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High co

Hardship
Hardship Member Posts: 5
Hi all, just a question on high co in a burner i was working on at the weekend. I serviced a boiler "a warmflow 50-70" with a Riello rdb 2.2 burner and on completion of the service i performed a test with the analyzer and i had to take it out of the flue because of a high co reading. I checked that every thing was right with the service manual ie. nozzle, oil pressure, air, but still i was getting a high co reading. I have come across this before and it was due to a slow running motor but the motor is fine on this unit, also i checked for excess air due to leaks but all seams fine. So any suggestions would greatly appreciated.

Comments

  • Steamhead
    Steamhead Member Posts: 15,343
    Maybe

    the head adjustment is wrong? 
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Paul Fredricks_3
    Paul Fredricks_3 Member Posts: 1,557
    .

    We see this every so often. Most of the time, if everything else seems right, it just needs a day to settle down. In that case I usually blame it on loose soot that the vacuum didn't get. When we first had the electronic kits we'd send someone back the next day and everything would be fine.



    Other possible causes we have seen are air leaks between cast iron sections and a unit wet from condensation. No guarantees on those causes, but that's what we've seen.



    If we get bad readings we double check everything. If all checks out we let it go. I think there are times when you will never find a cause.
  • Robert O'Brien
    Robert O'Brien Member Posts: 3,451
    Riello RDB?

    What country are you in?
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  • Hardship
    Hardship Member Posts: 5
    High co

    The country is Ireland.
  • Techman
    Techman Member Posts: 2,144
    Good catch

    Robert! I didn't even catch that accent!
  • Hardship
    Hardship Member Posts: 5
    High co

    LOL LOL ya guys im a paddy in hardship.
  • Robert O'Brien
    Robert O'Brien Member Posts: 3,451
    How high?

    What are the exact numbers? Excess air?
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  • Hardship
    Hardship Member Posts: 5
    High co

    The excess air is 26%.
  • Steamhead
    Steamhead Member Posts: 15,343
    They're just bringing out the RDB in the States

    so most of us haven't seen it yet. But combustion is combustion, so we need to check all the usual suspects.



    If all the settings are correct, I'd look at the nozzle. It might look OK, but try another one to be sure.



    One of these days I'd like to come to Ireland, to see the original Baltimore.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Hardship
    Hardship Member Posts: 5
    High co

    Well i did try two nozzles, but knowing my luck i could have two faulty ones so i will try a different one. As for the Baltimore West Cork i can tell you one thing for sure, its a hell of a lot different than Baltimore in the U.S. but its a very beautiful place even in the winter storms "and summer ones to". I have spent a lot of time in the states but never Baltimore, maybe someday.
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