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Thread: dual heater programming and looking for suggestions

  1. #1
    New User
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    Location
    Boston
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    dual heater programming and looking for suggestions

    Hi guys,

    Would like to do some work / improvements on my heater program. First off, currently I'm using the season table, although I have to be honest, I don't really care of the high temperatures it shows for July / August as I think they're a bit too high. I would really prefer things not go above 79. Not sure if this is modifiable though open to suggestions.

    Barring that I'd like to put together a program that runs in the range of 76-79 (depending on the month).

    Currently I run 2 x 500 watt heaters with the following programming:

    Heater1
    Fallback OFF
    Set OFF
    If SumpTem < RT+0.0 Then ON
    If Time 00:00 to 04:00 Then OFF
    If Time 08:00 to 12:00 Then OFF
    If Time 16:00 to 20:00 Then OFF
    If SumpTem < RT+-0.1 Then ON
    Defer 007:00 Then ON
    If Outlet HIgh_Heat = ON Then ON
    If SumpTem < 70.0 Then OFF
    If FeedD 010 Then OFF

    Heater2
    Fallback OFF
    Set OFF
    If SumpTem < RT+0.0 Then ON
    If Time 04:00 to 08:00 Then OFF
    If Time 12:00 to 16:00 Then OFF
    If Time 20:00 to 00:00 Then OFF
    If SumpTem < RT+-0.1 Then ON
    Defer 007:00 Then ON
    If Outlet HIgh_Heat = ON Then ON
    If SumpTem < 70.0 Then OFF
    If FeedD 010 Then OFF

    HIgh_Heat
    Set OFF
    If Outlet Heater1 = ON Then ON
    If Outlet Heater2 = ON Then ON
    Defer 015:00 Then ON
    If SumpTem > RT+0.1 Then OFF


    I just want things to be as efficient and stable as possible. Suggestions welcome!

    Thanks,
    Steve

  2. #2
    Frequent Visitor
    Join Date
    May 2016
    Location
    Lansdale, PA
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    589
    You can modify the season table, I think you have to do it with the dashboard or the hard wired controller, so you can lower the temperature in July/August.

  3. #3
    New User
    Join Date
    Feb 2014
    Location
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    Thanks, I actually didn't realize that. I made some adjustments to mine to tighten it up a bit (see below)...my temp tends to be in the 76.5-77.5 range in the summer sometimes a bit higher sometimes a bit lower, so I figure this will cover me pretty well..(always welcome suggestions or critiques though). The majority of my water volume (sump, fuge, frag tank) are in the basement with just my 70 display on the upper floor which helps keep it a bit cooler.
    Screen Shot 2016-06-18 at 11.00.08 PM.jpg

  4. #4
    Regular Vistor
    Join Date
    Dec 2016
    Location
    California
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    I'm very new at this but I think I'm following what you are doing but I also have a few questions.

    First, I believe that SumpTem is your temperature probe, but what is RT?

    Second, I get a little lost in what the second half of your code does. From Defer on.

    Lastly, I've never heard of the season table. Is there a thread that you can refer me to where I can read up on it some?

  5. #5
    Master Control Freak RussM's Avatar
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    Dec 2012
    Location
    California - US Pacific
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    22,463
    Quote Originally Posted by Flagg37 View Post
    I

    First, I believe that SumpTem is your temperature probe, but what is RT?

    Lastly, I've never heard of the season table. Is there a thread that you can refer me to where I can read up on it some?
    For both of these, see the Seasonal Features topic in chapter 6 of the Comprehensive Reference Manual https://www.neptunesystems.com/support/docs/
    Please do not send me PMs with technical questions or requesting assistance - use the forums for Apex help. PM me ONLY if the matter is of a private or personal nature. Thanks.

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