Install Tip: Best Practices for Fujitsu VRF System Communication Wiring

To ensure reliable communication and prevent common issues in Fujitsu VRF installations, follow these best practices:

✅ Use Conduit: Whenever possible, run the communication cable inside conduit to protect it from weather exposure and potential pest damage.

✅ Minimize Cable Length: Keep wire runs as short as possible to reduce the risk of signal loss and simplify troubleshooting.

✅ Avoid Bundled Loops: Do not leave excess wire coiled in loops, as this can create additional issues and complicate diagnostics.

✅ Follow a Clear Wiring Path:

• Daisy Chain Wiring: When connecting units, daisy chain from the outdoor unit to its connected indoor units using X1/X2 terminals.

• Outdoor Unit Connections: Daisy chain between outdoor units using Z1/Z2 terminals for streamlined communication paths.

By following these tips, you can reduce the likelihood of communication errors and simplify future maintenance.