You know - thinking about it - that secondary drain could simply dump in the engine room bilge and be done with the risk. If it is ever needed who cares where it dumps as long as not the carpet......Tom,
The only problem with this (at least on my boat) is Sea Ray “T’d the condensate drain and the overflow drain right under the AC unit in the bilge and then the line runs another 20’ at least to get the sump.... So if the line clogs along that 20’ length, the overflow is useless and as Carter mentioned, the depressed area fills with water and gets the carpet wet as I have experienced.... Best solution is to separate the 2 lines and let the overflow drain into the bilge at an area you can monitor.....