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Oil Fired Boiler Tune Up

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Hello,
I recently had a tune up on my boiler, 4yr old Peerless WBV-03 w/Beckett burner. Technician noted without explanation that there was "draft excess air pressure". Can anyone explain what this means and if there are any negative consequences? I'm wondering if the chimney is blocked in some way.
Thank you.

Comments

  • Steamhead
    Steamhead Member Posts: 16,889
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    What draft level did they measure and record? Might look something like -04 .
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  • HVACNUT
    HVACNUT Member Posts: 5,861
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    I would reach out to the company because "draft excess air pressure" isn't a term, especially without a number next to it.
    There is excess air.
    There is excess draft.
    There is excess pressure. 
    Is there a combustion report? 
    STEVEusaPA
  • Albie
    Albie Member Posts: 9
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    Here's the report:
    Fueloil #2
    CO2 max 15.7%
    4.6% O2
    36ppm CO
    500 deg F Fluegas Temp
    83.1% EFF
    77.1 deg F Ambient Temp
    -0.044in H20 Draft
    28.2% Excess Air Pressure
    12.24% CO2
    47ppm Undiluted CO



  • Robert O'Brien
    Robert O'Brien Member Posts: 3,541
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    Albie said:

    Here's the report:
    Fueloil #2
    CO2 max 15.7%
    4.6% O2
    36ppm CO
    500 deg F Fluegas Temp
    83.1% EFF
    77.1 deg F Ambient Temp
    -0.044in H20 Draft
    28.2% Excess Air Pressure
    12.24% CO2
    47ppm Undiluted CO



    It's excess air not excess air pressure. It's the quantity of air above that needed for stoichiometric combustion. Numbers look alright, CO is slightly high but probably from servicing.
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  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,613
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    Your numbers look fine. it looks like the burner is set up properly
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
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    Is that draft number at the breech or over the fire?

    There was an error rendering this rich post.

  • Albie
    Albie Member Posts: 9
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    Steve - I believe the the draft number was at the breech.
    Thank you all for your comments.