1. What is the maximum working pressure for a low-pressure heating
boiler?
o A) 15 psi
o B) 30 psi
o C) 160 psi
o D) 250 psi
o ANSWER : A) 15 psi
2. According to ASME Section IV, what is the maximum temperature
for low-pressure heating boilers?
o A) 212°F
o B) 250°F
o C) 300°F
o D) 350°F
o ANSWER : B) 250°F
3. What is the minimum clearance required between a boiler and
combustible materials?
o A) 6 inches
o B) 12 inches
o C) 18 inches
o D) As specified by manufacturer
o ANSWER : D) As specified by manufacturer
4. Which code governs the installation of heating boilers?
, o A) ASME Section I
o B) ASME Section IV
o C) ASME Section VIII
o D) NFPA 70
o ANSWER : B) ASME Section IV
5. What safety device is required on all steam heating boilers?
o A) Pressure relief valve
o B) Low water cutoff
o C) Pressure gauge
o D) All of the above
o ANSWER : D) All of the above
6. The relief valve on a hot water heating boiler must be set at or below
what pressure?
o A) 15 psi
o B) 30 psi
o C) 50 psi
o D) 100 psi
o ANSWER : B) 30 psi
7. What is the purpose of a low water cutoff?
o A) To maintain water level
o B) To shut down boiler when water is too low
o C) To add makeup water
o D) To control temperature
o ANSWER : B) To shut down boiler when water is too low
8. How often should a pressure relief valve be tested?
o A) Daily
o B) Weekly
o C) Monthly
, o D) Annually
o ANSWER : D) Annually
9. What type of piping material is NOT acceptable for steam lines?
o A) Black steel
o B) Copper (Type L)
o C) PVC
o D) Schedule 40 steel
o ANSWER : C) PVC
10.The Hartford Loop is used to prevent what condition?
o A) High pressure
o B) Low water
o C) Backflow
o D) Steam hammer
o ANSWER : B) Low water
11.What is the minimum size for a boiler room access door?
o A) 24" x 36"
o B) 30" x 60"
o C) 36" x 72"
o D) 48" x 84"
o ANSWER : B) 30" x 60"
12.Which gas has the highest heating value per cubic foot?
o A) Natural gas
o B) Propane
o C) Butane
o D) Methane
o ANSWER : B) Propane
13.What is the purpose of a flame safeguard control?
, o A) To ignite the burner
o B) To prevent fuel flow without flame
o C) To control temperature
o D) To maintain pressure
o ANSWER : B) To prevent fuel flow without flame
14.The expansion tank in a hot water system must be sized for what
percentage of system volume?
o A) 5%
o B) 10%
o C) Based on temperature rise
o D) 25%
o ANSWER : C) Based on temperature rise
15.What is the maximum allowable lift for a safety valve discharge
pipe?
o A) 6 feet
o B) 10 feet
o C) No maximum
o D) 4 feet
o ANSWER : D) 4 feet
16.Boiler blowdown is performed to:
o A) Remove sediment and impurities
o B) Test safety valves
o C) Cool the boiler
o D) Add chemicals
o ANSWER : A) Remove sediment and impurities
17.What minimum distance must a gas-fired boiler be from an electrical
panel?
o A) 12 inches
boiler?
o A) 15 psi
o B) 30 psi
o C) 160 psi
o D) 250 psi
o ANSWER : A) 15 psi
2. According to ASME Section IV, what is the maximum temperature
for low-pressure heating boilers?
o A) 212°F
o B) 250°F
o C) 300°F
o D) 350°F
o ANSWER : B) 250°F
3. What is the minimum clearance required between a boiler and
combustible materials?
o A) 6 inches
o B) 12 inches
o C) 18 inches
o D) As specified by manufacturer
o ANSWER : D) As specified by manufacturer
4. Which code governs the installation of heating boilers?
, o A) ASME Section I
o B) ASME Section IV
o C) ASME Section VIII
o D) NFPA 70
o ANSWER : B) ASME Section IV
5. What safety device is required on all steam heating boilers?
o A) Pressure relief valve
o B) Low water cutoff
o C) Pressure gauge
o D) All of the above
o ANSWER : D) All of the above
6. The relief valve on a hot water heating boiler must be set at or below
what pressure?
o A) 15 psi
o B) 30 psi
o C) 50 psi
o D) 100 psi
o ANSWER : B) 30 psi
7. What is the purpose of a low water cutoff?
o A) To maintain water level
o B) To shut down boiler when water is too low
o C) To add makeup water
o D) To control temperature
o ANSWER : B) To shut down boiler when water is too low
8. How often should a pressure relief valve be tested?
o A) Daily
o B) Weekly
o C) Monthly
, o D) Annually
o ANSWER : D) Annually
9. What type of piping material is NOT acceptable for steam lines?
o A) Black steel
o B) Copper (Type L)
o C) PVC
o D) Schedule 40 steel
o ANSWER : C) PVC
10.The Hartford Loop is used to prevent what condition?
o A) High pressure
o B) Low water
o C) Backflow
o D) Steam hammer
o ANSWER : B) Low water
11.What is the minimum size for a boiler room access door?
o A) 24" x 36"
o B) 30" x 60"
o C) 36" x 72"
o D) 48" x 84"
o ANSWER : B) 30" x 60"
12.Which gas has the highest heating value per cubic foot?
o A) Natural gas
o B) Propane
o C) Butane
o D) Methane
o ANSWER : B) Propane
13.What is the purpose of a flame safeguard control?
, o A) To ignite the burner
o B) To prevent fuel flow without flame
o C) To control temperature
o D) To maintain pressure
o ANSWER : B) To prevent fuel flow without flame
14.The expansion tank in a hot water system must be sized for what
percentage of system volume?
o A) 5%
o B) 10%
o C) Based on temperature rise
o D) 25%
o ANSWER : C) Based on temperature rise
15.What is the maximum allowable lift for a safety valve discharge
pipe?
o A) 6 feet
o B) 10 feet
o C) No maximum
o D) 4 feet
o ANSWER : D) 4 feet
16.Boiler blowdown is performed to:
o A) Remove sediment and impurities
o B) Test safety valves
o C) Cool the boiler
o D) Add chemicals
o ANSWER : A) Remove sediment and impurities
17.What minimum distance must a gas-fired boiler be from an electrical
panel?
o A) 12 inches
