CEXT - Zone Extension Module

The CEXT is a module that clips on to the C225 module to extend the number of zones by an additional 6. So it will change a standard 8 zone system to 14 zones

1️⃣ CEXT Module: The Zone port extension modules allow the C225 module to be extended from 8 ports zone ports to 14 zone ports for larger systems with more zones

2️⃣ Zone damper ports: Connect the RJ12 (RJ11 on older systems) cables from the damper motors here. Start at zone 9 and connect sequential ports. i.e. 10,11,12. etc

3️⃣ Connection pins to C225 module: Connect the CEXT to C225 on this side. Ensure the pins are aligned with the female connector and take care when clipping modules together

4️⃣ Connection ports to C325 AC unit modules

Connect the C325 AC unit module on this side