1 calculating refrigerant charge—example, Table 10 calculating refrigerant charge—example, Table 11 worksheet to calculate refrigerant charge – Liebert Refrigerant Distribution Unit XDP User Manual
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Checklist for Liebert XDP Startup
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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