I understand your point, but are we talking wood or coal here
We are talking both. I have far more experience with wood then coal. Wood was always male down, but if you had a bunch of creosote mixed with water it was going to come out anyways. People bought the cheap adjustable elbows, put the seam on the bottom, etc. Wood is just a mess. However, with coal I can't see for the life of me why it would make a difference. I bet you can find coal burning appliances that only receive one end or the other. Lets see your pictures everyone!
Hmmm, I seem to remember being told by someone that should have known to always pitch the stovepipe back towards the appliance. Never put it horizontal. The heated exhaust will flow faster/better with an upward slope and condensate will run back and be evaporated or consumed. Opinions on that?
I had a inspector fail a gas water heater vent on me years back. Forget which state I was in at the time. Told me all male ends should go toward the roof. Just saying .
I have had a goround with some inspectors. They are just like everyone else sometimes. They will tell you something that is not a code just because it is their opinion or they are being jerks. Or just to prove their in charge. Just like calling the DEP and asking about setback codes for building near water. It depends on the day and the little hippie girl you get. They will lie through their teeth to save the environment. You have to know the codes yourself and decide if it is worth fighting about.
Come to think of it, I have seen gas HW heaters with condensate running down the pipe in old houses with wet basements and cold brick chimneys. I guess it would be best to stop it from flowing down into the heater and rotting it out. Pipe is cheap and heaters are not.