Need to thank you for the post with picture. I was just cruising posts and stopped here, as my "hot water" had been a little cool lately. When I dewinterized my Motor Home a few months ago, I just opened values under the sink near the hot water heater without checking which one was which. After seeing your picture, I headed out to check the values to the hot water heater. Sure enough, I had somehow opened or left open the bypass value. Closed it, waited, and my nice hot water was back!! Thanks!!
Finally completed all State visits in August 2011 with a trip to North Dakota.