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

Checklist for Liebert XDP Startup

3.1.1Calculating 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 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

	Number of Units
	or Piping Length,	Pounds Per
Components	feet	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

19