Check to make sure your bypass valve is closed. Look in your water heater compartment. If it is like mine you will see two pipes coming to and going from the water heater with valves in the input side. Those valves should be open, i.e the handles should be in line with the pipes. There is also a cross pipe with a valve in it connecting the hot and cold pipes. That valve should be off, e.g. the handle should be perpendicular to the pipe. If it is open the hot and cold water will mix.
"You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
2001 Safari 25 RB Twin (Gone, but not forgotten)
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
WBCCI 1322, TAC FL-39, AIR 82265