Technical data

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Siemens RDG400KN Basic documentation CE1P3192en
Building Technologies Functions 20 Jul 2010
3.6.6 Single duct with radiator or floor heating
On single-duct applications with radiator or floor heating, the thermostat controls a
valve plus an auxiliary electrical heater. Parameter P01 is not available.
The output signal for the air flow can be limited to a minimum and maximum value
if required (see section 3.5 "Additional features").
The air flo
w starts to rise depending on the acquired room temperature, the current
supply air temperature (if available) and the setpoint.
The radiator receives an ON command when the acquired room temperature drops
below setpoint (= setpoint for radiator).
Note: “Setpoint for radiator” is limited by parameter “Maximum heating setpoint”
(P10).
The radiator sequence can also be used for floor heating.
The "Floor temperature limitation function" is described on page 26.
2-po
sition radiator / floor heating Modulating radiator / floor heating
Y
YR
TR [°C]
dz
max
min
Y
0%
100%
TR [°C]
XpC
YV
C
H
Vmin
Vmax
XpH
ON
OFF
W
SDR
Changeover air
Y
0%
100%
YR
TR [°C]
XpR
W
dz
max
min
Y
0%
100%
TR [°C]
XpC
YV
C
H
Vmin
Vmax
XpH
Changeover air
Y Output signal
TR Room temperature
W Effective setpoint Comfort
H Heating sequence
C Cooling sequence
YV Volume flow rate
YR Radiator / floor heating
XpH Proportional band heating
XpC Proportional band cooling
Vmin Minimum volume output
Vmax Maximum volume output
Radiator, active in
cooling mode
Floor heating
Sequences