Figure 4.3 Duct Connection Example
4.3 Connecting the Condensate-drain Piping
NOTICE
Risk of clogged or leaking drain lines. Can cause equipment and building damage. This unit
requires a water drain connection. Drain lines must be inspected at start-up and periodically,
and maintenance must be performed to ensure that drain water runs freely through the drain
system and that lines are clear and free of obstructions and in good condition with no visible
sign of damage or leaks. Improper installation, application and service practices can result in
water leakage from the unit. Water leakage can result in catastrophic and expensive building
and equipment damage and loss of critical equipment. Do not locate unit directly above any
equipment that could sustain water damage. We recommend installing a monitored fluid-
detection system to immediately discover and report condensate drain-line leaks.
The VRC includes a 1/2-in. Male NPT connector for the condensate drain. Observe the following
requirements when installing and routing the drain line:
• The drain line must be sized for 1 gpm (3.8 l/m) flow.
• The drain line must comply with all applicable codes.
• The drain line must be located so it will not be exposed to freezing temperatures.
• Do not externally-trap the drain line. The unit already has an internal trap on the condensate
drain line.
• The drain line must slope continuously downwards away from the unit.
• If the drain connection is below the gravity-fed drain line, an optional condensate-drain pump
kit is required, and the pump inlet must be below the unit's condensate-drain outlet when
installed. Contact your Vertiv™ representative for additional information.
Figure 4.4 on the facing page, shows the drain-line connection on the unit.
Vertiv™ | VRC Installer/User Guide
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