Expansion Vessel SizeNot ApplicableIncludes Expansion VesselNoWeight SourceSupplierERP (Energy Efficiency)YStanding Heat Loss kWh/24h1.71Number of Immersion Heaters1Years Guaranteed25 Year Guarantee (Cylinder Shell)Width490mmUsageThe uniSTOR range can be used with both system and heat only boilers and heat pumpsTypeCylinders - Indirect UnventedTank Capacity175 LStandards MetWRAS approved, NSF Solar CompatibleNoPower kW3 kWMaximum Operating Pressure6 barMaterialStainless SteelHeight1745mmHeat Loss1.71Flow Rate33.33 l/minERP RatingCDiameter490Depth490mmConnection Size22/28mmColourWhiteCold or Hot WaterDomestic Hot WaterCoil TypeHighly engineered coil-in-coil design creates the maximum surface area and ensures the heat exchanger sits as low as possible in the cylinder, boosting heat transfer and improving performanceCapacity175 LSupplier Part Number8000011621Range DescriptionRenewables CylindersBrand NameVaillant