INOV8 Model F240 – Edited September 2008
43
7. The 120v on the orange wire energizes (opens) the air and oil solenoids.
8. The air now coming into the module will cause:
a. The Bimba cylinder to withdraw the needle from the nozzle.
b. Air to flow out the nozzle (To atomize the oil stream when it arrives.)
9. The 120v on the orange wire also energizes (opens) the oil solenoid causing it to
allow oil to flow to the oil gauge and out the nozzle.
10. The hot atomized oil sprays through the ignition arc, causing it to ignite. This state
continues throughout the 10 second PTFI interval – whether a flame was established
or not.
11. At the end of the PTFI period the controller will:
If a flame was established:
a. Turn off the PTFI light.
b. Remove voltage from terminal 4, which turns off the ignition transformer.
c. Apply voltage to terminal 5 (Main valve which is unused in an F200).
d. Leave the voltage on pilot valve terminal 3 (Orange wire firing circuit).
e. Enter “RUN” mode – Meaning only that, should the burner now lose the
flame, it will go into another 90 second pre-purge and then retry.
If no flame was established, shut down the burner by:
a. Removing voltage from terminal 4. (Ignition transformer circuit)
b. Removing voltage from terminal 3. (Orange wire firing circuit)
c. Removing voltage from terminal 8. (Burner motor and heater circuit)
d. Turning on the ALARM light on the controller.
e. Applying voltage to terminal “A” which turns on the red alarm light.
f. Tripping the controller’s reset button, which must be depressed for one
second to get the burner going again.
MAIN COMPONENTS & THEIR FUNCTIONS
THE FIREYE CONTROLLER
The Fireye combustion controller provides these functions:
1. It turns on the burner motor and heating element when the wall thermostat
supplies power to it.
2. It delays firing for 90 seconds after being told the oil is hot, in order to purge out
any fumes that may still be in the burning chamber.
3. It turns on the ignition transformer for the 10 seconds that PTFI is on.
4. It puts 120 volts on the orange wire circuit that causes the burner to fire.
5. It monitors the flame via the U.V. sensor and shuts the burner down or causes it
to go through a 90 second purge and retry if it loses sight of the flame. (If flame
is not detected in the 1
st
10 seconds of any firing attempt, the burner will be shut
down with the ALARM light on the controller and the red light on the front of the
burner ON. If the U.V. sensor saw a flame for the first ten seconds that went
away later, the controller will do a 90 second purge and retry.)
6. It monitors the signal coming from the module that tells it that the oil is hot
enough to fire. If at anytime that signal goes away, it will shut off the burner until
To Next Page