Regin Regio Maxi, Manual

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Part III
Configuration
Chapter 12 Fan control
In room units for fan control (RU-F-models) it is possible to control a fan at the following
speeds: Off, Low speed, Medium speed, High speed, Auto. The fan speed in the Auto
position depends on the controller output signal and the settings for each speed.
Manual control
The fan can be manually controlled to work at any speed. On RU-models with display, you
press the fan button once and a fan symbol is lit for 10 seconds in the display. As long as the
symbol is lit, you can change the fan speed with the INCREASE/DECREASE buttons. RU-
models without display have a fan switch.
Figure 13. Fan button on room units with display Figure 14. Fan switch on room units without display
The controller has the following positions:
Auto
= Automatic control of the fan speed to maintain desired room
temperature
0
= Fan off
I
= Manual position with low speed
II
= Manual position with medium speed
III
= Manual position with high speed
Manual setting of speed I-III means that the speed of the fan in operating modes Stand-by,
Occupied and Bypass is always the set speed. In the other operating modes, the fan is
demand controlled.
Auto control
In auto mode, you can configure if the fan should be controlled by the heating output, the
cooling output, or both the heating and cooling outputs. When the selected output exceeds
the start value that has been set for each speed (FS speed 1=20%, speed 2=60%, speed
3=100%), the fan is activated. It stops when the controller output signal drops below the set
value minus the set hysteresis (FS=5%).
When the fan speed changes, there is always a minimum delay (2-3 s) between the
inactivation of the output for the current speed and the activation of the output for the new
speed. Only one fan speed output is defined at a time.
Select button
For room units with a Select button it is also possible to set the maximum speed in the auto
position: Auto 1, Auto 2 or Auto 3. Auto 1 means that the maximum speed is 1, Auto 2 that
the maximum speed is 2 and so on.
Off/Unoccupied
In operating modes Off and Unoccupied, the fan is stopped, regardless of the position of the
fan switch or the setting in the display, on condition that the temperature is within the set
temperature limits. If the temperature is not within the set temperature limits, the fan will be
started in the corresponding Auto position, regardless of the settings.