Vertiv Liebert XD Series, System Design Manual

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1.4 Liebert XDCF—Liebert XD CoolFrame
The Liebert XDCF is a self-contained module designed to cool Egenera’s BladeFrame EX cabinets and
equipment without exhausting heat into the room. Two modules (top and bottom) may be mounted on
the rear of a BladeFrame cabinet. Liebert XDCF modules consist of a sheet-metal frame, coil and filter
dryer. It has no moving parts and needs no electricity.
The module is available with optional, Liebert XD Flex Pipes (flexible metal pipes) with quick-connect
couplings at each end for easy connection to the refrigerant distribution pipes.
Figure 1.4 Liebert XDCF modules on Egenera’s BladeFrame EX cabinets
1.5 Liebert XDH—Horizontal Cooling Module
The Liebert XDH is designed for placement within a row of computer cabinets in the data center in a hot-
aisle-cold-aisle arrangement to maximize the Liebert XDH’s cooling. The Liebert XDH, available in a half-
rack-width module (12" [305mm]), is intended for use with a Liebert XD pumped refrigerant cooling
system, supplied by either a Liebert XDP or Liebert XDC. The module takes in hot air through the rear
from the hot aisle, cools the air by air-to-fluid heat exchangers and discharges the air through the front of
the module into the cold aisle in a diffuse pattern. The cooling air is then drawn into the enclosures to cool
the equipment.
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