With an hourly recovery rate of up to 620 litres of hot water @ 50°C rise, the Rheem Heavy Duty electric range has been designed to be used whenever a large quantity of hot water is required. The Heavy Duty electric range is suitable for both indoor and/or outdoor installations. If you need large volumes of hot water, you need to learn about Rheem Equa-Flow. An Equa-Flow manifold system allows you to make multiple installations of up to eight Rheem water heaters on a single manifold. It's a modular system which lets you operate those eight heaters as though they were one. The cylinder is constructed from a special grade of steel and protected by two coats of a specially developed vitreous enamel and a larger, thicker anode. CFC free polyurethane foam insulation ensures heat losses are kept to a minimum. For high temperature applications such as sanitising, the Rheem Heavy Duty models have thermostats adjustable to 82°C