Digital Outputs Do4 And Do5 - Heating Inc/Dec Or Stage 1/2 Wiring - Johnson Controls NXA-FCU-01 Installation Manual

Wiring for the Cooling Stage 2 is shown in Figure 18. To wire DO3 for
Cooling Stage 2:
1. Connect the HOT terminal to one side of the pilot relay's coil.
2. Connect the DO3 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 18. DO3 - Cooling Stage 2 Wiring.
DIGITAL OUTPUTS DO4 AND DO5 - HEATING INC/DEC
OR STAGE 1/2 WIRING
NOTE: The rating for this output is 0.5 amps at 24VAC.
Digital outputs 4 and 5 must be wired to the Heating Increment/Heating Stage
1 and the Heating Decrement/Heating Stage 2.
FCU Controller
HOT DO5 DO4 HOT DO3 DO2 HOT
Installation Guide
DO1 AO1 AGND
COMPRESSOR
OR
VALVE
25