Conductor and ocpd sizing for a/c heat unit

[Necnerd]

I’m sure I’m overthinking this but wanted to make sure I didn’t miss anything nec wise. The unit shows 4800watts/240v=20amps on the plug. The books says nema 620-r receptacle. I planned on running a 240v circuit using 12-2nm and installing the 6-20receptacle

 

[Dsg319]

I’m sure I’m overthinking this but wanted to make sure I didn’t miss anything nec wise. The unit shows 4800watts/240v=20amps on the plug. The books says nema 620-r receptacle. I planned on running a 240v circuit using 12-2nm and installing the 6-20receptacle

Can’t go wrong with the nameplate data.

 

[infinity]

That plug will only fit in a 240 volt, 20 amp receptacle so that is the configuration of the branch circuit that's required.