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For a set fan control:
Fig. 20:
Fan control: CO
Fig. 21:
Fan control: RH threshold value exceeded
Exceeding of the threshold value:
If the set threshold value is exceeded, the control switches the fan to level 1.
■
If the measured value rises by a further 10%, the control switches the fan to level 2.
■
Dropping below the threshold value:
If the measured value drops below the threshold value by 10 ppm or 1% for the relative
■
humidity (RH), the control switches the fan off again after the set switch-off delay.
Level 2 is switched off immediately when dropping below the threshold value.
■
NOTE
■
■
Operating Instructions 2CKA001473B8822
threshold value exceeded
2
If the 2nd level switched on, the contact of the 1st level is switched off.
The CO
value has priority in the display.
2
–
If the CO
value is the first to drop below the threshold value, the display
2
changes to the RH value in the centre.
–
The relay remains active until both values are again below the threshold
value.
–
The entered CO
limit value has been
2
exceeded.
–
The fan switches on
automatically.
–
The entered limit value for the
relative humidity (RH) has been
exceeded.
–
The fan switches on
automatically.
Operation
│23
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