Installing a roof mounted air conditioning unit to a camper
1. Step 1
Remove the old vent hardware. A Phillips head screwdriver can be used to remove the four screws in the bottom of the vent. This will drop the screen and allow the sliding vent door to be loosened. On the top of the RV's roof, unbolt the vent's dozen or so bolts around the outside lip of the vent. There might be roofing spackle that has hardened, preventing the bolts from being accessible. Scrape this off with a knife, then remove the bolts to free the vent. Wipe the area with cleaner.
2. Step 2
Raise the A/C unit to the roof, and install it into the hole. The surfaces around the top of the vent hole should be lined with foam sealer before letting the unit settle into place. Once the A/C is in, it should be braced with the provided bracket to the bottom of the vent hole.
3. Step 3
Splice the wiring to the A/C control panel plug. The panel is separate from the unit and has a small adapter plug with three wires coming from it. The wires--black, green and white--should be cut and spliced to the wires in the roof, then covered with a liberal amount of electrical tape.
4. Step 4
Mount the A/C control panel to the bottom of the vent opening. The bracket for the A/C unit will have screw tabs to secure the control panel and venting system to the upper half. Once this is in place, the A/C should be tested for operation.