there are all sorts of pds and info for this unit I have the specs, parts and other pdfs from the internet
http://www.arvparts.com/coleman_mach_15_48204B876.pdf http://www.sahararv.com/pdfs/552-566...leman-Mach.pdf
note if you punch in the model number you will have other sites and info. the info is out there you just have to know where to look. the 2 problems I have had is the loosening of the long bolts that bolt it on and the tiny holes in the drip pan clogging up. you will know this when water runs out the ceiling register. I will be videoing my upgrade to my unit this fall