|
Just installed a new 15K BTU Carrier on my '87 Excella and went through some of the same problems as you seem to be having. I have some of the roof deflection you describe but it didn't seem too bad so I left it as is. I had a length of the weatherstrip used on the vent covers left over and it worked perfectly to seal the gaps at front and rear of lower unit.
The opening in my roof was framed all around by aluminum I-beam but the inner skin (vinyl metal) had been sloppily cut past the edges of the beams so I used duct tape to seal it. I used shims made to square door frames in houses to shim out and level the lower unit. They are wedge shaped and about a quarter inch thick at the large end. They come in packages of 15 or 20 and cost a buck or so.
Sure is a world of difference between the 15 year old Coleman and this new Carrier. Outside unit is very quiet and inside is tolerable. It was 97 degrees outside today and my unit hit 80 deg. inside temp. Trailer is in direct sunlight all day with no shade and awnings furled.
|