ADURO H1 Manual De Usuario página 62

Below 3 examples of pellet combustion, depending on the draft level:
Correct draft: optimal flame and low quantity of unburnt pellet particles.
Very high draft: Flame generates high quantity of "sparkles" flying out of the burner (unburnt pellet
particles)
Very weak draft: Flame is low and unburnt pellet piles up and overflows the burner.
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