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MASSACHUSETTS OIL BURNER LICENSE NEWEST 2024
ACTUAL EXAM TEST BANK 350 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+
What is the minimum size oil line on a domestic system? - ANSWER-3/8 copper or black
maul able
Give two reasons for a high stack temperature? - ANSWER-To much air or sooted boiler
What is the greatest loss in a boiler? - ANSWER-Heat loss
How much air is needed in a confined space? - ANSWER-50 cubic feet per 1,000 BTU's
What is the max voltage of a burner circuit ? - ANSWER-150v
What is electrical continuity? - ANSWER-Complete path
What is a parallel circuit ? - ANSWER-More then one path for electrons to flow
What is the function of a draft regulator ? - ANSWER-To maintain a steady draft
What are the five parts of a Backarach smoke test kit? - ANSWER-Draft Gauge, Smoke pump,
Co2 analizer, thermometer, & effiency chart.
What are two reasons for a lockout on a stack switch with combustion established ? -
ANSWER-Dirty Helix or low stack temperature
What is the function of the hot contacts on a stack primary ? - ANSWER-Power the motor
What do six terminals on a stack switch go to? - ANSWER-1) Hot 2) Neutral 3) Motor 4)
Transformer, TT to Thermostat
When is an oil gauge required? - ANSWER-Any tank with a fill and vent pipe
When are swing joints required? - ANSWER-When ever you need pitch
What is a power burner? - ANSWER-Any burner other than a gravity feed or a pressure feed
Why are low voltage t stats used more then line voltage - ANSWER-Main reason because low
voltage ones are much safer. Also low voltage t stats are more accurate and less expensive
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Is it permissible to use manually operated smoke pipe dampers - ANSWER-Yes, on sleeve
burners only.
How is a stack switch put "in step" ? - 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? - ANSWER-28ft
What would you use in case a suction line to a burner developed oil leaks & to maintain
pressure to the burner? - ANSWER-OSV
Carbon monoxide is a result of what? - ANSWER-Incomplete combustion
A high limit operates be sensing what in a hot water boiler? - ANSWER-Temperature
Modern equipment employs the use of power vents, What makes this possible ? - ANSWER-
Pre Purge- Post purge controls
When replacing a nozzle to get the right angle & spray pattern you should? - ANSWER-
Replace it with manufacture specs
All hot water boilers must use what to control expansion. - ANSWER-Expansion tank
Before installing a new nozzle you should what? - ANSWER-Flush out connector line.
When hydrogen burns it creates what? - ANSWER-Water Vapor
When using a draft gauge you must what? - ANSWER-Zero it
After installing a new steam boiler there is oil mixed with water what do you do? - ANSWER-
You skim the water in the boiler
Electrical energy is supplied to this device so it perform curtain functions - ANSWER-Load
What is the temperature ration on a thermal safety switch on an oil burner circuit -
ANSWER-165 degrees F
On a forced warm air system the burner and blower come on at the same time ? True? Or
False? - ANSWER-False
What are the 3 funtions of an Oil Burner nozzle? - ANSWER-Atomize, Meter, Patter.
What are the 2 voltage circuits of a primary control? - ANSWER-Line & Low.
What is the function of a fuse? - ANSWER-Protect circuit.
What is the High Limit cut out? - ANSWER-Max safe Temp or Pressure setting.
MASSACHUSETTS OIL BURNER LICENSE NEWEST 2024
ACTUAL EXAM TEST BANK 350 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+
What is the minimum size oil line on a domestic system? - ANSWER-3/8 copper or black
maul able
Give two reasons for a high stack temperature? - ANSWER-To much air or sooted boiler
What is the greatest loss in a boiler? - ANSWER-Heat loss
How much air is needed in a confined space? - ANSWER-50 cubic feet per 1,000 BTU's
What is the max voltage of a burner circuit ? - ANSWER-150v
What is electrical continuity? - ANSWER-Complete path
What is a parallel circuit ? - ANSWER-More then one path for electrons to flow
What is the function of a draft regulator ? - ANSWER-To maintain a steady draft
What are the five parts of a Backarach smoke test kit? - ANSWER-Draft Gauge, Smoke pump,
Co2 analizer, thermometer, & effiency chart.
What are two reasons for a lockout on a stack switch with combustion established ? -
ANSWER-Dirty Helix or low stack temperature
What is the function of the hot contacts on a stack primary ? - ANSWER-Power the motor
What do six terminals on a stack switch go to? - ANSWER-1) Hot 2) Neutral 3) Motor 4)
Transformer, TT to Thermostat
When is an oil gauge required? - ANSWER-Any tank with a fill and vent pipe
When are swing joints required? - ANSWER-When ever you need pitch
What is a power burner? - ANSWER-Any burner other than a gravity feed or a pressure feed
Why are low voltage t stats used more then line voltage - ANSWER-Main reason because low
voltage ones are much safer. Also low voltage t stats are more accurate and less expensive
, 2|Page
Is it permissible to use manually operated smoke pipe dampers - ANSWER-Yes, on sleeve
burners only.
How is a stack switch put "in step" ? - 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? - ANSWER-28ft
What would you use in case a suction line to a burner developed oil leaks & to maintain
pressure to the burner? - ANSWER-OSV
Carbon monoxide is a result of what? - ANSWER-Incomplete combustion
A high limit operates be sensing what in a hot water boiler? - ANSWER-Temperature
Modern equipment employs the use of power vents, What makes this possible ? - ANSWER-
Pre Purge- Post purge controls
When replacing a nozzle to get the right angle & spray pattern you should? - ANSWER-
Replace it with manufacture specs
All hot water boilers must use what to control expansion. - ANSWER-Expansion tank
Before installing a new nozzle you should what? - ANSWER-Flush out connector line.
When hydrogen burns it creates what? - ANSWER-Water Vapor
When using a draft gauge you must what? - ANSWER-Zero it
After installing a new steam boiler there is oil mixed with water what do you do? - ANSWER-
You skim the water in the boiler
Electrical energy is supplied to this device so it perform curtain functions - ANSWER-Load
What is the temperature ration on a thermal safety switch on an oil burner circuit -
ANSWER-165 degrees F
On a forced warm air system the burner and blower come on at the same time ? True? Or
False? - ANSWER-False
What are the 3 funtions of an Oil Burner nozzle? - ANSWER-Atomize, Meter, Patter.
What are the 2 voltage circuits of a primary control? - ANSWER-Line & Low.
What is the function of a fuse? - ANSWER-Protect circuit.
What is the High Limit cut out? - ANSWER-Max safe Temp or Pressure setting.
