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domestic hot water too hot

Homeowner here with a Buderus Logimax GB 142-45 unit with a Buderus S-120 hot water tank connected. System has "outside" control so regulates itself depending on outside temperature.

Heating set on auto, hot water set on 120. However when weather gets cold domestic hot water temperature over rides setting and becomes very hot.

What to do/ check?


  • ZmanZman Posts: 4,993Member

    That shouldn't happen. That boiler should be piped for domestic priority.

    You should probably repost this in a section other than strictly steam. Pictures of the piping at the boiler would be helpful.

    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • tallentstallents Posts: 10Member
    domestic hot water too hot

    Thanks, new to system and didn't realize it was area specific
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