Vertiv Liebert DA265 - Drain Fluid Piping; Field Installed, Gravity Fed Drain Line Requirements

6.1 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.
6.1.1 Field Installed, Gravity Fed Drain Line Requirements
NOTICE
Risk of water backing up in the drain line. Leaking and overflowing water can cause equipment and building
damage.
Do not install an external trap in the drain line. This line already has a factory installed trap inside the cabinet.
Installation of a second trap will prevent drain water flow and will cause the water to overflow the drain pan.
Sagging condensate drain lines may inadvertently create an external trap.
Observe the following requirements when installing and routing the drain line:
• The drain line must be sized for 2 gpm (7.6 l/m) flow.
• The drain line must be located so it will not be exposed to freezing temperatures.
• The drain should be the full size of the drain connection.
• The drain line must slope continuously away from the unit. Pitch drain line toward drain a minimum of 1/8in.
(3mm) per 1ft (305mm) of length.
• Drain is trapped internally. Do not externally trap the drain line.
• The drain line must be rigid enough that it does not sag between supports, which unintentionally creates traps.
• The drain line must comply with all applicable codes.
• We recommend installing monitored, under floor leak detection equipment.
Vertiv | Liebert® DSE Thermal Management System Installer/User Guide
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