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Green Building Bible, Fourth Edition
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Heating and cooling: Heating Controls - large family home

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    Hi all,

    I’m looking for heating control options to put my UFH and Rads on the same central control system.
    I have 8 UFH zones (ground floor) with 12 actuators plus 5 Rad zones with 7 rads (first floor).
    Shortly be adding heating to the basement, probably rads but UFH not ruled out yet.

    I’ve seen Evohome and Max! and a few others but prices vary wildly, as do user experiences.
    What are people here using?
    Any real world experience (good or bad) to share?

    N.B. Have seen the recent discussion on heating controls by Lineweight but as my project is unite different, I thought I’d start a fresh thread.

    Thanks, Karl
  2.  
    If you've oversized the rads can't you just run the UFH on full and just set the rads on TRV's?

    Run all on at the same time and just adjust flow temperature 30-45c depending on the month...
    • CommentAuthortony
    • CommentTimeFeb 7th 2019
     
    Loxone
  4.  
    <blockquote><cite>Posted By: Victorianeco</cite>If you've oversized the rads can't you just run the UFH on full and just set the rads on TRV's?

    Run all on at the same time and just adjust flow temperature 30-45c depending on the month...</blockquote>

    Sorry for the late reply!

    Yes, I have oversized the rads as I had intended to run at the same temperature but have found that whilst 30-35c flow temp to the UFH works well, the response time is not great with the rads.
    40c flow temp to the rads seems optimal.
    Perhaps I didn’t go large enough with the rads.

    The issue now is that, some of the UFH rooms are overheating, even with 30c flow temp.
    Rooms with rads have TRV’s but I have no zone control on the UFH, it is balanced manually but with solar gain in some rooms, north facing walls in others, I feel I need some level of zone control.
  5.  
    <blockquote><cite>Posted By: tony</cite>Loxone</blockquote>

    Thank you, I will check that out :)

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