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Old 04-09-19, 12:55 PM   #211
Daox
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I am currently testing the new controller. I'm not sure how its working out so far. The fan has only kicked on twice. The first time it worked nearly perfectly. It kicked on at 80F attic temp, and off around 74F. However, the second time it kicked on at 76F, and off at some unknown temperature above 73F. I need some more cycles to make sure, but it seems to be a bit on the inconsistent side.

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Old 04-09-19, 10:32 PM   #212
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Your thermostat looks like the type I had in the greenhouse in the past. They're super reliable, but not so precise. Mine used to drift around 5 degrees total, depending on it's mood. It outlasted the fan it controlled and the next one that took it's place.

The can fan you're using is awesome! They move a ton of air and are very unimposing. Might be too much for the attic though.
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Old 04-16-19, 08:41 AM   #213
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Thanks. The new fan is really nice. On top of being so much quieter, it really does blow a LOT more air. We have yet to really get a good day for it sun and temperature wise, but we'll see how long it stays going a bit later in the season.

I also ordered a new digital controller. I didn't like the bimetal one. I would like something more accurate to better take advantage of the available heat.
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Old 04-18-19, 10:55 AM   #214
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Here are some pictures of the new digital controller I am using. It has been working very well so far.





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Old 05-15-20, 01:38 PM   #215
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Time for another update. I noticed some real bad sag early in the season. So, I went to feel it and the vent line was actually full of water. I can only imagine this was from condensation. Fast forward to today and I went up in the attic to drain the water out. However, the attic fan has run numerous times since then and the water was already gone. It was a fair amount of water too. In any case, I shortened up the vent line so that there isn't nearly as much sag.

Before:



After:




I also had printed up a fan guard to go on the front to avoid any possibility of putting your hand into the fan. After a year of use it does have some dust build up, but really not that bad at all.





That all being said I am still absolutely loving the new attic fan design. The new setup moves so much more air, and its so much quieter than it was before. I'm very glad I updated the setup.

I also have one more update that is pretty slick and I'll add that when I get a minute.

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