Control panel allows regulation of water temperature in the heating circuit from 20 to 85°C. Constant temperature control for ease of use. Requires 3-phase power supply, suitable for large domestic and commercial properties. Max. Central Heating Output: 24kW Stainless Steel Heat Exchanger Compatible with Viessmann or Third Party Cylinders Compatible with Thermal Solar Panels 1 Year Guarantee 81,891BTU Backlit LCD Display Inside Property Sensor Max. Central Heating Output: 24kW Stainless Steel Heat Exchanger Compatible with Viessmann or Third Party Cylinders Compatible with Thermal Solar Panels 1 Year Guarantee 81,891BTU Backlit LCD Display Inside Property Sensor