So if I come out of the heater vertically 12 ft and then go 3 ft horizontally out the SIDE of the garage (not the roof) to an end cap, would it be considered vertical.
I am putting in a Fe75 Rezor. Power vent exhaust. Plan is to bring the exhaust up vertically 10 ft and then thru the wall. Total of the horizontal run from the vertical is 3 ft to the cap outside. Here is the vent information from the manual.
2. Vent Pipe
If installed with a horizontal...