Version 5.2_2022 (January 26, 2022)
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11.12.
Other functions
11.12.1.
Indicator lights connected to digital output
Dirty filter indicator light (orange)
At Delta-P, the filter must be replaced. When the pressure drop is too high, the contact opens. After a delay
of 60 seconds, the orange light on the control panel will come on. When the contact is closed again, the
alarm will disappear after 60 seconds.
Error light (red)
All faults (except for dirty filter) are indicated by a red light and cause the unit to switch off.
Status light (green)
The status light is lit when the unit is ON. When an urgent fault occurs, the error light goes on and the status
light goes off. The AHU is switched off until the fault has been remedied. In case of a non-urgent fault, the
status light does not go off.
Defrosting light (same output as defrosting light)
The light comes on when defrosting is activated
11.12.2.
Supply air sensor - Automatic selection
Supply air temperature sensor (internal / external)
The internal temperature sensor is mounted in the space between the fans and the outlet. It should be
possible to connect a second temperature sensor via a connector from the outside of the AHU and replace
the internal temperature sensor in the AHU. So when the sensor is connected, the software automatically
changes the procedure to the external temperature sensor.
11.13.
Menu settings <<Programming>>
11.13.1.
Fan
The Ramp-up and Ramp-down time can be set for each fan (F01-F04). It is also possible to set the direction
to the left/to the right:
11.13.2.
Belimo
The operation of the Belimo (0-10V) is based on a PI controller. The PI controller is controlled by the supply
air temperature and the setpoint. The settings for the controller are as follows:
