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valve and pump protection function is rendered active only if no heating
operations were executed within the last week. Unnecessary heating during
the heating season is thus avoided, thereby leaving the control system unaf-
fected.
4. Self-learning function
The self-learning function serves for the autonomous attaining of the comfort
temperature at a preset time. The antedated point at which the system swit-
ches from ECO over to comfort temperature sets itself all autonomously.
Depending on the calorific output and the prevailing outside temperature, the
heating time will vary.
5. Backlighting of the display
The length of time during which the display backlight is on, can be selected
as follows:
1. Backlight during operation plus 10 seconds after the last actuation of any
of the touch keys;
2. Additional backlight during operating times in comfort and also in party
mode;
3. Permanent backlight.
6. Display indications
If configuring the device for use as floor temperature controller, only the time
indication is active.
If the HTRRUu 210.021 has not been configured for use as floor temperature
controller, the operator can select between the following indications:
1. Time;
2. Temperature;
3. Time & temperature (alternating).
