Sterling SCW Series installation manual Models Covered, Standard Features

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1-3 Models Covered

This manual provides operation, installation, and maintenance instructions for the SCW Series central chilling stations.

Model numbers are listed on the serial tag. A model number followed by Q indicates a specially constructed unit, and not all information in this manual may apply. Make sure that you know the model number, serial number, and operating voltage of your chiller if you contact Sterling.

1-4 Standard Features

•Two independent refrigeration circuits

•High-efficiency screw compressors

•Stainless steel brazed plate (60 & 75) Shell & Tube (90 – 195) evaporators

•Cleanable shell and tube condensers (water-cooled models)

•Electronic expansion valve

•2 remote single circuit condensers with variable speed lead fans and fan cycling (air-cooled models)

•NEMA 12 electrical enclosure

•Mitsubishi FX2N PLC control with F930GOT touchscreen interface.

•High and low refrigerant pressure safeties

•Touch-safe branch circuit fusing

•Evaporator water piping manifold (Condenser manifold optional)

•R-134a refrigerant

•Digital low temperature freezestat

•Liquid line solenoid and shut-off valves

•Chilled water flow switches

•1 year warranty on parts and labor

•3 year warranty on controller

SCW Series Central Chilling Stations

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Contents SCW Series Central Chilling Stations SCW Series Central Chilling Stations Wear Safety Glasses and Work Gloves Safety ConsiderationsTable of Contents Indicator Lights and Control Switches MMI Startup ChecklistsViewing and Operating Chiller Pumps Charts and Figures Necessary Documents IntroductionModels Covered Standard FeaturesAvailable Options Standard Features on Remote CondensersModel Number Nomeclature Nominal water flow gpm Typical Two-Circuit 60-195 Ton Water Cooled Chiller460/3/60 Vf 460/3/60 Typical Two-Circuit 60-195 Ton Remote Air Cooled ChillerScwr Series Remote Condenser Models Event of Shipping Damages Unpacking and InspectionIf the Shipment is Not Correct If the Shipment is Not CompleteReturns Bill of lading Packing listUncrating Your New Chiller SCW Series Central Chilling Stations Making Electrical Connections Installation Location ConsiderationsCheck Compressor Rotation Before Starting Unit Piping Considerations Making Process Water ConnectionsTo Process Making Tank Piping Connections Galvanic Corrosion Considerations Water Connection Sizing ConsiderationsWater Treatment Considerations Making Water-Cooled Condenser ConnectionsInstalling the Remote Air-Cooled Condenser Condenser WaterCondenser Water Out Checking Motor Direction CompressorWater Pump Condenser Fan Staging AlarmsLead-Lag Compressors Lead-Lag PumpsChilled Water Circuit Refrigeration CircuitFreezestat Control Percent by Freezing Protection CurveHigh pressure cutout setting Flow SwitchHigh Pressure Cutout Low Pressure CutoutControl Probe Control NozzleChilled Water Manifold Optional Condenser Water ManifoldSCW Series Central Chilling Stations Water-Cooled SCW Series Startup Checklist Startup ChecklistsSCW Series Central Chilling Stations Water-Cooled SCW Series Startup Remote Air-Cooled SCW Series Startup Checklist SCW Series Central Chilling Stations Fan Set on Set off Number Psi KPa Bars Remote Air-Cooled SCW Series StartupShutdown Determining Flow RateGraphic Panel Devices Indicator Lights and Control Switches MMISCW Series Central Chilling Stations Using the Standard Operator InterfaceOperator Interface Introduction SCW Series Standard Control Panel Using the SCW Series Standard Operator InterfaceViewing and Operating Chiller Pumps Viewing and Setting System Temperatures Viewing Active Alarms and Handling Alarm ConditionsSetting System Temperatures Using the Advanced Touchscreen InterfaceTouchscreen Interface Introduction MMI Using the SCW Series Advanced Touchscreen Interface Main Menu Screen Viewing Compressor StatusChiller Status Screen Chiller Configuration Screen SCW Series Central Chilling Stations Compressor Run Time Display Screen Viewing Chiller Pump Status Pump Status Screen Pump Enables Screen Pump Run Time Display Screen Pumps Alarm Condition Screen Viewing and Setting System Temperatures System Status Screen Temperature Input Display Screen Lubrication Condenser MaintenanceRemote Air-Cooled Water-CooledPump Motor Seal Evaporator MaintenanceMakeup Valve Recommended Pump Tank Spare PartsPreventive Maintenance Service SCW Series Central Chilling Stations Troubleshooting Problem Possible Cause Solution Verify proper rotation if Service Notes Determining Flow Rate IndexSCW Series Central Chilling Stations Service Notes Service Notes Service Notes Parts Department Technical Assistance