<p>The solar energy collector unit (10) has at least one collector (13) with an absorber (14) and a channel system (15). A tank (12) over the collector is for the circulation of the heat exchanger flow. A valve (24) with a thermostatic operation is at the overheating protection unit (20) at the inflow channel (16). A thermometer is inserted into the inflow channel together with the valve.</p>
