Vertiv Liebert DSE, System Design And User Manual

Page: 37 / 120

8 PIPING AND REFRIGERANT REQUIREMENTS
All fluid and refrigeration connections to the unit are sweat copper. Factory-installed piping brackets
must not be removed. Field-installed piping must be installed in accordance with local codes and must be
properly assembled, supported, isolated and insulated. Avoid piping runs through noise-sensitive areas,
such as office walls and conference rooms.
Refer to specific text and detailed diagrams in this manual for other unit-specific piping requirements.
All piping below the elevated floor must be located so that it offers the least resistance to air flow. Careful
planning of the piping layout under the raised floor is required to prevent the air flow from being blocked.
When installing piping on the subfloor, we recommend that the pipes be mounted in a horizontal plane
rather than stacked one above the other. Whenever possible, the pipes should be run parallel to the air
flow.
The following pipe connections are required:
• A drain line from the unit.
• A drain line from the secondary drain pan (if applicable).
• Refrigerant piping connections between the evaporator unit and the MCV440 heat-rejection
skid. See Refrigerant Piping and Charging on page 39.
The pipe connection locations, piping general arrangement and schematics are described in the
submittal documents included in the Submittal Drawings on page 67.
The following tables list the relevant documents by number and title.
Document Number Title
DPN004476 Piping Schematic, DA250
Table 8.1 Piping General-arrangment Drawings
Document Number Title
DPN004208 Connection Locations, DA250
Table 8.2 Piping Connection Drawings
8.1 Drain Fluid Piping
NOTICE
Risk of water leakage. Can cause severe property damage and loss of critical data center
equipment.
The Liebert® DSE requires a water drain connection. Improper installation, application and
service practices can result in water leakage from the unit.
Do not locate the unit directly above any equipment that could sustain water damage.
We recommend installing monitored leak detection equipment for the water supply lines and
the internal unit water lines.
8 Piping and Refrigerant Requirements 37