Filter
Top Products
Checklist for Liebert XDP Startup
19
3.1.1 Calculating 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 XDP with Liebert XD cooling modules (Liebert XDCF,
Liebert XDH, Liebert XDO and Liebert XDV). The example below combines one Liebert XDP with 20
Liebert XDV8 cooling modules.
Table 10 Calculating refrigerant charge—example
Components
Number of Units
or Piping Length,
feet
Pounds Per
Component Total, lb.
Liebert XDP 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
Components
Number of Units
or Piping Length
Pounds Per
Component Total
Total