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Thread: Need advice on my heater/chiller programming

  1. #1
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    Apr 2014
    Location
    Phoenix, MD
    Posts
    116

    Need advice on my heater/chiller programming

    Hoping for some advice here. I have a heater and chiller (recently installed chiller) programmed to run off my Apex. Here are my settings and I am hoping for advice:

    Heater:

    Fallback OFF
    If Temp < 77.0 Then ON
    If Temp > 78.0 Then OFF
    If Temp < 70.0 Then OFF


    Chiller Apex Settings:

    Fallback OFF
    If Temp > 79.0 Then ON
    If Temp < 78.0 Then OFF


    Chiller Pump Apex settings:

    Set OFF
    Fallback OFF
    If Outlet Chiller = ON Then ON
    Defer 05:00 Then OFF

    Physical chiller temp setting: 77

    My questions:

    1. Does the programming for the chiller, heater, and chiller pump look right?

    2. I am trying to ensure the chiller pump turns on, when Apex turns the chiller on. When Apex turns chiller off, Apex will run chiller pump for 5 mins and turn off at that point. My goal is to ensure water flow while chiller turns off

    3. I want to figure out how to turn the chiller pump on, a few times a day, to ensure if the chiller is not running no stagnated water will just sit. Perhaps 10 min bursts a few times a day. Would something like this work:

    Set OFF
    Fallback OFF
    If Outlet Chiller = ON Then ON
    Defer 05:00 Then OFF
    If Time 01:00 to 01:05 Then ON
    If Time 03:00 to 03:05 Then ON
    If time 06:00 to 06:05 Then ON
    If time 09:00 to 09:05 Then ON
    If Time 12:00 to 12:05 Then ON
    If Time 15:00 to 15:05 Then ON
    If Time 18:00 to 18:05 Then ON
    If Time 21:00 to 21:05 Then ON

    A better way to do this?

    I just want to ensure I don't have the chiller/pump off, for days at a time (such as the winter) and have excess water sitting in it so when it turns back on, that flows into tank.

    Thoughts?

    Any help is appreciated.

  2. #2
    Master Control Freak RussM's Avatar
    Join Date
    Dec 2012
    Location
    California - US Pacific
    Posts
    22,463
    Fallback OFF
    OSC 0/1:00/239:00 Then ON
    If Output Chiller = ON Then ON
    Defer 5:00 Then OFF

    it will run for 6 minutes every 4 hours, and whenever the Chiller is on plus for 5 minutes after the Chiller outlet turns off.
    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.

  3. #3
    Frequent Visitor
    Join Date
    Apr 2014
    Location
    Phoenix, MD
    Posts
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    Wow, thanks for the quick reply. I wasn't sure how active this part of the forum was, so really appreciate it. I changed the Chilller Pump to:

    Fallback OFF
    OSC 0/1:00/239:00 Then ON
    If Outlet Chiller = ON Then ON
    Defer 5:00 Then OFF


    That seems to solve the issue with stagnated water in the winter when the chiller isnt' running.

    In your opinion, do my other settings look ok?

    Any concerns with running the chiller via Apex and turning on/off and cycling it?

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