sauter NRT407, Manual

Page: 32 / 76

32 Part III Configuration NRT407 manual
Chapter 8 Operating modes
Different operating modes
NRTcontrollers have the following operating modes:
•
0 = Off
•
1 = Unoccupied
•
2 = Stand-by
•
3 = Occupied (FS)
•
4 = Bypass
Off
Operating mode Off means that the controller is not heating or cooling, and the fans are
stopped. However, the temperature must not drop below the set minimum temperature
(FS=8°C). If it does, the controller will start heating, and (if a fan is used) start the fan
whether it has been manually stopped or not.
For controllers with display the background lighting is not lit, and only OFF is shown in the
display.
Unoccupied
Operating mode Unoccupied means that the room where the controller is placed is not used
for an extended period of time, for example during holidays or long weekends. Both heating
and cooling are disconnected and the fans are stopped within a temperature interval with
configurable min/max temperatures (FS min=15°C, max=30°C).
For controllers with display the background lighting is not lit, but the current room
temperature (or setpoint depending on the configuration) is shown in the display. OFF is also
shown in the display.
Stand-by
Operating mode Stand-by means that the room is in an energy save mode and is not used at
the moment. This can be during nights, weekends, evenings etc. The controller is prepared to
change operating mode to Occupied (comfort) if someone enters the room (presence). The
room temperature is controlled around the applicable heating and cooling setpoints, with an
extended temperature interval (FS=+/-3°C). For example, if the heating setpoint=22°C and
the cooling setpoint=24°C, the controller will allow the temperature in the room to be
between 19°C and 27°C. The setpoints can also be ad/- 3°C via the setpoint knob or
the display.
For controllers with display the background lighting is lit (dimmed). STANDBY and the
current room temperature (or setpoint depending on the configuration) are shown in the
display.