CHAPTERS 2 & 4 IN NORA BOOK
QUESTIONS WITH ANSWERS
High pressure oil burner - correct answer ✔✔ Any oil burner that operates with a punp pressure
of 100psi or greater.
What Components make up a high speed oil burner? - correct answer ✔✔ A) Burner Chassis
B) Blast Tube (With nozzle assembly)
C) Burner Motor
D) Oil Pump
E) Blower Wheel
F) Motor/ Pump Coupling
G) Ignition Transformer/ Igniter
H) Air Bands
I) Diffuser/ Retention Head
3 types of domestic oil burners - correct answer ✔✔ 1. Power burners (Atomizing)
A. High Speed- operates at 3450 RPMs
B. Low Speed- operates at 1725 RPMs
2. Rotary burners
3. Gravity Feed burners (Vapor Burner)
3 things needed for combustion - correct answer ✔✔ 1. FUEL
2. AIR
3. IGNITION (Spark)
, The key factor for achieving complete and efficient combustion with an oil burner? - correct
answer ✔✔ Good atomization of the fuel
What is the minimum psi all oil pumps must be set to? - correct answer ✔✔ 100 psi
Two things that must be tested on an oil pump in the field? - correct answer ✔✔ A) Pump
pressure
B) Pump cutoff
Pump-cutoff - correct answer ✔✔ When the burner shuts down, spring tension against pressure
regulating piston will cause the piston to close, shutting off oil discharge to the nozzle at approx.
15-20% below operating pressure.
Defective Pump-Cutoff - correct answer ✔✔ Causes raw un atomized fuel to "Dribble" from the
fuel nozzle after shutdown resulting in a "Smokey Shutdown" and the premature formation of
soot on the heat exchanger.
After Drip - correct answer ✔✔ The dribble of oil caused by a defective "Pump- Cutoff"
2 types of fuel pumps - correct answer ✔✔ 1. Single Stage Pump
2. Two Stage Pump
Single Stage Pump - correct answer ✔✔ This pump has one set of gears to deliver fuel to the
nozzle. It has the capacity to lift up to 10" of vacuum (This pump is NOT good for "Lifting" fuel)
Two Stage Pump - correct answer ✔✔ This pump has two sets of gears. One set lifts the oil to
the pump, and the second set delivers the oil under pressure to the nozzle. This pump has a
lifting capacity up to 15-20" of vacuum.
QUESTIONS WITH ANSWERS
High pressure oil burner - correct answer ✔✔ Any oil burner that operates with a punp pressure
of 100psi or greater.
What Components make up a high speed oil burner? - correct answer ✔✔ A) Burner Chassis
B) Blast Tube (With nozzle assembly)
C) Burner Motor
D) Oil Pump
E) Blower Wheel
F) Motor/ Pump Coupling
G) Ignition Transformer/ Igniter
H) Air Bands
I) Diffuser/ Retention Head
3 types of domestic oil burners - correct answer ✔✔ 1. Power burners (Atomizing)
A. High Speed- operates at 3450 RPMs
B. Low Speed- operates at 1725 RPMs
2. Rotary burners
3. Gravity Feed burners (Vapor Burner)
3 things needed for combustion - correct answer ✔✔ 1. FUEL
2. AIR
3. IGNITION (Spark)
, The key factor for achieving complete and efficient combustion with an oil burner? - correct
answer ✔✔ Good atomization of the fuel
What is the minimum psi all oil pumps must be set to? - correct answer ✔✔ 100 psi
Two things that must be tested on an oil pump in the field? - correct answer ✔✔ A) Pump
pressure
B) Pump cutoff
Pump-cutoff - correct answer ✔✔ When the burner shuts down, spring tension against pressure
regulating piston will cause the piston to close, shutting off oil discharge to the nozzle at approx.
15-20% below operating pressure.
Defective Pump-Cutoff - correct answer ✔✔ Causes raw un atomized fuel to "Dribble" from the
fuel nozzle after shutdown resulting in a "Smokey Shutdown" and the premature formation of
soot on the heat exchanger.
After Drip - correct answer ✔✔ The dribble of oil caused by a defective "Pump- Cutoff"
2 types of fuel pumps - correct answer ✔✔ 1. Single Stage Pump
2. Two Stage Pump
Single Stage Pump - correct answer ✔✔ This pump has one set of gears to deliver fuel to the
nozzle. It has the capacity to lift up to 10" of vacuum (This pump is NOT good for "Lifting" fuel)
Two Stage Pump - correct answer ✔✔ This pump has two sets of gears. One set lifts the oil to
the pump, and the second set delivers the oil under pressure to the nozzle. This pump has a
lifting capacity up to 15-20" of vacuum.
