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
4
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To reduce wear and tear on the HVAC equipment, the minimum output On/Off time
of the Qx relay output can be adjusted (1…20 minutes) via P212 and P213. The
factory setting is 1 minute.
When the operating mode is changed from Comfort to Economy or Protection, the
relay contact remains energized until the end of the minimum on time set via P212.
4.6.4 Monitoring and limiting functions
The floor temperature should be limited for two reasons: Comfort and protection of
the floor.
The floor temperature sensor, connected to multifunctional input X1, X2 or U1,
acquires the floor temperature. If the temperature exceeds the parameterized limit
(P252), the heating valve is fully closed until the floor temperature drops to a level
2 K below the parameterized limit. The factory setting of P252 is 28 ℃.
Input X1, X2 or U1 must be commissioned accordingly (P150, P153, P155 = 11)
and the type of sensor need to be selected (P151, P154, P156 = 2 (NTC 3K) or 3
(LG-Ni1000)).
See Multifunctional input, digital input [➙ 104].
● Living rooms:
Up to 26 °C for extended presence, up to 28 °C for short presence.
● Bathrooms:
Up to 28 °C for extended presence, up to 30 °C for short presence.
The "Floor temperature limitation" function influences the outputs listed in the table
below:
Application
Output
Y1/Y10
Output
Y2/Y20
Output
Y3/Y30
Output
Y4/U1
"Floor temp.limit" function has
impact on
Remark
Heating
(P001 =
0/2/3)
Cooling
P001 =
1/2/3
Heating
and
Cooling
(P001 =
4)
2-pipe
H/C valve
-
-
-
Y1/Y10
N/A
-
-
2-pipe with electric
heater
H/C valve
Electric
heater
-
-
Y2/Y20
Y2/Y20
*)
-
Only
electric
heater
2-pipe with radiator
H/C valve
Radiator
-
-
Y2/Y20
Y2/Y20
-
Only
radiator
4-pipe
Heating valve
Cooling valve
-
-
Y1/Y10
N/A
Y1/Y10
-
4-pipe with electric
heater
Heating valve
Cooling valve
Electric
heater
-
Y3/Y30
N/A
Y3/Y30
Only
electric
heater
2-pipe/2-stage
1
st
H/C
2
nd
H/C
-
-
Y1/Y10,
Y2/Y20
N/A
-
-
4-pipe/2-stage
1
st
H
1
st
C
2
nd
H
2
nd
C
Y1/Y10,
Y3/Y30
N/A
Y1/Y10,
Y3/Y30
-
*) If P027 = ON, electric heater in cooling mode.
Either floor temperature sensor or external room temperature sensor can be used.
This function increases the comfort in the room by keeping the supply air
temperature of the fan coil unit between the selected minimum and maximum
temperature limits.
If the supply air temperature exceeds a limit, the thermostat reduces the
corresponding valve position until the supply air temperature is back in the limits.
Floor temperature
limitation function (P252)
Recommended values for
P252
Note
Supply air temperature
limitation (P063, P064)
Note