I had a small leak in one of the hoses going to or from my hot water tank (engine connections). I trimmed back the hose and re-clamped. In my rush I might have reversed the hoses. I noticed that there was no markings on the water heater as to in or out. Am I going to have a problem? I guess once I get into the water and have no hot water I will find out, but I wanted to make sure before I splashed.