Needs some help in deciding how to extend the exhaust for my MEP 803A. I have mine installed under roof in a partially enclosed pole barn. In order to vent it outside, It needs to run straight up 4’ and then horizontally over 6’ for a total of a 10’ run. I was planning on supporting it from above with all thread and automotive exhaust hangers and using regular 1-1/4” exhaust tubing.
My question: with a 10’ run, do I need to be concerned with back pressure? I was thinking of using a larger diameter tubing such as up to 2”. I was going to install it with a slight slope away from the generator on the horizontal section to allow for condensation drain. Any thoughts or observations any may have would be greatly appreciated.