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baseboard reset schedule

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CC.Rob
CC.Rob Member Posts: 130
in THE MAIN WALL
I will never, repeat never, look forward to cold weather. But at least now there's a new science experiment to do....

Comments

  • 1974bobcat
    1974bobcat Member Posts: 18
    outdoor reset schedule

    I'm setting up a Buderus GB-142 for a baseboard system. The new Am-10 controler is factory set for a radiant system. So I need to move the bottom of the curve up to obtain sufficent heat. Does anyone know where I can find a reset schedule for baseboard heat (slant fin 30)

    THanks BobCat
  • Brad White_9
    Brad White_9 Member Posts: 2,440
    Try this

    The real key is the amount of radiation you have relative to your heat loss. If you have double the radiation you would need at 180 degrees (or whatever proportion), you have to match your design heat loss and water temperature to those factors.

    To double-check, I would figure what your heat loss would be at say, 40 degrees outside and corroborate the radiation and water temperature at that point. This will help establish the low end of the curve, a point where you may want to "flat-line" or set a minimum water temperature or shift. IOW, you may find that in mild weather your space feels too cool unless you keep water above, say, 105 degrees...so that becomes the low limit.

    Experience over time will dictate of course, but this is a place to start.
  • CC.Rob
    CC.Rob Member Posts: 130
    flatline

    I have a house full of slantfin 30 or equivalent. Right now I go flat-line at 115F at an outdoor temp of 49F. The engineering data to which Brad refers agrees well with my heat loss and suggests that I could probably go to about 110F or 105F, but I'm keeping it a bit higher for faster morning recovery from a modest night setback.

    I haven't messed with the top end of the curve much, but I plan to move the top of the curve down once we get some cold weather and I can see where things plot and how it performs. Perhaps use the heat loss as a guide. In theory, I can supply 155-160F water at my ODT.
  • Brad White_9
    Brad White_9 Member Posts: 2,440
    Your approach

    is very sound, Rob. It will be interesting to see how it pans out over a season.
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