Results 1 to 9 of 9
  1. #1
    Jon mackay's Avatar
    Jon mackay Guest

    Default Chimney within a chimney

    I came across this installation today where a metal chimney was covered by one of those fake metal brick looking encloseres. It seemed to me that there could be draft issues but I thought I would check.
    Any information would be appreciated.

    Similar Threads:
    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    OREP Home Inspector E&O Insurance

  2. #2
    Join Date
    Mar 2007
    Location
    Ridgewood, NJ
    Posts
    237

    Default Re: Chimney within a chimney

    Jon,

    The installation was designed that way, so I would doubt that there would be a draft issue.

    I would be moew concerned about clearances with the with metal flue, most likely a b vent. I find that when those were installed years ago, no one seemed to care about proper clearances to framing, etc.


  3. #3
    Jon mackay's Avatar
    Jon mackay Guest

    Default Re: Chimney within a chimney

    OK, thank you Neal.
    You are correct, bad clearance in the attic.

    I noticed a lot of soot coming out of the front of the unit also. I am not real familiar with this type of installation for mobile homes but it just looks a bit scarfey to me..

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images

  4. #4
    Join Date
    May 2007
    Location
    Frankfort, KY
    Posts
    326

    Default Re: Chimney within a chimney

    Did you happen to check the draft on it Jon?

    Measured Performance more than just a buzzword

  5. #5
    Jon mackay's Avatar
    Jon mackay Guest

    Default Re: Chimney within a chimney

    I was unable to check for draft because it was all enclosed. I did not detect any CO in the area while running but due to the warm weather, it did not run for long.


  6. #6
    Join Date
    Mar 2007
    Location
    Near Philly, Pa.
    Posts
    1,633

    Cool Re: Chimney within a chimney

    We need a lot more info. here. You need to identify your system here because that will guide you to your answers.

    The furnace appears to be an oil unit with a gas conversion burner. That flex connector is too long and not approved to penetrate cabinets, btw. Any rating plate or firing data? These oil furnaces used an 1,800F triple walled listed chimney. What I'm seeing here appears to be single walled pipe stuffed in at an angle into a different single walled pipe or possibly B-vent. It also appears they ran 6" into a crimped down 7". You cannot mix B-vent with factory chimney, btw. It also would need elbows and supports for that offset.

    The factory chimney had its own termination plate and this ain't it. This appears to be some bastardized single walled pipe stuffed into a factory chimney housing. This makes the housing a "shroud", which is illegal and most be removed.

    I recommend this entire abortion be replaced with the appropriate chimney or vent. For oil, you would need a UL103 factory chimney or L vent. For gas, only if this unit was approved for it, could you use properly sized and installed B-vent.

    Just curious, where would you have tested for draft and CO and how?

    Keep the fire in the fireplace.

  7. #7
    Jon mackay's Avatar
    Jon mackay Guest

    Default Re: Chimney within a chimney

    Very good information, thank you.

    I have attached the information plate picture along with all other views of the unit.
    Thank you again for your input.

    I checked for CO at the register although there was not much air flow. As far as draft, I was not able to check for that.

    I also could not see any duct work at all so who knows what that looks like.

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images

  8. #8
    Jon mackay's Avatar
    Jon mackay Guest

    Default Re: Chimney within a chimney

    And here is the info plate, I had to downsize the photo a bit.

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images

  9. #9
    Join Date
    Mar 2007
    Location
    Dallas, Texas
    Posts
    4,112

    Default Re: Chimney within a chimney

    Did everyone note it is a mobile home listed furnace? Safety is safety, but there seems to be a very different meaning of "safety" when talking about tornado bait, er, I mean mobile homes and the associated codes.

    Jim Luttrall
    www.MrInspector.net
    Dallas, Texas

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •