Liebert XDC Feature Overview, Microprocessor Control, Display, User interface keypad functions

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Microprocessor Control

5.0MICROPROCESSOR CONTROL

5.1Feature Overview

The microprocessor control for the Liebert XDC unit features an easy-to-use menu-driven LCD. The menus, control features and circuit board details are described in this section.

Figure 32 User interface

Status Display

Up Arrow Key

Down Arrow Key

On/Off Key

Alarm Silence Key

Active alarms are displayed on the LCD screen and sound an audible beep. To silence an alarm, press the Alarm Silence/Help key as prompted on the display.

Setpoints, DIP switch settings and other selections were made during factory testing of the unit based on typical operating conditions. (Other default selections were made according to options included with the unit.)

ADJUST THE FACTORY DEFAULTS ONLY IF THEY DO NOT MEET YOUR SPECIFICATIONS.

Allowable ranges are displayed by pressing the Help key. A password will be required (if enabled) to change setpoints, time delays, etc.

The display normally shown includes the present room temperature, humidity, active status func- tions and active alarms. More detailed status and alarm information is available from the menu.

5.1.1Display

To turn the unit On, press the On/Off (I/O) key after power is applied to the Liebert XDC. To turn the unit Off, press the On/Off (I/O) key before power is disconnected.

Table 20 User interface keypad functions

	Keypad	Function
	On/Off (I/O)	Turns the unit On or Off (top far left keypad)

	Menu	Enables the user to access the program menu to change setpoints, alarms, etc. (top near left)

	Up Arrow Key	Raises the value of displayed parameter while in a set mode (set points, time, etc).(arrow, top
	Up Arrow Key	near right)
		near right)
	Escape (Esc)	Allows user to move back to a previous menu (top far right)

	Alarm Silence	If an alarm is present, press this key to silence the alarm. Help text will appear if this key is
	Alarm Silence	pressed when no alarm is present (bottom left)
		pressed when no alarm is present (bottom left)
	Down Arrow	Lowers the value of displayed parameter while in a set mode (set points, time, etc).(arrow,
	Key	bottom near right).
	Enter	After setting a control value, press ENTER to store the information in the microprocessor
	Enter	(bottom right).
		(bottom right).

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Contents Liebert XDC General Safety Guidelines Voltage-phase-frequency Density system = 380/415-3ph-50HzExample XDC160AA Table of Contents Alarm Descriptions and Solutions SpecificationsFigures Tables Equipment Handling General Product InformationEquipment Inspection Product DescriptionHandling With Skid Removal of SkidRemove tie-down brackets Removing Piano Jacks Liebert XDC dimensions, weightMechanical Considerations Positioning the Liebert XDCPiping locations Liebert XDC piping connection sizesPlacing the Liebert XDC on a Floor Stand Detail a Liebert XDC water/glycol piping connection SizesTOP View of Floor Stand Dimensions and clearances for Liebert XDC on floor stand Positioning the Liebert XDC with Floor StandConnecting High-Voltage Cables High Voltage ConnectionsElectrical enclosure knockout locations for field wiring Contactors Extra Low Voltage Connections Liebert XDC heat rejection connection pointsField Connections-All Units Field Connections-Optional for All UnitsField Connections-Air Cooled Units only Extra Low Voltage field connections points Liebert XDC Interconnection With Liebert XD Cooling Module European Union Fluorinated Greenhouse Gas RequirementsRecommended Pipe Size Supply, return pipe sizes for Liebert XD refrigerant loopPiping Installation Method Piping Installation-R-134a Pumped CircuitPiping Mains Bypass Flow Controllers Bypass flow controllers for a Liebert XDC-based systemRequired Number Evacuation and Leak Check-R-134a Pumped Circuit InsulationLiebert XDP Liebert XDC Filling the Pumped Circuit-R-134a System refrigerant charge for the supply and return mainsCalculating Refrigerant Charge-Example Calculating refrigerant charge-exampleWorksheet to calculate refrigerant charge Install Double Discharge Risers Double discharge riser layoutPage Installation data-Lee-Temp, one-circuit, four-fan model See for details on piping connections Piping Schematic General arrangement air cooled Liebert XDC Lee-Temp Control Recommended refrigerant line sizes, DX R-407c, OD copperRecommended refrigerant line sizes for DCSL616 For mounting instructions, refer to Figure Lee-Temp Piping Lee-Temp Control Materials SuppliedOutdoor air condenser charge-R-407c Filling the Direct Expansion DX Circuit-R-407cIndoor unit refrigerant charge-R-407c Indoor water/glycol cooled module R-407C refrigerant chargeInstallation Checklist Checklist for Liebert XDC Startup Liebert XDC pump light indicatorIndicator Lights Description Green Red Compressor oil types Refrigerant TypeCompressor Type 407c Liebert XDC system is now ready to be turned on Display Feature OverviewMicroprocessor Control User interface keypad functionsControls Feature OverviewViewing or Changing Settings Main MenuMIN Temp SP Setpoint functions, default values and allowable rangesSetpoints HI AIR TempStatus Active AlarmsAlarm History TimeDegrees Setup OperationRestart Pump Start TDLead Tandem Pump OFF TDLead Pump DipswchSetpt Password Setup PasswordAlarm Enable Calibrate SensorsAlarm Time Delay COM Alarm EnableCustom Alarms Diagnostics Custom TextAlarm Descriptions Alarm Descriptions and SolutionsRed and Green Lamp Indicators Enable / Disable Alarms Alarm Time DelaysView Active Alarms View Alarm History System Shutdown CausesTroubleshooting Liebert XDC troubleshootingToo warm Maintenance Fluorinated Greenhouse Gas RequirementsAir Cooled Condenser Water/Glycol Floor Stand Condenser Testing the Water Regulating Valve FunctionGlycol Solution Maintenance Shell and Tube CondensersSpecifications Liebert XDC specificationsPiping Connections Performance DataHeat Rejection Equipment Performance Data204 Page Ti n Ne tIti That