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  1. #14
    Join Date
    Jan 2013
    Location
    Henry county,ky
    Posts
    82
    just glad to see its not this.


    I know about the boilers rooms, had a near death co experience myself. Where did you get the co buddy. I would like to get one of those myself. Landlords kill me, they think they are getting a deal because something is cheap. He's lucky no died and took him to court. That's just uncalled for

  2. #15
    Join Date
    Mar 2009
    Location
    Mid-Mo
    Posts
    3,596
    At what ppm do you go to sleep at?

  3. #16
    Join Date
    Aug 2012
    Location
    Antelope,Ca
    Posts
    70
    6400 ppm death in 15 min, 12800 ppm death in 3 min

  4. #17
    Join Date
    Mar 2009
    Posts
    10

    Co

    Quote Originally Posted by gravity View Post
    so.....where is all the CO coming from?
    Lack of combustion air, improper flue collar on a nat draft appliance, and the fact that these units prolly have never been looked at by someone qualified.
    Glad to hear it didn't KO you!

  5. #18
    Join Date
    Feb 2010
    Location
    In a boiler room
    Posts
    7,157
    Quote Originally Posted by ryan1088 View Post
    At what ppm do you go to sleep at?
    At 2,000 ppm a healthy adult would be unconcious at around 15 minutes.

  6. #19
    Join Date
    Jun 2012
    Posts
    529
    Quote Originally Posted by gravity View Post
    I would want to figure out what caused it to soot.

    It is really hard to soot up a NG unit.
    It's not really hard. It doesn't always take long. Like another poster said it snowballs. Once it starts sooting if conditions are not corrected it starts piling up in the HX. Once it starts layering it makes the A/F ratio even worse producing more and more soot until it's noticed/fails.

  7. #20
    Join Date
    Jul 2007
    Location
    Chicago IL
    Posts
    167
    "who cares what was causing it?"

    The OP probably saw enough of the furnace to have confidence of the source and knew it was the right call. I still like knowing if my license is on the line. Swapping put the furnace obviously isn't enough if the issue is a restricted chimney or malfunctioning water heater. Squirrels are good at getting in 3" rounds here. It only takes a few minutes to isolate equipment.

  8. #21
    Join Date
    Apr 2012
    Location
    Louisiana
    Posts
    714
    Quote Originally Posted by fenian View Post
    "who cares what was causing it?"

    The OP probably saw enough of the furnace to have confidence of the source and knew it was the right call. I still like knowing if my license is on the line. Swapping put the furnace obviously isn't enough if the issue is a restricted chimney or malfunctioning water heater. Squirrels are good at getting in 3" rounds here. It only takes a few minutes to isolate equipment.
    My point was the op saw so many things done incorrectly and he decided not to test run the equipment. Even if he pulled and cleaned the burners and determined another cause he still would have other issues that could be contributing. He knew he a hacked job with so much wrong, the time spent fiddleing with it in a confined space would yield little reward. I think the op did the right thing not attempting a band-aid and just starting from scratch.

    Of course a flue inspection would need to be done before start-up, after repairs and replacement.

    I do believe in finding the cause of problems and did not try say it should not be fixed. But when you are staring at multple possible causes that must be fixed anyway "who cares which is the worst?"

  9. #22
    Join Date
    Jul 2007
    Location
    Chicago IL
    Posts
    167
    @sicofthis: no doubt about the furnace. It sounds like it had seen its better days. If the source was the furnace I'd be of the same opinion as you. My assumption is the combustion was spilling prior to the vent. I don't deal with Lennox that often but I would expect there to have been limits up high. Why didn't it trip?

  10. #23
    Join Date
    May 2004
    Location
    Salt Lake City/Tooele
    Posts
    2,535
    QUOTE fenian I don't deal with Lennox that often but I would expect there to have been limits up high. Why didn't it trip?

    Old Lennox equipment like this G12 unit did not have any form of a spill/draft auxiliary limit switch installed, only a fan/limit.


    Quote Sicofthis: Of course a flue inspection would need to be done before start-up, after repairs and replacement.

    Entire flue system was replaced with install.

  11. #24
    Join Date
    May 2004
    Location
    Salt Lake City/Tooele
    Posts
    2,535
    As for worrying about any other additional sources of CO, beyond that of the water heater and furnace. This is a 900 sqft old farmhouse. Probably at one time in the old days was heated by a interior stove of some kind. Back in the fifties someone probably built this cellar just for the purpose of adding a water heater and upgraded heating source. So nothing other than these two NG appliances, that is it. Pretty cut and dry. With the CO concentrated only in this add-on cellar, that pretty much sealed the deal in my mind.

    The flue was originally a 5" B-Vent that pops out roof of the cellar, goes up the back wall of the house, up past the eave line of the home, with a crushed old china cap. Could the cap being crushed cause some restriction....sure. Just all the components of hackery coming together to create the perfect storm.

  12. #25
    Join Date
    May 2004
    Location
    Salt Lake City/Tooele
    Posts
    2,535
    As for the CO analyzer, I use the TIF 8500A. Not as much as a personal thing-of-a-ma-jig that attaches to your belt or body.
    I like the ability for it to literally vocalize the current ppm in my work area. I used one of those personal monitors originally, but I would get so busy and focused on something and I would tend to not pay attention to it. Even though it had an alarm you could set, I just couldn't trust it. Once you have almost been a casualty you become quite paranoid and really take CO seriously. I have wireless earphones I can attach, so in noisy pump rooms, I can be working away with the soothing sound of a man's robotic voice talking in my ear...

  13. #26
    Join Date
    Jun 2012
    Location
    Ontario
    Posts
    5
    Glad your senses kept you alive!

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