Liebert XDC Calculating Refrigerant Charge-Example, Calculating refrigerant charge-example

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Piping and Filling with Refrigerant: R-134a and R-407c Circuits

Table 9 R-134a refrigerant charge for Liebert XD Flex Pipe connector lines to and from any model Liebert XDO/Liebert XDH/Liebert XDV/Liebert XDCF

Refrigerant Charge, lb. (kg)

Metal Liebert XD Flex Pipe Connector Length

Supply Line Diameter 1/2"

0.3lb. (0.14) 4 ft. Liebert XD Flex Pipe Liebert XDH/Liebert XDO/Liebert XDV/Liebert XDCF supply

0.5lb. (0.23) 6 ft. Liebert XD Flex Pipe Liebert XDH/Liebert XDO/Liebert XDV/Liebert XDCF supply

0.7lb. (0.32) 8 ft. Liebert XD Flex Pipe Liebert XDH/Liebert XDO/Liebert XDV/Liebert XDCF supply

0.8lb. (0.36) 10 ft. Liebert XD Flex Pipe Liebert XDH/Liebert XDO/Liebert XDV/Liebert XDCF supply

Return Line Diameter 5/8"

0.01lb. (0.01) 4 ft. Liebert XD Flex Pipe existing Liebert XDV systems

0.02lb. (0.01) 6 ft. Liebert XD Flex Pipe existing Liebert XDV systems

0.03lb. (0.01) 8 ft. Liebert XD Flex Pipe existing Liebert XDV systems

0.03lb. (0.01) 10 ft. Liebert XD Flex Pipe existing Liebert XDV systems

Return Line Diameter 1"

0.13lb. (0.06) 4 ft Liebert XD Flex Pipe Liebert XDH/Liebert XDO/Liebert XDV/Liebert XDCF supply

0.2lb. (0.096) 6 ft Liebert XD Flex Pipe Liebert XDH/Liebert XDO/Liebert XDV/Liebert XDCF supply

0.27lb. (0.126) 8 ft Liebert XD Flex Pipe Liebert XDH/Liebert XDO/Liebert XDV/Liebert XDCF supply

0.33lb. (0.15) 10 ft Liebert XD Flex Pipe Liebert XDH/Liebert XDO/Liebert XDV/Liebert XDCF supply

2.5.1Calculating Refrigerant Charge—Example

Using Tables 6, 7, 8 and 9, calculate the refrigerant charge of the individual sections of your Liebert XD system. Add the calculated charge amounts to determine the amount of R-134a refrigerant required for one system combining a Liebert XDC with Liebert XD cooling modules (Liebert XD Cool- Frame, Liebert XDH, Liebert XDO and Liebert XDV). The example below combines one Liebert XDC with 20 Liebert XDV8 cooling modules.

Table 10 Calculating refrigerant charge—example

 

Number of Units

 

 

 

or Piping Length,

Pounds

 

Components

feet

Per Component

Total, lb.

Liebert XDC

1

157

157

 

 

 

 

Liebert XDV8 Cooling Modules

20

2.32

46.4

 

 

 

 

Supply Main, 1-1/8"

100

0.45

45

 

 

 

 

Return Main, 2-1/8"

100

0.28

28

 

 

 

 

Liebert XDV 1/2" supply Liebert XD Flex Pipes

20

0.8

16

 

 

 

 

Liebert XDV 5/8" return Liebert XD Flex Pipes

20

0.03

0.6

 

 

 

 

 

 

Total

293

Table 11 Worksheet to calculate refrigerant charge

 

Number of Units

Pounds

Components

or Piping Length

Per Component

 

 

 

Total

Total

21

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Contents Liebert XDC General Safety Guidelines Voltage-phase-frequency Density system = 380/415-3ph-50HzExample XDC160AA Table of Contents Specifications Alarm Descriptions and SolutionsFigures Tables Product Description General Product InformationEquipment Inspection Equipment HandlingRemoval of Skid Handling With SkidRemove tie-down brackets Positioning the Liebert XDC Liebert XDC dimensions, weightMechanical Considerations Removing Piano JacksLiebert XDC piping connection sizes Piping locationsPlacing the Liebert XDC on a Floor Stand Liebert XDC water/glycol piping connection Sizes Detail aTOP View of Floor Stand Positioning the Liebert XDC with Floor Stand Dimensions and clearances for Liebert XDC on floor standHigh Voltage Connections Connecting High-Voltage CablesElectrical enclosure knockout locations for field wiring Contactors Liebert XDC heat rejection connection points Extra Low Voltage ConnectionsField Connections-All Units Field Connections-Optional for All UnitsField Connections-Air Cooled Units only Extra Low Voltage field connections points Supply, return pipe sizes for Liebert XD refrigerant loop European Union Fluorinated Greenhouse Gas RequirementsRecommended Pipe Size Liebert XDC Interconnection With Liebert XD Cooling ModulePiping 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 System refrigerant charge for the supply and return mains Filling the Pumped Circuit-R-134aCalculating Refrigerant Charge-Example Calculating refrigerant charge-exampleWorksheet to calculate refrigerant charge Double discharge riser layout Install Double Discharge RisersPage Installation data-Lee-Temp, one-circuit, four-fan model See for details on piping connections Piping Schematic Recommended refrigerant line sizes, DX R-407c, OD copper General arrangement air cooled Liebert XDC Lee-Temp ControlRecommended refrigerant line sizes for DCSL616 For mounting instructions, refer to Figure Lee-Temp Control Materials Supplied Lee-Temp PipingIndoor water/glycol cooled module R-407C refrigerant charge Filling the Direct Expansion DX Circuit-R-407cIndoor unit refrigerant charge-R-407c Outdoor air condenser charge-R-407cInstallation 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 User interface keypad functions Feature OverviewMicroprocessor Control DisplayMain Menu Feature OverviewViewing or Changing Settings ControlsHI AIR Temp Setpoint functions, default values and allowable rangesSetpoints MIN Temp SPTime Active AlarmsAlarm History StatusPump Start TD Setup OperationRestart DegreesDipswch Pump OFF TDLead Pump Lead TandemSetup Password Setpt PasswordCalibrate Sensors Alarm EnableAlarm Time Delay COM Alarm EnableCustom Alarms Custom Text DiagnosticsAlarm Descriptions and Solutions Alarm DescriptionsRed and Green Lamp Indicators Enable / Disable Alarms Alarm Time DelaysView Active Alarms System Shutdown Causes View Alarm HistoryLiebert XDC troubleshooting TroubleshootingToo warm Maintenance Fluorinated Greenhouse Gas RequirementsAir Cooled Condenser Shell and Tube Condensers Testing the Water Regulating Valve FunctionGlycol Solution Maintenance Water/Glycol Floor Stand CondenserLiebert XDC specifications SpecificationsPerformance Data Performance DataHeat Rejection Equipment Piping Connections204 Page That Ne tIti Ti n
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