How soon must a reportable spill be reported?
Which of the following is a fuel that is refined from lighter...
To measure the amount of fuel oil in a storage tank by hand, you must...
Which of the following elements must be presence before combustion can...
If you are repairing an 80ft long gas line on the ceiling in a...
What item is installed on a single-stage pump when used on a two-pipe...
How many times should you try to restart an oil burner if it does not...
What characteristic of fuel oil can cause plug burners and...
Oil strainers should be cleaned at regular intervals with steam, hot...
At ordinary atmospheric pressure, with the necessary heat of...
The most commonly used gas pressure measuring devices are the
How is the gas pressure regulator adjusted to decrease the gas...
What are used on oil burners to give air a swirling motion to provide...
Conductive greases and V-belts on a shaft pulleys are examples of...
Your first step in performing a pre-operational inspection on a gas...
What would cause a gas pressure regulator vent to leak gas?
What grades of fuel oil are used for vaporizing oil burners?
What characteristic of fuel oil indicates the minimum...
In low pressure systems, gas is usually distributed at pressures from
What is dependent upon burner and combustion chamber design?
Port type burners are classified as
What type of port as burner is limited to low temperature applications...
High-pressure gun-type nozzles are rated in gallons per
Excess air is the air that
Combustion is normally controlled
A gas service line should be installed at least how many inches below...
Which measures is being used to control static electricity, hwere the...
The conversion of fuel oil to a gaseous fuel is called
Transmission heat losses through confining walls, floors, and ceiling...
A main problem in using a thermocouple as a flame detector in a large...
In a flame rod rectification system, if a high-resistance leakage to...
In what sequence is the programmer in if the programmer timer statrs...
Which of the following areas of preventive maintenance procedures are...
What valve is used in a gas valve train to shut off the gas when you...
How are the low voltage terminals connected on a primary control, when...
What component on a gas valve train does the oil pump eliminate on an...
An irregular stack temerature on an oil burner system would be caused...
The electrical resistance of cadmium sulfide flame detectors (cad...
What test is performed to prove that the main burner can be lit by the...
When there is a long underground run of the suction line, where would...
When checking a thermocouple with a direct current (DC) millivolt...
The firing rate of small combination burners may be
What positions are the oil valves when starting up an oil burner?
Oil failure would caused by a/an
Temperature at the rectifying photocell must remain under
What type of gas burner delivers the gas into the combustion chamber...
Which of the following valves controls the amount of fuel entering the...
The DC voltmeter used for testing and troubleshooting flame safeguard...
What type of pilot is automatically turned on each time there is...
For proportional air inspiration at high mixture pressures, what...
Which of the following are the characteristic parts of a rotary oil...
What type of flame detector has a sensing tube that consists of two...
What is the normal operating resistance range of a cad cell used with...
Which draft test are you performing when the draft tube is being...
What is the average heating value of natural gas per cubic feet?
The spark outlet of the solid-state spark reignition system is...
How many volts should be read on the voltmeter, when checking the...
When soot insulates the boiler surfaces and prevents proper absorption...
When the tube of an ultraviolet (UV) flame detector conducts (fires),...
Which of the following are considered the two sources of air for...
The shape of the flame can be altered from short and bushy to long and...
The absorption-type analyzer, consists of a container that holds a...
What is known as the index of the heat which is not absorbed by the...
On gas fired equipment a gas-air flow ratio should be adjusted to...
Air is brought in for combustion for a wick type vaporizing burner by
What steps can be taken to provide a stronger pilot flame on a flame...
Three types of automatic gas valves are
When the firing rate of an ultraviolet (UV) flame detector reaches a...
When performing an ignition spark response on an ultraviolet (UV)...
How long can the lead of the flame rectification system be?
On a call for heat, what relay closes to start the heating system in a...
On a call for heat, the external burner controller contacts close,...
How far from the bottom of the fuel tanks should the suction line end?
When a return line rises from the burner, it is well advise to provide...
What is used to sample the gas pressure and open an electrical circuit...
When checking the scanners view of the main flame, at what dial...
What type of reading would you get during prepurge and before pilot is...
When the boiler flue passages are clogged with soot because of...
When starting up a gas burner, what action is taken once you light and...
The requirements for a flame rod are a stable flame, adequate...
What limits the maximum firing rate on a gas burner?
What determines the pattern of the oil spray that is used for a given...
What characteristic is used to operate the rod detection system?
In a combinantion gas valve, where does the regulator senses variation...
The primary air supply on a horizontal rotary burner makes up what...
What type of controls are used to prove that the conditions for...
In gas burners what is known as the principal reason for inefficient...
The distance from the nozzle to the end of the blast tube should never...
What is known as the ratio of the ultimate carbon dioxide (CO2)...
What interlock proves that the damper is closed or only partially open...
During a visual analysis of an oil fired unit, you detect sparklers at...
A soot deposit 1/8 inch thick may increase fuel consumption by almost
What actions will occur when the amplified flame signal exceeds a give...
What component on a programmer is energizied all the time?
What percentage of chimney loss is made up by smoke?
One type of combustion test kit consists of a stack thermometer,...
Inadequate mixing of fuel and air during vaporization and burning is...
What are the two types of pilostats used for domestic gas burners?
Which test or check is the best indicator of a proper detector...
What valve is used to provide a convenient method of controlling the...