Check the amperage of the electrical supply in your RV. You need 20-amp service in the RV to convert to a waterless system.
Empty the black water tank and thoroughly clean it with a bleach and water solution. Empty the freshwater tank. Do not use any water in the RV until after the toilet replacement is complete.
Park the RV and open the cap to the black water tank. Enter the RV and remove the toilet. There should be a few screws holding it in place. Lift the unit up and off of the mounting brackets. Unscrew the mounting brackets and remove everything from the unit. You may need to cut plumbing with a PVC pipe cutter or saw.
Remove the black water tank. Slide under the RV, remove the screws holding the support brackets with a cordless drill. Remove the support brackets and the tank should drop down. Check that your RV has a separate black water and gray water tank. Smaller RVs may have one tank for both. If you have only one tank, do not remove it.
Install the new toilet. If installing a composting toilet; install the mounting brackets, attach the toilet, hook up the fan to the electricity, add peat moss and you are done. If installing an incinerating toilet; install the mounting brackets, cut a hole for the vent, run the 20-amp electrical hookup to the unit, attach the unit to the mounting brackets, run the vent to the outside of the RV, and test to see that it is operating correctly.
