3 PRE-INSTALLATION PREPARATIONANDGUIDELINES
NOTE: Before installing unit, determine whether any building alterations are required to run piping,
wiring and duct work. Follow all unit dimensional drawings and refer to the submittal engineering
dimensional drawings of individual units for proper clearances.
Refer to Model-number Nomenclature on page13 and the appropriate submittal drawings, to determine
the type of system being installed and anticipate building alterations, piping and duct work needed.
The unit dimensions, pipe-connection locations, and piping schematics are described in the submittal
documents included in the Submittal Drawings on page156.
• Verify that the floor is level, solid and sufficient to support the unit. See Table 3.2 below. for
unit weights.
• Confirm that the room is properly insulated and has a sealed vapor barrier.
• For proper humidity control, keep outside or fresh air to an absolute minimum (less than 5% of
total air circulated in the room).
• Do not install a Liebert CRV in an alcove or at the end of a long, narrow room.
• Install the units as close as possible to the largest heat load.
• Allow at least the minimum recommended clearances for maintenance and service. See the
appropriate submittal drawings for dimensions.
• We recommend installing an under-floor water detection system. Contact your Vertiv™
representative for information.
3.1 Planning Dimensions
The unit, floor stand, and plenum dimensions are described in the submittal documents included in the
Submittal Drawings on page156.
The following table lists the relevant documents by number and title.
DOCUMENT NUMBER TITLE
DPN001791 Cabinet and Floor Planning Dimensional Data, 600 mm (24 in.)
DPN002807 Cabinet and Floor Planning Dimensional Data, 300 mm (12 in.)
Table 3.1 Dimension Planning Drawings
3.2 Unit Weights
MODEL NO. UNIT WIDTH
WEIGHT ± 5%, LB (KG)
AIR-COOLED WATER/GLYCOL-COOLED CHILLED WATER
CR019
300 mm (12 in.)
507 (230) 545 (247) —
CR032 — — 418 (190)
CR020
600 mm (24 in.)
739 (335) 772 (350) —
CR035 805 (365) 849 (385) —
CR040 — — 728 (330)
Table 3.2 Weights without packaging
Vertiv | Liebert CRV Installer/User Guide | 17
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