Vertiv SmartRow DCX, Installation Manual

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4.4 Vertiv™ SmartRow™ DCX Equipment Placement within the Row
4.4.1 Cooling Unit and Rack Placement
• Server (600mm wide) and Networking (800mm wide) racks are treated equally and generically referred to as
“racks.”
• When determining the location for Liebert® CRVs within the row, they should be evenly spaced within the rack
lineup to maintain uniform airflow distribution, assuming that the heat-load density is fairly uniform across all of
the racks. If there are a couple of racks within the row with a higher concentration of heat, Liebert® CRVs may
be placed closer to that equipment.
• Do not place two Liebert CRV cooling units next to each other.
• UPS placement does not influence the placement of the cooling units due to the relatively low heat and air-flow
demands of the UPS system.
• If the cooling system is designed for N+1 redundancy, be sure that each rack is within the region of influence of
2 or more Liebert CRVs with sufficient capacity. This will ensure that if any cooling unit fails, another unit will be
able to condition the IT equipment.
• Do not place a Liebert CRV at the end of a row next to a UPS because this would put the Liebert CRV too far
from the rack-mounted IT equipment (see
Do not locate Liebert CRV at end of row next to UPS system below).
Figure 4.2 Do not locate Liebert CRV at end of row next to UPS system
4.4.2 UPS System
• Two UPS systems can be located next to each other.
• Three-phase, row-based UPS systems must be placed at the left end of the row (when viewed from the front,
cold side) to ease addition of battery cabinets to the UPS system in the future.
• Battery cabinets can be remotely located, but they will not be conditioned by the row-based cooling system.
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