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724-746-5500 | blackbox.com
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724-746-5500 | blackbox.com
Table of Contents
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