Black Box CRDX-A-FS-12KW User Manuals

Table of Contents

• 1. Introduction

  10
• 1.1 General

  10
• 1.2 Product Description

  10
• 1.3 Product Warranty

  13
• 1.4 Safety

  14
• 1.4.1 General

  14
• 1.4.2 Safety Summary

  14
• 1.5 General Design

  16
• 1.5.1 Electrical Compartment

  17
• 1.5.2 Circuit Breakers/Motor Start Protectors

  17
• 1.5.3 Compressor

  17
• 1.5.3.1 Electronic Thermal Expansion Valve

  17
• 1.5.3.2 Electronic Hot Gas Bypass

  17
• 1.5.4 Coils

  17
• 1.5.5 Condensate Pump

  17
• 1.5.6 EC Fans

  17
• 1.5.7 Temperature/Humidity Sensors

  18
• 1.6 Optional Equipment

  18
• 1.6.1 Remote Mounted Supply Temperature/Humidity Sensor

  18
• 1.6.2 Water Detector

  18
• 1.6.3 Smoke Detector

  18
• 1.6.4 Firestat

  18
• 2. Installation

  19
• 2.1 Receiving the Equipment

  19
• 2.2 Moving the Equipment

  19
• 2.3 Site Preparation

  19
• 2.4 Mounting/Placement

  20
• 2.5 Air Distribution

  21
• 2.6 Optional Equipment (Field Installed)

  23
• 2.6.1 Remote Water Detectors

  23
• 2.6.2 Remote Temperature/Humidity Sensor

  24
• 2.6.3 Outdoor Condensers

  25
• 2.7 Water-Water/Glycol Cooled DX

  25
• 2.8 Split Air Cooled Systems

  29
• 2.8.1 Refrigerant Piping

  29
• 2.8.1.1 DX Refrigerant Piping Connections

  30
• 2.8.1.2 Refrigerant Pipe Sizing

  31
• 2.8.2 Remote Air-Cooled Condensers

  31
• 2.8.3 Condensate Drain Line

  32
• 2.9 Utility Connections

  32
• 2.9.1 Main Power

  32
• 2.9.1.1 Single-Phase Units 208/230 V

  34
• 2.9.1.2 Three-Phase Units

  34
• 2.9.2 Optional Equipment

  34
• 2.9.2.1 Remote Water Detector

  34
• 2.9.2.2 Remote Temperature/Humidity Sensor

  34
• 2.9.2.3 Remote On/Off

  34
• 2.9.3 Outdoor Equipment

  34
• 2.9.3.1 Water-Cooled Systems (CRDX-W-FS-12KW, CRDX-W-FS-24KW)

  34
• 2.9.3.2 Glycol-Cooled Systems (CRDX-G-FS-12KW, CRDX-G-FS-24KW)

  35
• 2.9.3.3 Remote Condenser (CRDX-A-FS-12KW, CRDX-A-FS-24KW)

  35
• 2.10 System Charging Procedures

  36
• 2.10.1 Water-Water/Glycol Cooled Systems

  36
• 2.10.2 Remote-Air Cooled Systems

  36
• 2.10.2.1 Estimating Refrigerant Charge

  37
• 2.10.2.2 Preparing System for Charging

  38
• 2.10.2.3 Refrigerant Charging Procedures

  39
• 2.10.2.4 -30° F Ambient Applications

  40
• 2.10.3 Refrigerant Characteristics

  41
• 2.10.3.1 Pressure/Temperature Settings

  41
• 2.10.3.2 Saturated Refrigerant Pressure

  41
• 2.11 Settings and Adjustments

  42
• 2.11.1 Water–Water/Glycol Circuit

  42
• 2.11.2 Low-/High-Pressure Limit Switch

  42
• 2.11.3 Thermal Expansion Valve

  42
• 2.11.4 Hot Gas Bypass

  42
• 2.11.5 EC Fans

  42
• 3. Startup/Commissioning

  43
• 3.1 Initial Operation

  43
• 3.2 Step-by-Step Startup Instructions

  43
• 3.3 Microprocessor Controller Programming

  43
• 4. E2 Controller

  44
• 4.1 General

  44
• 4.1.1 Features

  44
• 4.1.1.1 Field Configurable

  44
• 4.1.1.2 Password Protection

  44
• 4.1.1.3 Restorable Setpoint Parameters

  44
• 4.1.1.4 A/C Grouping pLAN Operation

  44
• 4.1.2 User Interface Display Panel

  45
• 4.1.2.1 Function Keys

  45
• 4.1.2.2 Contrast Adjustment

  46
• 4.1.2.3 Alarms

  46
• 4.1.3 Controller I/O Module

  46
• 4.1.4 BMS Interface

  47
• 4.2 Navigating Controller Display Screens

  48
• 4.2.1 Menu Selection

  48
• 4.2.2 Menus

  48
• 4.2.3 Display Variables

  49
• 4.2.4 Cursor Position in Screens

  49
• 4.2.5 Modifiable Variables

  50
• 4.2.6 Password Authorization Levels

  50
• 4.2.6.1 Password-Protected Screen

  50
• 4.2.6.2 Wrong Password

  51
• 4.2.6.3 Setting the Passwords

  51
• 4.3 System Operation

  51
• 4.3.1 Setpoint Adjustment

  52
• 4.3.1.1 Saving and Restoring Setpoint Parameters

  54
• 4.3.2 Alarms

  54
• 4.3.2.1 Summary Alarm

  54
• 4.3.2.2 Customer Alarms

  54
• 4.3.2.3 Custom Alarms

  54
• 4.4 Controller Operation

  54
• 4.4.1 Control Signals

  55
• 4.4.4.1 On/Off Digital Control

  55
• 4.4.4.2 Proportional/Integral (P/I) Control

  56
• 4.4.2 Control Methods

  56
• 4.4.2.1 Temperature/RH Control

  56
• 4.4.2.2 Dewpoint Control

  56
• 4.4.3 Operating Configurations

  57
• 4.4.3.1 Compressor Operation

  57
• 4.4.3.2 Water–W/G Operation

  58
• 4.4.3.3 Dehumidifying

  58
• 4.4.4 Airlfow/Fan Speed Control

  58
• 4.4.4.1 Independent Fan Speed Control

  59
• 4.4.4.2 Variance from Average Fan Speed Control

  59
• 4.4.4.3 Temperature Proportionate Speed Control

  59
• 4.4.4.4 Manual Speed Control

  59
• 4.4.5 Remote On/Off

  59
• 4.5 Menu Screens

  59
• 4.5.1 Main Menu

  59
• 4.5.2 Information Menu Loop

  61
• 4.5.2.1 Operating Conditions

  61
• 4.5.2.2 Return Temperature Sensor

  61
• 4.5.2.3 Return Humidity Sensor

  61
• 4.5.2.4 Temperature Sensors

  61
• 4.5.2.5 Remote Supply Temperature/Humidity Sensor

  62
• 4.5.2.6 Discharge Pressure

  62
• 4.5.2.7 Setpoint Values

  62
• 4.5.2.8 Compressor Status

  62
• 4.5.2.9 EEV Status

  62
• 4.5.2.10 EHGB Status

  63
• 4.5.2.11 Fan Status

  63
• 4.5.2.12 Group Information Menu Screens

  63
• 4.5.2.13 Software Version/Date

  63
• 4.5.3 Alarm Log

  64
• 4.5.3.1 Alarms

  64
• 4.5.3.2 Non-Critical Alarms

  64
• 4.5.3.3 Critical Alarms

  64
• 4.5.3.4 Alarm Screen Messages

  65
• 4.5.4 Control Menu Loop

  66
• 4.5.4.1 Setpoint Screens

  67
• 4.5.4.2 Alarm Setpoint Screens

  68
• 4.5.4.3 Clock Screen

  70
• 4.5.5 Service Menu Loop

  70
• 4.5.5.1 Humidity

  71
• 4.5.5.2 Alarms

  72
• 4.5.5.3 Sensors

  73
• 4.5.5.4 Blower

  74
• 4.5.5.5 Options Menu Loop

  75
• 4.5.5.6 Digital In

  82
• 4.5.5.7 Run Hours

  82
• 4.5.5.8 BMS Communication

  83
• 4.5.5.9 Save Configruation

  83
• 4.5.5.10 Factory Menu

  84
• 4.6 Communication with the Controller

  85
• 4.6.1 Workgroup Setup

  85
• 4.6.1.1 Standby

  86
• 4.6.1.2 Capacity Assist

  86
• 4.6.1.3 Unit Rotation

  86
• 4.6.1.4 Out of Service

  86
• 4.6.2 Configuring a Workgroup

  86
• 4.6.2.1 Configure the Terminal Address

  87
• 4.6.2.2 Configure the Controller (I/O Board) pLAN Address

  88
• 4.6.2.3 Assign the Terminal to the Controller

  88
• 4.6.2.4 Fault Messages

  89
• 4.6.2.5 Displaying the Network Status and Firmware Version

  89
• 4.6.2.6 Configure Workgroups

  90
• 4.6.2.7 Service>Options>Group Menu Screens

  97
• 4.6.2.8 Group Information Menu Screens

  99
• 4.7 BMS Communications

  101
• 4.7.1 Direct BMS Control

  102
• 4.7.2 BMS Communication

  102
• 4.8 Troubleshooting the Control I/O Module

  103
• 4.9 BMS Parameters, Version 1.2

  104
• 4.9.1 Signed Values for HTTP, SNMP/Modbus Holdling Registers/Analog Values for BACnet

  105
• 4.9.2 Unsigned Values for HTTP, SNMP/Modbus Holdling Registers/Analog Values for BACnet

  106
• 4.9.3 Boolean Values for HTTP, SNMP/Modbus Coils/Binary Values for BACnet

  107
• 4.9.4 Alarm Packed Bit Variables

  108
• 4.9.5 Sensor Failure Packed Bit Variables

  109
• 4.9.6 Digital Input Packed Bit Variables

  110
• 4.9.7 Digital Output Packed Bit Variables

  111
• 4.9.8 Unsigned Values for HTTP, SNMP/Modbus Holding Registers/Analog Values for BACnet

  112
• 4.9.9 Boolean Values for HTTP, SNMP/Modbus Coils/Binary Values for BACnet

  112
• 5. Maintenance

  113
• 5.1 Periodic General Maintenance

  113
• 5.1.1 Filters

  113
• 5.1.1.1 Cleanable Filters

  113
• 5.1.1.2 Cartridge Filters

  115
• 5.1.2 EC Fans

  115
• 5.1.3 Coil

  115
• 5.1.4 Drain Pans

  115
• 5.1.5 Condensate Pump

  115
• 5.1.6 A/C System

  116
• 5.2 Troubleshooting

  116
• 5.3 Field Service

  119
• 5.3.1 Water–Water/Glycol System

  119
• 5.3.2 DX System

  119
• 5.3.2.1 Leak Detection

  119
• 5.3.2.2 Leak Repair

  119
• 5.3.2.3 Refrigerant Piping

  120
• Refrigeration System Repairs

  120
• 5.3.3.1 Compressor Failure

  120
• 5.3.3.2 Standard Cleanout Procedure

  121
• 5.3.3.3 Burn-Out/Acidic Cleanup Procedure

  121
• Component Replacement

  121
• 5.3.4.1 Fan Replacement

  121
• 5.3.4.2 Condensate Pump Replacement

  122
• Troubleshooting

  123
• 6.1 Contacting Technical Support

  123
• 6.2 Obtaining Warranty Parts

  123
• 6.3 Obtaining Spare/Replacement Parts

  123
• Appendix A. Forms

  125
• A.1 Checklist for Completed Installation

  125
• A.2 Periodic General Maintenance Checks and Service Checklist

  126
• Appendix B. Glossary: Definition of Terms and Acronyms

  127