Figure 5.1 Correct and Incorrect gravity drains for downflow and upflow units
Item Description
1 For downflow units with discharge into a raised floor
2 For upflow and for downflow units with discharge to the front or side
3 Correct drain installation
4 Incorrect drain installation
5
Internal drain and trap
NOTE: Units equipped with a condensate pump do not have an internal trap.
6 External drain
7 Continuous downward slope
8 External trap. Do not trap externally.
9 External traps, although unintentional. Lines must be rigid enough not to bow.
10 Internal drain and trap location. Drain and trap not shown in this view.
Table 5.3 Gravity-fed Drain Line Figure Descriptions
Vertiv | Liebert® PDX™ and PCW™ Installer/User Guide | 32
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