Is the Barometric Draft Control necessary?
Yes, the Barometric Draft Control is necessary for four specific reasons: A)To eliminate the appliance pressure switch override if the appliance inducer motor fails. B)To bring in dilution air to regulate and balance airflow throughout the venting system. C)To help prevent condensation throughout the venting system by reducing the dew point, and D)To maintain the proper overfire draft under varying outside conditions.
