CO2 Sensor
Recommended Wire
Analog input wire must be 18-gauge shielded control wire, 3 conductors
Sensor Information
Trane offers two versions of CO2 sensors:
- Duct Mount X13790423010 or SEN03074
- Wall Mount X13790422010 or SEN01564
Both sensors utilize the same internal circuit board and connection and only differ in their mounting and sensor pickup location. Both are capable of 0-10vdc, 2-10vdc, 4-20mA with a range of 0-2000ppm. For all Symbio 700 and ReliaTel installations, 0-10vdc is utilized.
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Sensor Wiring
For Symbio 700 and ReliaTel applications, the following terminals are used:
- 24v
- GND
- OUT (older sensors may show OUT1 or OUT V)
Symbio 700 Connections
The CO2 connection on the Symbio 700 is at the bottom right corner on J22:
Drain wire can be connected on J22-3 with the ground wire.
ReliaTel Connections
The CO2 connection on ReliaTel units are on LTB2:
Drain wire can be connected on LTB2-14 with the ground wire.
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.