I'm new to this forum and I hope this is the correct place for this post.
I would like to slightly re-position the exhaust outlet on my furnace. Currently it faces away from my house (as normal I believe). I would like to rotate it 90 degrees so that it runs parallel to the house. I would like to do this because the exhaust is on a narrow stairway on the side of my house and anything I can do to gain back 2-3" would be very helpful. At the moment I have to dodge the exhaust vent every time I use the stairs. All my clearances are fine. Closest window is 7 feet away.
I can't find anything either in my furnace installation manual, or on the web that indicates that this orientation is incorrect.