Thor 29.4 fresh water drain valve
I finally discovered the drain for the fresh water tank 2017 Thor 29.4.
Remove bedroom left side drawer. Very small plastic levers inside the drawer slide rails. Valve was hidden under a large coil of wires inside a large "loom" of wires. need flashlight and long arm. Blue pipe, at the base of tank - about where you'd expect a drain to be. Could be "under" some foam insulation. 1/4 turn to open. Drains out underneath near the propane line for external BBQ grill.
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