Power vent water heater with electronic control system

摘要

A water heater of the invention includes a water container; a combustion chamber adjacent the water container; a burner associated with the combustion chamber; a flue connected to the combustion chamber; a blower assembly positioned to receive combustion products from the flue and convey the combustion products to a remote location; and a pressure switch positioned to detect blockage of combustion products away from the blower assembly and flow of air from the flue prior to initiation of combustion in the combustion chamber.