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Oil Boiler Recommendation - maybe with Opentherm or similar

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  • 21-06-2019 12:07am
    #1
    Bungusbeefcake
    Registered Users Posts: 192 ✭✭


    Hi all, I'm looking to buy a new high efficiency Oil boiler and really haven't a clue of models or what not. It would be to heat underfloor heating and radiators upstairs. I expect a large enough one, 50-70kW. I would like to have it quite smart/able to be hooked up smartly with the UFH for zonal control, possibly Opentherm ready or something similar. I would like to program the system or control it via mobiles etc.

    Would you guys have any recommendations, please? I would really appreciate your experience with Zonal control systems for UFH with an Oil boiler too. What system do you use?

    Thanks!
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    #2
    H.E. Pennypacker
    Closed Accounts Posts: 844 ✭✭✭H.E. Pennypacker


    How big is your house? That's a huge boiler, especially given your HLI (from the heat pump thread)

    I've a Grant Vortex 50/90 set to the factory default of 23 kw which is too big for my house since I had insulation works carried out. I'm planning to reduce its output to either 15 or 20 kw (135 sq meter house, HLI 2.13).

    I've got two Nest thermostats to cover three zones (no UFH though). It works very well, learns along the way and produces a basic monthly report (stats are available at any time from the app). Electric Ireland have a discount deal on them but other electricity providers will probably have something similar. My sister has a Heatmiser and it seems to be rubbish.


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    #3
    Bungusbeefcake
    Registered Users Posts: 192 ✭✭Bungusbeefcake


    The house itself is 238m2 for the UFH downstairs and the converted section is approx 70m2 with the rads. So its fairly large, hence I expect to need a large enough boiler.

    I looked into the Nests but they don't work with UFH so can't get those.


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    #4
    H.E. Pennypacker
    Closed Accounts Posts: 844 ✭✭✭H.E. Pennypacker


    Bungusbeefcake wrote: »

    I looked into the Nests but they don't work with UFH so can't get those.


    They should be ok with a wet UFH system:


    https://support.google.com/googlenest/answer/9251766?hl=en-GB


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