Massachusetts Oil burner
Practice Exam Questions and
Answers 100% PASS
The cross connection between two supply tanks shall not exceed?—
ANSWER-660 gallons
When is an automatic draft control not required?—ANSWER-When the
equipment is designed to control the draft.
Combustion performance testing can indicate:—ANSWER-Improper air oil
mixture, too much combustion air, and low pump pressure.
If a second oil-burning appliance is installed in a single chimney, you must
insure:—ANSWER-Sufficient draft is available for safe operation of all
connected equipment.
Delayed ignition can be caused by:—ANSWER-Weak ignition transformer
You should replace the oil burner nozzle with:—ANSWER-The
manufacturers recommended nozzle spray pattern and spray angle.
Viscosity problems can be corrected by:—ANSWER-Decreasing the nozzle
size and increasing the pump pressure accordingly
, The minimum operating pressure of an oil pump is:—ANSWER-100 PSI
If a stack relay fails you, must?—ANSWER-Replace it with an approved type
controller
Aquastats are normally found on what type of heating systems?—ANSWER-
Hydronic
Airstats are found on what type of heating systems?—ANSWER-Forced
warm air systems
Under sized returns on a warm air system can result in what?—ANSWER-
Short cycling of the oil burner
Incorrect nozzle selection in regards to gallon per hour, can result in what
problems in a steam system?—ANSWER-Some radiators not heating quickly
enough
Low boiler water temperature in a hydronic hot water system may be caused
by?—ANSWER-Undersized oil burner nozzles
Delayed opening oil valves are used to?—ANSWER-Allow oil pump to come
up to speed
If a steam boiler is to be installed with an automatic feeder it must also
have:—ANSWER-A backflow prevention device
How can a damaged heat exchanger be detected on a forced warm air
system?—ANSWER-With a smoke trace candle
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Katelyn Whitman
Practice Exam Questions and
Answers 100% PASS
The cross connection between two supply tanks shall not exceed?—
ANSWER-660 gallons
When is an automatic draft control not required?—ANSWER-When the
equipment is designed to control the draft.
Combustion performance testing can indicate:—ANSWER-Improper air oil
mixture, too much combustion air, and low pump pressure.
If a second oil-burning appliance is installed in a single chimney, you must
insure:—ANSWER-Sufficient draft is available for safe operation of all
connected equipment.
Delayed ignition can be caused by:—ANSWER-Weak ignition transformer
You should replace the oil burner nozzle with:—ANSWER-The
manufacturers recommended nozzle spray pattern and spray angle.
Viscosity problems can be corrected by:—ANSWER-Decreasing the nozzle
size and increasing the pump pressure accordingly
, The minimum operating pressure of an oil pump is:—ANSWER-100 PSI
If a stack relay fails you, must?—ANSWER-Replace it with an approved type
controller
Aquastats are normally found on what type of heating systems?—ANSWER-
Hydronic
Airstats are found on what type of heating systems?—ANSWER-Forced
warm air systems
Under sized returns on a warm air system can result in what?—ANSWER-
Short cycling of the oil burner
Incorrect nozzle selection in regards to gallon per hour, can result in what
problems in a steam system?—ANSWER-Some radiators not heating quickly
enough
Low boiler water temperature in a hydronic hot water system may be caused
by?—ANSWER-Undersized oil burner nozzles
Delayed opening oil valves are used to?—ANSWER-Allow oil pump to come
up to speed
If a steam boiler is to be installed with an automatic feeder it must also
have:—ANSWER-A backflow prevention device
How can a damaged heat exchanger be detected on a forced warm air
system?—ANSWER-With a smoke trace candle
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Katelyn Whitman
