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
Fan control
4
A6V11545892_en--_b
103 | 170
● Auto fan runs in the dead zone at low speed during cooling only (P029 = 2).
During heating, the fan does not run in the dead zone.
● Auto or manual fan does not run in the dead zone (P029 = 3)
● Auto or manual fan runs in the dead zone at low speed during heating and
cooling (P029 = 4)
● Auto or manual fan runs in the dead zone at low speed during cooling only
(P029 = 5).
During heating, the fan does not run in the dead zone.
When the fan does not run in the dead zone (P029 = 0), " Periodic fan kick
Comfort" (P363) function can be enabled to periodically ventilate the room.
When the fan starts from standstill, it starts at speed 3 for 1 second to ensure safe
fan motor start by overcoming inertia and friction (selected via P361).
In the heating sequence, when the return water temperature exceeds 30 °C
(factory setting, P366), fan operation is enabled even if the fan start delay time
(P365) is not reached.
The universal input "coil temperature" (P150, P153 or P155 = 12) is required to
activate this function.
When the electric heater is switched off, the fan overruns for 60 seconds (P352) to
avoid overtemperature of the electric heater or prevent the thermal cutout from
responding.
WARNING
Fan failure
In case of fan failure, the thermostat cannot protect the electric heater against
overtemperature. For this reason, the electric heater must have a separate safety
device (thermal cutout).
The "Clean fan filter reminder" function counts the fan operating hours and displays
message "FIL " to remind users to change/clean the fan filter as soon as the
threshold is reached. This does not impact thermostat, which continues to run
normally. The function is set via P501 (default = Off (0)).
The "Clean filter reminder" is reset when the operating mode is manually set to
Protection and back.
In Auto mode, the default fan mode is automatic. The fan mode can be changed to
Manual by pressing the FAN button. The fan returns to automatic mode after each
switchover from Comfort to Economy, and vice versa.
To allow the heating/cooling coil to reach its temperature, fan start can be delayed
by a time period set via P365.
Function for On/Off control outputs is listed as per the following figure:
Fan start kick (P361)
Fan start, minimum hot
water temperature (P366)
Fan overrun for electric
heater
Clean fan filter reminder
Fault information
Fan in Auto mode
Example
Fan start delay