Extract from FAQ!!!
Who needs an I-864?
Applicants for family-based immigrant visas, including orphans. (Self-petitioning widows, widowers, and battered spouses and their children are exempt from this requirement), and applicants for employment-based immigrant visas whose relative filed the immigrant visa petition or whose relative has a 5 percent or greater ownership interest in the business that filed the petition
This is clear that only family based applications require I-864. I am awaiting confirmation from Consulate.
Thanks