Vertiv Liebert CRV - Condensate-Pump Drain Line Requirements

6.3.5 Condensate-pump 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 (Except for 300-mm (12-in.) Chilled-water models).
This line may contain boiling water. Use copper or other suitable material for the drain line.
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 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.
• Use copper or other material suitable for draining water that can reach temperatures up to
212°F (100°C).
• We recommend installing monitored, under-floor leak-detection equipment.
When your unit includes the factory-installed, optional condensate pump, refer to the additional details
and specific installation instructions depending on the configuration of your unit:
• Condensate-pump Drain Piping for 600-mm (24-in.) Models below
• Bottom Connection for Humidifier Supply andCondensateDrainWateron600-mm
(24-in.)Water/GlycolSystems below
• Condensate-pump Drain Piping for300-mm(12-in.) Models on the facing page
Condensate-pump Drain Piping for 600-mm (24-in.) Models
• 1/2-in. FPT connection is provided on units with top and bottom connections for optional
factory-installed condensate pump.
• Condensate pump is rated for approximately 6GPM at 30 ft (22.7 l/m) at 9m total head.
• Size piping based on available condensate head.
Bottom Connection for Humidifier Supply andCondensateDrainWateron600-mm
(24-in.)Water/GlycolSystems
NOTE: A humidifier is optional: See Humidifier—600-mm (24-in.) Units Only on page81.
Units with a condensate pump and humidifier are preset to be connected from the top. If floor
connections are used, the water lines can be intercepted at the following points shown in Figure 6.9 on
the facing page.
Vertiv | Liebert CRV Installer/User Guide | 60