7. Check the return fluid pressure data point. Pump must be able to run at 100% speed with inlet pressure no lower
than 4 psi. Return fluid pressure can be checked from the Liebert® iCOM™ screen. Refer to the Vertiv™
CoolPhase CDU and Vertiv™ Liebert® iCOM™ User Manuals.
It may be necessary to repeat the fill steps after the pump(s) have run to remove trapped air from the system.
NOTE: Manual mode will time out after 30 minutes.
8. Engineer of record and installer must provide and install a bypass jumper assembly at the rack manifold. The
engineer of record must specify and determine the type of in-rack bypass assembly at the manifold
(supply/return). Engineer of record to specify quantity and location of bypass assembly.
Figure 7.5 Example of In-Rack Manifold Supply and Return Hose Kits with Field Provided Quick Connects
Item Description
1 In-rack hose connection to IT equipment – Supply
2 In-rack hose connection to IT equipment – Return
NOTE: IT Quick connect coupling size will be selected by the engineer of record.
Figure 7.6 Example of a Bypass Jumper
7 Secondary Fluid Circuit
Requirements
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Vertiv™ CoolPhase CDU Installer/User Guide
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