dry return...

anthony_3

I checked my dry return with a level. It seems it is runs perfectly horizontal(level). The reason I checked this is because I felt the dry return before it turned into a wet return and it was cold (after the boiler had fired and stopped). When I slid my hand along the dry return it eventually felt warm. Does this mean condensate is having a touch time moving down the system? With this condition, at what point would I have water hammer and where would it likely occur.

Thanks so much for comments!