Expansion Vessel SizeNot ApplicableIncludes Expansion VesselNoERP (Energy Efficiency)YStanding Heat Loss kWh/24h1.78Number of Immersion Heaters2Years Guaranteed25 Years WarrantyWidth550mmUsageDesigned To Be Fitted With A Heat-Only BoilerTypeCylinders - Indirect UnventedToilet Cistern CapacityFTW--Power kW3Maximum Operating Pressure6MaterialStainless SteelFuel TypeExternal Source (Boiler)ERP RatingCDepth550mmConnection Size22 mm (Primary/Zone Valve)Coil TypeHigh Efficiency Corrugated CoilCapacity250 LSupplier Part NumberPROIN250PPSPRange DescriptionSystem PlusManufacturer Model NoPROIN250PPSPBrand NameGledhill