I have a 29000 BTU a/c which needs a 220 line and the line a/c about 60' from the panel so do I need a twin 30 amp breaker with a 10-3 wire and is bx or romex better

What does the rating plate on the unit say, Is this an older unit to show 220? 240 is current service. BX is rarely used in the Atlanta area for residential purpose.