Expansion Vessel SizeNot ApplicableIncludes Expansion VesselNoERP (Energy Efficiency)NStanding Heat Loss kWh/24h2.04Number of Immersion HeatersCompatible With Dual ImmersionsYears Guaranteed25 Years Against Manufacturing DefectWidth545mmTypeCylinders - Indirect UnventedSolar CompatibleYesPower kW3 kWMaximum Operating Pressure7MaterialDuplex Stainless SteelHeight1203mmEnergy Efficiency RatingBDiameter545mmDepth545mmConnection Size1/2" Temperature & Pressure Relief Valve (T&P)Coil TypeTwin ZoneCapacity300 LSupplier Part NumberESPPT0300PVBrand NameUK Cylinders