Compact electric flow boiler for pressurised or open-vented systems. Heats water for radiator systems. Works with standard radiators, programmers, circulating pumps, room thermostats and thermostatic radiator valves. Ideal for apartments, extensions, loft conversions or conservatories where space is at a premium. Max. Central Heating Output: 12kW Copper Heat Exchanger For use with Vented & Unvented Cylinders Not Compatible with Solar Panels 2 Year Manufacturer's Guarantee (T&Cs Apply) 40,900BTU LED Indicators Adjustable Temperature Max. Central Heating Output: 12kW Copper Heat Exchanger For use with Vented & Unvented Cylinders Not Compatible with Solar Panels 2 Year Manufacturer's Guarantee (T&Cs Apply) 40,900BTU LED Indicators Adjustable Temperature