This is an old cooling only RTU. I am thinking 1989 . 15 ton
In the 70s’ and 80s’ Carrier frequently used the letter and first numerical digit format for month/year. So I would say 1988 is a possibility.
I think you are right and it aligns with some other equipment I found in the building. Thanks!
Thank you for looking that up @rlewis5
Brian, did you look at this?
Yes sir I did and thank you. It was helpful in converting the tonnage code. And it directed me to the 1980’s with the first letter coding. Then I got stuck.