Maisons de repos
The resthouse "Age d'Or" in Bastogne is part of the Vivalto group. This building (with its 50 beds) decided to produce its warm water thanks to solar thermal collectors. A bit more than 80 m² of Optisun collectors were placed on the building's roof. The choice of Drainback is obvious: it has allowed the installation to be sized in order to achieve a greater annual solar fraction. This system has been working since the end of 2014.