Run your drain line.
Water heater pressure release valve drain.
A good rule of thumb is to connect a garden hose to the drain outlet and fully drain and clean your water heater while you have it shut down.
When you see water coming out from the water heater release valve there are two most likely causes.
Temperature pressure relief or tpr valves are safety devices installed on water heating appliances such as boilers and domestic water supply heaters.
When a tprv at.
Close the outlet valve at the bottom of the tank.
Tprs are designed to automatically release water in the event that pressure or temperature in the water tank exceeds safe levels.
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But if the termination of the piping is not readily visible such as if it is located under the house the water will continue to drain until the homeowner gets an amazing electric or gas bill and goes searching for the reason.
The relief valve is working the way it s intended and water drained to reduce the pressure inside the tank.
Close the pressure relief valve.
Draining a water heater step 1.
Release the pressure in the pipes using the lever on the pressure release valve.
Unscrew the fitting that dripped using an adjustable wrench and detach it from the top of the tank or the water.
Open the cold water intake valve to.
This prevents a water heater from exploding or turning into a missile.
Run a garden hose from the water heater drain to the exterior of your home.
Turn on the hot water faucet closest to the tank and allow the pressure in the tank to drain.
There s a problem with the valve such as a faulty seal and the water is unintentionally leaking.
Turn the cold water intake valve back off.
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Turn off the cold water inlet valve.
Remove the hose from the outlet valve.
If the water heater thermostat fails to turn off at its temperature setting and continues to heat the water indefinitely the tpr valve will open and let the overheated water out.
Before you drain a water heater check its pressure relief valve the means by.
This valve allows water or steam to escape from the water heater if the temperature or pressure gets too high.
If temperature sensors and safety devices such as tprs malfunction water in the system may become superheated exceed the boiling point.
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Check the pressure relief valve.