User Manual Q&AAnswer
Apr 17, 2025 - 05:15 AM
To adjust the ventilation level manually on the Zehnder Surface Mounted CO2 Sensor, follow these steps:
1. Make sure that the CO2 Sensor has been set as a controller by the installer. This will enable the manual adjustment of the ventilation level.
2. Press the operating button on the CO2 Sensor briefly to select the next function.
3. Repeat step 2 until the LEDs of the desired ventilation preset light up. There are three presets available: low, medium, and high.
4. The selected ventilation level will be displayed on the CO2 Sensor. The active ventilation setting will remain visible even when the measured CO2 level is programmed as control.
Please note that if the CO2 Sensor has been set as a sensor by the installer, it cannot be used to adjust the ventilation rate manually. In this case, the ventilation system will follow the ventilation level set by the installer based on the measured CO2 values.
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