A SYSTEM FOR SUPPLYING CONDITIONED AIR

摘要

A rapid increase in the static pressure in the air duct which occurs while the damper is moving to the fully closed position is avoided by maintaining the damper at a preclosed position between fully opened and fully closed positions for a prescribed period and by simultaneously reducing the amount of conditioned air supplied to the air duct while the damper is positioned at the pre-closed position to regulate the static pressure in the air duct to a desirable level. Thus, air leakage noise which occurs in the air duct when the static pressure in the air duct rapidly increases for a short time can be avoided.