Vertiv Liebert XDU 060, Installer/User Manual

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Item Description
1 System low pressure tap
2 System high pressure tap
3 Bottom supply connection to heat load
4 Bottom return connection from heat load
5 System fluid fill connection
6.5.1 Fluid Fill Source
The fluid fill source for the system may be from a municipal utility source or pumped in manually or by use of a transfer
pump from a portable fluid receptacle and provide 10-12 psig.
Guidelines:
• Pump should be capable of 15 psi (30 feet H2O) max head.
• Elevate the fluid receptacle above the pump to provide net positive suction head (NPSH) required by pump.
• Prime the pump and hoses to avoid pump damage and minimize the introduction of air to the system.
• Place free end of the bleed hose into the fluid receptacle to minimize loss of treated fluid.
• Follow transfer pump manufacturer’s instructions for duty cycle, net positive suction head, and priming
requirements.
Figure 6.4 Transfer Pump Fill General Arrangement
6 Piping Requirements
31