Mass Oil Burner Test Questions
and Answers 100% PASS
If fuel oil has a milky color, this is an indication of...?—ANSWER-Water in
the oil
What effect does a drop in temperature have on fuel oil?—ANSWER-Raises
viscosity
What is the recommended reading of a cad cell in the light?—ANSWER-less
than 1600 ohms
What is the recommended reading of a cad cell in the dark?—ANSWER-
20,000 ohms
What determines actual firing rate?—ANSWER-Nozzle size and fuel unit
pressure
True or False - The higher the viscosity, the higher the firing rate—
ANSWER-True
True or False - The higher the pump pressure, the better the atomization—
ANSWER-True
, How must an oil burner circuit be protected?—ANSWER-15 amp fuse or
breaker
How would you wire a line voltage thermostat on a steam boiler?—ANSWER-
Series
What are 2 ways we test a stack switch?—ANSWER-pull wire from #3, kill
motor
On a stack switch, what is the terminal 4 wired to?—ANSWER-Ignition
If you have power on the black wire of a primary control and no power on
the orange wire, name 2 possible reasons—ANSWER-Not calling for heat or
bad neutral
What is a cad cell and how does it work?—ANSWER-A visual flame detector
that measures resistance
(800 ohms when running, 1600+ causes lockout)
The primary voltage of a step down transformer is....?—ANSWER-120 volts
120v to 24v
An ignition transformer is an example of...?—ANSWER-Step up transformer
120v to 17000v
A conventional head burner refers to...?—ANSWER-the way the air is
delivered into the combustion chamber
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Katelyn Whitman
and Answers 100% PASS
If fuel oil has a milky color, this is an indication of...?—ANSWER-Water in
the oil
What effect does a drop in temperature have on fuel oil?—ANSWER-Raises
viscosity
What is the recommended reading of a cad cell in the light?—ANSWER-less
than 1600 ohms
What is the recommended reading of a cad cell in the dark?—ANSWER-
20,000 ohms
What determines actual firing rate?—ANSWER-Nozzle size and fuel unit
pressure
True or False - The higher the viscosity, the higher the firing rate—
ANSWER-True
True or False - The higher the pump pressure, the better the atomization—
ANSWER-True
, How must an oil burner circuit be protected?—ANSWER-15 amp fuse or
breaker
How would you wire a line voltage thermostat on a steam boiler?—ANSWER-
Series
What are 2 ways we test a stack switch?—ANSWER-pull wire from #3, kill
motor
On a stack switch, what is the terminal 4 wired to?—ANSWER-Ignition
If you have power on the black wire of a primary control and no power on
the orange wire, name 2 possible reasons—ANSWER-Not calling for heat or
bad neutral
What is a cad cell and how does it work?—ANSWER-A visual flame detector
that measures resistance
(800 ohms when running, 1600+ causes lockout)
The primary voltage of a step down transformer is....?—ANSWER-120 volts
120v to 24v
An ignition transformer is an example of...?—ANSWER-Step up transformer
120v to 17000v
A conventional head burner refers to...?—ANSWER-the way the air is
delivered into the combustion chamber
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Katelyn Whitman
