The zone bus terminal block is a gray, removable, 4-terminal plug that fits only into the black, board-mounted, zone bus jack. Wire the removable zone bus terminal block plugs on the ZEC510 and other zone bus controllers in a daisy-chain configuration using 3-wire twisted, shielded cable, as shown in Figure 1 and Figure 2.
Figure 1. Zone bus terminal block wiring
Figure 2. Zone bus daisy chaining configuration
| 1 | Terminating device on the zone bus |
| 2 | Zone bus terminal block plug on the terminating device |
| 3 | Daisy-chained device on a zone bus segment |
| 4 | Zone bus terminal block plug on the daisy-chained device |
| 5 | Cable shield connection |
| 6 | Connects to the next device on the zone bus. Connects to all ZECs and the zoning roof top unit (RTU) of the VZC100. |