Originally Posted by ukmark
Same thing just happened to us. Brand new Vibe 207RD, first trip last weekend we found hot and cold reversed and the hot water ran tepid way too fast. I finally got a picture of the problem -- sure enough, the city water is teed into the hot water line instead of the cold. Turns out the hot tap to the outside shower is right next to it and they got them switched. With my phone camera I can see the shower has two cold water taps! So yeah this means that the cold water goes backwards through the water heater which greatly reduces the usable capacity. Ironically if we were running with the tank and pump it would have worked right.
We're taking it in Saturday for the "punch list" service after the first checkout trip. Kind of a sad statement that there is such a thing expected.
How common is misconfigured plumbing?