here is the entire print....I only included those three pages since that's the only part of the system that I'm having questions on....just that component on page 12. It clearly derives its common (input 1) from a 277 v source shown on page 5. Page 8 shows where 2 legs feed a 480 to 230vac...
I am working on installing this new system for a company and there is some confusion on what this component is. The original manufacturer is out of business, and has been for a while. I cannot find any information on the part or anything. Its like a ghost. So, according to this print I am to...