This logic group controls the heating for a room as required.

In the first step, a presence detector checks whether a person is in the room for longer than 20 seconds. This prevents the heating from also switching on when the room is only briefly entered.
The heating is only switched on after the preset time in the Delay element.

If the presence detector detects no movement, the heating is switched off again via a second delay. The delay is important to prevent the heating from being switched off unintentionally when the person is not moving.
The delay before the heating is not switched off is set to 5 minutes.

In addition, the function can be defined for desired times of day via a weekly clock.

Jean-Claude Jaeger
(219; 2022.04)