Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Massachusetts Oil Burner License Exam Prep: 2025/2026 Practice Questions, Exams of Oil Engineering

A comprehensive set of practice questions and verified answers for the massachusetts oil burner license exam for the years 2025/2026. It covers essential topics related to oil burner systems, including stack temperature, oil storage permits, primary control functions, safety mechanisms, and various operational parameters. The questions address key aspects of oil burner installation, maintenance, and troubleshooting, making it a valuable resource for exam preparation and practical knowledge enhancement. This study guide is designed to help students and professionals master the fundamentals of oil burner technology and safety regulations. It includes detailed explanations and correct answers to help users understand the underlying principles and best practices in the field. The material is structured to facilitate effective learning and retention, ensuring that users are well-prepared for the licensing exam and real-world applications.

Typology: Exams

2024/2025

Available from 05/28/2025

BESTOFLUCK
BESTOFLUCK šŸ‡ŗšŸ‡ø

4.2

(5)

2.1K documents

1 / 50

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
MASSACHUSETTS OIL BURNER LICENSE EXAM 2025/2026
UPDATE/PRACTICE QUESTIONS AND CORRECT VERIFIED
ANSWERS (complete solutions) /GRADED A+!!!
What is the minimum stack temperature which will allow a stack switch to work? -
CORRECT ANSWER-400 degrees F
When do you apply a permit to store oil? - CORRECT ANSWER-10 gallons.
What is the "Main" function of an oil burner Primary Control? - CORRECT
ANSWER-Prove Flame.
Stack Relay must be reset after lockout? True? or False? - CORRECT ANSWER-
True.
What is the Required minimum height required for fill and vent pipes? -
CORRECT ANSWER-3 Feet.
What are the 3 funtions of an Oil Burner nozzle? - CORRECT ANSWER-Atomize,
Meter, Patter.
pf3
pf4
pf5
pf8
pf9
pfa
pfd
pfe
pff
pf12
pf13
pf14
pf15
pf16
pf17
pf18
pf19
pf1a
pf1b
pf1c
pf1d
pf1e
pf1f
pf20
pf21
pf22
pf23
pf24
pf25
pf26
pf27
pf28
pf29
pf2a
pf2b
pf2c
pf2d
pf2e
pf2f
pf30
pf31
pf32

Partial preview of the text

Download Massachusetts Oil Burner License Exam Prep: 2025/2026 Practice Questions and more Exams Oil Engineering in PDF only on Docsity!

MASSACHUSETTS OIL BURNER LICENSE EXAM 2025/

UPDATE/PRACTICE QUESTIONS AND CORRECT VERIFIED

ANSWERS (complete solutions) /GRADED A+!!!

What is the minimum stack temperature which will allow a stack switch to work? -

CORRECT ANSWER- 400 degrees F

When do you apply a permit to store oil? - CORRECT ANSWER- 10 gallons.

What is the "Main" function of an oil burner Primary Control? - CORRECT

ANSWER- Prove Flame.

Stack Relay must be reset after lockout? True? or False? - CORRECT ANSWER-

True.

What is the Required minimum height required for fill and vent pipes? -

CORRECT ANSWER- 3 Feet.

What are the 3 funtions of an Oil Burner nozzle? - CORRECT ANSWER- Atomize,

Meter, Patter.

What are the 2 voltage circuits of a primary control? - CORRECT ANSWER- Line &

Low.

What is the function of a fuse? - CORRECT ANSWER- Protect circuit.

What is the High Limit cut out? - CORRECT ANSWER- Max safe Temp or Pressure

setting.

What is the High Limit cut in? - CORRECT ANSWER- Cut out minus Differential.

What is the "Max" Lockout time for a burner with a 3 GPH Flow Rate? - CORRECT

ANSWER- 45 Seconds.

What is the smallest vent pipe used for residential. - CORRECT ANSWER- 1 inch

What size is the oil line for a residential burner? - CORRECT ANSWER- 3/

Largest oil capacity for residential without a license? - CORRECT ANSWER-

10,000 Gallons

At what height ceiling would a second thermal switch be required? - CORRECT

ANSWER- 12'

How many cubic feet of Air is required for a 1 gallon nozzle? - CORRECT

ANSWER- 1,

If a power vent fails to start or shuts down during operation, will this affect the

burner? Yes? Or No? - CORRECT ANSWER- Yes

A Hot Water Boiler needs a low water cut off if over 300,000 B.T.U's? - CORRECT

ANSWER- False

What is the proper draft setting for an oil burner? - CORRECT ANSWER-.

Inches WC

Taco Zones Valves draw .9 Amps? True? Or False? - CORRECT ANSWER- True

What device sees flame failure and causes it to lockout? - CORRECT ANSWER-

Cad Cell A boiler has been flooded by recent rain. What would be the most common

problem for a burner as a result - CORRECT ANSWER- Electrical damage

What is the minimum size of pipping for copper and black pipe in a residential

installation? - CORRECT ANSWER- 3/8 unless over 100 ft

If you increased the air on a burner what would happen to the Co2 Reading? -

CORRECT ANSWER- It would go down

If you increased the air on a burner what would happen to stack temperature? -

CORRECT ANSWER- It would go up

Give 2 reasons why draft is necessary? - CORRECT ANSWER- Remove flu gasses

& efficiency.

Would an increase in excess air raise or lower the stack temp? - CORRECT

ANSWER- Raise

Where should a hot water temp operating control not be located? - CORRECT

ANSWER- Away from the tankless coil

What are the requirements for pressure controls for boilers? - CORRECT

ANSWER- Line Voltage, ( Max 15 psi ) , Mounted on pigtail, and above water line.

What info on an oil burner certifies it has been approved by the Marshall? -

CORRECT ANSWER- Mass Approval

What is a scavenger period? - CORRECT ANSWER- Pre + Post Purge

What are two methods used by domestic oil burners to prepare oil for

combustion. - CORRECT ANSWER- Atomize & Vaporize

What info must be given when buying a new pump? - CORRECT ANSWER-

Rpm's, rotation, inlet port, outlet port, and stage of pump?

Name 3 causes of delayed ignition? - CORRECT ANSWER- Weak Transformer,

Bad Electrodes, and bad spray pattern/clogged nozzle

What is the voltage output of an ignition transformer? - CORRECT ANSWER-

10,000 Standard & 14,000 Rotary

What determines the GPH of a nozzle? - CORRECT ANSWER- The Orriface

Inner parts of a nozzle can be changed? True? Or False? - CORRECT ANSWER-

False. You never change the inner parts of a nozzle

What do we mean by differential with regards to a pressure trol? - CORRECT

ANSWER- Cut out & Cut in

How many BTU's in a Gallon of #2 fuel oil? - CORRECT ANSWER- 140,000 Btu's

How is an electrical solenoid valve wired and where is it installed? - CORRECT

ANSWER- Wired in parallel & installed to the motor

What is a series circuit? - CORRECT ANSWER- One path for electrons to flow

What is a camium sulfide cell? - CORRECT ANSWER- A visual Flame detector

How would you test the safety timing on a stack switch? - CORRECT ANSWER-

Disconnect T 3

Can material other then steel be used for construction of a light fuel oil tank? -

CORRECT ANSWER- Yes if Approved

What are the requirements when installing two tanks together to a common

supply line? - CORRECT ANSWER- Tanks must be level

What is the voltage found on the TT Terminals? - CORRECT ANSWER- 24v

What gauge wire is used for a T Stat? - CORRECT ANSWER- 18 Guage

Is Carbon Monoxide a desirable flue gas? - CORRECT ANSWER- Hell no!

What is the purpose of a low limit control on a steam or hot water boiler? -

CORRECT ANSWER- Maintain boiler temperature for domestic

What is electrical continuity? - CORRECT ANSWER- Complete path

What is a parallel circuit? - CORRECT ANSWER- More then one path for

electrons to flow

What is the function of a draft regulator? - CORRECT ANSWER- To maintain a

steady draft

What are the five parts of a Backarach smoke test kit? - CORRECT ANSWER-

Draft Gauge, Smoke pump, Co2 analizer, thermometer, & effiency chart. What are two reasons for a lockout on a stack switch with combustion established

? - CORRECT ANSWER- Dirty Helix or low stack temperature

What is the function of the hot contacts on a stack primary? - CORRECT

ANSWER- Power the motor

What do six terminals on a stack switch go to? - CORRECT ANSWER- 1) Hot 2)

Neutral 3) Motor 4) Transformer, TT to Thermostat

When is an oil gauge required? - CORRECT ANSWER- Any tank with a fill and

vent pipe

When are swing joints required? - CORRECT ANSWER- When ever you need

pitch

What is a power burner? - CORRECT ANSWER- Any burner other than a gravity

feed or a pressure feed

Why are low voltage t stats used more then line voltage - CORRECT ANSWER-

Main reason because low voltage ones are much safer. Also low voltage t stats are more accurate and less expensive

Is it permissible to use manually operated smoke pipe dampers - CORRECT

ANSWER- Yes, on sleeve burners only.

How is a stack switch put "in step"? - CORRECT ANSWER- Pull out clutch arm a

half inch or so and release slowly. This aligns operating contacts. Cold contacts will close and hot contacts will open.

A hot water boiler is showing 12 psi, How far will it raise the water? - CORRECT

ANSWER- 28ft

On a forced warm air system the burner and blower come on at the same time?

True? Or False? - CORRECT ANSWER- False

A storage tank more then capacity, other then an outside above ground

tank! shall be filled only through a pipe which terminates outside the building -

CORRECT ANSWER- 60 Gallons

When replacing a nozzle to get the right angle & spray pattern you should? -

CORRECT ANSWER- Replace it with manufacture specs

All hot water boilers must use what to control expansion. - CORRECT ANSWER-

Expansion tank

Before installing a new nozzle you should what? - CORRECT ANSWER- Flush out

connector line.

When hydrogen burns it creates what? - CORRECT ANSWER- Water Vapor

When using a draft gauge you must what? - CORRECT ANSWER- Zero it

After installing a new steam boiler there is oil mixed with water what do you do? -

CORRECT ANSWER- You skim the water in the boiler

Electrical energy is supplied to this device so it perform curtain functions -

CORRECT ANSWER- Load

What is the temperature ration on a thermal safety switch on an oil burner circuit

- CORRECT ANSWER- 165 degrees F

What is the first thing a tech should do when arriving at a no combustion call? -

CORRECT ANSWER- Ask how many times the customer reset the unit.

What is the best long term solution for preventing a clogged nozzle? - CORRECT

ANSWER- - Remove any underground storage tanks.

  • Install a quality oil filter.
  • Cut the suction line 10" above the tank outlet to prevent sludge.

Hot water and steam valves are interchangeable. - CORRECT ANSWER- False

When in the presence of a flame, a cad cell normally reads.. - CORRECT

ANSWER- 300 - 1000 ohms

If a pump is used to bring oil to a level higher than the tank, an oil safety valve is

required. - CORRECT ANSWER- True

On a call where a hydronic heat system is putting out too much heat on the stack,

the issue may be.. - CORRECT ANSWER- - Too much draft.

  • Not enough combustion air in the equipment room.
  • Air leakage into chamber.

A high CO2 reading is caused by.. - CORRECT ANSWER- Incomplete combustion

An often overlooked cause of a high CO2 reading is.. - CORRECT ANSWER- Not

enough combustion air in the equipment room.

The difference between an adjustable flame retention burner and a fixed flame

retention burner is? - CORRECT ANSWER- Air inlets can be adjusted

Ignitor position can be adjusted Fuel can be adjusted Oil tank design, construction, installation and testing shall be in accordance with..

- CORRECT ANSWER- 527 CMR 9.

Heat is a form of.. - CORRECT ANSWER- Energy

If a burner is operational but the circulator pump isn't running.. - CORRECT

ANSWER- The pump relay is not working correctly

A method of dealing with low viscosity/cold temps with #2 oil? - CORRECT

ANSWER- Increase pump pressure/ decrease nozzle size

What is needed at the outlet of an oil tank? - CORRECT ANSWER- Thermal safety

valve

Where do you obtain an installation permit for oil burners? - CORRECT

ANSWER- Fire Dept

How many Btu's approximately in 1 gal of #2 fuel oil? - CORRECT ANSWER-

140,000 btu's

Solid state ignition is superior to spark because - CORRECT ANSWER- It is not

affected by reduced voltage

What is an installation? - CORRECT ANSWER- The complete setting in place,

ready for operation, of an oil burner appliance together with its accessories and equipment.

How far must a power vent terminate from an opening or window? - CORRECT

ANSWER- 4'

A pump in a one pipe system that is full of air can be self purged. - CORRECT

ANSWER- False

List the minimum size of an oil supply line. - CORRECT ANSWER- 3/8"

A material with electrons so loose it allows voltage to pass with little or no

resistance.. - CORRECT ANSWER- Is a conductor

If a high limit goes off, what does a low water switch do? - CORRECT ANSWER-

Maintains water temperature

What is the maximum tank size allowed inside unenclosed? - CORRECT

ANSWER- 660 gal

What is the purpose of a delayed oil valve? - CORRECT ANSWER- Allows time for

the oil pump to get up to speed. Delays oil flow to the nozzle. On a call where a hydronic heat system is putting out too much heat, the issue

could be? - CORRECT ANSWER- A shorted out thermostat.

When measuring a cad cell with the burner running and the ff terminals jumped

out, what should the cad cell reading be? - CORRECT ANSWER- 1600 ohms

What are the possible causes of soot at or near the power venter? - CORRECT

ANSWER- Incomplete combustion

What is a possible side effect of air in a nozzle line? - CORRECT ANSWER- Soot

What is the cause if the cad cell is tripped on safety? - CORRECT ANSWER- Dirty

cad cell Faulty cad cell

No flame present

If a boiler is running but the water temperature is low? - CORRECT ANSWER-

Undersized nozzle

If a boiler is at 30 psi and the relief valve opens? - CORRECT ANSWER- Expansion

tank is undersized Tank bladder is perforated Tankless coil is leaking

Atomizing type burners were designed to burn which type of fuel? - CORRECT

ANSWER- #2 oil

One gallon of #2 fuel oil contains approximately: - CORRECT ANSWER- 140,

BTU's Pour point problems with outside above ground fuel tanks can be partially relived

by: - CORRECT ANSWER- - Relocating the outside fuel filters and strainers to the

inside

  • Switching to #1 fuel oil