Vertiv Liebert XDC User Manual

2. Purge the hoses.
3. Calculate the amount of R-134a refrigerant needed to charge the system, using the values in
Table 4.3 below, Table 4.4 below, Table 4.5 on the facing page and Table 4.6 on the facing
page; for assistance, refer to Calculating Refrigerant Charge—Example on page44. The
section includes a worksheet to calculate system refrigerant charge requirements.
4. Weigh in the calculated charge.
5. After adding the calculated charge, allow the system to sit 15 to 30 minutes to reach
equilibrium. Observe the refrigerant level through the sight glasses of the receiver.
6. If the refrigerant level is improper, the charge must be adjusted.
If the level is too high or too low, recalculate the required charge and reduce or increase the
amount as needed to reach the proper level.
NOTE: All lengths in Table 4.4 below, Table 4.5 on the facing page and Table 4.6 on the facing page
are actual pipe lengths, not equivalent pipe lengths.
NOTE: System refrigerant volume calculations derived from Table 4.3 below, Table 4.4 below, Table
4.5 on the facing page and Table 4.6 on the facing page are based on a fully loaded system.
Additional charge may be required for lightly loaded systems.
Refrigerant Charge,
lb. (kg)
Per Liebert XD Unit
(Excludes Connector Lines
to and from Liebert XD Cooling Module)
157 lb. (65.7kg) Liebert XDC
3.55 lb. (1.61kg) Liebert XDO
2.32 lb. (1.05kg) Liebert XDV
5.32 lb. (2.41kg) Liebert XDH
1.41 lb. (0.64kg) Liebert XDCF
4.0 lb. (1.81kg) Liebert XDR
Table 4.3
System R-134a charge for a Liebert XDC with any model Liebert
XDH/Liebert XDO/Liebert XDV/Liebert XDCF
Refrigerant Charge,
lb/foot (kg/m)
Supply/Return Main Length and Diameter
0.45 (0.67) Main supply actual length per 1-1/8" OD copper tubing
0.68 (1.01) Main supply actual length per 1-3/8" OD copper tubing
0.28 (0.42) Main return actual length per 2-1/8" OD copper tubing
0.43 (0.64) Main return actual length per 2-5/8" OD copper tubing
Table 4.4
System refrigerant charge for the supply and return mains
Vertiv | Liebert® XDC™ User Manual | 42

Vertiv Liebert XDC Specifications

General

Brand	Vertiv
Model	Liebert XDC
Category	Freezer
Language	English