NORA Oil Heat Reviewed 2026-2027
Comprehensive Frequently Tested Questions
With Verified Multiple Choice and Conceptual
Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. Co2 "red fluid" is good for how many tests?
A)100
B)200
C)300
D)400 - ANSWER B)200
2. A Co2 test indicates
A) Smoke
B) Complete Combustion
C)Excess Air
D)Carbon Monoxide - ANSWER C)Excess Air
3. If you measure a 10% Co2 in the breech and a 12% over the fire, there must be
an air leak in the boiler.
A)T
,B)F - ANSWER A)T
4. Should a smoke test be done "before" or after using an electronic analyzer? -
ANSWER Before (so that you don't draw a lot of carbon into the sensitive
electronic parts)
5. Must heating appliances have their own branch circuit?
A)Yes
B)No - ANSWER Yes
6. If a thermostat has an anticipator, what should its setting match?
A)Burner current
B)Control current
C)Ignitor current - ANSWER B)Control (thermostat) current
7. An E.C.M motor is just like a PSC has a start switch - ANSWER Variable
Speed
8. What does post purge (motor off delay) help with?
A) Clean startup
B) Clean shutdown
C) Forming good air pattern - ANSWER B) Clean Shutdown
9. A reverse acting aquastat
,A) Turns boiler off on temp increase
B) Turns boiler on with temp increase
C) Turns circulator off on water temp drop - ANSWER Turns circulator off when
boiler gets too cool
10. What problems are created by a dirty furnace air filter?
A) Indoor air pollution
B) High stack temp
C) Low supply air temp - ANSWER High stack temp (less air over the heat
exchanger)
11. What is B5?
A) 5% biofuel
B)5% petroleum
C)#5 Oil - ANSWER 5% bio
12. What is not a cause of positive breech draft?
A) Blocked Chimney
B) Dirty Fan
C) Reduced vent size
D) Too many flue pipe elbows - ANSWER Dirty Fan
13. What do you adjust to treat high draft?
, A) Air Shutter
B) Chimney Height
C)Draft Regulator
D)Barometric Damper - ANSWER Draft Regulator
14. Fuel oil completely burns when lit with a match at the "flash point"
temperature
A)T
B)F - ANSWER B)F
15. What will not help with "gelled oil tank"?
A) Kerosene
B) Chemical Treatment
C) Added Water - ANSWER Added Water
16. A fuel pump's loose "cone valve" will cause pulsation of the flame?
A)T
B)F - ANSWER A)T
17. If run time increases, the "off-cycle loss" is likely to
A) Increase
B) Decrease
C) Stay the same - ANSWER Decrease
Comprehensive Frequently Tested Questions
With Verified Multiple Choice and Conceptual
Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. Co2 "red fluid" is good for how many tests?
A)100
B)200
C)300
D)400 - ANSWER B)200
2. A Co2 test indicates
A) Smoke
B) Complete Combustion
C)Excess Air
D)Carbon Monoxide - ANSWER C)Excess Air
3. If you measure a 10% Co2 in the breech and a 12% over the fire, there must be
an air leak in the boiler.
A)T
,B)F - ANSWER A)T
4. Should a smoke test be done "before" or after using an electronic analyzer? -
ANSWER Before (so that you don't draw a lot of carbon into the sensitive
electronic parts)
5. Must heating appliances have their own branch circuit?
A)Yes
B)No - ANSWER Yes
6. If a thermostat has an anticipator, what should its setting match?
A)Burner current
B)Control current
C)Ignitor current - ANSWER B)Control (thermostat) current
7. An E.C.M motor is just like a PSC has a start switch - ANSWER Variable
Speed
8. What does post purge (motor off delay) help with?
A) Clean startup
B) Clean shutdown
C) Forming good air pattern - ANSWER B) Clean Shutdown
9. A reverse acting aquastat
,A) Turns boiler off on temp increase
B) Turns boiler on with temp increase
C) Turns circulator off on water temp drop - ANSWER Turns circulator off when
boiler gets too cool
10. What problems are created by a dirty furnace air filter?
A) Indoor air pollution
B) High stack temp
C) Low supply air temp - ANSWER High stack temp (less air over the heat
exchanger)
11. What is B5?
A) 5% biofuel
B)5% petroleum
C)#5 Oil - ANSWER 5% bio
12. What is not a cause of positive breech draft?
A) Blocked Chimney
B) Dirty Fan
C) Reduced vent size
D) Too many flue pipe elbows - ANSWER Dirty Fan
13. What do you adjust to treat high draft?
, A) Air Shutter
B) Chimney Height
C)Draft Regulator
D)Barometric Damper - ANSWER Draft Regulator
14. Fuel oil completely burns when lit with a match at the "flash point"
temperature
A)T
B)F - ANSWER B)F
15. What will not help with "gelled oil tank"?
A) Kerosene
B) Chemical Treatment
C) Added Water - ANSWER Added Water
16. A fuel pump's loose "cone valve" will cause pulsation of the flame?
A)T
B)F - ANSWER A)T
17. If run time increases, the "off-cycle loss" is likely to
A) Increase
B) Decrease
C) Stay the same - ANSWER Decrease
