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  1. Nofossil Minister of Fire

    joined: Oct 4, 2007
    3,279 posts
    Addison County, Vermont
    I'm not sure about the 40, but I think the 60 and 80 have two nozzles. I know some people have experimented with blocking off one of them to get a more useful heat output level.
    #26

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  2. Fred61 Minister of Fire

    joined: Nov 26, 2008
    1,143 posts
    Southeastern Vt.
    True! Forty has one nozzle.
  3. JP11 Minister of Fire

    joined: May 15, 2011
    812 posts
    Central Maine
    Ditto. The whole idea of these things to get the heat into the water. Anything that inhibits that is robbing efficiency. I do mine every 3 to 4 weeks... after I notice about a 50 degree rise in my average flue temps.

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