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Chimney top Icing

Cobra156 Member Posts: 3
The chimney is a 35' SS lined semi exposed brick. The boiler is a Buderus G215 oil with the baffles removed, stack 585F. The flue pipe runs horizontal for 10' from the boiler to the chimney. The top of the chimney has a slate topper. The ice forms at the top. Any ideas how to prevent this?


  • Jamie Hall
    Jamie Hall Member Posts: 18,966
    Move to Florida...

    more seriously, so long as the icing does not completely close the vent (which is quite unlikely) it isn't a problem.  It is a phenomenon which is almost inevitable in very cold weather -- even without a long semi-exposed chimney.

    I am no combustion man -- just a building super -- but I kind of wonder what has happened to the efficiency of your boiler with the baffles removed, and the combustion numbers...
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • icesailor
    icesailor Member Posts: 7,265

    Is there a legitimate reason the baffles were removed?
  • Henry
    Henry Member Posts: 995

    why tamper with the boiler? The certified instruction manual did not allow to remove the baffles and it also specified how to vent it!
This discussion has been closed.