Sterling SCW Series Typical Two-Circuit 60-195 Ton Water Cooled Chiller, Nominal water flow gpm

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Figure 1

Typical Two-Circuit 60-195 Ton Water Cooled Chiller

Model				SCWW-xxx
Model		60		75	90		100
		60		75	90		100
Cooling Capacity (tons) @ 50°F LWTc		60.4		74.9	88.8		102.2
Capacity stages				Infinite	Unloading
EER (BTUH/W)		15.2		15.1	15.7		15.5
Nominal water flow (gpm)	Evaporatord	145		180	213		245
Nominal water flow (gpm)	Condenserse	181		225	266		307
	Condenserse	181		225	266		307
Condenser connection (no manifold) Flange Conn. (in.)			2.5			3
Evaporator manifold connection Victaulic			3			4
Amp draw, nameplate	Water-cooled	112		130	138		170
(460/3/60 V)f	Water-cooled	112		130	138		170
(460/3/60 V)f
Dimensions (in.)	Height		85			74
Dimensions (in.)	Width		100			115
	Depth		45			72
Shipping weight (lbs)		3,266		3,512	4,336		4,982
Max operating weight (lbs.)		3,468		3,754	4,594		5,246

cBased on 50ºF (10ºC) chilled water supply temperature and 85ºF (29ºC) tower water. d Based on 2.4 gpm per ton (9.1 lpm per 3.517 kW).

e Based on availability of 85ºF (29ºC) tower water at 25 psi (172.4 kPa/1.7 bars) minimum.

f Multiply 460/3/60 amperage by 2.0 for 208-230/3/60 amperages; multiply by 1.2 for 380/3/60 amperages; multiply by 0.8 for 575/3/60 amperages

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SCW Series Central Chilling Stations

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Contents SCW Series Central Chilling Stations SCW Series Central Chilling Stations Safety Considerations Wear Safety Glasses and Work GlovesTable of Contents Startup Checklists Indicator Lights and Control Switches MMIViewing and Operating Chiller Pumps Charts and Figures Introduction Necessary DocumentsStandard Features Models CoveredStandard Features on Remote Condensers Available OptionsModel Number Nomeclature Typical Two-Circuit 60-195 Ton Water Cooled Chiller Nominal water flow gpm460/3/60 Vf Typical Two-Circuit 60-195 Ton Remote Air Cooled Chiller 460/3/60Scwr Series Remote Condenser Models Unpacking and Inspection Event of Shipping DamagesIf the Shipment is Not Complete If the Shipment is Not CorrectReturns Bill of lading Packing listUncrating Your New Chiller SCW Series Central Chilling Stations Installation Location Considerations Making Electrical ConnectionsCheck Compressor Rotation Before Starting Unit Piping Considerations Making Process Water ConnectionsTo Process Making Tank Piping Connections Water Connection Sizing Considerations Galvanic Corrosion ConsiderationsWater Treatment Considerations Making Water-Cooled Condenser ConnectionsInstalling the Remote Air-Cooled Condenser Condenser WaterCondenser Water Out Checking Motor Direction CompressorWater Pump Condenser Fan Alarms StagingLead-Lag Compressors Lead-Lag PumpsChilled Water Circuit Refrigeration CircuitFreezestat Control Freezing Protection Curve Percent byFlow Switch High pressure cutout settingHigh Pressure Cutout Low Pressure CutoutControl Nozzle Control ProbeChilled Water Manifold Optional Condenser Water ManifoldSCW Series Central Chilling Stations Startup Checklists Water-Cooled SCW Series Startup ChecklistSCW Series Central Chilling Stations Water-Cooled SCW Series Startup Remote Air-Cooled SCW Series Startup Checklist SCW Series Central Chilling Stations Remote Air-Cooled SCW Series Startup Fan Set on Set off Number Psi KPa BarsDetermining Flow Rate ShutdownIndicator Lights and Control Switches MMI Graphic Panel DevicesSCW Series Central Chilling Stations Using the Standard Operator InterfaceOperator Interface Introduction Using the SCW Series Standard Operator Interface SCW Series Standard Control PanelViewing and Operating Chiller Pumps Viewing Active Alarms and Handling Alarm Conditions Viewing and Setting System TemperaturesSetting System Temperatures Using the Advanced Touchscreen InterfaceTouchscreen Interface Introduction MMI Using the SCW Series Advanced Touchscreen Interface Viewing Compressor Status Main Menu ScreenChiller 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 Condenser Maintenance LubricationRemote Air-Cooled Water-CooledEvaporator Maintenance Pump Motor SealMakeup Valve Recommended Pump Tank Spare PartsPreventive Maintenance Service SCW Series Central Chilling Stations Troubleshooting Problem Possible Cause Solution Verify proper rotation if Service Notes Index Determining Flow RateSCW Series Central Chilling Stations Service Notes Service Notes Service Notes Technical Assistance Parts Department