Sterling SCW Series Typical Two-Circuit 60-195 Ton Remote Air Cooled Chiller, 460/3/60

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Figure 2

Typical Two-Circuit 60-195 Ton Remote Air Cooled Chiller

Model				SCWR-xxx
		60		75		90		100
Cooling Capacity (tons) @ 50°F LWT		53.8		67.1		79.1		91.2
Capacity stages				Infinite		Unloading
EER (BTUH/W)		9.4		9.9		9.8		10
Nominal water flow (gpm)	Evaporator	129		161		190		219
Evaporator manifold connection Victaulic			3				4
No. of condenser fans per condenser		3		3		4		4
Amp draw, nameplate	Chiller	112		130		138		170
(460/3/60 V)	Condensers (per condenser)	11		11		14		14
Dimensions (in.) of chiller	Height		75				74
	Width		100				115
	Depth		45				72
Dimensions (in.) of each	Height				50
condenser	Width		45.5				45.5
	Depth		180				235
Shipping weight (lbs)	Chiller	2,574		2,676		3,456		3,532
	Condensers (each condenser)	1,190		1,210		1,580		1,620
Max operating weight	Chiller	2,600		2,710		3,498		3,580
(lbs.)	Condensers	1,215		1,240		1,650		1,660

Model			SCWR-xxx
Model		115	145		165	195
		115	145		165	195
Cooling Capacity (tons) @ 50°F LWT		104.1	130.5		148.4	174.0
Capacity stages			Infinite		Unloading
EER (BTUH/W)		10.3	10.5		10.4	10.2
Nominal water flow (gpm)	Evaporator	250	313		356	418
Evaporator manifold connection Victaulic		4		6
No. of condenser fans per condenser		4	5		6	8
Amp draw, nameplate	Chiller	216	250		282	316
(460/3/60 V)	Condensers (per condenser)	14	18		21	28
Dimensions (in.) of chiller	Height	77			81
	Width	124		137
	Depth	72		75
Dimensions (in.) of each	Height			50
condenser	Width		45.5				88
	Depth	235	290		345		235
Shipping weight (lbs)	Chiller	4,156	7,528		7,554		7,698
	Condensers (each condenser)	1,760	2,380		2,480		3,230
Max operating weight	Chiller	4,212	7,788		7,814		8,016
(lbs.)	Condensers (each condenser)	1,800	2,435		2,540		3,300

cBased on 50ºF (10ºC) chilled water supply temperature and 95ºF (35ºC) ambient air. d Based on 2.4 gpm per ton (9.1 lpm per 3.517 kW)

eMultiply 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 DamagesReturns If the Shipment is Not CompleteIf the Shipment is Not Correct Bill of lading Packing listUncrating Your New Chiller SCW Series Central Chilling Stations Installation Location Considerations Making Electrical ConnectionsCheck Compressor Rotation Before Starting Unit To Process Piping ConsiderationsMaking Process Water Connections Making Tank Piping Connections Water Treatment Considerations Water Connection Sizing ConsiderationsGalvanic Corrosion Considerations Making Water-Cooled Condenser ConnectionsCondenser Water Out Installing the Remote Air-Cooled CondenserCondenser Water Water Pump Checking Motor DirectionCompressor Condenser Fan Lead-Lag Compressors AlarmsStaging Lead-Lag PumpsFreezestat Control Chilled Water CircuitRefrigeration Circuit Freezing Protection Curve Percent byHigh Pressure Cutout Flow SwitchHigh pressure cutout setting Low Pressure CutoutChilled Water Manifold Control NozzleControl Probe 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 Operator Interface Introduction Using the StandardOperator Interface 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 Touchscreen Interface Introduction MMI Using the AdvancedTouchscreen Interface 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 Remote Air-Cooled Condenser MaintenanceLubrication Water-CooledMakeup Valve Evaporator MaintenancePump Motor Seal 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