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Flame From One Burner in Gas Boiler Is Very Low

savageblu Member Posts: 8
edited November 2022 in Gas Heating
One of the 3 burners in my Gas Boiler is very low (see photos below). I was wondering if the holes or the tube may be clogged and need to be reamed out, or if it's something more serious.


    EBEBRATT-Ed Member Posts: 13,783
    Looks like a Crane boiler. Pull the burners out they are probably plugged with soot and dust. Those are good heavy CI burners and last forever. Take it all apart and clean them. Shut the gas off. Reach in and grab the rear of the burner and lift up and twist push towards the rear of the boiler. Or call a professional
  • HomerJSmith
    HomerJSmith Member Posts: 2,266
    Wire brush the top of the burners and then take a drill bit that fits the flame holes and clean each one and then shake the debris out. Be sure and clean any flame crossover holes, too.
  • savageblu
    savageblu Member Posts: 8
    OK thanks, I'll try that. I've already taken all the burners out when I replaced the thermocouple a few weeks ago, so that won't be a problem for me. I'm just not sure what the flame crossover holes are that you mentioned?
  • Big Ed_4
    Big Ed_4 Member Posts: 2,371
    You will also need to check the gas pressures .
    I have enough experience to know , that I dont know it all
  • ch4man
    ch4man Member Posts: 294
    a spider built a web in the orifice. pull that burner and run a small wire or pipe cleaner through the orifice.
  • Gordo
    Gordo Member Posts: 842
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Baltimore, MD (USA) and consulting anywhere.
  • HomerJSmith
    HomerJSmith Member Posts: 2,266
    edited November 2022
    Crossover holes are the holes that conducts the flame from one burner tube to another. Ya, spider webs are something I have encountered many times, especially pilot assembles. I have thought it was the odorant that is put in NG that attracts them.
  • savageblu
    savageblu Member Posts: 8
    edited November 2022
    OK. Thank you all so much for all your helpful advice. So, I cleared out the hole in the orifice and, as also suggested, I reamed out all the flame holes in the burner and the larger pipe hole and, lo and behold, the first burner is working again as it should.

    Thanks again for all your expert advice and helping me to keep warm this winter!

    Neil Savage