Seismic Piping Considerations; Seismic Wiring Considerations - Vertiv Liebert MC series User Manual

10.2 Seismic piping considerations

Condensers for seismic application must be attached to the piping system with field-supplied, flexible
loops designed for seismic movement. Flexible loops must be capable of movement in three dimensions
and must isolate the condenser from the field piping. The loops must be suitable for the operating
pressure and temperature of the system. Follow manufacturer's installation instructions for proper seismic
application of flexible loops. The selection of isolation brand and type must be outlined and approved by
the engineer of record for the project or building.

10.3 Seismic wiring considerations

Condensers for seismic application must be connected to power and control circuits using field-supplied
flexible conduit and conductors to allow movement of the condenser in three dimensions during a seismic
event. The flexible conduit must have at least one bend between the rigid connection at the unit cabinet
and the connection to rigid conduit or foundation.
Figure 10.6 Seismic piping and wiring considerations
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