Mattira wall mounted digital modulating, electric combination boiler for heating and hot water. 3-15kw outputs change via the digital display on the boiler.Each boiler suitable for single or 3-phase suppliesDigital modulating which, equates to less energy wasteUp to 12 litres per minute flow rateDigital display with user adjustable controls and key lock facilityKiwa approved productFeatures:Each boiler suitable for single or 3-phase supplies3-12kw range rated on single phase supplies3-15kw range rated on 3-phase suppliesSmart Electronic Modulation System to regulate energy consumption according to the exact heating needs at all times (external room stat required)Digital modulating which, equates to less energy wasteIdeal for single bathroom propertiesUp to 12 litres per minute flow rateIntegral 50ltr store of water with user adjustable temperature regulation to provide "instant" hot waterSilent TRIAC power switchesS/Steel shielded, Incoloy800 elements for high temperature strength & re