| 摘要 |
<p>The device has a heating device (14) e.g. electric heating device, placed in an internal space of a reservoir (10). The reservoir has a cold water inlet (16) and a hot water outlet (18) connected to an external hot water usage point (8) such that internal space constitutes an active water storage and heating space (100). The reservoir has an inflatable pocket (2) associated with an inflation unit formed of valves (260, 280). The inflation unit inflates and/or deflates the pocket in a controlled manner, and the pocket defines a volume of the storage and heating space by inflation or deflation. Independent claims are also included for the following: (1) a method for restoration of a hot water installation (2) a method for checking a better state of an inflatable pocket in a water heating device.</p> |
