P | a |g | e | | |1
OIL BURNER LICENSE EXAM AND
PRACTICE 2026-2027 NEW UPDATE
QUESTIONS AND CORRECT SOLUTIONS
GUARANTEED PASS
All |fill |and |vent |piping |shall |be |made |of: |- |ANSWER- |- |Steel
- Brass
- Pipe-malleable
Piping |used |in |the |installation |of |oil |burners? |- |ANSWER- |3/8 |(1/2 |O.D.)
LWCO |are |required |on |all |steam |and |water |boilers |over | BTU's |-
ANSWER- |400,000
|
True |or |False:
An |inground |tank |inspection |pit |can |be |in |a |basement |- |ANSWER- |False
Liquid |tight |silver |ramp |should |be |at |least | high |- |ANSWER- |6"
When |do |you |need |a |draft |regulator? |- |ANSWER- |"As |with |all |oil |heat |appliances |always |follow
manufactures |instructions"
|
The |cross |connection |between |two |supply |tanks |shall |not |exceed? |- |ANSWER- |660 |gallons
, P | a |g | e | | |2
When |is |an |automatic |draft |control |not |required? |- |ANSWER- |When |the |equipment |is |so
designed |to |control |the |draft
|
Combustion |performance |testing |can |indicate: |- |ANSWER- |- |Improper |air |oil |mixture
- Too |much |combustion |air
- Low |pump |pressure
If |a |second |oil-burning |appliance |is |installed |in |a |single |chimney, |you |must |ensure: |-
ANSWER- |Sufficient |draft |is |available |for |safe |operation |of |all |connected |equipment
|
Delayed |ignition |can |be |caused |by: |- |ANSWER- |Weak |ignition |transformer
You |should |replace |the |oil |burner |nozzle |with: |- |ANSWER- |The |manufacturers |recommended
nozzle |spray |pattern |and |spray |angle
|
Viscosity |problems |can |be |corrected |by: |- |ANSWER- |Decreasing |the |nozzle |size |and |increasing
the |pump |pressure |accordingly
|
The |minimum |operating |pressure |of |an |oil |pump |is: |- |ANSWER- |100 |PSI
If |a |stack |type |controller |fails, |you |must: |- |ANSWER- |Replace |it |with |an |approved |type
controller
|
Aquastats |are |normally |found |on |what |type |of |heating |system? |- |ANSWER- |Hydronic
, P | a |g | e | | |3
Airstats |are |found |on |what |type |of |heating |system? |- |ANSWER- |Forced |warm |air |systems
Under |sized |returns |on |a |warm |air |system |can |result |in |what? |- |ANSWER- |Short |cycling |of |the
oil |burner
|
Incorrect |nozzle |selection |in |regards |to |gallon |per |hour, |can |result |in |what |problems |in |a |steam
system? |- |ANSWER- |Some |radiators |not |heating |quickly |enough
|
Low |boiler |water |temperature |in |a |hydronic |hot |water |system |may |be |caused |by? |-
ANSWER- |Under |sized |oil |burner |nozzle
|
Some |radiators |on |a |steam |system |do |not |heat |up |because: |- |ANSWER- |The |radiator |vents |are
clogged
|
On |a |hot |water |boiler |the |pressure |is |30 |PSI |and |the |relief |valve |is |open |because: |- |ANSWER-
- Leaky |tank |less |coil
- Bad |pressure |reducing |valve
- Perforated |tank |less |bladder
Some |forced |hot-water |radiators |are |not |heating |because: |- |ANSWER- |- |The |vent |is |clogged
- The |radiators |are |air |bound
- The |radiator |valves |are |clogged |shut
A |cad-cell |primary |control |can |lock-out |safety |because: |- |ANSWER- |- |The |cad-cell |is |dirty
- The |cad-cell |is |faulty
- The |cad-cell |is |not |sensing |the |flame
, P | a |g | e | | |4
On |a |no-heat |call, |a |cad-cell |primary |control |fires |when |TT |is |jumped |out |because: |-
ANSWER- |The |thermostat |or |thermostat |wires |are |no |good
|
What |is |the |gauge |of |a |275g |above-ground |tank? |- |ANSWER- |12 |g
True |or |False:
The |maximum |amount |of |fuel |may |be |delivered |without |a |permit |to |store |in |effect |provided |that
application |has |been |made |in |accordance |with |code. |- |ANSWER- |True
|
Vent |pipe |size |for |a |500 |g |tank |should |be: |- |ANSWER- |1-1/4"
True |or |False:
A |supply |tank |may |be |supported |by |any |ridge |support |- |ANSWER- |False
Stack |switch |relays |can |no |longer |be |used |in |installations |or |replacement |because: |-
ANSWER- |Their |lock-out |time |is |no |longer |the |code |requirement
"In-step" |means: |- |ANSWER- |The |primary |control |start |circuit |is |closed
On |a |no |heat |call |on |a |hot |water |system, |the |oil |burner |is |off |on |a |high-limit, |but |the |circulator |is
not |running |because: |- |ANSWER- |- |The |reverse |is |open
|
- The |circulator |motor |is |burned |out
- The |switching |relay |is |faulty
OIL BURNER LICENSE EXAM AND
PRACTICE 2026-2027 NEW UPDATE
QUESTIONS AND CORRECT SOLUTIONS
GUARANTEED PASS
All |fill |and |vent |piping |shall |be |made |of: |- |ANSWER- |- |Steel
- Brass
- Pipe-malleable
Piping |used |in |the |installation |of |oil |burners? |- |ANSWER- |3/8 |(1/2 |O.D.)
LWCO |are |required |on |all |steam |and |water |boilers |over | BTU's |-
ANSWER- |400,000
|
True |or |False:
An |inground |tank |inspection |pit |can |be |in |a |basement |- |ANSWER- |False
Liquid |tight |silver |ramp |should |be |at |least | high |- |ANSWER- |6"
When |do |you |need |a |draft |regulator? |- |ANSWER- |"As |with |all |oil |heat |appliances |always |follow
manufactures |instructions"
|
The |cross |connection |between |two |supply |tanks |shall |not |exceed? |- |ANSWER- |660 |gallons
, P | a |g | e | | |2
When |is |an |automatic |draft |control |not |required? |- |ANSWER- |When |the |equipment |is |so
designed |to |control |the |draft
|
Combustion |performance |testing |can |indicate: |- |ANSWER- |- |Improper |air |oil |mixture
- Too |much |combustion |air
- Low |pump |pressure
If |a |second |oil-burning |appliance |is |installed |in |a |single |chimney, |you |must |ensure: |-
ANSWER- |Sufficient |draft |is |available |for |safe |operation |of |all |connected |equipment
|
Delayed |ignition |can |be |caused |by: |- |ANSWER- |Weak |ignition |transformer
You |should |replace |the |oil |burner |nozzle |with: |- |ANSWER- |The |manufacturers |recommended
nozzle |spray |pattern |and |spray |angle
|
Viscosity |problems |can |be |corrected |by: |- |ANSWER- |Decreasing |the |nozzle |size |and |increasing
the |pump |pressure |accordingly
|
The |minimum |operating |pressure |of |an |oil |pump |is: |- |ANSWER- |100 |PSI
If |a |stack |type |controller |fails, |you |must: |- |ANSWER- |Replace |it |with |an |approved |type
controller
|
Aquastats |are |normally |found |on |what |type |of |heating |system? |- |ANSWER- |Hydronic
, P | a |g | e | | |3
Airstats |are |found |on |what |type |of |heating |system? |- |ANSWER- |Forced |warm |air |systems
Under |sized |returns |on |a |warm |air |system |can |result |in |what? |- |ANSWER- |Short |cycling |of |the
oil |burner
|
Incorrect |nozzle |selection |in |regards |to |gallon |per |hour, |can |result |in |what |problems |in |a |steam
system? |- |ANSWER- |Some |radiators |not |heating |quickly |enough
|
Low |boiler |water |temperature |in |a |hydronic |hot |water |system |may |be |caused |by? |-
ANSWER- |Under |sized |oil |burner |nozzle
|
Some |radiators |on |a |steam |system |do |not |heat |up |because: |- |ANSWER- |The |radiator |vents |are
clogged
|
On |a |hot |water |boiler |the |pressure |is |30 |PSI |and |the |relief |valve |is |open |because: |- |ANSWER-
- Leaky |tank |less |coil
- Bad |pressure |reducing |valve
- Perforated |tank |less |bladder
Some |forced |hot-water |radiators |are |not |heating |because: |- |ANSWER- |- |The |vent |is |clogged
- The |radiators |are |air |bound
- The |radiator |valves |are |clogged |shut
A |cad-cell |primary |control |can |lock-out |safety |because: |- |ANSWER- |- |The |cad-cell |is |dirty
- The |cad-cell |is |faulty
- The |cad-cell |is |not |sensing |the |flame
, P | a |g | e | | |4
On |a |no-heat |call, |a |cad-cell |primary |control |fires |when |TT |is |jumped |out |because: |-
ANSWER- |The |thermostat |or |thermostat |wires |are |no |good
|
What |is |the |gauge |of |a |275g |above-ground |tank? |- |ANSWER- |12 |g
True |or |False:
The |maximum |amount |of |fuel |may |be |delivered |without |a |permit |to |store |in |effect |provided |that
application |has |been |made |in |accordance |with |code. |- |ANSWER- |True
|
Vent |pipe |size |for |a |500 |g |tank |should |be: |- |ANSWER- |1-1/4"
True |or |False:
A |supply |tank |may |be |supported |by |any |ridge |support |- |ANSWER- |False
Stack |switch |relays |can |no |longer |be |used |in |installations |or |replacement |because: |-
ANSWER- |Their |lock-out |time |is |no |longer |the |code |requirement
"In-step" |means: |- |ANSWER- |The |primary |control |start |circuit |is |closed
On |a |no |heat |call |on |a |hot |water |system, |the |oil |burner |is |off |on |a |high-limit, |but |the |circulator |is
not |running |because: |- |ANSWER- |- |The |reverse |is |open
|
- The |circulator |motor |is |burned |out
- The |switching |relay |is |faulty
