I have a wf evision 4 ton and form time to time I get hot water  in my cold water pipe
check the in let and out let pipe of the system and they are right, as to the word on the wf.  (in  out) on the side of the system.
does any know what might I do to fix this problem. The cold water pipe that goes into the system is hot?
Bruce

Here is a thread from another forum, might help you, might not.

http://community.geoexchange.org/threads/desuperheater-hot-water-getting-into-cold-water-faucets.5582/

ChrisJ

I've been having the same problem - warm/hot water in my cold taps when I first turn it on, and also lack of hot water; it's kinda cold. So I went down into the basement, and felt the temp. of the various pipes. The cold pipes where warm, so I turned on the cold at my utility sink, and the pipes cooled off. Then I could feel them warming up again - but the heat wasn't coming from my hwt, but from the cold pipe on my shower connection. So what I suspect is that the water mixer on my shower. Hears what I think is happening; hot water is leaking thru the temp. mixer on the shower valve, even when it's off. It's the only explanation I can come up with, but I have no idea as to how these single value hot/cold mixers work, so I don't know HOW it's happening. Anyone care to explain?