May 16, 2014 · When you buy a unit to install, the installation manual tells you step by step on how they want the condensate line run, Float switches are required by code for systems that have the potential …

Apr 21, 2013 · The options are basically a pan with conspicuous discharge, a drain from the aux. drain in the coil, a pan with a float switch and drain, or a wet switch in the aux. drain port.

Nov 2, 2012 · BUT, they TIED IN the furnace condensate drain directly into the AC drain, with the common pipe running to a condensate pump (see picture below). The Lennox Installation manual …

Oct 22, 2008 · my Carrier central ac is about 4 yrs old. the main drain comes off the coil into a trap and to the floor hole. the secondary or overflow drain threaded hole is plugged with a red plastic plug. …

Oct 6, 2012 · The owner/dealer (who only sells Lennox) who came to give a quote on the installation said he would combine the AC condensate drain with the furnace condensate drain, and run them …

Jun 30, 2014 · I used to have a chart that showed proper condensate termination line sizes for instances where 2 or more condensate drain lines are connected. I see minimums for a condensate drain size …

Dec 16, 2018 · The drain line outlet outside above my window is supposed to be the secondary (emergency), but its clear the AC installers had hooked it up to be the primary line.

Apr 8, 2016 · I just got a contract to install a ceiling cassette style ductless unit. I noticed in the literature that the unit uses a pump to take out the condensate water. I'm installing this unit in the attic and I …

Jul 28, 2025 · I am trying to figure out why the AC safety float switch keeps filling with water and then shutting off the AC, despite being told the AC drain line NOT being clogged anymore. This started …

Sep 27, 2010 · The condensate line comes out of the main trunk and runs to the floor just above the drain near the furnace. No p-trap. This is the way it was installed when the house was built (2003). Is …