Single-Duct With Radiator Or Floor Heating - Siemens RDG400 Basic Manual

Single-duct with radiator
or floor heating
Note:
Floor heating
Sequences
Note:
Setting the sequence and the control outputs
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Siemens
Building Technologies
4.7.6

Single-duct with radiator or floor heating

On single-duct applications with radiator or floor heating, the thermostat controls a
valve plus an electric 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 4.6 for details).
The air flow starts to rise when the acquired room temperature is above setpoint
plus dead zone.
The radiator receives an ON command when the acquired room temperature drops
below setpoint (= setpoint for radiator).
"Setpoint for radiator" is limited by parameter "Maximum heating setpoint" (P10).
The radiator sequence can also be used for floor heating.
The "Floor heating limitation function" is described on page 16.
On/Off radiator/floor heating
Y Output signal
TR Room temperature
W Effective setpoint Comfort
H Heating sequence
C Cooling sequence
YV Volume flow rate
YR Radiator/floor heating
The diagrams show the PI controller's proportional part only.
Refer to section 4.5, 4.7.1 and 4.7.3 for details.
RDG400 Basic Documentation
Modulating radiator/floor heating
XpH Proportional band heating
XpC Proportional band cooling
Vmin Minimum volume output
Vmax Maximum volume output
SDH Switching Differential Heating
CE1P3182en
2015-05-20