To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.

Venting Issue??

ScottEScottE Posts: 8Member
Trying to set-up Turbo Power (800,000 BTU). I have gas, air and nozzle adjusted to specs. I have -.02 -.06 INWC at the test port (12" from flue outlet) can not get my CO levels close 1500+. attached is a drawing of the venting and related. Venting issue or??
pdf
pdf
20120502_071657.pdf
0B
· ·

Comments

  • icesailoricesailor Posts: 7,265Member ✭✭✭✭
    Venting Issues:

    I don't quite understand your drawings, but in my MA Plumbing and Gas CEU class this year, gas vent piping was heavily discussed. I looked in the workbook and I can't find any 8" pipe that will handle 800,000 BTU's. Perhaps your 1500 PPM CO is because you aren't venting enough?. Like your venting is too small?
    · ·
  • Tim McElwainTim McElwain Posts: 3,200Member ✭✭✭
    If I get you picture

    correctly you are running an 8"single wall flue off your boiler 800,000 BTU's into a 12 inch flue connected to a 22" x 22" masonry (I hope lined inside) chimney roughly 30 feet tall with a lateral run of 20 feet. If that is correct an 8" flue is only 50 square inches and can not handle more than 327,000 BTU's so it is too small. I might suggest by the way using 12 inch all the way as it will handle 932,000 BTU's. An undersized flue will affect your draft which means poor over fire and will cause high Carbon Monoxide for sure.



    The next thing to consider is the chimney at 22" by 22" that is 484 square inches at the low end of 4,500 BTU's per sq in it will only handle 2,178,000 BTU's at 6,500 BTU's on the high end 3,146,00 so either way your total of 3,876,000 is too much for that chimney. If it is not lined that presents even more problems.



    What size is the breech on the boiler? What does the I and O manual call for? Is this being installed under CSD-1 requirements? If so then sizing may change some what based on what your boiler is specified under. You need to check with your local Authority Having Jurisdiction as to local specifications as they vary from say Boston one way New York City another way.
    · ·
  • ScottEScottE Posts: 8Member
    Thank-you

    Thank-you very much...the original installer/consultant are back and resizing so hopefully they will get it resolved and they are starting with 12 inch for the heater



    Scott
    · ·
  • Tim_HodgsonTim_Hodgson Posts: 59Member
    I'm glad

    the installing contractor is taking care of your problem. Most CO problems are caused by lack of air or too low of temperature. Excessive air can create problems too. Take an O2 reading along with the CO and temperature. A draft reading at the breech and over fire is good to have when all is set correctly. Deviations from the proper readings will also let you know when service is needed, Check them once or twice a month.



    Good Luck,

    Tim Hodgson
    · ·
This discussion has been closed.

Welcome

It looks like you're new here. If you want to get involved, click one of these buttons!