JOURNEYMAN OIL QUESTIONS AND
ANSWERS
The ECM (electrically commuted motor) features:
A. Quicker shut-off
B. Quicker starting
C. Variable speed motor capability
D. All of the above ✅✅correct answ-C. Variable speed motor capability
The cad cell control will go to the lock out position when a reading of _______ ohms are found at the
cad cell.
A. 300
B. 700
C. 2000
D. 1600 ✅✅correct answ-D. 1600
When the FF terminals are jumped after starting up and the controls goes into lock out what is the
correct action?
A. Reset control
B. Jump out TT
C. Replace control
D. Replace cad cell ✅✅correct answ-C. Replace control
The following factors affect cad cell performance except:
A. Cell alignment
B. Dirty cell
C. Improper flame
,D. Thermostat setting ✅✅correct answ-D. Thermostat setting
A switching relay can be used to
A. Control a line voltage device with low voltage controller
B. control a low voltage device with a line voltage controller
C. control two devices from a single controller
D. All of the above ✅✅correct answ-D. All of the above
TT terminals are normally used for?
A. Line 1
B. Neutral
C. Thermostat
D. Burner load ✅✅correct answ-C. Thermostat
The stack mount primary control must be ______ prior to use.
A. Stepped on
B. Put in step
C. Reset
D. None of the above ✅✅correct answ-B. Put in step
Safety timing is the same as flame response.
T/F? ✅✅correct answ-False
How do you take a control out of latch up?
A. Press reset button
B. Press reset and hold for 60 seconds
C. Disconnect line power and reconnect
, D. All of the above ✅✅correct answ-B. Press reset and hold for 60 seconds.
The red wire on Carlin microprocessor controls is for what purpose?
A. Burner
B. Limit
C. Line 2
D. Post purge ✅✅correct answ-D. Post purge
The normal ohms range for a cad cell during burning operation?
A. 1600-2000
B. 1000-1500
C. 300-1000
D. None of the above ✅✅correct answ-C. 300-1000
When selecting the proper safety timing of a cad cell control what is the most important factor?
A. Size of the fire box
B. Spray angle of the nozzle
C. Burner make and model
D. Maximum specified GPH input of the burner ✅✅correct answ-D. Maximum specified GPH input
of the burner
When the primary control relay is chattering what is the main cause of this condition?
A. Low voltage
B. Too much voltage
C. Bad thermostat
D. Bad cad cell ✅✅correct answ-A. Low voltage
ANSWERS
The ECM (electrically commuted motor) features:
A. Quicker shut-off
B. Quicker starting
C. Variable speed motor capability
D. All of the above ✅✅correct answ-C. Variable speed motor capability
The cad cell control will go to the lock out position when a reading of _______ ohms are found at the
cad cell.
A. 300
B. 700
C. 2000
D. 1600 ✅✅correct answ-D. 1600
When the FF terminals are jumped after starting up and the controls goes into lock out what is the
correct action?
A. Reset control
B. Jump out TT
C. Replace control
D. Replace cad cell ✅✅correct answ-C. Replace control
The following factors affect cad cell performance except:
A. Cell alignment
B. Dirty cell
C. Improper flame
,D. Thermostat setting ✅✅correct answ-D. Thermostat setting
A switching relay can be used to
A. Control a line voltage device with low voltage controller
B. control a low voltage device with a line voltage controller
C. control two devices from a single controller
D. All of the above ✅✅correct answ-D. All of the above
TT terminals are normally used for?
A. Line 1
B. Neutral
C. Thermostat
D. Burner load ✅✅correct answ-C. Thermostat
The stack mount primary control must be ______ prior to use.
A. Stepped on
B. Put in step
C. Reset
D. None of the above ✅✅correct answ-B. Put in step
Safety timing is the same as flame response.
T/F? ✅✅correct answ-False
How do you take a control out of latch up?
A. Press reset button
B. Press reset and hold for 60 seconds
C. Disconnect line power and reconnect
, D. All of the above ✅✅correct answ-B. Press reset and hold for 60 seconds.
The red wire on Carlin microprocessor controls is for what purpose?
A. Burner
B. Limit
C. Line 2
D. Post purge ✅✅correct answ-D. Post purge
The normal ohms range for a cad cell during burning operation?
A. 1600-2000
B. 1000-1500
C. 300-1000
D. None of the above ✅✅correct answ-C. 300-1000
When selecting the proper safety timing of a cad cell control what is the most important factor?
A. Size of the fire box
B. Spray angle of the nozzle
C. Burner make and model
D. Maximum specified GPH input of the burner ✅✅correct answ-D. Maximum specified GPH input
of the burner
When the primary control relay is chattering what is the main cause of this condition?
A. Low voltage
B. Too much voltage
C. Bad thermostat
D. Bad cad cell ✅✅correct answ-A. Low voltage
