VAC!
The Primary voltage of most oil fired furnaces and boilers.
What is 120 Volts Alternating Current?
What is 120 VAC?
The component connected to the FF terminals on the primary control.
What is the CAD Cell?
The Cad cell uses this in order to prove normal operation.
What is the light made by the flame in the combustion chamber?
Name of the electrical tester used.
What is a Volt Ohm Meter?
The electrode gap or A gap
What is the distance between the electrode tips?
The Secondary voltage found at terminals TT on a 8184 Primary Control.
What is 24/30 VAC?
The component connected to the TT terminals of a primary control for a furnace.
What is a Thermostat?
Your expectation for a test performed in "darkness".
What is 100,000 Ohm's or more?
proper ohms for a cad cell
300 too 1000
Part of yearly maintenance to be performed on an oil burner system. You should replace this component yearly because it's stone filter can easily be clogged during the course of a normal heating season.
What is the nozzle?
Voltage needed to close contactor relay inside the Primary Control.
What is 24/30 VAC?
When the system is waiting for a call for heat.
What is standby?
Your expectations for a test when exposed to "light"?
What is 1,600 Ohm's or less.
While wearing PPE, place the shaft of a screw driver across both springs of the Ignition Transformer looking for a spark length of 3/4" to 1 1/4".
What is a Frankenstein Test or Spark Test?
Distance measured from nozzle face, forward, to the electrode tips.
What is the Front Gap or C gap?
The component that converts primary voltage into secondary voltage inside the ignition assembly.
What is a Step Up Transformer?
When the system has reached recycle limit.
What is lock-out?
**Unrelated to a Cad Cell** The number of filters that are used in an oil fired system.
What is 3?
Common pump pressure
What is 100 to 140psi?
Printed letters and numbers on a nozzle that needs to be matched upon replacement.
What is degree angle of spray, cone type, and Gallons per hour of fuel dispensed?
The main motor, when it is supplied with 120 VAC, runs this component.
What is the fuel pump?
When operating correctly, Line in power will transfer to this colored conductor upon a call for heat.
What is Orange?
A small length of thermostat conductor wire that is used to bypass the Cad Cell connection in real time to allow you to perform a real time test of it's resistance in the presence of the flame.
What is a jumper?
The two or three primary powered components that the primary control operates when the burner is running.
What is the Burner motor, Ignition Transformer, and Oil Solenoid Valve?
The "B" gap or Above gap
The measured distance from center of nozzle, up, to the electrode tips.