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TT Smart 60 drywell replacement

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Brad_Q
Brad_Q Member Posts: 3
in THE MAIN WALL

Drywell has failed. Not a flood, just enough water to make the temp sensor fail. I have an IBC boiler, so I am using an electronic temp sensor, not the original TT aquastat.

Here is the problem: I only have about 40" of clearance above the drywell, but the smart 60 drywell is 47". Is it worth trying to unscrew the drywell, reseal the threads, and reinstall? As if I replace it, I will need to completely disconnect and move the tank to gain needed clearance.

Second related question: Will a temp sensor work even if the drywell is wet? The new one I just got appears to have a pretty thick silicon seal where the wires come out of the top of it. The one that failed, the seal looked flimsier.

Thanks!

Comments

  • pecmsg
    pecmsg Member Posts: 7,149

    drywell?

    Do you mean thermowell?

  • mattmia2
    mattmia2 Member Posts: 17,061

    where is the well leaking? is it at the threads or is there a crack or porosity in the well itself? if it is leaking at the threads you should be able to reseal it with some teflon tape and dope or ball wicking or teflon cord or various potions if the threads aren't good quality

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 12,386

    When you hit the ceiling at 40" above the tank, what is it made of? Is it drywall that connects to a space between the ceiling above ans the floor of the next level above the water heater? Is it the under side of that stair case that the bottom of the stair tread is visible? Is it the sub floor of the room above? Depending on what it is made of and what is on the other side there is this invention that I have from the early 1500s that I got from my great great great grandfather. this one is not as old as the original invention but a more modern style from 1700s.

    image.png

    There are even more sophisticated devices that use an electric motor to do the turning. I wonder if one of these might help to get that stick out of that tank?

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

  • HVACNUT
    HVACNUT Member Posts: 7,495

    One more reason I don't like those tanks. I know I've done it, but its probably been 25 years and I can't remember what I had for breakfast this morning. Weil McLain used re-badged TT tanks for years and their Series 2 shows a dry well repair kit (item 6). Maybe that could help?

    Screenshot_20260509_162451_Drive.jpg
  • psb75
    psb75 Member Posts: 1,146

    Thanks HVACNUT, (NOW I know what he is talking about i.e. "drywell"). And for that ref. to replacement parts! Those TT tanks are good—a "tank in tank". Hard to drain. And that temp sensor has been problematic. NOTE: IF you do drain and refill the inner tank you have to do things in the right order, or you "can" collapse the inner tank.

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