How do you install the plenum assembly for an RV air conditioner?
Connect the control cable between the rooftop unit and the plenum assembly, matching the wire colors. Then attach the plenum to its mounting bracket, secure it with the provided screws, and reinstall the return air filters to finish the installation.
Connecting the Control Cable
Start by connecting the control cable between the rooftop unit and the plenum assembly. Make sure the wire colors match on both connectors before locking them together.
Attaching the Plenum Assembly
Press the plenum assembly onto the mounting bracket until you hear four clicks. That sound confirms the plenum is fully engaged.
Securing the Assembly
Use the four provided pan head tapping screws to secure the plenum assembly to the bracket.
Remove the return air filters and use four countersunk head tapping screws to fasten the plenum assembly to the ceiling.
Reinstall the filters into their slots once the assembly is secure.
Final Adjustments
The installation is now complete. Adjust the louvers by tilting the blades to direct airflow where needed. Both sides move together, ensuring even air distribution throughout the RV.
Corky Lorenz
November 6, 2025