Siemens RDG2 KN Series Basic Documentation

Functions
Additional functions
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P151 (X1), P154 (X2) or P156 (U1) = 0
(default, normally open)
P151 (X1), P154 (X2) or P156 (U1) = 1
(Normally close)
Contact open ⇨ heating mode
Contact open ⇨ cooling mode
Contact closed ⇨ cooling mode
Contact closed ⇨ heating mode
● Manual heating/cooling changeover means selection via changeover button on
the thermostat by repeatedly pushing the button until the required mode is
displayed.
● If manual heating/cooling changeover is commissioned (P001 = 3),
heating/cooling mode cannot be changed via bus/changeover sensor/switch; it
remains in the last mode selected locally via button.
The thermostat acquires the room temperature via built-in sensor, external room
temperature sensor (QAA32), or external return air temperature sensor (NTC 3k or
LG-Ni1000) connected to multifunctional input X1, X2 or U1.
Inputs X1, X2 or U1 must be commissioned accordingly. See Multifunctional input,
digital input [➙ 112].
4.6.2 Presence detector
The operating mode can be changed to Comfort or Economy mode based on room
occupancy (room occupied or unoccupied, via presence detector or keycard).
The presence detector input switches the operating mode to Comfort when the
room is occupied and switches back to the previous operating mode when the
room is unoccupied.
Presence detection is also possible via bus. In this case, do not assign the function
to any local input X1, X2 or U1.
Time schedule via
bus
Presence detector behavior
Comfort mode
When the presence detector is activated or deactivated, the
operating mode remains in Comfort.
Economy mode
● When the presence detector is activated, the operating
mode changes to Comfort.
● When the presence detector is deactivated, the
operating mode changes to Economy (Auto).
Protection mode
Presence detection has no influence on the operating
mode.
Not available
● When the presence detector is activated, the operating
mode changes to Comfort.
● When the presence detector is deactivated, the
operating mode changes to previous operating mode.
If a room is unoccupied, the operating mode changes to Economy. This overrides
the operating mode on the thermostat. The buttons are locked and symbol is
displayed. An occupied room sets the thermostat back to the previous operating
mode. Use a card reader and not a motion detector combined with hotel presence
function for hotel applications, as the buttons are locked in case of unoccupancy.
Hotel presence detection is also possible via bus. In this case, do not assign the
function to local input X1, X2 or U1.
Manual heating/cooling
changeover (P001)
External/return air
temperature sensor
(P150, P153, P155)
Standard presence mode
(Input: P150 / P153 / P155
= 10)
Hotel presence mode
(Input: P150 / P153 / P155
= 13)

Siemens RDG2 KN Series Specifications

General

Brand	Siemens
Model	RDG2 KN Series
Category	Thermostat
Language	English