I thought every pellet unit was convection...
The term
convection has a new meaning when referring to ovens, electric, gas and pellet fueled. When scientists refer to convection currents they mean air movement (or liquid) caused by warmer (lighter) material rising and cooler (heavier) material sinking. So every oven probably has natural convection currents.
But, as usual, an advertising person misappropriated the word. Now it applies to ovens with fans circulating the inside air. Its use has nothing relative to science. As you can probably infer, it annoys me.
EDIT: Stupid spelling creeps in.