Figure 5.1 Correct and Incorrect gravity drains for downflow and upflow units
Item Description
1 For downflow units
2 For upflow units
3 Correct drain installation
4 Incorrect drain installation
5 Internal drain
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 over top of other objects.
10 Internal drain
11 DSE unit
Table 5.3 Gravity-fed Drain Line Figure Descriptions
5 Piping and Refrigerant Requirements 33
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