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Weil-Mclain; I need to be able to adjust low set point in below zero outdoor temps.

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ChillyinMN
ChillyinMN Member Posts: 1
in THE MAIN WALL
I have a Weil-Mclain boiler system. It is not maintaining room heat now that we are below zero F temp.; so, I need to know if I can adjust the low temp. set point up from 160 degrees F to 170 degrees F. The high set point is set to 190 degrees F.

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  • hot_rod
    hot_rod Member Posts: 22,131
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    Is the boiler running non stop on those cold days? If so, changing the low/ off setting, if even possible will not change anything.

    The heat emitters are in charge of the operating condition of the boiler.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • fentonc
    fentonc Member Posts: 237
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    On mine the low point is a fixed offset (20F) below the set high point, so increasing the high limit increases the low limit as well, which should in theory increase the heat output of your radiators by increasing the average temperature.
  • HVACNUT
    HVACNUT Member Posts: 5,833
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    What model boiler and what operating control?
    Pics?

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