22
CO
2
sensor
If there is a large load change in the home / building, it is advantageous to install a CO2 sensor to control the air exchange.
The CO2 sensor measures the CO2 level in the exhaust air, and regulates the ventilation level accordingly.
The CO2 sensor is mounted in the unit as illustrated below:
1. Demount the front plate
a: Loosen the thumb screws and remove the filter change
cover.
b: Lift up the large door and remove it. Detach the RJ12 plug
from the control panel on the rear side of the large door.
2. Remove the screws and demount the cover plate.
3. Remove (pull out) the T4 sensor in the heat exchanger. 4. Remove the heat exchange by pulling the strap
(do nut cut the strap).
5. Mount the CO2 sensor in the metal shelf underneath the
filter of extract air, using self-threading screws (included in
the CO2 sensor kit).
6. Run the wire from the CO2 sensor through the cable
grommet to the automation.
Mount the power supply box in the box for automatic
(pre-drill 2 holes for the screws included in the CO2 sen-
sor kit).
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