Natural Gas to L.P conversion on stove.
For the top burners, you had to replace orifices, right? For the oven, did you replace the gas orifice, or tighten the hood orifice until it stopped? If the hood orifice is not tightened enough, there may be too much gas, producing a yellow flame. The trick on tightening a brass hood orifice is to tighten it all the way, without breaking it! Adjust the air shutter to full open. If there is too much air for the correct amount of gas, you will have noisy, lifting blue flames. Adjust the air shutter a little.
Propane is a hydrocarbon. Yellow in a LPG flame will produce carbon (soot). The reason is: Too much gas, or too little air, or both. When converting appliances to propane, in general, the air shutter is opened fully or nearly so. (For Natural gas, 2/3 closed).
jimmyj555 - 28 years a gas man.
Last edited by jimmyj555; 02-20-2008 at 09:17 PM.
Reason: add safety comment.