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Black Box CRDX-G-FS-24KW, CRDX-W-FS-12KW, CRDX-A-FS-24KW General Design, Introduction, Page

Models: CRDX-W-FS-12KW Black Box Cold Row DX CRDX-W-FS-24KW CRDX-A-FS-24KW CRDX-A-FS-12KW CRDX-G-FS-12KW CRDX-G-FS-24KW

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1.5 General Design

Chapter 1: Introduction

CAUTION

When filling the water/glycol loop, all air must be bled from the piping system.

WARNING

Do not use chloride-based water-conditioning additives in the condensate drain pans. This will cause corrosion to occur on the coil fins.

1.5 General Design

The Cold Row DX unit is housed in a steel frame type cabinet rated for indoor use. The exterior of the cabinet is coated with a powder coat finish to protect against corrosion. Removable access panels are located on the front and rear of the cabinet for easy access to all components. Operator controls are conveniently located on the front of the cabinet.

NOTE: Customer-specified non-standard features or design variations may not be described in this manual. Refer to the installation and/or electrical drawings supplied with your unit for details of additional feature(s). In some cases, an addendum to this manual may also be included to further describe the feature(s).

Figure 1-2 depicts a typical internal layout and identifies the major components of a typical Cold Row unit using direct expansion (DX) refrigerant. The location of some components may vary depending on the cooling configuration selected (water, water/ glycol, or air cooled).

Figure 1-2. Typical internal layout: Cold Row DX.

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Black Box CRDX-G-FS-24KW, CRDX-W-FS-12KW, CRDX-A-FS-24KW, CRDX-W-FS-24KW, CRDX-G-FS-12KW General Design, Introduction, Page

Contents

Cold Row DX User Manual CRDX-A-FS-24KW CRDX-G-FS-12KW CRDX-A-FS-12KW CRDX-W-FS-24KWCRDX-G-FS-24KW CRDX-W-FS-12KW Customer Support InformationPage Trademarks Used in this ManualTrademarks Used in this Manual FCC and IC RFI Statements PageNormas Oficiales Mexicanas Electrical Safety Statement NOM StatementInstrucciones de Seguridad PageTable of Contents Table of ContentsPage Page Table of ContentsWater-Cooled Systems CRDX-W-FS-12KW, CRDX-W-FS-24KW Table of Contents PageTable of Contents PageTable of Contents PageChapter 1 Introduction 1. Introduction 1.1 General1.2 Product Description PagePage Chapter 1 IntroductionFigure 1-1. User interface display 12-Month Precision A/C Limited Warranty 24-Month Precision A/C Upgraded Limited WarrantyChapter 1 Introduction Page1.3 Product Warranty Cold Row Warranty - CompressorChapter 1 Introduction Page1.4.2 Safety Summary 1.4 Safety 1.4.1 GeneralChapter 1 Introduction PageChapter 1 Introduction Never work on electrical equipment unless another person who is familiar with the operation and hazards of the equipment and is competent in administering first aid is nearbyPage Chapter 1 Introduction 1.5 General DesignPage 1.5.1 Electrical Compartment 1.5.2 Circuit Breakers/Motor Start Protectors1.5.3 Compressor 1.5.3.1 Electronic Thermal Expansion Valve1.5.7 Temperature/Humidity Sensors 1.6 Optional Equipment1.6.1 Remote Mounted Supply Temperature/Humidity Sensor 1.6.2 Water DetectorChapter 2 Installation 2. Installation 2.1 Receiving the Equipment2.2 Moving the Equipment 2.3 Site Preparation2.4 Mounting/Placement Conditioned SpaceChapter 2 Installation PageChapter 2 Installation 2.5 Air DistributionPage Page Chapter 2 InstallationFigure 2-2. Typical air distribution 2.6 Optional Equipment Field Installed 2.6.1 Remote Water DetectorsChapter 2 Installation PageChapter 2 Installation 2.6.2 Remote Temperature/Humidity SensorPage 2.6.3 Outdoor Condensers Chapter 2 InstallationFigure 2-7. Typical W/G piping diagram PageChapter 2 Installation Piping ConnectionsPage Water-Water/Glycol Supply and Return Piping Connections Chapter 2 InstallationFigure 2-8. Top access piping PageChapter 2 Installation Figure 2-9. Bottom access pipingPage SCHRADER VALVE MALE PIPE THREADS2.8 Split Air-Cooled Systems 2.8.1 Refrigerant PipingChapter 2 Installation PageChapter 2 Installation 2.8.1.1 DX Refrigerant Piping ConnectionsPage 2.8.1.2 Refrigerant Pipe Sizing 2.8.2 Remote Air-Cooled CondensersChapter 2 Installation Page2.9 Utility Connections 2.9.1 Main Power 2.8.3 Condensate Drain LineChapter 2 Installation PagePage Chapter 2 InstallationFigure 2-12. Sample nameplate 2.9.1.1 Single-Phase Units 208/230 2.9.1.2 Three-Phase Units2.9.2 Optional Equipment 2.9.2.1 Remote Water Detector2.9.3.2 Glycol-Cooled Systems CRDX-G-FS-12KW, CRDX-G-FS-24KW 2.9.3.3 Remote Condenser CRDX-A-FS-12KW, CRDX-A-FS-24KWChapter 2 Installation Page2.10 System Charging Procedures 2.10.1 Water-Water/Glycol Cooled Systems2.10.2 Remote Air-Cooled Systems Chapter 2 InstallationChapter 2 Installation 2.10.2.1 Estimating Refrigerant ChargePage 2.10.2.2 Preparing System For Charging Evacuate the SystemChapter 2 Installation Page2.10.2.3 Refrigerant Charging Procedures Fine-Tuning the System ChargeInitial System Charge Chapter 2 InstallationChapter 2 Installation 2.10.2.4 -30 F Ambient ApplicationsPage Chapter 2 Installation 2.10.3.2 Saturated Refrigerant PressurePage 2.11 Settings and Adjustments 2.11.1 Water-Water/Glycol Circuit 2.11.2 Low-/High-Pressure Limit Switch2.11.3 Thermal Expansion Valve 2.11.4 Hot Gas BypassChapter 3 Startup/Commissioning 3. Startup/Commissioning 3.1 Initial Operation3.2 Step-by-Step Startup Instructions 3.3 Microprocessor Controller Programming4.1.1 Features 4.1.1.1 Field Configurable 4.1.1.2 Password ProtectionChapter 4 E2 Controller 4. E2 Controller 4.1 General4.1.2 User Interface Display Panel 4.1.2.1 Function KeysChapter 4 E2 Controller Page4.1.2.2 Contrast Adjustment 4.1.2.3 Alarms4.1.3 Controller I/O Module Controller I/O Module LayoutChapter 4 E2 Controller 4.1.4 BMS InterfacePage 4.2 Navigating Controller Display Screens 4.2.1 Menu Selection 4.2.2 MenusChapter 4 E2 Controller Page4.2.3 Display Variables 4.2.4 Cursor Position in ScreensChapter 4 E2 Controller Page4.2.6 Password Authorization Levels 4.2.6.1 Password-Protected Screen4.2.5 Modifiable Variables Chapter 4 E2 Controller4.2.6.2 Wrong Password 4.2.6.3 Setting the Passwords4.3 System Operation Chapter 4 E2 ControllerChapter 4 E2 Controller 4.3.1 Setpoint AdjustmentPage Page Chapter 4 E2 ControllerFigure 4-14. Flashing cursor 4.3.2 Alarms 4.3.2.1 Summary Alarm4.3.2.2 Customer Alarms 4.3.2.3 Custom Alarms4.4.1 Control Signals 4.4.1.1 On/Off Digital ControlChapter 4 E2 Controller Page4.4.1.2 Proportional/Integral P/I Control 4.4.2 Control Methods4.4.2.1 Temperature/RH Control 4.4.2.2 Dewpoint Control4.4.3 Operating Configurations 4.4.3.1 Compressor OperationChapter 4 E2 Controller Page4.4.3.2 Water-W/G Operation 4.4.3.3 Dehumidifying4.4.4 Airflow/Fan Speed Control Chapter 4 E2 Controller4.4.4.1 Independent Fan Speed Control 4.4.4.2 Variance from Average Fan Speed Control4.4.4.3 Temperature Proportionate Speed Control 4.4.4.4 Manual Speed ControlChapter 4 E2 Controller “Control” allows modification of basic control parameters such as setpoints and clock. Level 1 password is needed to enter this menuPage 4.5.2 Information Menu Loop 4.5.2.1 Operating Conditions4.5.2.2 Return Temperature Sensor 4.5.2.3 Return Humidity Sensor4.5.2.5 Remote Supply Temperature/Humidity Sensor 4.5.2.6 Discharge Pressure4.5.2.7 Setpoint Values 4.5.2.8 Compressor Status4.5.2.10 EHGB Status 4.5.2.11 Fan Status4.5.2.12 Group Information Menu Screens 4.5.2.13 Software Version/Date4.5.3 Alarm Log 4.5.3.1 Alarms4.5.3.2 Non-Critical Alarms 4.5.3.3 Critical Alarms4.5.3.4 Alarm Screen Messages Table 4-3. Alarm screen messagesChapter 4 E2 Controller PageChapter 4 E2 Controller 4.5.4 Control Menu LoopPage Chapter 4 E2 Controller 4.5.4.1 Setpoint ScreensPage Chapter 4 E2 Controller 4.5.4.2 Alarm Setpoint ScreensPage Chapter 4 E2 Controller Figure 4-33. Low humidity alarmPage Dirty Filter Timer 4.5.5 Service Menu Loop4.5.4.3 Clock Screen Chapter 4 E2 Controller4.5.5.1 Humidity Figure 4-40. Service menu loop selectionsChapter 4 E2 Controller PageChapter 4 E2 Controller 4.5.5.2 AlarmsPage Chapter 4 E2 Controller 4.5.5.3 SensorsPage Temp Zone Setup Blower Setup4.5.5.4 Blower Chapter 4 E2 Controller4.5.5.5 Options Menu Loop Control, StartupChapter 4 E2 Controller PageUnit Timers T/H Offset ScalingChapter 4 E2 Controller PageCustom Setup Customer Alarm Input OptionalChapter 4 E2 Controller PageChapter 4 E2 Controller Custom Alarm Setup OptionalPage Table 4-5. Alarms 9 to Table 4-6. Alarms 17 toChapter 4 E2 Controller PageTable 4-7. Alarms 25 to 32 Sensor failure alarms Table 4-8. Alarms 33 to 40 Sensor failure alarmsChapter 4 E2 Controller PageChapter 4 E2 Controller Workgroup ScreensPage 4.5.5.6 Digital In 4.5.5.7 Run HoursChapter 4 E2 Controller Page4.5.5.9 Save Configuration 4.5.5.8 BMS CommunicationsChapter 4 E2 Controller PageChapter 4 E2 Controller 4.5.5.10 Factory MenuPage 4.6.1 Workgroup Setup 4.6 Communication with the ControllerChapter 4 E2 Controller Page4.6.1.4 Out of Service 4.6.2 Configuring a Workgroup4.6.1.1 Standby 4.6.1.2 Capacity AssistChapter 4 E2 Controller 4.6.2.1 Configure the Terminal AddressPage 4.6.2.2 Configure the Controller I/O Board pLAN Address 4.6.2.3 Assign the Terminal to the ControllerChapter 4 E2 Controller Page4.6.2.4 Fault Messages 4.6.2.5 Displaying the Network Status and Firmware VersionChapter 4 E2 Controller PageChapter 4 E2 Controller 4.6.2.6 Configure WorkgroupsPage Figure 4-76. FactoryGroupsGroups Config Screen 1. See Table Table 4-12. FactoryGroupsGroups Config Screen 1 parametersChapter 4 E2 Controller PagePage Chapter 4 E2 ControllerTable 4-13. FactoryGroupGroup Rotation Screen 2 parameters Page Chapter 4 E2 ControllerTable 4-15. FactoryGroupCapacity Assist Screen 4 parameters Table 4-17. Group alarms 1 to Table 4-18. Group alarms 9 toChapter 4 E2 Controller PageTable 4-19. Group alarms 17 to Table 4-20. Group alarms 25 toChapter 4 E2 Controller PageChapter 4 E2 Controller Table 4-21. Group alarms 33 toPage 4.6.2.7 ServiceOptionsGroup Menu Screens Group SetupChapter 4 E2 Controller PageCapacity Assist Capacity Assist #2Group Sensors Chapter 4 E2 ControllerGroup Averaging 4.6.2.8 Group Information Menu ScreensChapter 4 E2 Controller PageGroup Alarms Group Sensor ValuesLead Controller Group Sensors Group Sensor StatusChapter 4 E2 Controller 4.7 BMS CommunicationsPage 4.7.1 Direct BMS Control 4.7.2 BMS CommunicationChapter 4 E2 Controller Page4.8 Troubleshooting the Control I/O Module Signal LEDs Table 4-26. I/O control module signal LEDsChapter 4 E2 Controller Page4.9 BMS Parameters, Version Chapter 4 E2 ControllerPage Table 4-27. BMS parametersChapter 4 E2 Controller PagePage Chapter 4 E2 ControllerType of unit valid numbers 0 to 6 See Variable/Value Descriptions Chapter 4 E2 ControllerPage Table 4-30. Variable/Value Descriptions4.9.4 Alarm Packed Bit Variables Table 4-32. Alarm-Packed Bit VariablesChapter 4 E2 Controller Page4.9.5 Sensor Failure Packed Bit Variables Chapter 4 E2 ControllerPage Table 4-33. Sensor Failure Packed Bit Variables4.9.6 Digital Input Packed Bit Variables Chapter 4 E2 ControllerPage Table 4-34. Digital Input Packed Bit Variables4.9.7 Digital Output Packed Bit Variables Chapter 4 E2 ControllerPage Table 4-35. Digital Output Packed Bit VariablesPage Chapter 4 E2 Controller4.9.8 Unsigned Values for HTTP, SNMP/Modbus Holding Registers/Analog Values for BACnet Chapter 5 Maintenance 5. Maintenance 5.1 Periodic General Maintenance5.1.1.1 Cleanable Filters 5.1.1 FiltersF Fgure 5-1. Cleanable filters Chapter 5 MaintenancePage 5.1.1.2 Cartridge Filters 5.1.2 EC Fans5.1.3 Coil 5.1.4 Drain Pans5.2 Troubleshooting 5.1.6 A/C SystemChapter 5 Maintenance PageSymptom Control is erratic Chapter 5 MaintenancePage Chapter 5 Maintenance Page5.3 Field Service 5.3.1 Water-Water/Glycol SystemLeak Detection/Repair 5.3.2 DX System5.3.2.3 Refrigerant Piping 5.3.3 Refrigeration System Repairs 5.3.3.1 Compressor FailureChapter 5 Maintenance Page5.3.3.2 Standard Cleanout Procedure 5.3.3.3 Burn-Out/Acidic Cleanup Procedure5.3.4 Component Replacement 5.3.4.1 Fan ReplacementChapter 5 Maintenance 5.3.4.2 Condensate Pump ReplacementPage Chapter 6 Troubleshooting 6. Troubleshooting6.2 Obtaining Warranty Parts 6.3 Obtaining Spare/Replacement PartsPage Chapter 6 TroubleshootingQuotes are given for specified listed parts for a specific unit A.1 Checklist for Completed Installation of Cold Row DX Appendix A FormsAppendix A. Forms PagePage Appendix A FormsDate Appendix B. Glossary Definition of Terms and Acronyms Appendix B Glossary Definition of Terms and AcronymsPage Page Appendix B Glossary Definition of Terms and AcronymsVDC Volt, direct current WG Water Glycol Page Page Page Tech support the way it should be Black Box Tech Support FREE! Live. 24/7About Black Box