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RT-SVX20A-E438
Mounting the duct-mounted CO2
sensor
1. Select a proper location on the
duct to mount the CO
2 sensor.
2. Drill a 22-25 mm hole in the
mounting surface for sensor
insertion (Figure 19).
3. Attach the mounting plate to the
duct wall with four screws.
4. Insert the sensor through the
mounting plate, adjusting the
depth for optimal air sensing.
Figure 19 - Duct-mounted CO
2
sensor
diameter
1
5
/8 in. (42 mm)
7
/8 in. (22 mm)
1
5
/8 in.
(42 mm)
CO2 sensor maintenance
This CO
2 sensor has excellent This
CO2 sensor has excellent stability
and requires no maintenance. In
most environments the
recommended calibration interval is
five years. A trained service
technician can use a portable CO
2
meter to certify sensor calibration.
If, when checking the sensor, the
reading differs too much from the
reference value, the sensor can be
recalibrated in the field. A
calibration kit, software, and
calibration gases are required. If
certified accuracy is required, the
sensor must be calibrated against
accurate and traceable calibration
gases in a laboratory. Consult Trane
BAS for further details.
Figure 20 - Duct-mounted CO
2
sensor insertion depth
2
1
/2 in. (64 mm) 3
1
/8 -5
1
/2 in. (80 - 140 mm)