12kW boiler with 150ltr indirect cylinder and all necessary components to configure an s-plan control system, to allow selection of heating only, hot water only, or both at the same time. Offers quiet operation and built-in fault-finding diagnostics. No flue required. Can be used for underfloor heating. Max. Central Heating Output: 12kW Indirect Unvented Cylinder Stainless Steel Heat Exchanger Compatible with Solar PV Panels 1 Year Guarantee 40,945BTU Backlit LCD Display In-Built Fault Finding Diagnostics Low Heat Loss & Fast Recovery Max. Central Heating Output: 12kW Indirect Unvented Cylinder Stainless Steel Heat Exchanger Compatible with Solar PV Panels 1 Year Guarantee 40,945BTU Backlit LCD Display In-Built Fault Finding Diagnostics Low Heat Loss & Fast Recovery