Help with age of this old Carrier please

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.

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I think you are right and it aligns with some other equipment I found in the building. Thanks!

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Yep! 1988…

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Thank you for looking that up @rlewis5

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Here is page 2 if you ever need it.

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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.