18 Wiring diagrams
39
The fan is running in base load operation. Humid-
ity control is active, see Standard Switching.
Switch "S1" is used to switch manually to full load
operation. After switching full load operation off
with "S1", the fan continues in full load operation
for an overrun time of 6 minutes. If after this time,
the humidity as measured at the fan:
• is higher than the switch-off point, the fan con-
tinues to run in full load operation until the hu-
midity drops below the switch-off point. Only
then does the fan switch automatically back to
base load operation.
• is lower than the switch-off point, the fan imme-
diately switches automatically back to base load
operation.
Switching option 2: Manual base load opera-
tion
The fan is switched manually to base load with
switch “S1”. Humidity control is active, see Stand-
ard Switching. If, after being manually switched
with switch "S1", the fan is in:
• full load operation, i.e. humidity is present, the
fan continues to run until the humidity drops be-
low the switch-off point. Only then does the fan
switch off automatically.
• base load operation, the fan switches itself off
automatically.
If switch S1 is open, the fan can start up automat-
ically as a result of high room humidity.
Switching option 3: Manual full load operation
with pre-defined overrun time.