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Thread: Programming for Storage Bins/ATO

  1. #1
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    Programming for Storage Bins/ATO

    My ATO and 2 water storage bins are fed from my RODI unit and controlled by float switches and solenoid valves. Programming for each of these items is as follows.

    ATO

    Fallback OFF
    Set OFF
    If Output AWC_VO = ON Then OFF
    If SmpFil CLOSED Then ON
    If SmpHI OPEN Then OFF
    When On > 015:00 Then OFF
    If T_Salt < 33.0 Then OFF

    NSW Storage

    Fallback OFF
    If NSW_Lo CLOSED Then ON
    If NSW_HI OPEN Then OFF

    AWC Storage

    Fallback OFF
    If AWC_LO CLOSED Then ON
    If AWC_HI OPEN Then OFF

    The ATO is fed directly from the RODI unit and does not use a pump. Water pressure feeds the sump and is controlled by floats in the sump and turned on and off by solenoid.

    My issue is when refilling either the NSW or AWC storage tanks that if the ATO calls for water the RODI system won't fill it until the storage tank is full. In other words, you can only fill one item at a time. The time to off line of code in the AWC is used to prevent the AWC from overfilling the sump; maybe this is too redundant but I like the safeguard. If I add code that says if AWC is on then off to the Storage tank programming the filling process will be interrupted but won't return to filling after the ATO is complete.

    So I would like to add programming that would allow the storage tanks to stop filling when the AWC asks for water, then resume filling when the ATO is off. Is this possible and if so what is required to make this work?

    Thanks for your help.

  2. #2
    Frequent Contributor zombie's Avatar
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    ATO

    Fallback OFF
    Set OFF
    If Output AWC_VO = ON Then OFF
    If SmpFil CLOSED Then ON
    If SmpHI OPEN Then OFF
    When On > 015:00 Then OFF
    If T_Salt < 33.0 Then OFF

    NSW Storage

    Fallback OFF
    Set OFF
    If Output vNSW = ON Then ON
    If Output ATOname = ON Then OFF

    AWC Storage

    Fallback OFF
    Set OFF
    If Output vAWC = ON Then ON
    If Output ATOname = ON Then OFF

    vNSW
    If NSW_Lo CLOSED Then ON
    If NSW_HI OPEN Then OFF

    vAWC
    If AWC_LO CLOSED Then ON
    If AWC_HI OPEN Then OFF


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  3. #3
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    Thanks Zombie. That's perfect.

  4. #4
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    For my understanding, the VO programming can be suspended to allow the ATO to fill and after the ATO is complete the programming will revert back to the VO's until the storage bins are filled correct?

    Thanks.

  5. #5
    Frequent Contributor zombie's Avatar
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    Quote Originally Posted by crs751 View Post
    For my understanding, the VO programming can be suspended to allow the ATO to fill and after the ATO is complete the programming will revert back to the VO's until the storage bins are filled correct?

    Thanks.
    Basically. The VO stays on just like the original code in the reservoirs, but by separating it from the reservoir code, you allow the ATO state to pause the reservoir code without affecting the VO, which will stay on until the top is reached.

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  6. #6
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    Thank you. Your help is invaluable.


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