Abstract: A control for a solar-heating and ventillation-cooling air type solar system has temperature sensors, dual air distribution valves, valve actuators and a fan-integrated into a single module that is removably mounted together with a modular solar system enclosure. The control senses the interior space temperature and the exterior enviornment temperature, and determines and effects a solar system operating mode to provide a comfort function in all seasons. The control provides recirculation heating, direct heating, ventillation cooling and cool conservation, or variable combinations thereof.

Abstract: A modular space-heating solar system has integral air-handling controls which automatically select a heating mode, a venting mode, or a variable combination of the two, according to room temperature. This eliminates the potential capability of the solar system of over-heating the room, and maintains full air flow through the solar absorber so as to prevent damage and increase useful life of the system.Incorporation of the controls into the collector enclosure allows simple installation of this integrated solar system as a single unit complete with collecting, sensing, actuating and air-handling functions.