Mechanical Installation
27
ITEMS
DESCRIPTION
1
Access valve
Figure 2-19 Oil Injection Schrader Valve
Charged amount of refrigerant oil = 1.5L + (the actual length of the liquid return pipe-30m) x the amount of refrigerant
charged per unit length x 6%
provides the amount of refrigerant charged per unit length as per the diameter and the length of return piping.
Table 2-13 Amount of Refrigerant Charged per Unit Length
Outer Diameter of Liquid
Return Pipe (mm)
Charged Amount of Refrigerant per Unit
Length (kg/m)
16
0.169
19
0.238
22
0.315
25
0.415
Note: Before commissioning the Liebert XD system for the first time, it must be recharged with refrigerant oil as per the
requirement. The lack of refrigerant oil will cause the damage to the compressor.
Note: Ensure to select the appropriate refrigerant oil recommended by manufacturer, otherwise the compressor will be
damaged.
Note: For refrigerant oil charging details of other Vertiv™
Liebert®
XDC systems, contact Vertiv local representative.
For any consequences resulting from inferior quality refrigerant, Vertiv does not assume warranty
responsibility. Select the type of lubricant oil in accordance with the compressor manufacturer’s
specification.
