Expansion Vessel Size250 LIncludes Expansion VesselYesERP (Energy Efficiency)YStanding Heat Loss kWh/24h1.78Years Guaranteed25 YearsWidth550mmUsagePrimary Water Only (Not Suitable For Potable Domestic Hot Water); Suitable For Air/Ground Source Heat Pumps, Wood-Burning Stoves And Open-Vented Boilers; Provides Connections For Multiple Inputs; Designed To Directly Supply The Heating CircuitTypeCylinders - Buffer StoreToilet Cistern CapacityFTW--Maximum Operating Pressure3.5MaterialStainless SteelERP RatingCDepth550mmCapacity250 LSupplier Part NumberPLU250MBRange DescriptionStainlessLite PlusManufacturer Model NoPLU250MBBrand NameGledhill