Piping

8.0PIPING

All fluid and refrigeration connections to the unit, with the exception of the condensate drain, 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 require- ments.

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, it is recommended 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.

8.1Fluid Connections

NOTICE

This unit requires a water drain connection. It may require an external water supply to operate.

Improper installation, application and service practices can result in water leakage from the unit. Water leakage can cause severe property damage and loss of critical data center equipment.

Do not locate unit directly above any equipment that could sustain water damage. Emerson recommends installing leak detection equipment for unit and supply lines.

8.1.1Condensate Piping—Field-Installed

Do not reduce drain lines

Do not expose drain line to freezing temperatures

Drain line may contain boiling water. Use copper or other suitable material

Drain line must comply with local building codes

Emerson recommends installing under-floor leak detection equipment

Gravity Drain

3/4" NPT drain connection is provided on units without optional factory-installed condensate pump

Pitch drain line toward drain a minimum of 1/8" (3mm) per 1 foot (305mm) of length

Drain is trapped internally. Do not trap external to equipment

Drain line must be sized for 2 gpm (7.6 l/m) flow

NOTICE

The drain line must not be trapped outside the unit or water may back up in the drain pan.

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Liebert DS user manual Fluid Connections, Condensate Piping-Field-Installed, Gravity Drain