11
SYSTEM OVERVIEW
inVENTer PAX standard set
•
Installation and operating instructions
Setting the relative indoor air humidity (Dehumidification)
The ventilation unit can reduce excessive humidity to a specifi ed level in enclosed spaces.
Dehumidification can be set to 9 levels between 40 and 88 % indoor air humidity. The selected
dehumidification level is displayed on the main module’s user interface by a status indicator.
Each of the status indicators displays one third of the range between 40 and 88 % indoor air
humidity. Each level changes the sensitivity of the humidity sensor by 6 %.
When the selected humidity level is reached, the ventilation unit switches to extract air mode
with maximum airflow. If humidity falls below the set value again, the ventilation unit initially
continues to operate for 20 min in extract air mode with maximum airfl ow to stabilise the indoor
air humidity level. It then switches back to normal mode with heat exchange.
Relative humidity is higher both indoors and outdoors during the summer months.
To prevent the ventilation unit switching to extract air mode in the event of elevated humidity,
the dehumidification level (percentage indoor air humidity) should be increased.
Operating modes
The ventilation unit inVENTer PAX provides four operating modes. Functional scope within the
operating modes depends on the outside temperature.The following list provides an overview of
the possible operating modes and the ventilation unit’s functionality at different temperatures.
Mode
Outside temperature [°C] Functionality
Normal
35 to -15
Continuous operation with heat exchange.
-15 to -20
Extract air mode.
-20 to -30
Extract air mode with air flow rate of 30 m³/h.
below -30
Standby. Exhaust air outlet and outdoor air inlet
closed.
Summer
1)
≥ 10
Increased comfort in summer-time.
If Mode Summer is on and the outdoor air is 4°C
colder than the exhaust air, the supply air stops
and the unit only works with exhaust air.If the out-
door temperature falls below 10°C Mode summer
is deactivated automatically and the ventilation
unit works in Mode Normal.
Eco
35 to -20
Continuous operation with heat exchange and
minimal supplementary heating to prevent icing/
condensation.
-20 to -30
Extract air mode with airflow rate of 30 m³/h.
below -30
Standby. Exhaust air outlet and outdoor air inlet
closed.
Comfort
18 to -20
Continuous operation with heat exchange and
supplementary heating to keep the supply air
temperature above 18 °C.
-20 to -30
Extract air mode with airflow rate of 30 m³/h.
below -30
Standby. Exhaust air outlet and outdoor air inlet
closed.
1)
For optimal function of this operating mode we recommend an external air supply.
