Is it acceptable to wire this unit on a 30 amp breaker with 10 guage romex, or does it require 8 guage?

Hello! Thank you for contacting HVACDirect.com! This unit requires a minimum breaker size of 28 Amps and a minimum wire gauge of 8AWG but reccomends 6AWG wiring, so unfortunately, 10AWG would not be acceptable for power.