While the term "oil heater" can refer to different types of heaters, the question likely refers to bleeding the heating oil burner system in a home that uses heating oil. This process removes air from the oil lines, which can prevent the burner from starting or operating efficiently. Here's how to bleed a heating oil burner (this process should ideally be done by a qualified technician but can be done by homeowners with caution):
Disclaimer: Working with oil burners and fuel systems can be dangerous. If you are not comfortable with these steps, contact a qualified heating technician. Improper bleeding can lead to fuel leaks and fire hazards.
Steps to Bleed a Heating Oil Burner
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Safety First: Turn off the power switch to the burner. This is usually a red switch located near the burner. Also, make sure you have absorbent materials (rags, paper towels) to catch any spilled oil.
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Locate the Bleeder Valve: The bleeder valve is typically a small screw or valve located on the oil pump. The oil pump is usually attached to the oil burner motor. It may have a flathead or Allen head.
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Prepare to Catch Oil: Place a container (like a small bowl or jar) under the bleeder valve to catch the oil that will be released.
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Loosen the Bleeder Valve: Using a wrench or screwdriver (depending on the valve type), carefully loosen the bleeder valve. About a quarter turn is usually sufficient.
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Turn on the Burner: Turn the power switch to the burner back on. The burner motor will start, and the oil pump will begin to operate.
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Watch for Air Bubbles: As the oil pump operates, oil mixed with air will begin to flow from the bleeder valve into your container. Watch the oil stream closely.
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Close the Valve When Oil is Clear: Once a steady stream of oil without air bubbles flows from the bleeder valve, carefully tighten the bleeder valve. Don't overtighten it.
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Restart the Burner: The burner should now start normally. If it doesn't, you may need to repeat the bleeding process or contact a technician.
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Clean Up: Turn off the burner. Dispose of the used oil and rags properly. Check for any leaks around the bleeder valve.
Important Considerations:
- If you run out of heating oil: The system will likely need to be bled.
- If the burner still doesn't start: There may be other problems, such as a faulty igniter, a clogged nozzle, or a problem with the oil pump itself. Contact a qualified heating technician.
- Modern burners may have slightly different bleed procedures. Check your burner's manual for specific instructions.
Warning: If you smell a strong odor of oil, or see oil leaking, turn off the burner immediately and call a qualified technician. Do not attempt to operate the burner if there is a fuel leak.
