ERP (Energy Efficiency)YMaximum Vertical Flue25Years Guaranteed10Width420mmNox ClassNOx Class 6Noise Level48IncludesIsolation valves and wall hanging bracketHeight740mmHeat Output BTU66639Heat Output20 kWGas Council Number4136422Fuel TypeNatural GasERP RatingADepth275mmDHW Output0DHW Flow Rate at 35 Degree Rise0CH Condensing Max Output19.53Boiler TypeSystem BoilerBTU/h60,001 to 80,000Supplier Part Number20207900Range DescriptionSynergyBrand NameVokera