Siemens RDG2 KN Series Basic Documentation

Functions
Operating modes
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4.2 Operating modes
The thermostat operating mode can be influenced in different ways (see Different
ways to influence operating mode [➙ 28]). Specific heating and cooling setpoints
are assigned to each operating mode.
The thermostat sends the current room operating mode via bus.
The following operating modes are available:
Operating
mode
Icon
Description
Auto
In Auto mode, the operating mode is commanded via bus or local
schedule.
Auto is replaced by Comfort when no time schedule via bus is present.
Room operating
mode: Presence
detector
Comfort
In Comfort mode, the thermostat maintains the Comfort setpoint. This
setpoint can be defined via P011, P013…P016, and adjusted via the
rotary knob or bus.
In Comfort mode, the fan can be set to automatic or manual fan speed:
I, II or III.
The thermostat switches to Comfort mode when:
● Standard presence mode: The presence detector (local or via KNX)
is active (room is occupied)
*)
Room operating
mode:
Presence
detector
Economy
The setpoints (more energy savings than in Comfort mode) can be
defined via P019 and P020.
The thermostat switches to Economy mode when:
● The operating mode button is pressed (only possible if P002 is set
to 2),
● Economy is sent via bus,
● Hotel presence mode: When hotel guests leave their rooms, the
thermostat switches to Economy. The buttons are locked and
symbol displays.
*)
Room operating
mode:
Window contact
Protection
In Protection mode, the system is:
● Protected against frost (factory setting: 8 °C, configurable via P100)
● Protected against overheating (factory setting: OFF, configurable
via P101)
● No other operating mode can be selected locally if Protection mode
is commanded by time schedule via bus (e.g., from a central control
unit RMB795B) and is displayed.
The thermostat switches to Protection mode when:
● The operating mode button is pressed
● Protection is sent via bus
● The window contact is active (open window)
● "Window contact" is sent to thermostat via bus, e.g., from a KNX
switch
*)
*)
For details on window contact and presence detector, see Different ways to
influence operating mode [➙ 28].
Room operating mode:
State
Note

Siemens RDG2 KN Series Specifications

General

Brand	Siemens
Model	RDG2 KN Series
Category	Thermostat
Language	English