How to Install a Hot Water Heater Discharge Pipe
Over time, sediment deposits can collect on the bottom of the hot water heater's tank, which can result in either no hot water or not enough hot water. With either problem, the tank must be drained to remove the sediments. In extreme cases, sediment can actually build up in the tank's discharge pipe, damaging the pipe. Replacing a water heater's discharge pipe is a relatively straightforward process.
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Instructions
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1
Turn off the water heater by turning the knob on top of the gas control box to the "Pilot" position. If the water heater is electric, turn the circuit breaker to the "Off" position at the circuit box.
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2
Turn off the water supply to the heater by turning both the cold and hot water valves in a clockwise direction. Both valves are located in the water supply lines that enter the top of the heater.
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3
Position a bucket underneath the discharge pipe, then open the discharge pipe to drain the water heater. Don't touch the water--it's hot.
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4
Grasp the discharge pipe with adjustable pliers and twist the pipe in a counterclockwise direction to remove it.
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5
Wrap the threaded end of the replacement discharge pipe with plumber's tape.
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6
Insert the discharge pipe into the water heater, then tighten the pipe with the adjustable pliers.
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7
Open the water supply valves to fill the tank, then turn the knob on the control box to the "On" position or, if working with an electric heater, turn the circuit breaker to the "On" position to complete the replacement.
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