Roasting - Airflow control on a Loring?

This may not be the place to ask but really interested in Loring Roasters but since the afterburner is incorporated with the roaster heat, i feel like you wouldn’t be able to control airflow temp, pressure or flow like you would with a typical drum roaster as it may effect final emissions and efficiency.

Airflow or Pressure in Loring is tied to burner power.