NJinspector Posted June 7, 2012 Report Share Posted June 7, 2012 Anybody have any references that state how far the exterior fan has to be from an exhaust vent? This just looks wrong to me. That's the water heater exhaust vent right next to the fan. Click to Enlarge 35.1 KB Link to comment Share on other sites More sharing options...
ericwlewis Posted June 7, 2012 Report Share Posted June 7, 2012 isn't a radon mitigation system sealed from top to bottom? I may be wrong but it doesn't seem like an issue to me. Link to comment Share on other sites More sharing options...
Charlie R Posted June 7, 2012 Report Share Posted June 7, 2012 What issue do you think would be involved with this installation, other than aesthetics? The radon tube is sealed, as is the fan. The fan will not create any air turbulence so it will not interfere with the venting process. The vent can still vent. Link to comment Share on other sites More sharing options...
NJinspector Posted June 7, 2012 Author Report Share Posted June 7, 2012 Won't the exhaust begin to corrode the fan over time if its that close? Link to comment Share on other sites More sharing options...
Tom Raymond Posted June 7, 2012 Report Share Posted June 7, 2012 Won't the water heater be exhausting close to the same amount of radon as the mitigation system? Or possibly more if the NG was fracked from shale? Link to comment Share on other sites More sharing options...
Les Posted June 7, 2012 Report Share Posted June 7, 2012 I am with Jason on this one. I don't think the fan will corrode, because it is never exposed to the combustion gases. The radon system is supposed to be sealed. I do have additional observations and questions; Will condensation form around the radon suction and discharge pipes? Will the configuration (shape) of the radon fan cause a change is the natural air flow around the vent pipe? Is this fan rated for that size pipe? Is the radon fan perfectly balanced and causes no vibration that carries over to the other pipe? etc.. Sometimes common sense trumps all the other nonsense of a specification! Who is going to tell me this is a good installation? Careful, I said a "good" installation. Link to comment Share on other sites More sharing options...
Tom Raymond Posted June 7, 2012 Report Share Posted June 7, 2012 It's a radon mitigation fan, it's really only good for the electric utility. I bet the exhaust pipe was there before the fan, so no. Link to comment Share on other sites More sharing options...
John Dirks Jr Posted June 8, 2012 Report Share Posted June 8, 2012 What issue do you think would be involved with this installation, other than aesthetics? The radon tube is sealed, as is the fan. The fan will not create any air turbulence so it will not interfere with the venting process. The vent can still vent. 1 up Link to comment Share on other sites More sharing options...
Les Posted June 9, 2012 Report Share Posted June 9, 2012 Hey John, usually I get it, but am missing this one! Link to comment Share on other sites More sharing options...
John Dirks Jr Posted June 10, 2012 Report Share Posted June 10, 2012 Hey John, usually I get it, but am missing this one! Maybe you've calmed to the full extent and are now recycling. Condensation should not hurt the mitigation equipment since they are designed to withstand it. The WH is a direct vent so it's pushed out by a fan. As long as there's not an obstruction, it will expel exhaust as it should. Link to comment Share on other sites More sharing options...
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