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  1. #1
    Join Date
    Jul 2011
    Posts
    22

    Confused Need 60,000 Btu High Fire BUT 600 CFM Low Fire!

    Heres the meat - just bought a small ski lodge off a friend which a rusted out furnace (think it was a trane but can't recall for sure). Lodge has a real nice control system - has three fireplaces so place is zoned. Actually seeing how well the system worked last winter is reason zoning my primary residence.

    The problem is that unless I want to revamp the zone control what I need is a two stage furnace which on 1st stage delivers 600 CFM or less and on 2nd stage delivers around 60,000 Btuh. Everyone I've looked at on 1st stage run 700+ CFM.

    Thanks!

  2. #2
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,240
    American Standard/Trane's 95% 2 stage 60,000 BTU on high can be set to run at 600 CFM when on low fire. That's the lowest possible setting, default is 775 CFM. If you went this route, you'd have to be sure you didn't hit the overheat limit if you set it that low.

    May be others, I just have easy access to this data.

  3. #3
    Join Date
    Apr 2010
    Location
    Minnesota
    Posts
    517
    Do you have something against installing a weighted bypass damper?

  4. #4
    Join Date
    Jul 2011
    Posts
    22
    Quote Originally Posted by dunkman View Post
    Do you have something against installing a weighted bypass damper?
    Space limitation. Furnace is installed basically in a closet so would be a butcher job to get one to fit.

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