Basic Documentation
Table Of Contents
- 1 About this document
- 2 Overview
- 3 Notes
- 4 Functions
- 4.1 Temperature control
- 4.2 Operating modes
- 4.3 Room temperature setpoints
- 4.4 Application overview
- 4.5 Power supply selection for RDG200KN
- 4.6 Additional functions
- 4.7 Control sequences
- 4.7.1 Sequence overview (setting via P001)
- 4.7.2 Application mode
- 4.7.3 2-pipe fan coil unit
- 4.7.4 2-pipe fan coil unit with electric heater
- 4.7.5 2-pipe fan coil unit with radiator or floor heating
- 4.7.6 2-stage heating and cooling
- 4.7.7 4-pipe fan coil unit
- 4.7.8 4-pipe fan coil unit with electric heater
- 4.7.9 Chilled/heated ceiling and radiator applications
- 4.7.10 Compressor applications
- 4.7.11 Applications with external AQR sensor or QMX room operator unit
- 4.7.12 Setpoints and sequences
- 4.8 Control outputs
- 4.9 Fan control
- 4.10 Multifunctional input, digital input
- 4.11 Handling system faults
- 4.12 KNX communications
- 4.12.1 S-Mode
- 4.12.2 Master/slave configuration in KNX S-Mode
- 4.12.3 LTE-Mode
- 4.12.4 Zone addressing in LTE-Mode (with Synco)
- 4.12.5 Master/slave configuration in LTE-Mode
- 4.12.6 Example of heating and cooling demand zones
- 4.12.7 Send heartbeat and receive timeout
- 4.12.8 Startup
- 4.12.9 Heating and cooling demand
- 4.12.10 Fault and alarms function on KNX
- 4.13 Communication objects
- 4.14 Communication objects (LTE-Mode)
- 4.15 Control parameters
- 5 Supported KNX tools
- 6 Connection
- 7 Technical data
- 8 Dimensions
- Index
Functions
Control sequences
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4.7.2 Application mode
The behavior of the thermostat can be influenced via building automation and
control system (BACS) and bus using command "Application mode".
Cooling, heating or both can be enabled or disabled using this signal. Application
mode is supported in LTE-Mode and S-Mode.
RDG2..KN KNX thermostats support the following commands:
#
Application
mode
Description
Control sequence
enabled
0
Auto
The thermostat automatically
changes over between heating
and cooling.
Heating, cooling or both
1
Heat
The thermostat only allows for
heating.
Heating only
2
Morning warm-up
If "Morning warm-up" is
received, the room is heated
up as fast as possible (as
needed). The thermostat only
allows for heating.
Heating only
3
Cool
The thermostat only allows for
cooling.
Cooling only
4
Night purge
Not supported by fan coil
applications.
N/A (= Auto)
5
Pre-cool
If "Pre-cool" is received, the
room is cooled down as fast
as possible (as needed). The
thermostat only allows for
cooling.
Cooling only
6
Off
Thermostat does not control
outputs, that is, all outputs go
to off or 0%.
Neither heating nor
cooling
8
Emergency heat
The thermostat heats as much
as possible. The thermostat
allows only heating.
Heating only
9
Fan only
All control outputs are set to
0% and only the fan is set to
high speed.
The function is terminated by
any operation on the
thermostat.
Run fan at high speed
With all other commands, the thermostat behaves as if in Auto mode, thus, heating
or cooling by demand.
The heating and cooling states of the thermostat can be monitored with the ACS
tool (diagnostic value "Control sequence"). The last active mode is displayed when
the thermostat is in the dead zone or temperature control is disabled.
With a 2-pipe application, the control sequence state is determined by the
application mode and the state of the heating/cooling changeover signal (via local
sensor or bus), or fixed according to the selected control sequence (P001 =
heating (0)/cooling (1)).
Application mode
ACS
Heating or cooling