Analog Output - Johnson Controls NXA-FCU-01 Installation Manual

Installation Guide
Wiring for the Heating Stage 2 is shown in Figure 21. To wire DO5 for
Heating Stage 2:
1. Connect the HOT terminal to one side of the pilot relay's coil.
2. Connect the DO5 terminal to the other side of the pilot relay's coil.
3. Wire the pilot relay's output to the appropriate specifications for the
device.
J3
Figure 21. DO5 - Heating Stage 2 Wiring.

ANALOG OUTPUT

The analog output is located on terminal block J3 and is labeled AO1 and
AGND.
NOTE: The analog output must be used to wire a damper actuator for
mixed air dampers.
28
FCU Controller
HOT DO5 DO4 HOT DO3 DO2 HOT DO1 AO AGND
ELECTRIC COIL
OR
VALVE