Burner replacement. Flame height.

I just replaced my banjo burner with a Multi Jet Propane Burner from More Beer.  I love it.  It’s like a jet engine with afterburner.  To maximize heat transfer, what is the proper relationship between flame and pot?  On high, should the flames be touching the pot bottom?  If not touching, what is the best approximate distance?

I suggest contacting the manufacturer.

I recently sent More Beer a technical question and was very pleased with the reply turn around time and the reply itself.