The basic purpose of mixers available in the catalogues of InstalSystem package is to reduce the temperature of working medium for radiant heating installations. The catalogues of mixers include various types of mixers and pump groups, necessary for supplying the medium with the required temperature to the designed circuit. The elements included in the mixer/pump group can be pumps, filters, manometers and thermometers. The pumps present in the mixer may be those of a particular manufacturer and have specific characteristics in accordance with the manufacturer’s specifications, or they may be ‘no name’ pumps with unlimited capabilities. Such ‘no name’ pumps are found as standard in the neutral catalogue, and are also often an option in company catalogues. Then, based on the required pump parameters determined by the programme, a pump must be manually selected from any manufacturer’s range. After calculations, in addition to a set of thermal and hydraulic parameters for the elements included in the group, the programme, together with a list of valves and fittings, automatically generates a material bill of mixers. The InstalSystem package includes a neutral catalog with typical mixers and pump groups and extended library of company catalogues (check the list: Partners offering company versions of programs and catalogues).