Bus Window Contact and Presence Detector
You can also include the value from the window open detector and the presence detector as a parameter in the operating mode changeover settings.
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FCU controller  |
Window contact input function |
Enable |
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Delay for window contact |
0 – 65535 s |
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Controller mode for open window |
Economy mode Frost/heat protection |
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Use bus presence detector |
Enable/Disable |
Window Contact
Use bus window contact function is useful when the heating or air conditioning is on and the user leaves the window open. This commonly happens in hotels, for example.
A Window contact object can also inform you in the event of an unusual situation - for example, if a window is broken.
The setting Delay for window contact allows you to set the delay interval after which the window is considered open.
A user needs to call someone on the street from a window or release an insect. That’s usually a matter of a few seconds.
If they manage to open and close the window during the preset delay interval, nothing changes.
However, if the opening time exceeds the delay interval, the window is considered open and the Window contact object sends “1” which activates preset mode (ECO mode, antifreeze mode or power off).
Bus Presence Detection
You can set that comfort mode triggers when somebody enters the room. When the person leaves, the original mode is restored. If there is a bus/manual mode adjustment during the presence period, it does not return to the previous mode state after leaving.
Room setting: Economy mode
Person enters the room → Comfort mode
Person leaves the room → Economy mode
Person enters the room → Comfort mode
Person manually switches to Standby.
Person leaves the room → Device remains in Standby → Timer triggers Economy mode → Device switches to Economy mode.