Input 2 (I2) - Mixed Air Temperature Wiring - Johnson Controls NXA-FCU-01 Installation Manual

Installation Guide

INPUT 2 (I2) - MIXED AIR TEMPERATURE WIRING

Input 2 must be wired to the Mixed Air Temperature. Wiring for I2 is shown
in Figure 9. To wire I2 to a thermistor:
1. Select the correct jumper setting for a thermistor on J8.
2. Connect one lead of the thermistor to input terminal I2 on terminal
block J2.
3. Connect the other lead to one of the GND terminals.
NOTE: Only a 10K Type II (CP Curve) thermistor may be used.
Figure 9. I2 - Thermistor Wiring.
16
FCU Controller
I6 GND I5 I4 GND I3 I2 GND
J2
I1 VOUT
THERMISTOR