Storage tank with 300 liter capacity. Inside and outside food-grade stainless steel. 55mm foam insulation keeps water warm for 72 hours.

Feeder tank with mechanical floater valve. Automatically refills the storage tank when hot water is taken out.

Collector tubes made out of special quartz glass. Vacuum between inner and outer tube  prevents heat loss. Through thermal effect the water inside the tubes rises into the  storage tank as it heats up. 

Mounting bracket made out of stainless steel and aluminum components.

Vent