This is my toybox about an hour after I picked it up
OK so I got my furnace installed.
It is an Atwood 8940 ACLC (110 AC 40,000 BTU)
I bought the heater off of EBAY. (didn't realize it was an AC model until after I bought it.) I've got an inverter so I can run it off of the generator or battery power.
I mounted it on some brackets inside mounted directly to the wall struts.
I just used a 2 1/2 hole saw and cut a hole through the sidewall. I used some prebent tubing to kick the exhaust sideways and vent it through the sidewall.
I had to get some starter flanges from STATE TRAILERS (local rv parts store, its awesome ALMOST as good as goin to a sled store) to hook up to the furnace box. It was setup for a floor duct. I made a closeoff plate and ducted it out through the sides of the case in the holes already made there. Just had to remove the round close off plates. You can see the aluminum close off plate on the left side and the starter flanges here.
I used some reducers (4" to 3") and some furnace duct 90* elbows I got at Lowes. Then I got some Plastic pipe (3") and hung it up with the white plastic carpenters strap. I used self tapping screws to hold all of the joints. (Not sure but have heard of the heat softening glue and having problems with the glued joints coming apart, so they are all screwed together)
I vented everything down to the floor and used 90* elbows to turn it and direct it across the floor. I also mounted my thermostat over by the door, that way I can reach in and turn it on without having to crawl over things to get to it. (Not too close don't want it to get a blast of cold air every time I open the door.)
I still have to make and mount some cabinets in the front. I plan on having a small tank that I can use for weekend sled trips and being able to drop the propane hose outside to be able to hookup to a big bottle for longer camping trips in the summer.
Its still a work in progress but WOW heat is nice. 40,000 BTUs will heat it up to 65* in a few minutes then it just cycles for a few minutes to keep things nice and toasty. I have a plug on the house I can keep the trailer plugged into but have a little 800W generator that will run the lights and heater. (already tried it out) I also have a bigger generator to run a fridge and everything else in the summer.
I'm open to suggestions on things if you can see where I need to improve something. So whada ya think guys?
! Start your air flow low and it miraculously heats the entire area as opposed to just the top 1/3rd. Grrr! We usually take a big mr heater and knock the immediate chill off then run our forced air until things are dried/thawed out.
