How to install a 15k BTU air conditioner on an RV

Connect the RV air conditioner to a dedicated circuit that meets local wiring codes. Locate the power cord inside the RV and securely connect the active, neutral, and ground wires to prevent shorts or overheating.

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.

To install the plenum mounting bracket, align the M8 bolts with washers and metal clamping bars through the four corner holes. Push the bracket upward into the square roof opening and tighten the bolts evenly until the bracket is secure and fully seated.

Place the outdoor AC unit over the roof opening and gasket, making sure the four mounting bolts align with the corners of the 14 ¾ × 14 ¾-inch hole. Set it down gently without sliding to avoid damaging the gasket or causing air and water leaks.

The air conditioner should be centered on the roof and installed facing the same direction your RV travels. Leave at least 6 inches of clearance on each side, 8 inches at the front and back, and 2 inches of height space for proper airflow.

The ducted air conditioning system comes with the outdoor unit, plenum assembly, filters, and all the hardware needed for installation. Optional accessories like a remote or wall controller may also be included depending on the setup.

The air flow separation baffle is a divider that keeps the cold air supply and warm air return separated inside a ducted RV air conditioner. It needs to be trimmed to the ceiling height and inserted into the plenum bracket slot to direct airflow correctly.

Connect the RV air conditioner to a dedicated power circuit that can be shut off and meets local wiring codes. Inside the RV, locate the power cord and connect the active, neutral, and ground wires securely to prevent loose connections or shorts.

Attach the outlet air duct to the base of the outdoor RV air conditioner from inside the vehicle using four truss head screws. Make sure the duct is positioned with the correct side facing down and that the markings for direction are aligned before tightening the screws.

Apply the self-leveling RV roof sealant in a continuous ring around the roof opening before mounting the unit. If your model doesn’t include a pre-installed outlet gasket, attach it to the roof first, press it down firmly, and then seal around it to prevent leaks.

The RV roof must be strong enough to hold 88 pounds and remain level without collecting water. Around the 14 ¾-inch opening, wood framing at least ¾ inch thick should be added to support the air conditioner and prevent roof crush.

The box includes the main outdoor air-conditioning unit, the plenum assembly for inside the RV, and all necessary mounting hardware and filters. Everything needed for a standard installation, bolts, brackets, gaskets, and screws, is included.