Programming the Electronic High/Low Thermostat | HP A0554832

4-6 Programming the Electronic High/Low Thermostat

The thermostat control is located in the chiller enclosure. The control has three control keys and a one-line, four-character LCD display.

The thermostat control has a lockout slide switch to prevent tampering by unauthorized personnel. The switch is located on the inside cover of the thermostat. The keypad is disabled when the switch is moved to the left in the “Lock” position. The keypad functions normally when the switch is moved to the right in the “Unlock” position. All chillers are shipped with the switch in the “Lock” position.

Thermostat Buttons

Indicator Name		Description
SET	Set Button	The Set button is used to enter the programming
SET		mode for the thermostat.
		mode for the thermostat.
	Up Arrow button	Each press of the Down Arrow key decrements or
		reduces values or settings on the display
	Down Arrow	Each press of the Up Arrow key increments or
	button	advances the values or settings on the display.

2-40 HP Portable Chillers

Chapter 4: Operation

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HP A0554832 manual Programming the Electronic High/Low Thermostat, Thermostat Buttons Indicator Name Description

Contents

Hp Portable Chillers Shipping Information Table of Contents Operation HP Portable Chillers Safety How to Use This ManualSafety Symbols Used in this Manual Wear Safety Glasses and Work Gloves Responsibility Functional Description Models Covered in This Manual General Description Chilled Water CircuitRefrigeration Circuit Standard Features Mechanical FeaturesOther Mechanical Features Electrical Features Refrigeration FeaturesController Features Other Features Safety Devices and Interlocks High/Low Thermostat ControlCrankcase Heater High Pressure Cutout Oil Pressure Safety Switch Fan Cycling SwitchPressure Switch Flow Switch Optional Features Mounting Features Optional Pump Amperages Voltage Construction Full Load Amps Installation UncratingElectrical Connections Process Water Connections Bypass Valve ConsiderationsGalvanic Corrosion Considerations Water Treatment Considerations Condenser Considerations Water-Cooled Chiller CondensersAir-Cooled Chiller Condensers Remote Air-Cooled Chiller Condensers Page Equivalent Length in Feet for Valves and Fittings Chiller Condenser Charge Field Installed Piping Charge Refrigerant Charge Determination Three-Phase Compressors Checking Motor DirectionWater Pumps Condenser Fan Water Reservoir Part Number Description Ethylene Glycol and Propylene Glycol Curves Automatic Water Make-Up Option Initial Start-Up Panel Buttons, Indicator Lights, and Switches E5CK Controller Indicator Name DescriptionOperation Microprocessor Controllers Indicator Name Description Sterlco 2000 Controller Indicator Name Description 2000 See on Indicator Name Description Graphic Panel Indicator Name Description Typical Graphic Panels With E5CK Controller With Sterlco 2000 Controller Setting the Process Water Temperatures Auto-TuningStart-up Optional Communications Thermostat Buttons Indicator Name Description Programming the Electronic High/Low Thermostat Stage 2 High Temperature Protection Select Fahrenheit or CelsiusStage 1 Freeze Protection Maintenance Filter CleaningLubrication Maintaining the Condenser Maintaining the EvaporatorEvaporator Process Piping Y-Strainer Air- and Remote Air-Cooled Chillers Preventative Maintenance Service Troubleshooting HP Portable Chillers Troubleshooting HP Portable Chillers Troubleshooting Warranty Appendix Service Department Technical AssistanceParts Department Sales Department Drawings and Specifications Hp and 3 1/2 hp Air-Cooled Portable Chillers Hp and 7.5 hp Air-Cooled Portable Chillers Hp and 15 hp Air-Cooled Portable Chillers 20 hp, 25 hp, and 30 hp Air-Cooled Portable Chillers Hp and 3.5 hp Water-Cooled Portable Chillers Nominal Condenser water Nominal cooling Water ComIn. NPT Height Width Depth Lbs Hp and 7.5 hp Water-Cooled Portable Chillers Hp and 15 hp Water-Cooled Portable Chillers 20 hp, 25 hp, and 30 hp Water-Cooled Portable Chillers Hp and 40 hp Water-Cooled Portable Chillers Nominal cooling Com Refrigeration Power in amps e Hp and 7.5 hp Remote Air-Cooled Portable Chillers12.8 17.3 748 Hp and 15 hp Remote Air-Cooled Portable Chillers Nominal cooling Com RefrigerationPres Nom Connections 15.0 40.9 34.0 74.7 Hp through 40 hp Remote Air-Cooled Portable Chillers To/from No tank Tank, to/from Height Width Depth Lbs Remote Condenser Assembly Models ‘A’in ‘B’in ‘C’in ‘D’in ODSin Pump Curves, Flow, and Pressure Considerations Hertz Pump Curves DWG. No. S0554823 Water Pressure Drop Tables Calculating Chiller Nominal Flow and Pressure to Process Recirculation Pump Specifications Recirc. power Flow Rate ∆ pressure Gpm Lpm Psi KPaFlow and Pressure Considerations Remote Air-Cooled Chiller Configurations Configuration aConfiguration B Configuration C Typical Ductwork for Air-Cooled Chillers Piping Diagrams Central and Gravity Return Piping with Standpipe Diagram Typical Piping Schematic, 2 and 3 1/2 hp Models HP Portable Chillers Appendix HP Portable Chillers Appendix Typical Piping Schematic, 5 hp through 40 hp, No-Pump Models HP Portable Chillers Appendix Electrical Schematics Time-delay Relays Disconnect Switch OptionalTypical Electrical Subpanel Speed Fuses Typical Electrical Schematic, 2 hp and 3 1/2 hp Models Typical Power Wiring Schematic, 5 hp through 40 hp Models A0554815 HP Portable Chillers Appendix DWG A0554931 DWG A0562343 DWG A0562435 Typical Wiring Schematic, 35 hp and 40 hp Models with Pump DWG A0562434