Quote:
Originally Posted by speedster100
two on the hot water tank, one on the upper line and one on the lower line... They are there for winterizing through the onboard system.
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The hot water outlet is the only one with a check valve. The hot water heater bypass valve in the convenience center turns off water to the water heater tank, and the hot outlet check valve keeps water from backflowing into the tank when you winterize the rig.