Proves flame at the point of ignition.
Flame rod sensor circuit.
Because of the flexibility of positioning a flame rod a pilot flame can be proven at the point of intersection with the main flame.
This one explains the electronics behind the flame rod control system.
It does this by generating a potential voltage at the flame sensing terminal this terminal is connected to the sensor with a conductor.
In a nutshell the flame rectification system is an electrical process that causes a low level dc current to be conducted from the.
If proof of flame is not present the icm will de energize the gas valve and retry for ignition or lockout.
Quick response to flame failure.
The sensor needs to be cool to the touch when you clean it so it doesn t melt the scotchbrite pad and leave a residue on the flame rod.
In a nutshell the flame rectification system is an electrical process that causes a low level dc current to be conducted from the.
The other connection in the circuit is the flame being in contact with a metal surface that acts as a ground.
When no flame.
This is known as a flame sensor or flame rod.
Disconnect the flame sensor wire from sensor.
Connect a micro amp meter in series with this wire and the.
Also some tips for servicing.
This video is part of the heating and cooling series of.
It is essentially fail safe.
I am sensing a flame using a flame rod.
Troubleshoot flame sensor the flame sensor in any furnace proves combustion.
A special metal rod is mounted in the path of the flame.
This is known as a flame sensor or flame rod.
After cleaning you should reinstall the flame sensor and take another reading in order to see how much you improved flame signal.
Flame rods are found on nearly all induced draft burner systems and on many forced draft burners.
The flame rod in your picture is not a thermocouple.
Flame rods are found on nearly all induced draft burner systems and on many forced draft burners.
I am using 12v ac at the input and at the output flame sensing circuit which is made of opamp some resistors and capacitors i get 1 6 2 4v when there is a flame and 3 8 4v when there is a short circuit and 5v when there is no flame.
Most every flame rod system i have worked on puts and ac voltage on the flame rod.
If abnormal situations exist such as open circuits short.
A special metal rod is mounted in the path of the flame.
Once the board sends a call to the gas valve to open it monitors the current flow on the flame sensing rod.
Flame sensing rods stick out into the flame and connect back to the furnace board.
Flame rods have the following advantages.
