Hot water cross-over
I own a former rental unit, 2006 Majestic, and there is a blending arrangement on the back side of the water heater. This allows me to blend cold water with the hot water coming out of the water heater. It is a simple arrangement involving three in-line valves, one on the cold water supply near the water heater, one on the hot water supply line, and one on a connecting line between the cold line and the hot line. by adjusting the crossover line you can adjust the temp of the water to all the fixtures including the shower.
Don
__________________
|