The gas furnace flame rod
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Flame rectification as a flame proving method for gas furnaces
Flame rectification in a gas furnace is a method of proving flame exists by using electronics.
When alternating current is supplied to a probe that is within a flame the flame will rectify the current from alternating current to direct current.
To the left is a flame rod. It extends into the flame to sense it.
This part is normally located on the opposite side of the burners from the HSI.
The signal from the flame rod is sent to the IFC so it may prove or disprove the flame with electronics.
When alternating current is supplied to a probe that is within a flame the flame will rectify the current from alternating current to direct current.
To the left is a flame rod. It extends into the flame to sense it.
This part is normally located on the opposite side of the burners from the HSI.
The signal from the flame rod is sent to the IFC so it may prove or disprove the flame with electronics.
The video below shows the flame rod sensing flame in the burner
Flame rectification is an electronic function. This video shows why it does what it does.
more coming