摘要 |
<p>The heater (10) has a burner (16) that is assigned under a control device (14) that communicates with an operating unit (18), where the heater is designed for a standard heating mode that is activated by a user only when an authorization to use the standard heating mode is provided. The heater is designed for an auxiliary heating mode that is activated independent of the authorization to use the standard heating mode. The authorization is verified by providing, removing and/or modifying a hardware (12) or by a data input, and is provided and tested only for a limited period.</p> |