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warning: flame roll out can cause serious injury
1) turn service switch off at the furnace 2) adjust thermostat so set point is 5-6 degrees above room temp, set t-stat for heat, and set fan to auto 3) remove ignition compartment door of the furnace as opposed to the door enclosing the indoor blower motor 4) turn the furnace service switch back on 5) do not look directly at the combustion burners as flame will shoot out of the burner compartment 6) observe the ignition
finally proper ignition is confined to the area intended for combustion, with a blue flame. a roll out will cause the flame to ignite beyond the burners and may even blow beyond the blower compartment. further, a roll out can persist beyond the initial ignition sequence.
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∙ 14y ago
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What causes a flame roll out?
A flame roll out can be caused by a disruption in the airflow or fuel mixture within a gas appliance. This can lead to the flame being pushed out of the combustion chamber instead of burning inside it. Common causes include blocked vents or flues, improper installation, or a malfunctioning gas valve. It is important to address flame roll out promptly as it can pose a safety hazard due to the risk of fire or carbon monoxide poisoning.
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