NFI test questions and answers graded A+ latest
updated
1. Which fuel type has a lower ignition tempera- Propane ignites between
920-1,120 de-
ture? grees Fahrenheit
while natural gas ignites at 1,150 de-
grees Fahrenheit
2. What is the significance of the Propane falls and collects in lower areas of
differences in specific gravity appliance or room
between natural gas and propane?
while natural gas rises into the atmos-
phere
3. What added safety feature is on all Oxygen depletion system (ODS) that
unvented gas appliances that is not works with safety shutott valve to
found on vented appliances? stop fuel flow in event of low
oxygen levels
4. Which is a chemical compound with a
strong pungent odor that occurs in Aldehydes
incomplete or interrupted
combustion?
5. Which of the following must be Heat
present in order for natural gas or
propane to ignite?
16" rise and 14" run
6. According to the chart below, I have
listed
four configurations one being invalid. Do you - 9' rise and 10' run
understand this - 10'' rise and 14' run (invalid)
graph? -4' rise and 4' run
1/
14
, NFI test questions and answers graded A+ latest
updated
2/
14
updated
1. Which fuel type has a lower ignition tempera- Propane ignites between
920-1,120 de-
ture? grees Fahrenheit
while natural gas ignites at 1,150 de-
grees Fahrenheit
2. What is the significance of the Propane falls and collects in lower areas of
differences in specific gravity appliance or room
between natural gas and propane?
while natural gas rises into the atmos-
phere
3. What added safety feature is on all Oxygen depletion system (ODS) that
unvented gas appliances that is not works with safety shutott valve to
found on vented appliances? stop fuel flow in event of low
oxygen levels
4. Which is a chemical compound with a
strong pungent odor that occurs in Aldehydes
incomplete or interrupted
combustion?
5. Which of the following must be Heat
present in order for natural gas or
propane to ignite?
16" rise and 14" run
6. According to the chart below, I have
listed
four configurations one being invalid. Do you - 9' rise and 10' run
understand this - 10'' rise and 14' run (invalid)
graph? -4' rise and 4' run
1/
14
, NFI test questions and answers graded A+ latest
updated
2/
14
