How To Purge Air From Gas Line On Water Heater – Step By Step Guideline

Here are the steps to follow to purge air from a gas line on a water heater:

how to purge air from gas line on water heater – 12 Step

how to purge air from gas line on water heater step:

  1. Shut off gas supply to water heater.
  2. Locate gas control valve or pilot assembly.
  3. Set gas valve to “OFF.”
  4. Wait to clear gas buildup.
  5. Switch gas valve to “PILOT.”
  6. Hold pilot button and relight.
  7. Keep pilot button pressed for one minute.
  8. Release pilot button, check for lit pilot.
  9. Adjust temperature on gas control valve.
  10. Gradually open gas supply valve.
  11. Inspect for gas leaks.
  12. Confirm water heater operation.

Here The details Of these Step

Materials you need:

  • Screwdriver
  • Wrench
  • Gas line tape (if necessary)

Steps:

  1. Turn off the gas supply valve.
  2. Locate the gas control valve on the water heater. It is usually located near the bottom of the unit.
  3. Turn the gas control valve to the “OFF” position.
  4. Locate the pilot light and burner assembly. This is usually located under a removable cover at the bottom of the water heater.
  5. Remove the cover and use a screwdriver to turn the gas control knob to the “PILOT” position.
  6. Hold down the pilot light button or igniter and light the pilot light. Keep holding the button for about 30 seconds to allow the thermocouple to heat up and hold the pilot light on.
  7. Release the pilot light button and turn the gas control knob to the “ON” position.
  8. Turn on the hot water faucet in a nearby sink or tub. This will allow air to escape from the gas line and water heater.
  9. Wait for a steady stream of water to come out of the faucet before turning off the hot water faucet.
  10. Inspect the burner assembly for proper operation. It should produce a blue flame with a yellow tip.
  11. If the flame is not blue or if it is flickering, turn off the gas control valve and contact a professional to inspect and repair the water heater.
  12. Replace the cover and turn the gas supply valve back on.

Note: If you have trouble lighting the pilot light or if the gas supply valve or control valve are difficult to operate, turn off the gas supply valve and contact a professional plumber or gas technician to inspect and repair the water heater.

Precautions Before Purging Air from Gas Line

Before purging air from the gas line of a water heater, it is important to take the following safety precautions:

  1. Turn off the gas supply valve: The gas supply valve should be turned off to prevent any gas from flowing through the gas line while the air is being purged. This reduces the risk of a gas leak and potential fire hazard.
  2. Turn off the electricity: If your water heater has an electric starter or electric components, turn off the electricity to the unit before starting the purging process. This will prevent any electrical sparks from igniting the gas that may be present in the gas line.
  3. Allow time for the water heater to cool down: If you have been using hot water recently, wait for the water heater to cool down before attempting to purge air from the gas line. This will prevent any accidental burns or injuries from hot surfaces.
  4. Follow the manufacturer’s instructions: It is important to read and follow the manufacturer’s instructions for purging air from the gas line. This will ensure that you are following the correct procedures and using the proper tools and materials.
  5. Use caution when handling gas lines: Gas lines can be dangerous if not handled properly. Use caution when handling the gas line and make sure to use the correct tools and materials, such as a wrench and gas line tape, if necessary.

Restarting the Water Heater

After purging the gas line on a water heater, it is important to restart the unit properly to ensure safe and efficient operation. Here are the steps to follow:

  1. Replace the cover: If you removed the cover to access the pilot light and burner assembly, replace it before continuing.
  2. Turn on the gas supply valve: Slowly turn the gas supply valve back on to allow gas to flow to the water heater.
  3. Turn on the electricity: If your water heater has an electric starter or electric components, turn the electricity back on.
  4. Turn the gas control valve to the “ON” position: Turn the gas control valve to the “ON” position to allow gas to flow to the pilot light and burner assembly.
  5. Check for leaks: Use a gas leak detector solution or a mixture of soap and water to check for any gas leaks around the gas supply valve and gas line connections.
  6. Light the burner assembly: Hold down the pilot light button or igniter and light the burner assembly. Keep holding the button for about 30 seconds to allow the thermocouple to heat up and hold the burner on.
  7. Check the flame: Inspect the burner assembly for proper operation. It should produce a blue flame with a yellow tip.
  8. Check the hot water: Turn on a hot water faucet in a nearby sink or tub and wait for the water to heat up. The water should be hot within a few minutes.

By following these steps, you can ensure that your water heater is operating safely and efficiently after purging air from the gas line. It is important to check for proper function and address any issues promptly to prevent further damage or safety hazards.

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