I will post the B/B diagram and I will fill you in a second after I post it. something did came up in my mind so better get this straighten out before something go heck ( WTFreak )
If you look at diagram C et D the C you will kick up 16 volts while diagram D will kick up 32 volts however there one thing John did hit the nail on one phase ( L2 ) the 120 volt will NOT affect but the other leg it will affect so I will have to post the revised rating so it will be anywhere from 136 to 156 volts from L1 to Netural.
So that can raise a new issue if you do plan to use the B/B avce 120 volt loads so pay attetion to it.
I did ran a little experment real quick and did see a minor blunder so better get this taken care of it right away before someone else get arse bitted from this one.
If you can get 12/24 verison you should be little safer but use the judgement call after you do the system check first to see how much it drop.