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Flame rollout on boiler

Suddenly have carbon monoxide type smell, edges of heat exchanger are black from soot, looking at flame when running it is actually lapping outside the firebox. As i said, it suddenlt developed, check exhaust pipe up through the attic and roof where if has worked for years, no obstruction. Light a candle, blow it out, hold it near the exhaust and it sucks the smoke right up, reasonably certain I do not have a exhaust pipe problem.

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Is this a hot air system ??? if so does this problem occur when blower comes on if so heat exchanger is cracked.

Posted on Nov 20, 2013

  • Bob Myers
    Bob Myers Nov 20, 2013

    No, it is a boiler system, water recirculation system. On a whim i adjusted the pressure regulator to lessen the height of the flame, that seems to have squelched the problem for now. I guess the regulator is going bad?



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SOURCE: 8 year old oil fired boiler with horizontal

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SOURCE: williams wall furnace fire box full of soot carbon monoxide.

Needs a service big time turn off do not use phone a gas fitter and get it serviced .

Not a job for your self to do .

Posted on Nov 06, 2011

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SOURCE: Reznor UDAP 100 tripping Flame Rollout Switch

If the flame is rolling out of the heater then the burners of heat exchanger is blocked needs cleaning

Posted on Feb 20, 2013

SOURCE: I have a goodman gmpno 60. I have a lot of flame

This was my 1st thought after a crack. The fact the indoor blower affects it is a give away. I would get a carbon monoxide detector, if it goes off you have some work to do.

Posted on Oct 19, 2013

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This was my 1st thought after a crack. The fact the indoor blower affects it is a give away. I would get a carbon monoxide detector, if it goes off you have some work to do.

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Carbon monoxide can be deadly at high concentrations.

It could be burning wires, but would smell like burnt rubber.

It could be mold/mildew but would smell musty like dirty socks.

It could be a build up of dust oil etc on the heat exchanger, but that is usually only smelled when it is started up for the first time in months.

Make sure the filters are clean. Dirty filters can cause overheating of the heat exchanger and sometimes cause smells.

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