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MASS OIL BURNER / NFPA 31 & NORA
EXAM BRAND NEW OFFICIAL QUESTIONS
WITH ANSWERS.
1. Stack temp should be how high to avoid condensation - correct
answer -Atleast 350F
2. Max temp that the stack temperature should reach - correct
answer -750F
3. High c02 indicated - correct answer -Rich air or fuel mixture
4. Good over fire draft is - correct answer --0.01 to -0.03
5. Good breech draft is - correct answer --0.04 to -0.07
6. Conductors - correct answer -Circuit wiring, switches and other
devices. Copper, gold, mercury and silver are conductors.
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7. High limit is always wired - correct answer -Line voltage in
series with the primary control.
8. If cieling is higher than 10 feet the firematic must be - correct
answer -Within 6 feet of the appliance
9. Oil filter can be located at the - correct answer -Tank burner or
both
10. Outside oil lines must be connected - correct answer -To the
top of the tank and insulated. Fusible valve on the inside.
11. Bypass plug is installed in - correct answer -Two pipe
systems
12. When testing fuel unit cutoff - correct answer -Pressure
should drop and hold
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13. NFPA31 limits shaft seal psi to - correct answer -3psi even
though most can handle 10psi
14. Pressure gauge goes in what port - correct answer -Nozzle
port
15. Nozzles three main functions - correct answer -Atomize
16. Metering
17. Patterning
18. Direct venting - correct answer -Uses the burner to push flue
gases
19. Gallon of fuel oil contains - correct answer -140,000 BTU's
20. Low combustion air will cause - correct answer -Smoke
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21. The lower the stack temp the more - correct answer -
Efficient the boiler is running
22. Tank rating must be - correct answer -UL-80
23. Oil burners electrically controlled must be - correct answer -
Supplies from a separate branch circuit located at the service
disconnect panel, or branch circuit sub panel
24. Electrical thermal switch must be within - correct answer -6
feet of the top of the boiler or furnace
25. If ceiling exceeds 12 feet, second switch must be installed at
- correct answer -10 feet wired in series with the lower switch
26. What is air - correct answer -20.9% oxygen, 78% nitrogen,
1.1% other gases
MASS OIL BURNER / NFPA 31 & NORA
EXAM BRAND NEW OFFICIAL QUESTIONS
WITH ANSWERS.
1. Stack temp should be how high to avoid condensation - correct
answer -Atleast 350F
2. Max temp that the stack temperature should reach - correct
answer -750F
3. High c02 indicated - correct answer -Rich air or fuel mixture
4. Good over fire draft is - correct answer --0.01 to -0.03
5. Good breech draft is - correct answer --0.04 to -0.07
6. Conductors - correct answer -Circuit wiring, switches and other
devices. Copper, gold, mercury and silver are conductors.
, Page | 2
7. High limit is always wired - correct answer -Line voltage in
series with the primary control.
8. If cieling is higher than 10 feet the firematic must be - correct
answer -Within 6 feet of the appliance
9. Oil filter can be located at the - correct answer -Tank burner or
both
10. Outside oil lines must be connected - correct answer -To the
top of the tank and insulated. Fusible valve on the inside.
11. Bypass plug is installed in - correct answer -Two pipe
systems
12. When testing fuel unit cutoff - correct answer -Pressure
should drop and hold
, Page | 3
13. NFPA31 limits shaft seal psi to - correct answer -3psi even
though most can handle 10psi
14. Pressure gauge goes in what port - correct answer -Nozzle
port
15. Nozzles three main functions - correct answer -Atomize
16. Metering
17. Patterning
18. Direct venting - correct answer -Uses the burner to push flue
gases
19. Gallon of fuel oil contains - correct answer -140,000 BTU's
20. Low combustion air will cause - correct answer -Smoke
, Page | 4
21. The lower the stack temp the more - correct answer -
Efficient the boiler is running
22. Tank rating must be - correct answer -UL-80
23. Oil burners electrically controlled must be - correct answer -
Supplies from a separate branch circuit located at the service
disconnect panel, or branch circuit sub panel
24. Electrical thermal switch must be within - correct answer -6
feet of the top of the boiler or furnace
25. If ceiling exceeds 12 feet, second switch must be installed at
- correct answer -10 feet wired in series with the lower switch
26. What is air - correct answer -20.9% oxygen, 78% nitrogen,
1.1% other gases
