Basic Documentation

224/332
Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Sustained mode (basic type A) 03.10.2011
19.2.1 Setpoint for switch on/off of plant during sustained
mode (Precomfort)
Controller 1 as room temperature controller
Switch-on criteria for sustained mode: Switch-off criteria for sustained mode:
Room temp <
Precomfort heating setpoint
Room temp >
Precomfort heating
setpoint + 1K
Room temp >
Precomfort cooling setpoint
Room temp <
Precomfort cooling
setpoint - 1K
Recommended setting for Precomfort setpoints to reach the switch-off criteria:

Precomfort heating setpoint < Comfort heating setpoint - 1K

Precomfort cooling setpoint > Comfort cooling setpoint + 1K
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Controller 1 > Room setpoints >
Operating line Factory setting
Precomfort cooling setpoint 28 °C
Precomfort heating setpoint 19 °C
Controller 2 and 3 as universal controller
Switch-on criteria for sustained mode: Switch-off criteria for sustained mode:
Main contr var <
Precomfort setpoint low
Main controlled variable >
Precomfort setpoint low + x%
1)
Main contr var >
Precomfort setpoint high
Main controlled variable <
Precomfort setpoint high – x%
1)
Recommended setting for Precomfort setpoints to reach the switch-off criteria:

Precomfort setpoint low < Comfort setpoint low – x%
1)

Precomfort setpoint high > Comfort setpoint high + x%
1)
1)
x% is calculated from the set setpoint * 0.05
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Controller 2...3 > Setpoints >
Operating line Factory setting
Precomfort setpoint high
28 °C, 80%, 12 g/kg, 50 kJ/kg, 1000 W/m2,
15 m/s, 100 bar, 1000 mbar, 1000 Pa, 1500
ppm, 100, 1000
Precomfort setpoint low
19 °C, 20%, 4 g/kg, 0 kJ/kg, 200 W/m2,
0 m/s, 0 bar, 0 mbar, 0 Pa, 0 ppm, 0
Setting values
Setting values