Jim Katen Posted November 2, 2017 Report Share Posted November 2, 2017 Any idea why these radon exhaust pipes would have holes in them? Link to comment Share on other sites More sharing options...
Bill Kibbel Posted November 2, 2017 Report Share Posted November 2, 2017 The installer wears Crocs. The holes let all dignity drain out. 2 Link to comment Share on other sites More sharing options...
Jim Katen Posted November 2, 2017 Author Report Share Posted November 2, 2017 Everybody's a comedian. . . Link to comment Share on other sites More sharing options...
Chad Fabry Posted November 2, 2017 Report Share Posted November 2, 2017 plumber bees Link to comment Share on other sites More sharing options...
Erby Posted November 2, 2017 Report Share Posted November 2, 2017 Initially, when I read it, I thought condensate drains but those holes aren't how condensate bypasses are done on radon systems. On the pressure side of the fan, I'd guess air is coming out the holes, not getting sucked in. I think Chad has the best answer! Link to comment Share on other sites More sharing options...
Jim Katen Posted November 3, 2017 Author Report Share Posted November 3, 2017 One of my partners ended up talking with the tech who installed it - it's a condensate drain: https://www.radonpds.com/shop/all-accessories/hydro-sep/ He said that they've stopped using them because they felt that the 2" pipe caused a restriction in airflow and because they figured that condensation isn't going to be the limiting factor in the fan's service life anyway. Link to comment Share on other sites More sharing options...
Bill Kibbel Posted November 3, 2017 Report Share Posted November 3, 2017 Here in radon central, I've never seen it. I've seen plenty of condensate bypass systems though. Link to comment Share on other sites More sharing options...
Erby Posted November 3, 2017 Report Share Posted November 3, 2017 (edited) Around here, if they put it in at all, they use a condensate collector coupling above the fan with a tube from it back into the pipe below the fan. No restriction of air flow. Edited November 3, 2017 by Erby Link to comment Share on other sites More sharing options...
Jim Katen Posted November 3, 2017 Author Report Share Posted November 3, 2017 How does the "special coupling" collect the condensate without creating a narrower interior cross-section? Link to comment Share on other sites More sharing options...
Erby Posted November 6, 2017 Report Share Posted November 6, 2017 It does create a slightly narrower interior cross section with the collector ring. Link to comment Share on other sites More sharing options...
Les Posted November 6, 2017 Report Share Posted November 6, 2017 I learn something every day! And, I do forget a few things. Link to comment Share on other sites More sharing options...
Jim Katen Posted November 6, 2017 Author Report Share Posted November 6, 2017 Looks like it works the same as the one in my picture, only shorter. Also, I can't see the benefit of routing the condensate back into the radon pipe below the fan. Why not let it drip on the ground or plumb it to a rain drain or other place of disposal? Link to comment Share on other sites More sharing options...
Erby Posted November 7, 2017 Report Share Posted November 7, 2017 Beats the hell out of me, Jim. I'm not a radon mitigator, but I see a lot of them around here given Mother Nature's propensity for spitting it out in Central Kentucky. The cold weather times around here have created some ice mounds around the fan when it's not routed back into the pipe to go back into the ground at the base of the pipe. Easiest place to dispose is right back into the pipe below the fan. Link to comment Share on other sites More sharing options...
Tom Raymond Posted November 9, 2017 Report Share Posted November 9, 2017 How is condensate being sucked through a fan differ from condensate dripping through from the other side? The fan is wet either way. Link to comment Share on other sites More sharing options...
Les Posted November 9, 2017 Report Share Posted November 9, 2017 how is the vacuum affected by the bypass? 1 Link to comment Share on other sites More sharing options...
Marc Posted November 9, 2017 Report Share Posted November 9, 2017 4 hours ago, Tom Raymond said: How is condensate being sucked through a fan differ from condensate dripping through from the other side? The fan is wet either way. The fan moves only the vapor. Any liquid condensation that forms goes downwards as per gravity. The bypass tube simply allows the condensation to bypass the fan. I'm guessing. Link to comment Share on other sites More sharing options...
Erby Posted November 10, 2017 Report Share Posted November 10, 2017 I'm guessing you're right Marc. Les: I'm not sure about the bypass affecting the vacuum, but I've seen them pulling a couple of inches of water column with the bypass present, so I'm guessing the affect is minimal. Link to comment Share on other sites More sharing options...
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