Can I position the gas logs in a different arrangement or use a different log set?
Not on a direct vent or vent free gas fireplace. A gas fireplace is an engineered system that includes the firebox, burner and logs. These items are made to work together as designed by the manufacturer and are tested and listed by AGA or UL. The installation manual has detailed diagrams showing proper log placement. Changing any of the specifications or placement of the logs could void your manufacturer’s warranty.