Vertiv Liebert XD Series, System Design Manual

Page: 69 / 200

4.6 Optional Features—Liebert XDH
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Smart Module
—Smart modules will allow remote shutdown, fan failure alarms and automatically
switching the second fan bank On and Off. The controls save energy by permitting the module
to turn one fan in each fan bank Off based on the supply and return temperature. Liebert XD
smart modules are able to provide alarm conditions such as fan failure or condensate detection
at the Liebert XDP display via CANbus communication. For electrical connection details, refer
to the Liebert XDH user manual, SL-17210, available on the Vertiv web site: www.VertivCo.com
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Refrigerant Precharge
—The Liebert XDH can be precharged with refrigerant. The module will
have one-shot fittings and will be pressurized. The one-shot Liebert XD Flex Piping will also be
precharged with refrigerant.
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Field-Installed Flexible Piping
(for use with prefabricated piping assemblies)—Field-installed
flexible piping kits are available in lengths of 4, 6, 8 and 10 feet (1.2, 1.8, 2.4 and 3 meters).
Connection style to the module end may be straight or 90 degrees with one-shot style
couplings or removable couplings. Flex pipes with one-shot connections will have pressurized
R134a. Flex pipes with removable connections will have a low pressure nitrogen charge
Connection to the prefabricated piping assembly is with a threaded coupler. For information on
acquiring the correct kit for your installation, refer to DPN000780, available by calling 1-800-
LIEBERT and from your local Vertiv representative.
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Tie-Down Bracket
—An optional tie-down bracket may be installed on the Liebert XDH to
secure it in the row. The bracket keeps space between the Liebert XDH and adjacent
equipment constant, preventing vibration.
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