CellarPro 4200VSX WINE COOLING UNIT (EXTERIOR), 1080 - Manual (Page 15)

15
As shown above, the drain line should drop, then rise (but stay below the
height of the fitting), and then drop again into a drain or bucket. Then, fill the
trap with water. The condensate trap will allow any excess moisture inside
the cooling unit to overcome the static pressure and flow out of the drain line.