Aquasun 300L Pressurized Solar Water Heater The Aquasun 300L pressurized is a high-capacity solar water-heating system designed to operate with normal mains-water pressure, unlike the non-pressurized/gravity-fed version. Specifications Specification Details Brand Aquasun Capacity 300 Litres System Pressurized Tank Stainless steel Collector Heat-pipe vacuum tubes Circulation Thermosiphon Water pressure Mains/pressurized Installation Rooftop Insulation High-density thermal insulation Application Homes, apartments, guest houses, hotels & institutions Backup heating Electric element, depending on package Suitable for Multiple bathrooms/high hot-water demand