Abstract: Methods and devices for operating protean water installation devices connected to water installation controlling apparatuses and comprising two or more water installation device profiles, wherein only one of the water installation device profiles is enabled at any given time are disclosed. Family descriptor files are associated with the protean water installation devices and with two or more virtual descriptor files. Each virtual descriptor file is associated with one water installation device profile of the water installation device; a registry location indicating the enabled water installation device profile is read at the protean water installation device and a virtual descriptor file, associated with the identified water installation device profile, is executed to operate the water installation device.