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Electric boiler

Zman
Zman Member Posts: 7,611
in THE MAIN WALL
Is there any downside to controlling a large electric boiler with outdoor reset?

I am working on an "always on" commercial system that has a tendency to overshoot.

Can you damage an electric boiler by turning down?

Thanks,

Carl
"If you can't explain it simply, you don't understand it well enough"
Albert Einstein

Comments

  • SWEI
    SWEI Member Posts: 7,356
    how are you turning down?

    Most large electric boilers I've seen have multiple elements and some kind of switching.  The newer ones have TRIAC controls, which can be retrofitted to almost anything.
  • Zman
    Zman Member Posts: 7,611
    Control

    Swei,

    I have seen a graph of the boiler's energy use. It appears to be a multistage setup with multiple elements. I will open it up and figure out what controls the beast on my next visit.

    Carl
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • SWEI
    SWEI Member Posts: 7,356
    Assuming it has a control input

    an off-the-shelf ORC (possibly with some kind of adapter if it's an older interface) should get you there pretty easily.



    If not, I'd replace either the low voltage side or everything in front of the elements depending on what was in there.



    http://www.viconics.com/electric_heat.php

    http://indeeco.thomasnet.com/category/all-categories-indeeco-controls-controls
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