How can we ensure effective temperature regulation with calculated natural ventilation in buildings featuring Trombe wall systems?

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Hey! I'm encountering a challenge with DesignBuilder related to the calculated natural ventilation feature in buildings incorporating a Trombe wall system. Despite setting parameters to close the air vents when the indoor temperature exceeds 26°C, I'm still observing temperatures surpassing this threshold in the simulation results. How can we ensure that the calculated natural ventilation system effectively regulates indoor temperatures in such scenarios?