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Question about Boiler water temp

Big Ed_4
Big Ed_4 Member Posts: 2,703
more comfort and more savings. The system temp should be raised as the outdoor temperature drops. Did you also buy the outdoor reset control ? It will adjust the temperature on auto. I would recommend it ....
I have enough experience to know , that I dont know it all


  • jawman_2
    jawman_2 Member Posts: 4
    boiler hot water question

    I have have a new boiler installed about 2 months ago, and everythigns seems to be ok, other then it takes alot longer for the house to warm up, vs. my old boiler. Im curious as if the boiler is not getting hot enough, and therefore not moving the hot water to my baseboard before loosing temp. Before my new boiler, my baseboard would be almost hot to the touch, now its like warm. Its a Viessamann Vr-27 105K boiler. The temp gauage doesnt seem to go over 150. I have 3 zones, 2 heat, 1 hot water tank. i also have a taco odr setup on it.
    Ive called my installer, and he says things are right.
    any thoughts out there for me ??
  • Timco
    Timco Member Posts: 3,040

    BB typically needs 180* water to do the job. Do you have outdoor reset? It may need to be programed to know you have BB and not CI rads.

    Just a guy running some pipes.
  • Brad White_203
    Brad White_203 Member Posts: 506
    But that depends too

    on how the BB was sized. Yes, 180F is conventional but it can be run, especially on outdoor reset as Tim says, down to the 90's in mild weather.

    Take a house originally designed for 180F entering water for the original uninsulated, single-glazed, loose-sheathing condition.

    Once that house is insulated, air-sealed, maybe re-sided with Tyvek, new low-E windows installed, foamed rim-joists, etc. it can often with ease heat the structure starting at 140F entering water... at the high end. Add outdoor reset and it goes down from there.
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