Navien NR-180(A) Operation & Installation Manual page 54

- The diagram above displays the master unit and slave unit connected with the ready link
commnication cable
- The Dip SW6(KDC-324-xM PCB Board), which is used only for organizing cascade system,
Is to be switched Down if the corresponding unit is the first or the last unit of Cascade
connection.
- The recommended location for the master unit is in the center.
Step 4: Communication set-up
After the cable connections and DIP switch set-up, the communication set-up should be done.
Master set-up
After the power ON, each FND1 will display on the PCB as below:
FND1 display: Master set-up
54