Wiring an Old wall heater

I have an old wall heater that I’m trying to wire…I recently replaced the electrical in the garage and am trying to incorporate an existing wall heater. I believe it’s 220 but I only have 2 black wires coming off of the internals. No ground or neutral? Do I just wire two hots to a two pole breaker? Fan has a 240 volt rating. Fasco type 63. 240/208 volts 60 hz