The 24 VAC supply power terminal block is a gray, removable, 3-terminal plug that fits into a board-mounted jack on the top right of the controller.
Wire the 24 VAC supply power wires from the transformer to the HOT and COM terminals on the terminal plug, as shown in Figure 1.
Note: Do not use the middle terminal on the supply power terminal block.
Note: The supply power wire colors may be different on transformers from other manufacturers. Refer to the transformer manufacturer’s instructions and the project installation drawings for wiring details.
Figure 1. Supply power terminal block wiring
| No. | Description |
|---|---|
|
1 |
Supply power terminal block jack |
|
2 |
Supply power terminal block plug |
|
3 |
Wires from Johnson Controls 90 to 24 VAC, Class 2 power transformer |