Who Do I address the cover letter to?

[Sandra2015]

I am going to apply to a hospital where I was precepted as a senior nursing student. I know the manager and she is aware that I am applying to her unit, but the application is submitted online. I wouldn't want to address the cover letter to her if she won't see it first. Should I just address it to Nurse recruitment/ recruiter etc. or address it to the manager?

[RN403, BSN, RN]

"To whom it may concern" or "Dear Human Resources"

[blah_blah_blah]

If you can find the name of the recruiter, I'd use that. If you can't I'd use what RN403 said.