1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)

barometric damper?

Post in 'The Boiler Room - Wood Boilers and Furnaces' started by tjvt, Jun 17, 2014.

  1. tjvt

    tjvt New Member

    Joined:
    May 1, 2014
    Messages:
    42
    Loc:
    Barnet, VT

    Helpful Sponsor Ads!





  2. henfruit

    henfruit Minister of Fire

    Joined:
    Nov 27, 2007
    Messages:
    712
    Loc:
    New Hampshire-Maine border
    if you have more draft than the boiler spec calls for, then yes it would be a good choice.
  3. tjvt

    tjvt New Member

    Joined:
    May 1, 2014
    Messages:
    42
    Loc:
    Barnet, VT
    How the heck do I know that? Excuse my ignorance. I assume I need some sort of draft-measuring device?
  4. maple1

    maple1 Minister of Fire

    Joined:
    Sep 15, 2011
    Messages:
    4,163
    Loc:
    Nova Scotia
    Yes.

    A Dwyer Model 25 Mark II is a good one.

    (Not 100% sure I got that 100% right - that's from a poor-at-times memory).
  5. ewdudley

    ewdudley Minister of Fire

    Joined:
    Nov 17, 2009
    Messages:
    1,754
    Loc:
    Cayuga County NY
    At the risk of hijacking the thread a little, do units with closed-loop stack temperature control, e.g., Fröling, require a barometric damper?
  6. velvetfoot

    velvetfoot Minister of Fire

    Joined:
    Dec 5, 2005
    Messages:
    6,850
    Loc:
    Sand Lake, NY
  7. DaveBP

    DaveBP Minister of Fire

    Joined:
    May 25, 2008
    Messages:
    1,068
    Loc:
    SW Maine
    That digital meter has a 40" range. Recommended drafts for boilers are about 1/20". I don't think you could count on the accuracy of the meter to give you a measurement that would mean anything useful.

    Chimney draft meters are pretty sensitive devices. They measure too narrow a range to be useful for much else.
    Owen1508 likes this.
  8. heaterman

    heaterman Minister of Fire

    Joined:
    Oct 16, 2007
    Messages:
    3,097
    Loc:
    Falmouth, Michigan
  9. taxidermist

    taxidermist Minister of Fire

    Joined:
    Mar 11, 2008
    Messages:
    1,032
    Loc:
    Fowlerville MI
    I use this one.

  10. velvetfoot

    velvetfoot Minister of Fire

    Joined:
    Dec 5, 2005
    Messages:
    6,850
    Loc:
    Sand Lake, NY
    It's cheap enough so you can just mount it permanently near the boiler(s). Even 3" is high though; I suppose that's the lowest range of the Dwyers?
  11. maple1

    maple1 Minister of Fire

    Joined:
    Sep 15, 2011
    Messages:
    4,163
    Loc:
    Nova Scotia
    That's the same one I have & was trying to recommend. Mine has been permanently mounted since September 2012. Simple & reliable, and seems to be quite accurate too. Took just a little bit of fiddling, and a little bit of spilled red stuff, to get it zeroed the first time but I haven't touched it since. When burning in the winter I'm pretty steady right at 0.1".
  12. tjvt

    tjvt New Member

    Joined:
    May 1, 2014
    Messages:
    42
    Loc:
    Barnet, VT
    Does the Mark II 25 come with detailed instructions regarding where to mount, where to measure, etc? Do most of you have your dampers below your T like taxidermist? For whatever reason I envisioned installing mine above my T, between my T and the stove pipe.
  13. maple1

    maple1 Minister of Fire

    Joined:
    Sep 15, 2011
    Messages:
    4,163
    Loc:
    Nova Scotia
    My manometer probe is about 6" from the back of my boiler, then my barometric damper is a couple feet downstream of that, followed right away by a cleanout T that sends things up out my chimney - except for a bit of ash that doesn't make it up & out & therefore settles in the bottom of the cleanout.
  14. brenndatomu

    brenndatomu Minister of Fire

    Joined:
    Aug 21, 2013
    Messages:
    571
    Loc:
    NE Ohio
    The draft probe needs to go in between the baro and the stove. Preferably in the middle of a straight run of pipe
  15. taxidermist

    taxidermist Minister of Fire

    Joined:
    Mar 11, 2008
    Messages:
    1,032
    Loc:
    Fowlerville MI
    I only put it there because it was a after thought and i would hav had to buy more high $$$ pipe to make it work. That being said it works great where it is and it stays very clean.
  16. flyingcow

    flyingcow Minister of Fire

    Joined:
    Jun 4, 2008
    Messages:
    2,391
    Loc:
    northern-half of maine
    Did not put one in..works fine

Share This Page