Reassemble and Test Boiler — Reinstall the Access Panel
Part of project
How to Relight a Gas Water Heater Pilot Light · Step 5 of 5
In this video
Carefully guide the burner tube assembly back into the boiler. Reconnect the pilot supply tube and the new thermocouple to the gas valve. Thread both fittings by hand first to prevent cross-threading, then use the wrenches to tighten them until they are snug. Replace the front flame shield. Turn the gas supply and power back on. Light the pilot light according to the manufacturer's instructions. Once the pilot is stable, turn the boiler on to ensure the main burners ignite. Finally, replace the boiler covers.
Goal: Complete the reassembly of the boiler and verify that the repair was successful.
- Ensure all gas fittings are properly tightened to prevent dangerous gas leaks. However, do not overtighten the soft brass fittings.
- The long, flexible copper line of the new thermocouple can be gently coiled to take up excess length. Avoid sharp bends.
- Always replace all shields and covers before considering the job complete.
Used in this video
- Open-End Wrench (Size: 1/2) — Tightening the flare nut on the pilot supply tube.
- Open-End Wrench (Size: 3/8) — Tightening the flare nut on the thermocouple.
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FAQs
What are the crucial safety steps to take before and during relighting the pilot light?
Always ensure there's no smell of gas before you begin. If you smell gas, immediately turn off the main gas supply, ventilate the area thoroughly, and do not attempt to light anything; call a professional. Always work in a well-ventilated area.
My pilot light won't stay lit after I release the gas control knob. What should I do?
This often indicates a problem with the thermocouple, which is a safety device that senses the pilot flame. Try holding the gas control knob in for a full 60 seconds (or even 90 seconds) after lighting to ensure the thermocouple heats sufficiently. If it still won't stay lit, the thermocouple may be dirty or faulty and might need cleaning or replacement by a professional.
Do I need the exact "Scripto Aim-n-Flame Max Flex Utility Lighter" or will any long lighter work?
While the specific Scripto model is recommended for its flexibility and length, any long-nosed utility lighter designed for fireplaces or grills will work, as long as it allows you to safely reach the pilot light without getting too close to the flame. Avoid using short matches or standard lighters, as they pose a burn risk.
I'm having trouble locating the access panel or the pilot light itself. Where are they usually found?
Most gas water heaters have an access panel located at the bottom front of the unit, covering the burner and pilot assembly. For older models, you might need to remove an outer metal cover first. If you're still unsure, consult your water heater's owner's manual for exact diagrams and instructions specific to your model.
Reassemble and Test Boiler — Reinstall the Access Panel
Part of project
How to Relight a Gas Water Heater Pilot Light · Step 5 of 5
In this video
Carefully guide the burner tube assembly back into the boiler. Reconnect the pilot supply tube and the new thermocouple to the gas valve. Thread both fittings by hand first to prevent cross-threading, then use the wrenches to tighten them until they are snug. Replace the front flame shield. Turn the gas supply and power back on. Light the pilot light according to the manufacturer's instructions. Once the pilot is stable, turn the boiler on to ensure the main burners ignite. Finally, replace the boiler covers.
Goal: Complete the reassembly of the boiler and verify that the repair was successful.
- Ensure all gas fittings are properly tightened to prevent dangerous gas leaks. However, do not overtighten the soft brass fittings.
- The long, flexible copper line of the new thermocouple can be gently coiled to take up excess length. Avoid sharp bends.
- Always replace all shields and covers before considering the job complete.
Used in this video
- Open-End Wrench (Size: 1/2) — Tightening the flare nut on the pilot supply tube.
- Open-End Wrench (Size: 3/8) — Tightening the flare nut on the thermocouple.
Frequently Asked Questions
What are the crucial safety steps to take before and during relighting the pilot light?
Always ensure there's no smell of gas before you begin. If you smell gas, immediately turn off the main gas supply, ventilate the area thoroughly, and do not attempt to light anything; call a professional. Always work in a well-ventilated area.
My pilot light won't stay lit after I release the gas control knob. What should I do?
This often indicates a problem with the thermocouple, which is a safety device that senses the pilot flame. Try holding the gas control knob in for a full 60 seconds (or even 90 seconds) after lighting to ensure the thermocouple heats sufficiently. If it still won't stay lit, the thermocouple may be dirty or faulty and might need cleaning or replacement by a professional.
Do I need the exact "Scripto Aim-n-Flame Max Flex Utility Lighter" or will any long lighter work?
While the specific Scripto model is recommended for its flexibility and length, any long-nosed utility lighter designed for fireplaces or grills will work, as long as it allows you to safely reach the pilot light without getting too close to the flame. Avoid using short matches or standard lighters, as they pose a burn risk.
I'm having trouble locating the access panel or the pilot light itself. Where are they usually found?
Most gas water heaters have an access panel located at the bottom front of the unit, covering the burner and pilot assembly. For older models, you might need to remove an outer metal cover first. If you're still unsure, consult your water heater's owner's manual for exact diagrams and instructions specific to your model.