Sterling SCW Series installation manual Control Nozzle, Control Probe, Chilled Water Manifold

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4-11 Control Nozzle

All SCW Series chilling station evaporators have two control nozzles. The flow switch, freezestat, and flush port are located in the control nozzle. Pressure gages are mounted in the control nozzles to aid in achieving proper flow through the evaporator and balancing flows.

Pressure drop between evaporator entering water pressure and evaporator leaving water pressure can be converted to gallons per minute using the pressure drop charts below.

Model

 

Water Side Pressure Drop

 

Condenser (each)

Evaporator (each)

Number

Flow (gpm)

PD (psi)

Flow (gpm)

PD (psi)

 

SCWW/R60

91

4.0

72

5.3

SCWW/R75

102

4.7

90

4.5

SCWW/R90

117

4.4

107

5.6

SCWW/R100

150

5.5

123

3.9

SCWWR115

166

4.3

140

3.0

SCWW/R145

196

4.1

175

4.8

SCWW/R165

219

4.1

200

4.6

SCWW/R195

278

4.7

232

6.0

4-12 Control Probe

Two control probes sense temperatures. One probe measures the temperature of the hot well and the other does the same for the cold well of the reservoir. These temperatures are used by the PLC controller to sequence the compressors, based on load.

4-13 Chilled Water Manifold

The chilled water manifold allows one-point connections of TO PROCESS piping. The Sch. 40 steel piping includes butterfly valves at each evaporator for flow balancing and circuit isolation; optional pressure gauges can be installed.

4-14 Optional Condenser Water Manifold

The optional condenser water manifold allows one-point connection of TO TOWER (drain) and FROM TOWER (city water) piping. Sch. 40 steel include butterfly valves for each condenser.

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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 To Process Piping ConsiderationsMaking Process Water Connections Making Tank Piping Connections Water Connection Sizing Considerations Galvanic Corrosion ConsiderationsWater Treatment Considerations Making Water-Cooled Condenser ConnectionsCondenser Water Out Installing the Remote Air-Cooled CondenserCondenser Water Water Pump Checking Motor DirectionCompressor Condenser Fan Alarms StagingLead-Lag Compressors Lead-Lag PumpsFreezestat Control Chilled Water CircuitRefrigeration Circuit 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 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 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
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