The Essential Beginners Guide to Live Steam Models:
Important Notes on using "BIX" Ceramic Gas Burners
I have recently been using some "BIX" ceramic gas burners, I have observed a problem with them which is easy to overlook & easy to rectify. If you have a "BIX" gas burner, read the instruction sheet carefully before use.
It is very important to position the gas jet in the right place, if the gas jet is too far out, the burner works well & the ceramic glows bright red, but after a while the burner overheats & this is accompanied by a change in tone to a "roaring" sound. When this happens, the gas is burning inside the burner, which also causes a white residue to form on the base of your steam boiler - this is not good.
The solution is to move the gas jet in a bit & observe blue triangular flames - not an overall red glow. This way, good heat is produced & the burner will work properly without overheating. I have only found this situation when using "Bix" gas burners, but it probably also applies to other types of ceramic gas burners.