Item
Description
Item
Description
1
Cable access
6
Pump drainage hole
2
Pump drainage connection
7
Chilled water inlet and outlet hole
5.2 Connecting Water Inlet and Outlet Pipes
NOTE: The maximum inlet water pressure is 1.6 MPa.
NOTE: The water pressure should overcome the pressure drop in the system.
NOTE: The pump flow should be 20% to 25% larger than the maximum water flow in the unit.
NOTE: For CRC30, it is recommended that the inlet water temperature is 5 °C to 15.5 °C (41 °F to 59.9 °F). For CRC60,
it is recommended that the inlet water temperature is 10 °C to 22 °C (50 °F to 71.6 °F).
The water inlet/outlet pipes are connected by threaded connectors.
Model
Threaded Connector
External Diameter mm (in.)
CRC30
Rp 1-1/4"
28 (1.1)
CRC60
Rp 1-1/2"
35 (1.38)
Table 5.1 Threaded Connector Specification
5.2.1 Releasing Pre-charged Nitrogen
The unit has been pre-charged with 2 Bar (29 psi) Nitrogen. Open the air discharge valve to release the Nitrogen from the
pipeline.
1.
Open the rear door.
2.
Remove filters.
a. Pull the handle in the middle of the fastening plate above the upper filter to remove the plate. Then
remove the upper filter.
b. Tilt the fastening plate above the lower filter and remove the plate. Then remove the lower filter.
5 Piping Connections
31
Vertiv™ Liebert® CRV CRC30 and CRC60 Chilled Water Cooling System User Manual
