Finally had the inspector over this morning and got the go ahead. The window is coming out this summer and in the meantime it is sealed shut from the outside. The flame seems a little high to me. This was after about an hour. I lowered the feed to 3.5. It is running in Auto-Fan set in the middle and the probe still calling for heat. The convoluted pipe was necessitated by the oil burner chimney being right outside exactly where you would normally run the vent so I had to come over to the right of it. Crazy but it almost seems like I have too much draft but with 4inch and 2-90s and 1-45 and 18 inches of horiz just to get it out the house seems impossible. I have 4 ft vertical outside.