Siemens RDG400KN Operating Instructions

Operating Instructions en
RDG400KN – the room thermostat with KNX communications that allows you to set the ideal room
temperature you want. The thermostat provides Comfort, Economy and Protection mode.
In addition it can operate in Auto timer mode according to a schedule via KNX bus.
You can either rely on the factory settings or make adjustments that suit your individual needs.

Main display

Room temperature in degrees
Celsius
Room temperature in degrees
Fahrenheit
Button Lock active
Fault indicator *
Condensation in the room *
Timer function active
Weekday 1 = Monday
Additional user info, e.g.
current time of day
Escape (Cancel)
Confirm (OK)
Operating mode button
Protection / OK
Rotary knob
* Needs to be configured by your HVAC installer
** Only supported with Synco 700 primary controller

Changing the room temperature


Turn the rotary knob clockwise (+) to increase, or counterclockwise (-) to decrease
the current room temperature setpoint. The thermostat changes to Comfort
The setting range is from 5...40 °C; it can be limited by parameters P09 and P10.
(for parameter settings, see reverse side).

Changing the operating mode of the thermostat

Press the operating mode button repeatedly until the symbol points to the operating
mode you desire.
1. Protection mode
 In protection mode, the plant stops operating. However, if the room temperature
falls below 8 °C, heating is switched on to protect the room against frost.
The setpoints for Protection mode can be changed by your HVAC installer if desired:
Changes made by installer: 
2. Comfort mode
 In Comfort mode, the thermostat maintains the room temperature on the setpoint
which can be adjusted with the rotary knob
3. Auto Timer mode

In Auto Timer mode, the thermostat automatically switches over between Comfort
and Economy mode according to the schedule via KNX bus.
If no schedule via KNX is available, then Auto Timer is replaced by Comfort.
4. Economy mode

In Economy mode, the thermostat maintains the room temperature at a lower or
higher setpoint, thus saving energy and money.

The thermostat can be set to Economy mode either by pressing the operating
mode button if enabled (P02 = 2), or via an external signal (switch or KNX bus
command) such as window switch, key card or presence detector.

The Economy setpoints are factory-set to 15 °C for heating and 30 °C for cooling.
They can be adjusted via parameters P11 and P12 (for parameter settings, see
reverse side).
Important: These setpoints can be set to OFF; which means that the thermostat
is not active., i.e. no protective heating or cooling function. Risk of frost!

Changing from heating to cooling mode

Not supported with all configurations
 The changeover from heating to cooling (or vice versa) is made
– either automatically by a changeover sensor, or a changeover switch, or a
remote changeover switch via KNX command
– or manually by pressing the operating mode button.
If the thermostat is configured for "heating only" or "Cooling only", changeover is
not available (see parameter P01)

To select cooling or heating manually (P01=2), press the operating mode button
until the symbol points to the mode you desire.

With automatic changeover or continuous heating / cooling, symbols
indicate that the system currently heats or cools.

With manual changeover, symbols
operates in heating or cooling mode. Symbols
currently heats or cools.
Fan display
The symbol informs you that the primary fan is active.
Only supported with Synco 700 primary controller.
Note:
s
RDG400KN
Operating mode
Room temperature
Heating mode
Outdoor temperature Electric heater active
Cooling mode
Comfort mode
Economy mode
Auto timer mode
Protection mode:
Protection against frost
Indicator for mode selection
Fan is active **
7 = Sunday
Frost protection: _________ ˚C Heat protection: __________˚C
/ indicate that the system currently
/ indicate that the system
.
/