A hot water apparatus is provided in which heat recovery is performed as much as possible allowing condensate to be generated and excellent heat efficiency is achieved without providing a plurality of heat exchangers by effectively evaporating generated condensate. The vehicle includes an image projecting system for projecting a motion picture on an interior surface of the vehicle, and at least one window glass configurable to function as a screen for showing images projected by the image projecting system. Authentication information is generated at the endpoint. The interrupter valve also has a closed state wherein the flow path is closed in the absence of the protruding member of the filter. A wireless terminal and network element relating to the method are also provided. A movement apparatus may be provided that is movable axially relative to the inlet opening to vary the size of the tubular inlet opening.