Vertiv Liebert CRV - Page 68

Figure 6.14 Correct and Incorrect gravity-drain piping
onall600-mm24-in.)andwater/glycol-cooled300-mm(12-in.)models
ITEM DESCRIPTION
1 Correct drain installation
2 Incorrect drain installation
3 Internal drain
4 External drain
5 Continuous downward slope
6 External trap
7
Unintentional traps from bowing of line.
Lines must be rigid enough not to bow, creating a trap.
Connecting Gravity-drain Line on All600-mm(24-in.) models
andonAir-andWater/Glycol-cooled, 300 mm (12 in.)models
1. Remove the factory-supplied adapter and bushing that are tied to the condensate line inside
the unit.
2. Remove the knockout in the plate inside the bottom of the unit, and insert the bushing into the
knockout.
3. Run the evaporator drain line through the bushing in the bottom of the unit.
4. Connect field-installed drain line to the discharge hose.
5. Using field-supplied clamps, clamp all connections as needed.
Vertiv | Liebert CRV Installer/User Guide | 68