Kansas Boiler Contractor Examination
— Local Jurisdiction Practice Exam 2026
| 100 Questions & Answers with
Detailed Rationales | Complete Exam
Prep & Study Guide
1. A boiler contractor is preparing to install a new commercial boiler in a
Kansas jurisdiction that requires local mechanical licensing. Which
approach is most appropriate before work begins?
A. Begin installation because the boiler manufacturer has approved the
equipment
B. Obtain only the state boiler inspection certificate
C. Verify the local contractor-license, permit, adopted-code, and inspection
requirements before installation
D. Install the boiler and obtain approval after commissioning
Answer: C. Verify the local contractor-license, permit, adopted-code, and
inspection requirements before installation
,Rationale: Local Kansas jurisdictions may establish licensing, examinations,
codes, standards, inspections, and fees within their jurisdictions. A contractor
must comply with the applicable local requirements in addition to state boiler
requirements.
2. What is the primary purpose of a boiler safety relief valve?
A. Maintain constant burner pressure
B. Control combustion air
C. Prevent boiler pressure from exceeding the valve's allowable set pressure
D. Increase system circulation
Answer: C. Prevent boiler pressure from exceeding the valve's allowable set
pressure
Rationale: The safety or safety-relief valve is a critical pressure-limiting device. It
must be properly sized, installed, and maintained so that excessive pressure
cannot develop beyond the permitted operating limits.
3. A boiler has a maximum allowable working pressure (MAWP) of 150 psi.
Which operating condition presents the greatest immediate concern?
A. Operating at 100 psi
B. Operating at 125 psi
C. Operating at 140 psi
D. Operating above the permitted pressure shown on its inspection certificate
or code documentation
Answer: D. Operating above the permitted pressure shown on its inspection
certificate or code documentation
Rationale: Operating a covered boiler at a pressure exceeding the pressure
specified on its inspection certificate is unlawful under Kansas boiler law.
4. Which document is most useful for determining the original design
limitations of a code-stamped boiler?
,A. Burner service invoice
B. Thermostat instruction sheet
C. Boiler nameplate and applicable construction documentation
D. Fuel supplier invoice
Answer: C. Boiler nameplate and applicable construction documentation
Rationale: The nameplate identifies important design information such as
MAWP, temperature, manufacturer, serial number, and construction-code
information.
5. What is the principal function of a low-water cutoff on a steam boiler?
A. Prevent excessive fuel pressure
B. Increase steam pressure
C. Prevent firing when the water level falls to an unsafe condition
D. Increase feedwater temperature
Answer: C. Prevent firing when the water level falls to an unsafe condition
Rationale: Exposing boiler heating surfaces because of insufficient water can
cause overheating, deformation, tube failure, or catastrophic damage.
6. A boiler repeatedly trips on low water. What should the contractor do first?
A. Permanently bypass the low-water cutoff
B. Increase the cutoff setpoint
C. Determine and correct the cause of the low-water condition before returning
the boiler to service
D. Increase burner input
Answer: C. Determine and correct the cause of the low-water condition before
returning the boiler to service
Rationale: Repeated low-water trips indicate a potentially serious operating or
control problem. Bypassing the safety device removes a critical protection and is
unacceptable.
, 7. Which condition most directly indicates inadequate boiler-water circulation
in a hydronic system?
A. Stable differential pressure
B. Uniform supply temperature
C. Localized overheating or excessive temperature difference across portions of
the heat exchanger
D. Properly operating expansion tank
Answer: C. Localized overheating or excessive temperature difference across
portions of the heat exchanger
Rationale: Insufficient flow can allow heat exchanger surfaces to operate at
excessive temperatures and may cause thermal stress, boiling, or component
damage.
8. In a closed hydronic heating system, what is the primary function of an
expansion tank?
A. Remove combustion products
B. Increase pump horsepower
C. Absorb the increase in water volume caused by heating
D. Maintain burner flame signal
Answer: C. Absorb the increase in water volume caused by heating
Rationale: Water expands as its temperature increases. Without an
appropriately sized expansion tank, system pressure can rise excessively.
9. A diaphragm expansion tank is installed on a closed heating system. What
should be verified before commissioning?
A. Paint color
B. Burner nozzle angle
C. Precharge pressure, tank sizing, system pressure, and connection
arrangement
D. Chimney height only
— Local Jurisdiction Practice Exam 2026
| 100 Questions & Answers with
Detailed Rationales | Complete Exam
Prep & Study Guide
1. A boiler contractor is preparing to install a new commercial boiler in a
Kansas jurisdiction that requires local mechanical licensing. Which
approach is most appropriate before work begins?
A. Begin installation because the boiler manufacturer has approved the
equipment
B. Obtain only the state boiler inspection certificate
C. Verify the local contractor-license, permit, adopted-code, and inspection
requirements before installation
D. Install the boiler and obtain approval after commissioning
Answer: C. Verify the local contractor-license, permit, adopted-code, and
inspection requirements before installation
,Rationale: Local Kansas jurisdictions may establish licensing, examinations,
codes, standards, inspections, and fees within their jurisdictions. A contractor
must comply with the applicable local requirements in addition to state boiler
requirements.
2. What is the primary purpose of a boiler safety relief valve?
A. Maintain constant burner pressure
B. Control combustion air
C. Prevent boiler pressure from exceeding the valve's allowable set pressure
D. Increase system circulation
Answer: C. Prevent boiler pressure from exceeding the valve's allowable set
pressure
Rationale: The safety or safety-relief valve is a critical pressure-limiting device. It
must be properly sized, installed, and maintained so that excessive pressure
cannot develop beyond the permitted operating limits.
3. A boiler has a maximum allowable working pressure (MAWP) of 150 psi.
Which operating condition presents the greatest immediate concern?
A. Operating at 100 psi
B. Operating at 125 psi
C. Operating at 140 psi
D. Operating above the permitted pressure shown on its inspection certificate
or code documentation
Answer: D. Operating above the permitted pressure shown on its inspection
certificate or code documentation
Rationale: Operating a covered boiler at a pressure exceeding the pressure
specified on its inspection certificate is unlawful under Kansas boiler law.
4. Which document is most useful for determining the original design
limitations of a code-stamped boiler?
,A. Burner service invoice
B. Thermostat instruction sheet
C. Boiler nameplate and applicable construction documentation
D. Fuel supplier invoice
Answer: C. Boiler nameplate and applicable construction documentation
Rationale: The nameplate identifies important design information such as
MAWP, temperature, manufacturer, serial number, and construction-code
information.
5. What is the principal function of a low-water cutoff on a steam boiler?
A. Prevent excessive fuel pressure
B. Increase steam pressure
C. Prevent firing when the water level falls to an unsafe condition
D. Increase feedwater temperature
Answer: C. Prevent firing when the water level falls to an unsafe condition
Rationale: Exposing boiler heating surfaces because of insufficient water can
cause overheating, deformation, tube failure, or catastrophic damage.
6. A boiler repeatedly trips on low water. What should the contractor do first?
A. Permanently bypass the low-water cutoff
B. Increase the cutoff setpoint
C. Determine and correct the cause of the low-water condition before returning
the boiler to service
D. Increase burner input
Answer: C. Determine and correct the cause of the low-water condition before
returning the boiler to service
Rationale: Repeated low-water trips indicate a potentially serious operating or
control problem. Bypassing the safety device removes a critical protection and is
unacceptable.
, 7. Which condition most directly indicates inadequate boiler-water circulation
in a hydronic system?
A. Stable differential pressure
B. Uniform supply temperature
C. Localized overheating or excessive temperature difference across portions of
the heat exchanger
D. Properly operating expansion tank
Answer: C. Localized overheating or excessive temperature difference across
portions of the heat exchanger
Rationale: Insufficient flow can allow heat exchanger surfaces to operate at
excessive temperatures and may cause thermal stress, boiling, or component
damage.
8. In a closed hydronic heating system, what is the primary function of an
expansion tank?
A. Remove combustion products
B. Increase pump horsepower
C. Absorb the increase in water volume caused by heating
D. Maintain burner flame signal
Answer: C. Absorb the increase in water volume caused by heating
Rationale: Water expands as its temperature increases. Without an
appropriately sized expansion tank, system pressure can rise excessively.
9. A diaphragm expansion tank is installed on a closed heating system. What
should be verified before commissioning?
A. Paint color
B. Burner nozzle angle
C. Precharge pressure, tank sizing, system pressure, and connection
arrangement
D. Chimney height only
