NOTE: The two-wire sensor is not polarity sensitive.
3. Plug the conduit with sealant to prevent air infiltration.
4. Swing the door closed until securely latched.
5. If desired for added security, install the two (provided) screws in the door's integrated screw tabs.
6. Connect the sensor's signal wire to UI4 on the controller.
7. Connect the sensor's ground wire to GND (next to UI4) on the controller.
Connecting the Return Air Temperature Sensor
NOTE: Use 18 to 24 AWG shielded wiring for all connections. Do not locate the device wires in the same
conduit with wiring used to supply inductive loads such as motors.
1. Feed the wire that will go to the AFMS controller through the bottom hole (if applicable).
2. Make connections to the two wire leads with either butt-splices or solder. (Using wire nuts is not
recommended.)
NOTE: The two-wire sensor is not polarity sensitive.
3. Plug the conduit with sealant to prevent air infiltration.
4. Swing the door (if applicable) closed until securely latched.
5. If desired for added security (and if applicable), install the two (provided) screws in the door's integrated
screw tabs.
6. Connect the sensor's signal wire to UI5 on the controller.
7. Connect the sensor's ground wire to GND (next to UI5) on the controller.
Connecting the Mixed Air Temperature Sensor
NOTE: Use 18 to 24 AWG shielded wiring for all connections. Do not locate the device wires in the same
conduit with wiring used to supply inductive loads such as motors.
1. Feed the wire that will go to the AFMS controller through the bottom hole.
2. Make connections to the two wire leads with either butt-splices or solder. (Using wire nuts is not
recommended.)
NOTE: The two-wire sensor is not polarity sensitive.
3. Plug the conduit with sealant to prevent air infiltration.
4. Swing the door closed until securely latched.
NOTE: If desired for added security, install the two (provided) screws in the door's integrated screw tabs.
5. Connect the sensor's signal wire to UI6 on the controller.
6. Connect the sensor's ground wire to GND (next to UI6) on the controller.
TrueFit Airflow Measurement System Installation Guide
16
925-019-05C
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