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3062878_201707
10. Operating level 2
Filter check
FT-01
DISPLAY
SELECTION
Esc BACK
Interval:
Time:
028 days
05:00
Filter monitor
The filter is monitored for contamination.
For systems with single stage fans, a message is issued (filter dirty) when the contact
is open. The system continues to operate.
For systems with variable speed or multi-stage fans, the fan is switched to a
predefined speed or stage at a time that can be freely selected. A message is
displayed (filter dirty) if, during this time or during controlled operation, the contact
opens. After 30 s, the system continues to operate under normal control.
If the system has stopped at that time, the filter test will be carried out when the
system starts again (exception if a special operating mode is enabled).
Parameter
Setting range
Factory setting
Interval
1 - 365 days
28 days
Time
0:00 - 23:59 h
5:00 h
Fan stage
1 - 3
2 - 3
Fan speed during filter test
20 - 100 %
100 %
Alarm delay
Filter monitor
0 - 30 s
10 s
Frost protection
FS-01
DISPLAY
SELECTION
Esc BACK
Restart
automatic
Frost protection
The frost protection function prevents damage to the heater bank at low outside
temperatures. In addition to monitoring via the frost stats, the supply air is also
checked for a drop below the set value.
A parameter enables the pre-selection as to whether, following a frost protection
function, the system should restart automatically or only after the corresponding fault
message has been acknowledged.
Frost thermostat:
The frost protection function remains active as long as the contact is open. The
system shuts down if automatic restart has been selected and the frost stat
repeatedly responds within an adjustable time frame.
In any case, a fault message will be displayed and remains visible until it has been
acknowledged.
Frost protection via supply air temperature:
The frost protection function is active for an adjustable time. The system shuts
down if automatic restart has been selected and the supply air limit is not repeatedly
reached. In any case, a fault message will be displayed and remains visible until it
has been acknowledged.
The frost protection function is always active (even if the system is in standby mode).
Parameter
Setting range
Factory setting
Restart
After
acknowledgement /
automatic
Automatic
Frost thermostat auto. restart repeats
2 - 10
5
Within
20 - 180 min
30 min
Frost prot. above vent. air temperature
Yes/No
No
Limits
0 - 10 °C
6.0 °C
Runtime
1 - 99 min
5 min
Frost protection above supply air
temperature, automatic restart repeats
2 - 10
5
Within
20 - 180 min
60 min
