1) Drill hole in the ceiling where you want the flue pipe to exit. The heater comes with a flexible, double-wall flue pipe which could be bent in Dr. Seuss fashion to conform to our curvy trailer's walls.
2)Run 12 volt power to the heater for the heater's fan = small moment of flashbacks to gutting when we had to remove the wall panel to access the wiring! We quickly replaced it.
3) Run a propane line from the propane tank to the heater (up through the floor). In the photo above, I am holding my hand-formed, very special connector piece of copper pipe.4) Rivet the heater to the wall. Airstream owners are well-accustomed to using rivets in place of screws. The aluminum panels are too thin to hold a screw. The vent cap was also riveted to the outside of the trailer in the photo above.
It was not too terribly difficult to install and has made a huge difference in our overall comfort. It heats the whole Airstream without a problem, even on the lower setting. We were worried about the heater's fan being to noisy, but it is very quiet and circulates the warm air very well.
We're pretty stoked on our little heater. Here's to a beautiful fall!