alre KTRRUu 217.456, Operating Instructions Manual

Page: 39 / 52

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5.7 Settings
The following functions are available:
5.7.1. Keylock
The keylock is activated 2 minutes after actuating any of the touch keys. The key icon appears on the
display to indicate this locked state. Actuating and holding any of the keys depressed for 10 seconds
reactivates the touch keys.
Factory setting: OFF
5.7.2. Automatic change between daylight saving and standard time
The harmonised daylight saving time in the European Union takes effect as of the last Sunday in
March, i.e. as of 2.00 o’clock a.m. CET and lasts until to 3.00 o’clock a.m. on the last Sunday in
October (CEST) each year (directive 2000/84/EC of the European Council and Parliament). The tem-
perature controller changes the time all automatically at these dates. The automatic change between
daylight saving and standard time can also be deactivated to enable the changing of the time at other
dates or to meet the time conditions in other regions.
Factory setting: ON
5.7.3. Valve and pump protection function
The valve and pump protection function serves to prevent the valve seat and/or the pump(s) from cor-
roding up during longer stop times. If using the device for the control of warm-water heating systems,
activating the valve protection function is recommended. After activation of the valve and pump pro-
tection function, the controller actuates the valve(s) or triggers a heating pump once every Monday
at 11.00 o’clock a.m. over a 5 minute time period.
Factory setting: OFF
5.7.4. Self-learning function
The self-learning function serves for the autonomous attaining of the comfort temperature at a pre-
set time. The antedated point at which the system switches 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. The self-learning function is available only if operating in heating mode.
Factory setting: OFF
5.7.5. 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. In addition to above 1.: Backlight during the “heating” comfort times and during operation in party
mode
3. In addition to above 1.: Backlight during the “heating” and “cooling” comfort times and during
operation in party mode
4. In addition to above 1.: Backlight during the “cooling” comfort times and during operation in party
mode
5. Permanent backlight.
Factory setting: During operation plus 10 seconds after the last actuation of any of the touch keys