When the wood burner (6) is working, the produced heat will be transferred to the storage tank (3) or, if necessary, warm up the water in the hot water deposit (2).

When the solar collectors (1) produce heat, the solar liquid will bring it with priority to the hot water deposit (2). From the storage tank (3) the heating medium will be pumped through the radiators (5) to distribute the heat in the house.

If the requested temperature is reached, the change-over valve (4) will conduct the heat to the storage tank (3).