The unit is really old and everything has been changed out at one point or another. So when I looked all over the unit nothing came up. This is a office complex that is owned by the company I work for. In an effort to figure out the model number I went from one roof top to the next to find a unit that was the same. Third building was a charm! Thanks for all the help, and the insults. Being new to this I know I have room for improvement so I will lurk most of the time and post when I feel I have something to add.