220v 185 Degree thermostat

Discussion in 'The Projects Forum' started by Doctor Juice, Feb 3, 2014.

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  1. Doctor Juice

    Thread Starter New Member

    Feb 3, 2014
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    I want to alter a water heater to heat to a higher outlet temp. I want the bottom to remain the same but the top to be able to heat up to at least 185 F when needed. This is obviously not to be used as a regular water heater for just shower purposes. What could i use to remove the upper thermostat and control the upper element only to this degree?. it would be nice if i had a variable control to get the water even hotter/cooler if desired and digital controls would be nice. 220v is what the water heater runs out of now. is there a way to convert to a 110 plug that can upped to 220. I don't think that is possible but if someone knows a way to answer that dumb question, please do. Pretty sure i know the answer... i found a 185 degree temp sensor for a car, but i don't know if that could work with some kind of relay from dc to ac or (and i am hoping there is)if there is an obviously better choice of equipment. this project is going to be great if i can get it to work. Kinda experimental design for something so forgive me if i am vague. I just hope there is a way to do it! Thanks for whatever and please forgive my ignorance to what and where to find components. :) MB

    I am thinking of using an oven control circuit, using the thermostat and capillary tube. Does this sound like a good solution. Was thinking i could use the whole ciruit including the digital controls and just using the connection from the oven element and hooking it up to the water heater element and then creating a water tight way to insert the sensing bulb into the water heaters output line. Let me know what you think.
     
    Last edited: Feb 3, 2014
  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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    Water heaters and the electronic devices controlling them are tightly regulated for serious safety reasons. By stating that you are in need of help understanding how they operate, I find myself doubting the wisdom of helping you modify one. Any such modification could potentially create a deadly hazard for people nearby and/or cause major property damage.

    Please find something less regulated and dangerous to other people if any homebrew upgrade should malfunction.
     
    #12, wayneh and mcgyvr like this.
  3. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    I don't think you should mess with those.

    But for better clarification show us some pictures
     
  4. wayneh

    Expert

    Sep 9, 2010
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    You have a zoned water heater? I've never seen one. Maybe you should disclose the make and model, and the specifications of the unit you have.
     
  5. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    "most" dual element units that I've seen have independent upper and lower element thermostats.. As such you can adjust the upper and lower independently..
    But attempting to modify one outside of its included/approved components is a serious NO-NO..

    NO way should you need 185deg F..If you do you have other problems..
    Most are factory set at 140 and are usually lowered to 120 F for some energy savings..
     
    inwo and Metalmann like this.
  6. inwo

    Well-Known Member

    Nov 7, 2013
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    I agree.

    In theory a simple modification. Could use existing parts even.
    If qualified for the work, wouldn't have to ask.
    In practice there are other fail-safe components that would have to be changed.

    Even the cheap plastic dip tube and drain valve might not be happy.

    Watch myth busters water heater bomb!
     
  7. #12

    Expert

    Nov 30, 2010
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    The upper controller is an SPDT switch. Every part of it would have to be replaced with parts you can bet your life on. Too dangerous for me to contribute.
     
  8. inwo

    Well-Known Member

    Nov 7, 2013
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    Do you think that someone who did not know that, is qualified to make those changes?:)

    Oops again.
    The post I was referring to seems deleted.
    Good thing I didn't quote...... I'll have to remember that trick.
    Sorry!
     
    Last edited: Feb 3, 2014
  9. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    Another Darwin Award project?
     
  10. tcmtech

    Well-Known Member

    Nov 4, 2013
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    Seems to happen a lot to me. :(


    They may delete it but for those who saw it they can't unsee it! :D
     
  11. tcmtech

    Well-Known Member

    Nov 4, 2013
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    Well as a official sponsor of the Darwin awards I do encourage as many as possible to participate! :D
     
    #12 likes this.
  12. #12

    Expert

    Nov 30, 2010
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    The moderators call that, "moderating a post". I think it's easier to understand if they just say, "deleting a post". It generally means they don't like it so they killed it.
     
  13. inwo

    Well-Known Member

    Nov 7, 2013
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    My post then followed yours. Which then made no sense.:eek:
     
  14. MrChips

    Moderator

    Oct 2, 2009
    12,449
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    Perhaps it is time to close this thread for safety reasons.
     
    SgtWookie likes this.
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