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Adjusting goodman propane burners

I have a 90% propane furnace with 3 burner units. Each has a adjustable screw which allows me to cut down on oxygen. currently wide open Flame going in chamber more yellow than blue. Should I adjust....?

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  • Anonymous Mar 28, 2014

    Lenox LF24-75A flame is not go going down in the burner tube as far as the other 4 tubes and turns to a lazy yellow flame when the other burners shut off



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Yellow flame can also mean inadequate gas pressure. Do you have a manometer? If not, call your gas company for a check.

Posted on Oct 21, 2008


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it will be in the combustion chamber on the burner bar you will have to remove the burner to get to it .

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check your air filter, a very dirty filter will cause the unit to over heat "180'" The burners turn off the unit cools itself with the blower and then relights.

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I have a Miller 90+ furnace running on Propane gas. We I start the furnace, everything is working perfectly except I notice that the first burner out of the 4 burners does not light. I have checked the...

Hi, propane gas is really hard on a furnace in causing a burner or burners to carbon up. Yes, there is gas coming from this orifice, what you need to do is grasp the burner from the front, lift the rear out of the slot it sets in as you pull forward, and take the burner out. Turn it over and clean it out. It may be full off rust and some carbon. You can do this, as it may take care of the problem. We have taken on some furnaces, if your home is heating fine on the 3 burners, and remove the orifice and just plug it off. Doesn't hurt anything at all, I believe its a 1/8 or 1/4' pipe plug. I have done this many times when the temperature rise is to high on a new unit, and the only option is to shut down one burner. No harm or adjustments needed. Try cleaning the burner first and make sure the tail end sets back in its slot. If this works, great, if not, plug it off and your set. Will save on your gas bill also.
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1 Answer


This 'adjustable plate' is known as an 'air shutter' located at the tips of the venturri tubes which are the tubes that carry the propane from the valve to the burner. These air shutters allow you to control your flame by mixing oxygen with propane to create a yellow flame to a blue flame. The perfect flame is a uniform blue flame with a small yellow tip.

Unfortunately, these air shutters are considered part of the burner itself and cannot be individually replaced. However, if the burner and venturri tubes are separate from each other, you may be able to get a replacement venturri tube without having to replace the entire burner unit.

Hope this helps.


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Furnace runs about 1 minute, then total shutdown

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