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How would you control?

Dave_4
Dave_4 Member Posts: 1,405
in THE MAIN WALL
The Taco RMB-1 is a good idea, but would there be a tstat for the rads with their TRVs, set high?

And what would the outdoor reset function of the RMB be doing for the upstairs and all its radiators?

Comments

  • Dave_4
    Dave_4 Member Posts: 1,405
    How would you control?

    Mod-con boiler, basement rooms heated with PEX runs in slab floor, main floor above heated with panel radiators. Radiators equipped with TRVs.

    Please recommend a good way to set up the controls.

  • Brad White
    Brad White Member Posts: 2,399
    Control

    the boiler to the higher temperature water required (presumably panel radiators) and provide a 3-way valve to mix-down for the radiant floor (presumably the lower temperature).

    DHW priority as needed.
    "If you do not know the answer, say, "I do not know the answer", and you will be correct!"



    -Ernie White, my Dad
  • Big Ed_3
    Big Ed_3 Member Posts: 170
    Constant

    Well I would use a pump station with a pressure bypass if all the TRV shut down and a second pump for the radiant . I would use a floor sensor and add a boiler by pass just in case.
    Which boiler ?
  • Uni R_3
    Uni R_3 Member Posts: 299
    Taco RMB

    Seems to me that the simplest way to do 2 temperatures really well without breaking the bank would be to set the MCB to handle the panels and then buy a Taco Radiant Mixing Block to handle the lower temperature slab circuit. You'd have dedicated ODR curves for both temperature circuits and constant circ for your in-floor.

    http://www.taco-hvac.com/en/products/Radiant+Mixing+Block®+RMB-1/products.html?current_category=120

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