Pete, A couple of things:
stopped manufacturing trailers in 1982, so yours is likely not a 1984. You can compare your serial number to this list to help determine your correct year:
- The furnace in Trilliums was originally what is known as a gravity furnace. These were installed below the sink in 1300's and below the closet on 4500's. They are basically a fire in a box. No electrical
requirements, low efficiency, high surface temperature. Around 1979 they were considered a fire hazard. I have not heard of any fires from this, but it must have happened for them to be banned. In the 1300's they replaced them with a Coleman 4312:
One of these in a Trillium
can be seen in the following link:
As you can see there were several modifications to the fibreglass. Some have said that the closet looks pregnant.
In the 4500's I have seen several different forced air furnaces installed in the curb side seat of the dinette. I can't figure out why that was not done with the 1300's