Liebert XDC - page 47

Microprocessor Control

41

PUMP OFF TD

The user can set the amount of time a pump will remain off when refrigerant flow is interrupted or stops.

After the time delay has expired, the control will try to restart the pump (see PUMP START TD).

LEAD PUMP

This allows the user to select which pump is the active pump. It can be set to PUMP 1 or PUMP 2.

The control will operate the respective pump unless a loss of flow condition occurs. On a LOSS OF

FLOW condition, the control will switch to the standby pump after the LOSS OF FLOW alarm time

delay has elapsed and the LOSS OF FLOW alarm has been annunciated. The default is PUMP 1.

LEAD TANDEM

Not currently used.

DIPSWCH

This allows the user to read the eight-position DIP switch located on the control board. The switches

are numbered according to the numbers on the DIP switch. The numeral 1 indicates the switch is ON

and a 0 indicates the switch is OFF. These switches are factory-set and should not require any user

changes.

VALVE TIME

Valve travel time is not currently used.

VLV ST OPEN

Valve start open % is not currently used.

VLV START TD

Valve start time delay is not currently used.

MIN VLV SET

Minimum valve setpoint is not currently used.

COMP SEQ ON

When the Liebert XDC is started, this is the time delay before the next compressor comes on when the

control is sequencing on compressors.

COMP OFF TD

This is how long a compressor must be off before the control will turn it back on.

INNERSTAGE TD

This is how long the control must wait between compressor stage changes during normal operation.

WSK1 TD

Compressor winter start kit time delay for all compressors.

WSK2 TD

The winter start kit 2 time delay is not currently used.

100% START TD

This is how long the control will keep the unit at 100% cooling during startup after all compressors

have staged on.

Table 23 Liebert XDC DIP switches and factory settings

DIP Switch Factory Setting

1Off

2Off

3Off

4Off

5Off

6 Off = Standard, On = Dual Source

7Off

8Off

Contents

Main GENERAL SAFETY GUIDELINES A XD C 160 1 Example: XDC160AA 1 A TABLE OF CONTENTS 2.0 PIPING AND FILLING WITH REFRIGERANT: R-134A AND R-407C CIRCUITS . . . . . . . . . . . . .16 Page FIGURES TABL ES 1.0 PRODUCT DESCRIPTION 1.1 General Product Information Compressor 1.1.1 Product/System Description 1.2 Equipment Inspection 1.3.1 Handling With Skid 1.3.2 Removal of Skid Page 1.3.3 Removing Piano Jacks 1.4 Mechanical Considerations Unit Dimensional Data 1.4.1 Positioning the Liebert XDC Floor Cutout Dimensions DPN000768 Page 2, Rev. 6 Figure 6 Piping locations Table 2 Liebert XDC piping connection sizes 1.4.2 Placing the Liebert XDC on a Floor Stand Figure 7 Water/glycol Liebert XDC on a floor standpositioning and piping connections Table 3 Liebert XDC water/glycol piping connection Sizes Welded Tab A DETAIL A Page 1.4.3 Positioning the Liebert XDC with Floor Stand 1.5 High Voltage Connections 1.5.1 Connecting High-Voltage Cables Page Page 1.6 Extra Low Voltage Connections Electrical handy box, factory-installed with cover Page Figure 18 Extra Low Voltage field connections points 2.0 PIPING AND FILLING WITH REFRIGERANT: R-134A AND R-407C CIRCUITS 2.1 European Union Fluorinated Greenhouse Gas Requirements 2.2 Recommended Pipe Size 2.3 Liebert XDC Interconnection With Liebert XD Cooling Module 2.4 Piping Installation Method 2.4.1 Piping InstallationR-134a Pumped Circuit Piping Mains Bypass Flow Controllers Evacuation and Leak CheckR-134a Pumped Circuit Insulation 2.5 Filling the Pumped CircuitR-134a 2.5.1 Calculating Refrigerant ChargeExample 2.5.2 Piping for Direct Expansion (DX) CircuitR-407c Air Cooled Units 2.6 Install Double Discharge Risers Page Piping and Filling with Refrigerant: R-134a and R-407c Circuits 24 Figure 24 Installation dataLee-Temp, one-circuit, four-fan model For CSL616 condenser piping connections, see Figures28 and 29. Piping and Filling with Refrigerant: R-134a and R-407c Circuits 25 Figure 25 Installation dataLee-Temp, one-circuit, high ambient six-fan model See Figure29 for details on piping connections. Figure 26 Liebert XDC piping schematic and Lee-Temp heater pad wiring Piping Schematic Lee-Temp Heater Pad Wiring Page Page Figure 29 CSL616 piping connectionstwo refrigerant circuits connected for parallel refrigerant flow Lee-Temp Piping Lee-Temp Control Materials Supplied Evacuation and Leak CheckR-407c (DX) Circuit (Air and Water/Glycol Systems) 2.7 Filling the Direct Expansion (DX) CircuitR-407c 3.0 INSTALLATION CHECKLIST 4.0 CHECKLIST FOR LIEBERT XDC STARTUP 4.1 System Refrigerant Charges Over 35 lb. (15.9kg) Require Additional Oil Page 5.0 MICROPROCESSOR CONTROL 5.1 Feature Overview 5.1.1 Display 5.2 Controls 5.2.1 Feature Overview 5.2.2 Status Display 5.3 Main Menu 5.3.1 Viewing or Changing Settings 5.3.2 SETPOINTS MIN TEMP SP HI AIR TEMP LO AIR TEMP 5.3.3 STATUS 5.3.4 ACTIVE ALARMS 5.3.5 ALARM HISTORY 5.3.6 TIME 5.3.7 DATE 5.3.8 SETUP OPERATION RESTART C/F DEGREES PUMP START TD PUMP WAIT TD Page 5.3.9 SETPT PASSWORD 5.3.10 SETUP PASSWORD 5.3.11 CALIBRATE SENSORS 5.3.12 ALARM ENABLE 5.3.13 ALARM TIME DELAY 5.3.14 COM ALARM ENABLE 5.3.15 CUSTOM ALARMS 5.3.16 CUSTOM TEXT 5.3.17 DIAGNOSTICS LLSV1, LLSV2 HGSV1, HGSV2 HGV1, HGV2 6.0 ALARM DESCRIPTIONS AND SOLUTIONS 6.1 Alarm Descriptions 6.2 Red and Green Lamp Indicators 6.3 Enable / Disable Alarms 6.4 Alarm Time Delays 6.5 View Active Alarms 6.6 View Alarm History 6.7 System Shutdown Causes 7.0 T Table 24 Liebert XDC troubleshooting Table 24 Liebert XDC troubleshooting (continued) 8.0 M 8.1 Fluorinated Greenhouse Gas Requirements 8.2 Air Cooled Condenser 8.3 Water/Glycol Floor Stand Condenser 8.3.1 Shell and Tube Condensers 8.3.2 Regulating Valves Testing the Water Regulating Valve Function 8.3.3 Glycol Solution Maintenance 9.0 S Table 25 Liebert XDC specifications Page Page Page Ensuring The High Availability 0f Mission-Critical Data And Applications. Technical Support / Service Locations