GlossaryrtRefers to the difference in temperature between the water circulating in the central heating system andthat of the ambient temperature. It is important to use the correct rt when selecting your radiators, asthe same radiator will have different outputs at different water temperatures.rt50rt50 is the UK standard, however Henrad also quote at lower levels for lower water temperature systems.Is a set of International regulations related to quality management systems.BSPBritish Standard Piping.Btu/hrBritish Thermal Unit per hour is the standard measurement used to state the amount of output of anyheat generating device.The CE marking is the manufacturers declaration that the product meets the requirements of theapplicable EC directive. This is applicable to all Henrad products.EN 442 is the European standard which defines the manufacturing standards for radiators andconvectors which operate at temperatures of less than 120°C. The standard defines the type of steelwhich must be used, the type of pressure testing which must be carried out and the accuracy of the heatoutputs quoted in the literature.Heat lossIs the amount of heat a room loses, it is therefore an important calculation when determining what sizeradiator is required to heat a room to the correct level.The Manufacturers' Association of Radiators and Convectors.RALA European wide colour matching system.TBOE / BOERefers to which position the pipes are connected to the radiator, OE means opposite end i.e. 1 pipeon each side, TB is top bottom i.e. 1 pipe is connected to the top and 1 to the bottom, B is both pipesconnected to the bottom.Type 11Also known as Type K1, is a type of radiator with 1 radiator panel and 1 set of convection fins.Type 21Also known as Type P+, is a type of radiator with 2 radiator panels and 1 set of convection fins.Type 22Also known as Type K2, is a type of radiator with 2 radiator panels and 2 sets of convection fins.Type 33Also known as Type K3, is a type of radiator with 3 radiator panels and 3 sets of convection fins.WarrantyThe warranty covers any defect that is attributable to a manufacturing, assembly or material fault, furtherdetails available on request.WattsIs another measurement for heat output.Standard steel panel products, which are installed in toilets or any areas of high humidity (including bathrooms, kitchensand shower rooms, etc.) are limited to a twelve months parts and labour warranty.66
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