3
Room unit
A person in the room can control the room's HVAC behaviour by using a room unit that is connected to the
controller. A room unit, depending on the model, lets the person in the room:
✓
Put the room HVAC system in a comfort or energy saving mode
✓
Perform a setpoint adjustment
✓
Improve the air quality in the room through a temporary increase in airflow
✓
Select a fan speed
✓
Turn the room lighting on or off
✓
Control sun blinds
Room unit models with display can be used to perform basic controller configuration, see section
, as an
alternative to using Application tool.
A room unit, depending on the model, is also used to provide status information to the person in the room
regarding:
✓
Controller state
✓
If the controller is heating or cooling
✓
Room temperature
✓
CO
2
level in room
✓
Setpoint adjustment
✓
Fan speed
✓
If a window is open
✓
If a sun blind is out
✓
If the room lighting is on
✓
Relative humidity level in room
✓
Outdoor temperature
3.1 Model overview and user interface description
The controller supports various Regin ED-RU... room unit models, that is, room units with or without:
✓
LEDs or display
For providing status information.
Models without display are equipped with LEDs that indicate the current controller state, and if the
controller is heating or cooling. For models with display, all types of indications are provided in the
display.
✓
Occupancy (on/off) button
For putting the room HVAC system in a comfort or energy saving mode, see section
, or for
improving the air quality in the room through a temporary increase in airflow (if forced ventilation is
activated, see section
✓
Up/down buttons or knob
For performing a setpoint adjustment.
✓
Fan speed button or switch
For selecting a fan speed. That is, auto speed or manual (off, low, medium, or high) speed.
Regio
Eedo
manual, Rev. D
47