scroll Chillers100 – 285 TonsOUR BUSINESS IS COOLING YOURSTMmotivaircorp.com
When commercial grade isn’t enoughBusinesses functioning in today’s advanced industrial manufacturing and mission critical environments rely on chillersystems to provide a reliable source of chilled water which can improve overall system uptime and efficiencies. Every critical cooling application is unique in its own way which is why the Motivair MLC-SC scroll chiller rangehas been designed to accommodate a wide range of operating points and customization based specifically on theneeds of the customer. No other air-cooled chiller offers such a broad range of features and benefits that can beused in combination to create a chiller best suited for your business’s needs.OUR BUSINESS IS COOLING YOURSTMmotivaircorp.com
Designed for a Purpose SCROLL COMPRESSORSMultiple high efficiency scroll compressors with R-410A refrigerant. Designed to operate at high efficiency acrossthe entire operating range with lower sound and vibration than traditional compressors. Unique scroll compressordesign allows for resistance to liquid slugging.CONDENSER FAN & MOTORSEach fan features Electronically Commutated (EC) variable speed motor technology, globally recognized asthe most efficient axial fans available in today’s HVAC market.More efficient than VFD speed control, EC motors offer the highest efficiencies and added chiller redundancy.These exceptionally reliable motors feature a reversed stator and rotor, which eliminates the traditional fanmotor shaft. The outer shell of the motor is the rotating body, to which the fan blades are bolted. This uniquearrangement reduces torque stress on the blades, eliminates fan blade stress fractures, maximizes airflow andmaintains efficiency over the entire fan performance curve.CONDENSER & FREE COOLING OPTIONV-Coil profile constructed from seamless copper tubes expanded into aluminum fins creates a high efficiencydesign with minimal pressure drop. Coils are easily maintained with access through removable panels.Optional Free-Cooling features exclusive integrated condenser/free-cooling coil with ultra-low pressure dropand inherent redundancy.Modular design creates opportunities for custom coil configurations.EVAPORATIONShell and tube evaporator features two independent refrigeration circuits (optional 3 circuit design available). Lowpressure drop design on both the water and refrigerant circuits creates maximum efficiency. Custom profile optionsallow for a wide operating range under various design conditions.OUR BUSINESS IS COOLING YOURSTMmotivaircorp.com
Application Defined OptionsOPTIONAL STORAGE TANKSTANDARD FEATURES:n R -410AOPTIONAL DUPLEX PUMPSn S implex(1) Pump Packagen D uplex (2) Pump Packagen S torage Tankn 3 x Refrigeration Circuitsn L ow Noise Packagen U ltra Low Noise Packagen H igh Ambient Packagen S tainlessSteel Cabinet Constructionn C ondenser Coil Coatingn S ecurity Guards for Open Areasn I ntegrated Free-Cooling SystemRefrigerantn F actory Installed Flow Switchn L ocking Disconnect Switchn P hase and Power Monitoringn A dvanced PLC Control Systemn H eavy Duty Galvanized Steel Framewith Baked Powder Epoxy Coat Finishn D esigned for Easy Service Accessn E lectrical Panel Heating & Cooling SystemOPTIONAL 3X REFRIGERATION CIRCUITSOUR BUSINESS IS COOLING YOURSTMmotivaircorp.com
WHENDOWNTIMEIS NOTAN OPTIONIntegrated Free-Cooling: The Ultimate Solution for Optimal Energy SavingsThe Motivair MLC-SC-FC chillers with integrated “Free-Cooling”are designed to provide the owner with optimal performance,year round, in varying ambient temperatures. This “Free-Cooling”option, available on all MLC-SC models and comes standardwith Motivair’s advanced PLC control package – a unique singlepackage for year-round energy savings.The high efficiency scroll compressor plant is designed to coolthe designated heat load during summer months. When ambienttemperatures fall overnight or during cooler seasonal weather, theintegrated “Free-Cooling” system is automatically activated.The system operates by directing the return chilled glycol through the“Free-Cooling” coil, before it enters the evaporator. This is achievedvia an automatic motorized valve, controlled by the PLC, wheneverthe ambient falls below the return chilled glycol temperature setpoint. The glycol is either partially or completely cooled in the “FreeCooling” coil for maximum energy savings.As a result, less mechanical refrigeration is required to achieve thechilled glycol set point, and the scroll compressors are staged downand eventually turned off by the PLC, which continuously monitorsthe system. Energy savings in areas with cooler winter months areOUR BUSINESS IS COOLING YOURSTMsubstantial. The ability to allow the compressors to stage off in coolerweather further drives overall chiller efficiencies. Wear and tear onchiller components is dramatically reduced, due to fewerstart-ups and running hours during winter months.Automatic switching between mechanical cooling and “FreeCooling” is seamless, which allows optimal performance year round.As a general rule of thumb, “Free-Cooling” savings more than payfor the initial investment in the first year of operation!THE PIONEER OF FREE-COOLING CHILLERSWhen Maximum Uptime And Lowest TCO Matter Most MLC-FC Chiller Range has been designed, built and testedspecifically as packaged Free Cooling Chillers ETL-Tested and Listed to current UL & CSA standardsmotivaircorp.com
PLC ControlsWHEN MAXIMUM UPTIME ANDLOWEST TCO MATTER MOSTThe MLC-SC range features the PCO5 control system, which is anadvanced Programmable Logic Controller, with a base-operatingplatform that can be easily modified to adapt to variousapplications.A multi-character LCD display, and easy to follow directionalprompts, gives the operator complete control over all chillerfunctions. Multiple digital and analog inputs as well as digital andPWM outputs offer unparalleled control possibilities.BOARD INTELLIGENT CHILLERRESPONSEThe latest generation of Motivair software allows the chillersto respond to system changes in real time and to adjustperformance accordingly. The proprietary control logic in theMLC-SC or MLC-SC-FC chillers provides:nnnnnCONTROL FEATURES:nnnnnnnnnnnnnn ighly visible LCD displayHT actile push-buttons djustable alarm set pointsA F/ C selectable ompressor Lead/Lag controlC nti-Compressor short cycleA ompressor failure alarmC djustable water set pointAS upply water temp. displayR eturn water temp. displayL ow water temperature alarmF reeze alarmL ow water/glycol flow alarm igh water temperature alarmH utomatic restart after a power outageAR apid restart of refrigeration compressors after a poweroutage, while affording maximum compressor protectionS elective decision on which compressor(s) to start first basedon run-time and fastest possible response to system loadL iquid injection to the compressors under high ambientoperationS eamless transition between refrigeration and optionalFree Cooling mode based on system load, chilled watertemperature, ambient temperatures and installation profile.CENTURION MONITORING SYSTEMnnnnnnnnnL ow refrigeration pressurealarm igh refrigeration pressureHalarmI rregular voltage alarm eneral Alarm RelayGR emote Start/Stop Relay anual alarm resetMR S 232/RS 485communicationE thernet Communication LON,BACNET, MODBUScommunication (optional)MLC & MLC-FC CONTROLSPC05 Display PC05OUR BUSINESS IS COOLING YOURSTMThis optional feature empowers the owner by providing a widerange of safeties and access to critical data from a remotelocation via cellular service, outside of the customer’s firewall.If the chiller is operating in an unsafe condition or in the unlikelyevent of an alarm, designated contacts are immediately notifiedby the chiller of its condition. The pending alarm can then beavoided or quickly corrected.FEATURES: Datatrendingn Password protected multi-level accessn Adjustable warning thresholdsnmotivaircorp.com
MLC-SC/MLC-SC-FC SpecificationsMLC-SC-A CHILLER RANGEWITH SCROLL COMPRESSORSNominal Cooling Capacity*Nominal Cooling CapacityType Of RefrigerantNumber Of Refrigerating CircuitsTotal Compressor Running CurrentNumber Of CompressorsCapacity StepsEVAPORATORNominal Flow RatePressure Drops (Evaporator Valves Piping)PUMP & TANK (OPTIONAL)Maximum Pump Absorbed PowerMaximum Pump Absorbed CurrentAvailable External Pressure (Single)Tank VolumeFANS & CONDENSERFan Electronic Fan Speed ControlFan QuantityFan Total Absorbed PowerFan Total Absorbed CurrentTotal Air FlowNOISE DATASound Pressure LevelELECTRICAL DATAPower CircuitFull Load Current (FLA)Minimum Circuit Ampacity (MCA)Maximum Overcurrent Protection (MOP)DIMENSIONS & WEIGHTSLengthWidthHeightEstimated. Shipping WeightHydraulic Connections (Inlet/Outlet)MLC-SC-FC CHILLER RANGEWITH SCROLL COMPRESSORSNominal Cooling Capacity*Nominal Cooling Capacity100% Free Cooling Ambient TemperatureType Of Refrigerant GasNumber Of Refrigerating CircuitsTotal Compressor Running CurrentNumber Of CompressorsCapacity StepsEVAPORATORNominal Flow RatePressure Drops (Evaporator Valves Piping)F.C. Pressure Drop ( F.C. Coil Evap Valves Piping)PUMP & TANK (OPTIONAL)Maximum Pump Absorbed PowerMaximum Pump Absorbed CurrentAvailable External Pressure (Single)Tank VolumeFANS & CONDENSERFan Electronic Fan Speed ControlFan QuantityFan Total Absorbed PowerFan Total Absorbed CurrentTotal Air FlowNOISE DATASound Pressure LevelELECTRICAL DATAPower CircuitFull Load Current (FLA)Minimum Circuit Ampacity (MCA)Maximum Overcurrent Protection (MOP)DIMENSIONS & WEIGHTSLengthWidthHeightEstimated. Shipping WeightHydraulic 006601,336,735 1,466,3411111221,691,402 1,834,600 1,953,961 2,185,851 8830133244466664444444Shell & Tube296325375407433484514991110101010Simplex or Duplex Pump Options, Carbon Steel or Stainless Steel Tank 9159Axial EC Fans & Copper Tube with Aluminum Fin .423.431.231.231.239.039.076,98676,986102,648 102,648 102,648 128,310128,310Distance measured in an open field at 33 feet from Condenser70.072.073.771.771.573.474.4Does not include optional 200270340390BTU/HRTON 341517887967,34164601,142,377 1,343,566 9131332923087969,78969302,932,648 3,109,964 3,607,829 3,805,6362442593013172365641,817,558 1,933,504 2,148,353 926329130833944466664444444Shell & 119Simplex or Duplex Pump Options, Carbon Steel or Stainless Steel Tank 9159Axial EC Fans & Copper Tube with Aluminum Fin 007113,007135,608135,608Distance measured in an open field at 33 feet from Condenser70.572.473.772.171.973.674.7Does not include optional 622,0248471879622,02483,222,495 3,413,4712692843230*Performance rated at 44oF outlet water, 54oF Inlet Water, 95oF Ambient, 100% water. Chiller capacity changes with operating conditions, consult Motivair for assistance. Location and installation of equipment byothers 2021 Motivair Corporation. Motivair reserves the right to modify specifications without notice. Reproduction of this brochure in whole or in part is prohibited.OUR BUSINESS IS COOLING YOURSTMmotivaircorp.com
MPC & MPC-FC1/2-50 ton packaged air-cooled or water-cooled chillers for Industrial cooling, Medicalcooling or custom HVAC applications. Includes integrated microprocessor, pump station, andstorage reservoir.MLC & MLC-FC60-500 tons air-cooled, water-cooled & split system chillers for industrial or HVAC applications.Available Integrated Free-Cooling.ChilledDoor Advanced server rack cooling system fits and standard or OEM computer rack. Removes up to75 kW of server heat per door.CDUCoolant Distribution Unit from 20kW -1MW heat removal for use with the ChilledDoor or othercomputer cooling systems.PTSPump/Tank Stations for chillers and cooling systems.MFCClosed loop dry-coolers for process cooling and remote “Free-Cooling” applications.5900 Genesee St.Lancaster, NY 14086Tel: 1 716-691-9222OUR BUSINESS IS COOLING YOURSTMmotivaircorp.com
MLC-SC-FC chillers with integrated "Free-Cooling" are designed to provide the owner with optimal performance, year round, in varying ambient temperatures. This "Free-Cooling" option, available on all MLC-SC models and comes standard with Motivair's advanced PLC control package - a unique single package for year-round energy savings.
