Schematic for the collector thermostat control system.
MOTHER EARTH NEWS STAFF
PHOTO 1: This wiring junction connects the fan to the thermostat. PHOTO 2: The upper thermostat is connected to the solar collector. The lower thermostat is the house's main thermostat. PHOTO 3: This blower fan moves air from the collector. PHOTO 4: This thermometer measures the collector's temperature output.
PHOTOS: MOTHER EARTH NEWS STAFF