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RTU Open 25
Wiring diagram for #33ZCSENCO2:
Wiring diagram for #33ZCT55/56CO2:
Wiring an Outdoor Air Quality sensor
Part #33ZCSENCO2 (Display model)
An outdoor air quality (OAQ) sensor monitors outside air carbon dioxide levels. The RTU Open uses this
information, in conjunction with a CO2 sensor, to adjust the outside air dampers to provide proper ventilation.
An OAQ sensor is typically duct-mounted in the outside air stream. Duct installation requires an Aspirator Box
Accessory (Part #33ZCASPCO2).