OIL BURNER LICENSE EXAM AND PRACTICE
EXAM NEWEST ACTUAL EXAM COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+
.#2 fuel oil stored in outside above ground storage tanks in cold climates can cause: - ANSWER--Waxing
-Higher CO2 levels
-Soot
.A "sealed and insulated chimney system" requires: - ANSWER-High static burner
.A burner in a confined space using 1 GPH of #2 fuel oil requires what size permanent opening for combustion
air? - ANSWER-140"
.A common breach draft for an oil appliance is: - ANSWER--.03 to -.06
.A common over the fire draft for an oil appliances - ANSWER--.01 to -.02
.A common source of air leakage into the chimney is: - ANSWER-Loose fitting clean out door at base of chimney
.A condition often overlooked on a call involving odors is: - ANSWER-Insufficient air in the boiler room
.A fuel oil storage tank cannot be installed: - ANSWER-In the furnace room within 5 feet of the heating unit
,.A high CO2 reading is caused by.. - ANSWER-Incomplete combustion
.A layer of soot 1/16" thick will increase fuel consumption by: - ANSWER-4%
.A material with electrons so loose it allows voltage to pass with little or no resistance.. - ANSWER-Is a
conductor
.A method of dealing with low viscosity/cold temps with #2 oil? - ANSWER-Increase pump pressure/ decrease
nozzle size
.A one-pipe system: - ANSWER-Must NOT have the bypass plug inserted in the pump.
.A properly set up and adjusted oil fire appliance should produce a CO2 measurement of: - ANSWER-10% to
12%
.A pump in a one pipe system that is full of air can be self purged. - ANSWER-False
.A reverse acting aquastat is used in a hydronic system to: - ANSWER-Stop the circulator when the water
temperature falls below a preset temperature
.A significant difference between the CO2 or O2 reading at the flue pipe and over the fire is indication of: -
ANSWER-Air leakage in the boiler
.A simple, effective, yet inexpensive way to increase on-cycle system efficiency is to: - ANSWER-Match the
nozzle to the heating load
.A single stationary conductor in the flux of a permanent magnet will: - ANSWER--NOT induce a current flow in
the conductor
, -NOT reverse the current flow in the conductor
-NOT increase the amperage in the conductor
.A stack switch is no longer allowed to be installed or replaced because.. - ANSWER-It's safety cutout time is
higher than what is now required.
.A stack thermometer commonly has a range from: - ANSWER-200° to 1000°
.A steam pigtail should always be installed between the pressuretrol and the boiler to: - ANSWER-Place a water
seal between the boiler and the pressuretrol
.A technician is servicing an oil fired appliance that uses a cad cell primary control. The control locks out after a
brief period of time. Which of the following can cause this to happen? - ANSWER-The cad cell does not sense
light.
.A typical ignition transformer is of what type? - ANSWER-Step-up
.A typical residential zone valve for a hot water heating system normally operates on: - ANSWER-24 volts
.A zero smoke and low CO2 or high O2 reading could be caused by: - ANSWER-Too much excess air
.According to NFPA 31-2001, what is the minimum size of the fill pipe on an oil storage tank? - ANSWER-1 1/4"
.Air is composed of oxygen and nitrogen in what percentages? - ANSWER-21 and 79
.An acceptable smoke test reading for new modern equipment is: - ANSWER-Between #0 and #1
.An advantage of power venting is: - ANSWER--Installing an oil fired unit where there is no chimney
EXAM NEWEST ACTUAL EXAM COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+
.#2 fuel oil stored in outside above ground storage tanks in cold climates can cause: - ANSWER--Waxing
-Higher CO2 levels
-Soot
.A "sealed and insulated chimney system" requires: - ANSWER-High static burner
.A burner in a confined space using 1 GPH of #2 fuel oil requires what size permanent opening for combustion
air? - ANSWER-140"
.A common breach draft for an oil appliance is: - ANSWER--.03 to -.06
.A common over the fire draft for an oil appliances - ANSWER--.01 to -.02
.A common source of air leakage into the chimney is: - ANSWER-Loose fitting clean out door at base of chimney
.A condition often overlooked on a call involving odors is: - ANSWER-Insufficient air in the boiler room
.A fuel oil storage tank cannot be installed: - ANSWER-In the furnace room within 5 feet of the heating unit
,.A high CO2 reading is caused by.. - ANSWER-Incomplete combustion
.A layer of soot 1/16" thick will increase fuel consumption by: - ANSWER-4%
.A material with electrons so loose it allows voltage to pass with little or no resistance.. - ANSWER-Is a
conductor
.A method of dealing with low viscosity/cold temps with #2 oil? - ANSWER-Increase pump pressure/ decrease
nozzle size
.A one-pipe system: - ANSWER-Must NOT have the bypass plug inserted in the pump.
.A properly set up and adjusted oil fire appliance should produce a CO2 measurement of: - ANSWER-10% to
12%
.A pump in a one pipe system that is full of air can be self purged. - ANSWER-False
.A reverse acting aquastat is used in a hydronic system to: - ANSWER-Stop the circulator when the water
temperature falls below a preset temperature
.A significant difference between the CO2 or O2 reading at the flue pipe and over the fire is indication of: -
ANSWER-Air leakage in the boiler
.A simple, effective, yet inexpensive way to increase on-cycle system efficiency is to: - ANSWER-Match the
nozzle to the heating load
.A single stationary conductor in the flux of a permanent magnet will: - ANSWER--NOT induce a current flow in
the conductor
, -NOT reverse the current flow in the conductor
-NOT increase the amperage in the conductor
.A stack switch is no longer allowed to be installed or replaced because.. - ANSWER-It's safety cutout time is
higher than what is now required.
.A stack thermometer commonly has a range from: - ANSWER-200° to 1000°
.A steam pigtail should always be installed between the pressuretrol and the boiler to: - ANSWER-Place a water
seal between the boiler and the pressuretrol
.A technician is servicing an oil fired appliance that uses a cad cell primary control. The control locks out after a
brief period of time. Which of the following can cause this to happen? - ANSWER-The cad cell does not sense
light.
.A typical ignition transformer is of what type? - ANSWER-Step-up
.A typical residential zone valve for a hot water heating system normally operates on: - ANSWER-24 volts
.A zero smoke and low CO2 or high O2 reading could be caused by: - ANSWER-Too much excess air
.According to NFPA 31-2001, what is the minimum size of the fill pipe on an oil storage tank? - ANSWER-1 1/4"
.Air is composed of oxygen and nitrogen in what percentages? - ANSWER-21 and 79
.An acceptable smoke test reading for new modern equipment is: - ANSWER-Between #0 and #1
.An advantage of power venting is: - ANSWER--Installing an oil fired unit where there is no chimney
