Control panel allows regulation of water temperature in the heating circuit from 20 to 85°C. Weather control ensures the most energy-efficient boiler operation thanks to an automatic response to external temperature changes. Requires single-phase power supply, suitable for domestic properties. Max. Central Heating Output: 8kW Stainless Steel Heat Exchanger Compatible with Viessmann or Third Party Cylinders Compatible with Thermal Solar Panels 1 Year Guarantee 27,297BTU Backlit LCD Display External Sensor Max. Central Heating Output: 8kW Stainless Steel Heat Exchanger Compatible with Viessmann or Third Party Cylinders Compatible with Thermal Solar Panels 1 Year Guarantee 27,297BTU Backlit LCD Display External Sensor