5 Year Warranty. Available in white. Improved push-button LCD display, with diagnostic codes similar to that of the CDi Classic, making day-to-day operation easy and reliable. Industry first RF Key links the boiler with our wireless Bosch Easy Control. Steel reinforced front cover can be removed with one screw for quick and easy internal access. Unique Greenstar Intelligent Filling System can eliminate the need for your customer to manually refill the boiler.