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Double wall furnace fire balls.

brat77
brat77 Member Posts: 1
in Gas Heating

My friend has a old cozy double wall furnace that she said there were fire balls coming out of it.

What could cause this to happen. I got down there with a jumper wire and started it dozen times. Once it kinda had a lil hesitation on second burner ignition. Could the air mixture adjustment plate on bottom of burner vertical tube be causing this?

Comments

  • retiredguy
    retiredguy Member Posts: 982

    Where do you see the fire balls. Are they inside the furnace, do they blow out of the heat exchanger, do the blow out of the chimney, where? Add pictures or a better explanation.

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,584

    Burners are probably dirty or knocked out of alignment. I would also check gas pressure for starters.

  • mattmia2
    mattmia2 Member Posts: 11,026

    or the vent was blocked with ice and it was rollout but delayed ignition of the second burner suggests dirt or cobwebs or rust blocking part of the burners @EBEBRATT-Ed suggested. if it has a blower also watch the flame when the blower starts, if the flame moves the heat exchanger is done

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 9,506

    Does your friend listen to Jerry Lee Lewis records?

    https://www.imdb.com/title/tt0097457/

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    guzzinerd
  • guzzinerd
    guzzinerd Member Posts: 290

    Saw that once after the local plumbers did their annual boiler "check". They had knocked one of the burners off the gas line

    Bryant 245-8, 430k btu, 2-pipe steam in a 1930s 6-unit 1-story apt building in the NM mountains. 26 radiators 3800sqf

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