Yes, warranty is voided if the system is not installed according to our manufacturer instructions. The mounting bracket for the hammered copper bowls and the feet of the cast stone bowl allow for cooling airflow to the burner electronics. This prevents the system from overheating and malfunctioning. The vents also allow for possible gas buildup in the bottom of the bowl to evacuate. Propane gas is heavier than air and will settle into low-lying places if not properly ventilated.