Single Duct With Radiator Or Floor Heating - Siemens RDG400KN Basic Documentation

Radiator, active in
cooling mode
Floor heating
Sequences
Siemens
Building Technologies
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 flow 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-position radiator / floor heating
Y
Changeover air
XpH
H
100%
Vmax
Vmin
0%
Y
SDR
ON
YR
W
OFF
dz
Y Output signal
TR Room temperature
W Effective setpoint Comfort
H Heating sequence
C Cooling sequence
YV Volume flow rate
YR Radiator / floor heating
RDG400KN Basic documentation
Functions
Modulating radiator / floor heating
Y
XpC
C
H
100%
Vmax
YV
Vmin
0%
TR [°C]
Y
100%
0%
TR [°C]
XpH Proportional band heating
XpC Proportional band cooling
Vmin Minimum volume output
Vmax Maximum volume output
Changeover air
XpC
XpH
YV
TR [°C]
XpR
YR
W
dz
TR [°C]
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