Download Siemens RDG400KN Technical data

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").
Radiator, active in
cooling mode
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).
Floor heating
The radiator sequence can also be used for floor heating.
The "Floor temperature limitation function" is described on page 26.
Sequences
2-position radiator / floor heating
H
Changeover air
Y
XpC
C
max
Vmax
100%
H
XpC
XpH
Vmax
YV
min
Vmin
0%
YV
Vmin
0%
TR [°C]
Y
TR [°C]
Y
XpR
SDR
ON
100%
YR
OFF
Y
TR
W
H
C
YV
YR
C
min
100%
Changeover air
XpH
max
Y
Modulating radiator / floor heating
YR
W
dz
Output signal
Room temperature
Effective setpoint Comfort
Heating sequence
Cooling sequence
Volume flow rate
Radiator / floor heating
0%
TR [°C]
XpH
XpC
Vmin
Vmax
W
dz
TR [°C]
Proportional band heating
Proportional band cooling
Minimum volume output
Maximum volume output
35 / 78
Siemens
Building Technologies
RDG400KN Basic documentation
Functions
CE1P3192en
20 Jul 2010