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Help - Flue Pipe condensation
Hi - I was just hired into heating and AC and moved my hot water heater about 4 feet a week ago. To do this, a new elbow or about 45 degree joint in the flue pipe metal tubing was made. I noticed when we're using hot water and the hot water heater is engaged, condensation begins leaking from a very small leak in this joint between flue pipe pieces. I will note that it has been very cold here in Chicago this week, and I'm not sure if that has anything to do with it. I checked my roof, and while there appears to be a good amount of ice around the cap, it still seems to be on.
My first question is, even if I didn't have the leak, this water would be running back into the water heater top - is this normal at times? I would think rust would be an issue.
Next, what is the recommendation on how to best seal the joints between vents. I thought just 3 screws would do. With CO passing upwards, I'm concerned some could escape into my unfinished basement.
Lastly, part of the flue vent rests on a wooden floor joist before running upward to the next floor. I would think this gets too hot for that to be acceptable.
Please let me know your thoughts, and thanks in advance.
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