Expansion Vessel Size50Includes Expansion VesselYesERP (Energy Efficiency)NNumber of Immersion Heaters1 x 3 kWYears GuaranteedLifetime (Inner Container); 2 Years (Components/Parts)Width580mmUsageDesigned For Use With An Air Or Ground Source Heat Pump (Main Heat Source); Supplies Mains Pressure Hot WaterTypeCylinders - Indirect UnventedSolar CompatibleNoPower kW3 kWMaximum Operating Pressure3MaterialStainless SteelHeight2100mmFuel TypeExternal Source (Heat Pump)Flow RateHigh Flow RatesDepth580mmConnection Size22 mm Compression FittingsColourWhiteCoil TypePurpose-Designed Coil, 3.3m2Capacity300 L (Integrated 50 L Buffer)Supplier Part NumberTSMI300/50/HPRange DescriptionTempestManufacturer Model NoTSMI300/50/HPBrand NameTelford