Application Mode - Siemens DF301 Basic Documentation

Application mode

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Siemens...........................RDF301, RDF301.50..., RDF600KN, RDF600KN/VB, RDF600KN/S
Smart Infrastructure
3.6.2 Application mode
The behavior of the thermostat can be influenced by a building automation and
control system (BACS) via bus with the command "Application mode".
With this signal, cooling and/or heating activity can be enabled or disabled.
Application mode is supported in LTE Mode and S-Mode.
The RDF KNX thermostats support the following commands:
Application Description
mode
Auto Thermostat automatically changes between
heating and cooling
Heat Thermostat is only allowed to heat
Morning If "Morning warm-up" is received, the room
warm-up should be heated up as fast as possible (if
necessary). The thermostat will only allow
heating
Cool Thermostat is only allowed to provide cooling
Night purge Not supported by fan coil applications
Pre-cool If "Pre-cool" is received, the room should be
cooled down as fast as possible (if
necessary). The thermostat will only allow
cooling
OFF Thermostat is not controlling the outputs,
which means all outputs go to off or 0%
Emergency The thermostat should heat as much as
heat possible. The thermostat will only allow
heating
Fan only All control outputs are set to 0% and only the
fan is set to high speed.
Function will be terminated by any operation
on the thermostat
With all other commands, the thermostat behaves like in Auto mode, i.e. heating or
cooling according to demand.
Control sequence
enabled
Heating and/or cooling
Heating only
Heating only
Cooling only
N/A (= Auto)
Cooling only
Neither heating nor
cooling
Heating only
Run fan in high speed
Basic Documentation CE1P3171en
2020-02-21