INsTALLATIoN
Settings
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ENGLISH
P14 : Supply air flow rate offset
Use this parameter to adjust the supply air flow rate during com-
missioning. The offset relates to standard ventilation. The offset
is converted internally as a percentage for the other fan stages.
Example
- Nominal flow rate (stage2) : 125m³/h
- Offset : 25m³/h
Stage
Set
flow
rate
Off-
set
Set flow rate
+ offset
Offset
factor
Internal set flow rate
= set flow rate* off-
set factor
0 50 50*1.2 = 60
1 90 90*1.2 = 108
2 125 25 125+25 = 150 150/125 = 1.2 125*1.2 = 150
3 180 180*1.2 = 216
P15 : Humidity protection interval
If you set fan stage 0, the appliance switches to a 24 hour dormant
phase. The humidity protection control unit only starts after this.
The appliance measures the humidity of the extract air for the
time set in P16. The appliance compares the last measured value
with the limit value set in P17. If the limit value is exceeded, the
appliance starts to ventilate. The appliance stops the ventilation
once the limit value is fallen below. At this point, the humidity
protection interval restarts, at the end of which the moisture is
measured.
P16 : Start-up time for humidity measurement
The appliance measures the humidity of the extract air for the time
set in P16. The appliance compares the last measured value with
the limit value set in P17.
P22 : Enable preheater
Effect
0 The internal preheater is completely deactivated.
1
The internal preheater is activated. In order to keep the heat exchanger
free from ice, the preheater ensures a minimum supply air temperature
with reference to the frost protection temperature adjustable in param-
eter P18.
While this parameter is being displayed or adjusted, the "frost
protection" symbol is shown on the display.
P24 : Passive cooling release temperature
To enable checking of the other parameters for passive cooling,
the outdoor air temperature must be no less than the value set
in this parameter.
P25 : Passive cooling blocking temperature
If the outdoor air temperature falls below this blocking tempera-
ture, passive cooling is deactivated.
P26 : Passive cooling hysteresis
To make cooling possible, the outdoor air temperature must be
lower than the extract air temperature by the value set in this
parameter.
P27 : Temperature differential for enabling passive
cooling
Use this parameter to define the temperature differential that
must be exceeded for passive cooling to be enabled. In order for
passive cooling to be enabled, the following condition must apply
for 60minutes:
P3 = 2 : Outdoor air temperature > set room temperature + P27
P3 = 3 : Extract air temperature > set room temperature + P27
P29 : Appliance type
This parameter is set at the factory. The parameter can only be set
after the controller assembly has been replaced.
P30 : Temperature for enabling frost protection
The unit only activates frost protection heating if the outdoor air
temperature drops to the value that can be set in this parameter.
P31 : Enabling of humidity-dependent flow rate
control
With humidity-dependent flow rate control, the air flow rate is
increased or decreased depending on the humidity level.
Options Effect
0 Deactivated
1 Activated
P32 : Enable outdoor air condensate prevention
If the unit is in ventilation mode and this parameter has the value
1, the unit checks the following conditions:
- Outdoor air temperature > Extract air temperature
- Extract air temperature + P33 < Outdoor air dew point
If both conditions are met, the unit switches the fans off. After
a shutdown, the unit switches on the fans cyclically and checks
whether the conditions are still valid or whether ventilation mode
can be resumed.
Interval between measurements min 60
Duration of measurement min 5
P33 : Temperature offset for condensate prevention
This parameter is used to vary the shutdown point for condensate
prevention. This allows the fans to be switched off 2K before the
dew point temperature is reached, for example.
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