Finally got my S-9 and its up and running.  I just ran a two new 20 amp circuits but my question is my bimain power supply is wired for a standard 110 volt plug.  How to I set this power supply up to run 2 phase 220?  According to the spec I can pull 1600watts at 220 but it only has 3 connections.....ground, neutral, and hot.  Thanks