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Verify the WATER HEATER is OFF, both gas and electric, then remove the drain plug and open the PRESSURE RELIEF VALVE to allow the tank to drain. After completely empty, turn the WATER HEATER BYPASS VALVE to the “BYPASS” position.
I STRONGLY suggest you open the pressure relief BEFORE you remove the tank drain plug. If you remove the plug with pressure in the tank you can be injured by the plug acting like a missile.
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