Fancom Lumina 35 Installation Manual

Lumina 35 Explanation control functions4Part of the ventilation demand can be met using natural ventilation. During natural ventilation the fans are off. Theoutside wind provides the air flow through the house. The entire combi-table is deactivated in the naturalventilation phase.Outside the natural ventilation range, ventilation is controlled using the fans. The inlets are openedbased on the values in the combi-table.Figure 2: Ventilation graph with transition phasesTransition Power ventilation → Natural ventilation (1)At a rising temperature and when the Natural start (1) is reached, the control computer switches to naturalventilation. To prevent toggling the system must have been out of the natural phase for a certain time beforesystem returns to the natural phase again. The control computer opens the curtain, then switches the fans off.The control computer controls how far the curtains open based on the minimum natural inlet settings.Transition Natural ventilation → Power-Tunnel ventilation (2)If the temperature continues to rise the control computer switches over to mechanical ventilation when the air inletis fully opened (curtain opened to maximum) and the temperature rises above Natural stop (2). The inlets fornatural ventilation (curtains) are closed, if required. The inlets for mechanical ventilation are opened based on thevalues in the combi-table. The required fans are activated.Transition Power-Tunnel ventilation → Natural ventilation (2)With falling temperatures the control computer switches over to natural ventilation when the temperature fallsbelow the position Natural stop (2). The curtains are opened to maximum position. Then the fans are switched off.To prevent toggling the system must have been out of the natural phase for a certain time before system returnsto the natural phase again.