12
PU SENS 01
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10. Extra options
• Select the EXTRA OPTIONS item in the Engineering menu and press
ENTER
.
• HEATING CONTROL activates heater operation.
Before activating the HEATING CONTROL MODE turn off the SUPPLY
FAN OFF MODE by selecting the OFF button.
• The SUPPLY FAN OFF MODE activates the heat exchanger freeze
protection and can only be activated when the HEATING CONTROL
option is OFF.
To activate the heat exchanger freezing protection function by means of
the supply fan deactivation set the HEATING CONTROL parameter value
to OFF.
To proceed to the mode settings set the SUPPLY FAN OFF MODE
parameter to ON.
• HUMIDITY SENSOR SELECTION - selection of the humidity sensor for
controlling the unit.
1 — the sensor is installed in the extract air duct.
2 — the sensor is installed indoors.
• BYPASS OPERATION MODES:
1 — automatic mode for set temperature maintenance and freeze
protection.
2 — manual mode for positive air damper opening for natural ventilation.
The Summer Bypass only works for outdoor temperatures over 10°C
WARNING: It is not recommended to use the manual bypass mode (2)
during the winter period to prevent room overcooling.
Only AUTO mode (1) should be used during the winter period.
• To save the changes and return to the Engineering menu press
.
20
5
+3
• If the SUPPLY FAN OFF MODE parameter is set to ON the control panel
switches to the SUPPLY FAN OFF MODE setting.
• Select an item by touching the respective field: WORKING HOURS,
DOWNTIME and SWITCH-OFF TEMPERATURE (the temperature is set
according to the outdoor temperature sensor readings defined in the range
from +10 °C to -20 °C).
• Then use
and to set the desired value.
• Press ENTER
to confirm the set parameters.
• To return to the Engineering menu without saving changes press
EXIT
.
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