The Sunmaster Flat Plate System 270L with 2 Collectors consists of a cost-effective ground mounted storage tank and highly efficient collectors mounted on the roof. There’s no need to reinforce the roof structure and the tank and collectors can be installed separately. The system has a small pump that circulates the water from the cylinder through to the collectors to absorb the maximum available solar energy. Designed by Rinnai who are leaders in developing innovative and durable solar technology.