Identifying Carrier Heat Pump Tonnage

Anyone familiar with Carrier heat Pumps that can help identify the tonnage. Is the first one 4 ton and the second one 8 ton? These are commercial units.

Model number 50tfq 004—511
Serial number 0902G50385

Model number 50tfq 008—511
Serial number 1002G50545

Thanks!

3 and 7-1/2

See This(PDF) pg 4

http://i202.photobucket.com/albums/aa54/mlarson_photos/CarrierRooftop.jpg

Thank you Mike, just what I needed.