Expansion Vessel SizeNot ApplicableIncludes Expansion VesselNoStanding Heat Loss kWh/24h2.04Number of Immersion Heaters1 x 3 kW Incoloy Supplied as StandardYears Guaranteed25 Years (Cylinder) (Manufacturer Backed); 2 Years (Parts)Width545mmTypeCylinders - Heat PumpPower kW3 kWMaximum Operating Pressure7MaterialDuplex Stainless SteelHeight1945mmHeat Loss94 Watts/hFuel TypeExternal Source (Boiler)Energy Efficiency RatingCDiameter545mmDepth545mmConnection Size22 mm (Hot & Cold), 28 mm (Coil Connections), 1/2" Temperature & Pressure Relief ValveColourSilver (Recyclable Casing)Coil TypeDirect (No Coil)Capacity300 LSupplier Part NumberESHPP3300XBrand NameUK Cylinders