HP A0554832 manual

Page 21

System Configuration. The system can be configured in any of the arrangements shown on page 62 of the Appendix. The configuration and distance between the chiller and the condenser affects pipe size, refrigerant charge, oil return, and oil charge. Therefore there are limitations that must be adhered to for reliable and optimal operation.

•Leaving water temperature affects discharge line size. Be sure to inform the installing contractor of the leaving water temperature range in which the chiller will be operating

•The total distance between the chiller and condenser must not exceed 200 feet or 300 equivalent pipe feet

•Discharge line risers cannot exceed an elevation difference greater than 100 feet without a 2% efficiency decrease.

•Refer to page 62 of the Appendix for the location of traps.

•Refrigeration lines must not be crossed, i.e., chiller liquid lines are to be piped to condenser liquid lines.

Sizing Refrigerant Lines. To determine field installed liquid and discharge line sizes, first establish the equivalent length of pipe for each line, valve, and elbow. Chiller capacity and leaving water temperature range is also required. See Figure 2 on page 22 for lengths of refrigerant valves and fittings.

Liquid Line Sizing. The liquid line should be sized as small as possible while maintaining acceptable pressure drop to minimize the refrigerant charge. Liquid line risers must not exceed 15 feet from the base of the air-cooled condenser. Horizontal runs do not require a pitch. Insulation is not required unless the line is installed in a high ambient area, i.e., boiler room. Install a liquid line-charging valve to facilitate refrigerant charging. See Figure 3 on page 22 for sizing information. See Figure 5 on page 23 for charge determination.

Discharge Line Sizing. For horizontal runs, the discharge line should be pitched downward, in the direction of flow, at a rate of 1/2” for every 10 feet. This will allow oil to flow towards the condenser. Discharge line sizing is based on the velocity required for sufficient oil return back to the compressor. See Figure 4 on page 22 for discharge line sizing.

2-40 HP Portable Chillers

Chapter 3: Installation

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Contents Hp Portable Chillers Shipping Information Table of Contents Operation HP Portable Chillers Safety How to Use This ManualSafety Symbols Used in this Manual Responsibility Wear Safety Glasses and Work GlovesModels Covered in This Manual Functional DescriptionGeneral Description Chilled Water CircuitRefrigeration Circuit Standard Features Mechanical FeaturesOther Mechanical Features Refrigeration Features Electrical FeaturesController Features Other FeaturesHigh/Low Thermostat Control Safety Devices and InterlocksCrankcase Heater High Pressure CutoutFan Cycling Switch Oil Pressure Safety SwitchPressure Switch Flow SwitchOptional Features Mounting Features Optional Pump Amperages Voltage Construction Full Load Amps Installation UncratingElectrical Connections Bypass Valve Considerations Process Water ConnectionsGalvanic Corrosion Considerations Water Treatment ConsiderationsCondenser Considerations Water-Cooled Chiller CondensersAir-Cooled Chiller Condensers Remote Air-Cooled Chiller Condensers Page Equivalent Length in Feet for Valves and Fittings Refrigerant Charge Determination Chiller Condenser Charge Field Installed Piping ChargeChecking Motor Direction Three-Phase CompressorsWater Pumps Condenser FanPart Number Description Water ReservoirEthylene Glycol and Propylene Glycol Curves Automatic Water Make-Up Option Initial Start-Up E5CK Controller Indicator Name Description Panel Buttons, Indicator Lights, and SwitchesOperation Microprocessor ControllersSterlco 2000 Controller Indicator Name Description Indicator Name Description2000 Graphic Panel See on Indicator Name DescriptionIndicator Name Description With Sterlco 2000 Controller Typical Graphic Panels With E5CK ControllerAuto-Tuning Setting the Process Water TemperaturesStart-up Optional CommunicationsProgramming the Electronic High/Low Thermostat Thermostat Buttons Indicator Name DescriptionStage 2 High Temperature Protection Select Fahrenheit or CelsiusStage 1 Freeze Protection Maintenance Filter CleaningLubrication Maintaining the Evaporator Maintaining the CondenserEvaporator Process Piping Y-Strainer Air- and Remote Air-Cooled ChillersPreventative Maintenance Service HP Portable Chillers Troubleshooting TroubleshootingHP Portable Chillers Troubleshooting Appendix WarrantyTechnical Assistance Service DepartmentParts Department Sales DepartmentHp and 3 1/2 hp Air-Cooled Portable Chillers Drawings and SpecificationsHp 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 Hp and 7.5 hp Remote Air-Cooled Portable Chillers Nominal cooling Com Refrigeration Power in amps e12.8 17.3 748Nominal cooling Com Refrigeration Hp and 15 hp Remote Air-Cooled Portable ChillersPres Nom Connections 15.0 40.9 34.0 74.7To/from No tank Tank, to/from Height Width Depth Lbs Hp through 40 hp Remote Air-Cooled Portable Chillers‘A’in ‘B’in ‘C’in ‘D’in ODSin Remote Condenser Assembly ModelsHertz Pump Curves Pump Curves, Flow, and Pressure ConsiderationsDWG. No. S0554823 Calculating Chiller Nominal Flow and Pressure to Process Water Pressure Drop TablesRecirculation 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 Central and Gravity Return Piping with Standpipe Diagram Piping DiagramsTypical 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 Time-delay Relays Disconnect Switch Optional Electrical SchematicsTypical Electrical Subpanel Speed FusesTypical Electrical Schematic, 2 hp and 3 1/2 hp Models A0554815 Typical Power Wiring Schematic, 5 hp through 40 hp ModelsHP Portable Chillers Appendix DWG A0554931 DWG A0562343 DWG A0562435 Typical Wiring Schematic, 35 hp and 40 hp Models with Pump DWG A0562434