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
Additional functions
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4.6.9 Preventive operation
For the heating coil to reach its temperature, fan start can be delayed by a time
period set via P365.
In very warm and humid climates, the fan runs periodically or continuously at a low
fan speed (e.g., in empty apartments or shops) in Economy mode via P364, to
avoid damage from moisture due to lack of air circulation. Refer to "Fan kick"
function in Fan control [➙ 97].
4.6.10 NFC communication
NFC (near-field communication) is used to commission the thermostat via the
Siemens smartphone application PCT Go.
The distance between smartphone and the thermostat must be max. 2 cm while
scanning the NFC area on the individual package or antenna area of the
thermostat. Data exchange between controller and Siemens smartphone
application is 10 s.
P500 enables/disables NFC communication locally. When disabled (default is
enabled), the application cannot read or write the thermostat and message "NFC
communication is disabled on the thermostat." is displayed.
Using Siemens smartphone application, users can:
● Set, read or download thermostat parameter settings
● Enable or disable password protection by configuring P502
● Import and export the setting parameter list in CSV format
● Set and download schedules
● When NFC communication is enabled, the parameters can be configured even
if the thermostat has no power.
● The phone must have active NFC functionality.
For commissioning via Siemens smartphone application PCT Go, see
Commissioning [➙ 18].
Avoid cold air in heating
mode (P365)
Avoid damage from
moisture (P363, P364)
NFC (P500)
Note: