Vertiv Liebert CW User Manual

5.1 Drain Fluid Connections
NOTICE
Risk of water leakage. Can cause severe property damage and loss of critical data center
equipment.
The Liebert®CW 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.
The following pipe connections are required:
• A drain line from the unit.
• Supply and return water lines.
5.1.1 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.
Install an external, 5-1/2in. trap in the drain line (if desired). The factory unit does not contain a
trap.
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.
• 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® CW™ Installer/User Guide
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Vertiv Liebert CW Specifications

General

Brand	Vertiv
Model	Liebert CW
Category	Control Unit
Language	English