It's on the left, about 4" above the floor. Our contractor found it in the downloaded material, so I think it's in there somewhere.

He must be looking at a different manual than what I am. The only thing I've been able to find is the seven-page user's manual, which has virtually no information at all regarding installation other than it should be installed in compliance with the NEC. I did find a dimensional drawing, and it looks like there's a pretty fair amount of room back there.

Thanks for the info.

Though it's probably 4 months too late, here is what I found after A LOT of digging around--no access from bertazzoni dot com, though it is one of their links.

I'm also wondering about the gas line. I've looked at the backs of the Berts in the stores and it needs to be pretty specific since the back of the unit butts against the wall, but even these documents don't help much.

Here is a link that might be useful: 30

Here is the back of a 30" - might help...

Found two more..