10
SYSTEM OVERVIEW
inVENTer PAX standard set
•
Installation and operating instructions
2.2
Function
The inVENTer PAX ventilation system is equipped with an integral cross-flow heat exchanger.
It stores the thermal energy from the indoor air (extract air) inside the main module and uses
it to warm up the incoming outdoor air. Thus, the inflowing air is heated up before entering the
room. A heating system is switched on at very low outside temperatures in order to avoid icing/
condensation.
Heat recovery in conjunction with regulation of indoor humidity reduces air-conditioning costs.
If the outside temperature falls below –30 °C, the ventilation unit switches off automatically.
Airfl ow and humidity are regulated and the operating mode selected via the remote control or
the usert interface directly on the main module.
Setting and autocalibrating the airflow
Figure 4:
Airflow on the inVENTer PAX main module
The air flow rate can be changed in three operating levels:
•
Low airflow:
30 m³/h
•
Moderate airflow:
52 m³/h
•
High airflow:
78 m³/h
Balanced control of the air flow rates (low, moderate, high) is achieved by autocalibrating the
unit. The fan runs at maximum speed for 60 min. to stabilise the temperature. Once calibration
is complete, the settings are stored and the ventilation unit returns to the previous operating
mode. Make sure that windows and doors are closed while autocalibrating the airflow.
Note that autocalibration only is carried out fault-free, if the ventilation system is mounted
properly (each unit with its own outdoor air inlet and supply air outlet).
2
1
4
3
1 Supply air
2 Extract air
3 Exhaust air
4 Outdoor air
