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Thread: ATO programming to prevent fill up during certain time?

  1. #1
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    ATO programming to prevent fill up during certain time?

    Below is my current code for my ATO.

    I'd like to add a couple statements that will add the following functionality

    1. I'd like the ATO to be off during a certain time period regardless of whether it should be filling , but should then turn on once the time period has passed. ( I have well water with a terminox ISM unit that backwashes between 2 am and 3 am every night and I don't want to pull water through the rodi during this time for the ATO)

    2. Set a maximum run time for the ATO to be on (to help protect against over filling)

    Below is my current code for my ATO, what would the correct changes be to get the above functionality added ? Thanks for the help it's greatly appreciated


    Fallback OFF
    If ATOLO CLOSED Then ON
    If ATOHI OPEN Then OFF
    If ATOEM OPEN Then OFF

  2. #2
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    You want something along the lines of this. Adjust the when time to your desired max run time.

    Fallback OFF
    If ATOLO CLOSED Then ON
    If ATOHI OPEN Then OFF
    If ATOEM OPEN Then OFF
    If Time 02:00 to 02:59 Then OFF
    Defer 000:10 Then ON
    Defer 000:10 Then OFF
    Min Time 060:00 Then OFF
    When On > 005:00 Then OFF

    You might be an engineer if...You have no life and can prove it mathematically.

  3. #3
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    thank you very much for the help...

    i'm trying to fully understand the lines you added...

    If Time 02:00 to 02:59 Then OFF (so this line is what will tell the outlet to turn off if it's within the time range)
    Defer 000:10 Then ON ( wait 10seconds then turn on; i'm confused by the purpose of this)
    Defer 000:10 Then OFF ( wait 10 seconds then turn off; also confused on this one)
    Min Time 060:00 Then OFF ( once ATOLO is CLOSED, run keep outlet on for a minimum of 60 minutes?)
    When On > 005:00 Then OFF ( when the outlet is in the on state and is on for greater then 5 minutes turn the outlet off); lost on how this should function)


    Thanks again for your help it's greatly appreciated

  4. #4
    Frequent Contributor zombie's Avatar
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    This is what everything does.

    If Time 02:00 to 02:59 Then OFF
    //turn off during timeframe requested earlier.
    Defer 000:10 Then ON
    (Wait 10 seconds with above ON to turn on. Used for switch debouncing so waves or quick noise spikes won't be registered)
    Defer 000:10 Then OFF
    (Wait 10 seconds with above OFF to turn OFF. Used for switch debouncing so waves or quick noise spikes won't be registered)
    Min Time 060:00 Then OFF
    (ATO must wait at least 1 hour since it last turned off to try again. Used to prevent short cycling)
    When On > 005:00 Then OFF
    (If pump runs for 5 minutes, set outlet to manual OFF. Will stay off until you manually reset to AUTO).

    You might be an engineer if...You have no life and can prove it mathematically.

  5. #5
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    Thank you very much for taking the time to explain it all!

    it's greatly appreciated and exactly what i was looking for

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