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Siemens RDG400KN Basic documentation CE1P3192en
Building Technologies Functions 20 Jul 2010
Comfort mode can be temporarily extended (e.g. working after business hour or on
weekends) when the thermostat is commanded to Economy mode by a central
time switch, operating mode switchover via KNX or via local input X1, D1.
The operating mode button switches the operating mode back to Comfort for the
period preset in P68.
Press the operating mode button again to stop the timer.
The following conditions must be fulfilled:
 Mode selection via operating mode button is set to “Protection-Auto” (P02 = 1)
and parameter P68 (extend Comfort period) is greater than 0
 The time schedule via bus is Economy or Operating mode switchover is active
During the temporary Comfort mode extension, symbol
appears.
If parameter P68 (extend Comfort period) = 0, extended Comfort cannot be
activated; pressing the left button will switch the thermostat to Protection.
The effective room operating mode can be forced temporarily into Comfort or
Economy / Protection mode. The time period is adjusted via the rotary knob:
 Extend presence: Set the device to Comfort mode for the selected time period
 Extend absence: Set the device to Economy / Protection mode for the selected
time period
To activate the function, keep the left button pressed and, within 3 seconds, turn
the rotary knob…
 clockwise for extended presence
 counterclockwise for extended absence
The rotary knob adjusts the time period:
 Extend presence: 0:00…+9:30 in steps of 30 minutes; symbol
appears
 Extend absence: 0:00…–9:30 in steps of 30 minutes; symbol
or appears
During the extended presence / absence period, the sandglass symbol
appears.
Temporary timer to
extend the Comfort
mode
Timer for extension of
presence / absence