Slant/Fin Wind-Induced Flame Loss / Venting Issue

Boiler frequently shuts down on flame failure during windy conditions

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Improper vent termination, Negative pressure in boiler room, Inadequate combustion air, Poorly supported vent on Slant/Fin boiler

How to Fix / Troubleshooting

Safety: Venting issues can cause flue gas spillage. Use a CO detector in the boiler area.

Steps:

  • 1. Inspect vent termination: Ensure it meets Slant/Fin and code clearances from corners, windows, and grade. Shield from prevailing winds if necessary.
  • 2. Combustion air: Verify combustion air openings are not blocked and are sized correctly.

Professional help: A contractor should evaluate vent design and correct any deficiencies.

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Repair Difficulty

Hard 4/5

Required Part

Vent Termination Kit
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