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How is safety timing checked on a stack relay switch - ✔ ✔ ✔ Correct Answer > Remove the stack relay from the duck and let it run .it should shut off in 45 seconds. What is the safety lockout time on Burner firing under 3 gallons per hour - ✔ ✔ ✔ Correct Answer > 45 seconds What control devices are found on gravity feed burners - ✔ ✔ ✔ Correct Answer > Constant level valve When is a vent pipe required - ✔ ✔ ✔ Correct Answer > When the Supply tank is larger than 10 gallons What is the time limit for submitting certificate of completion - ✔ ✔ ✔ Correct Answer > within 72 hours
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Correct Answer > Remove the stack relay from the duck and let it run .it should shut off in 45 seconds. What is the safety lockout time on Burner firing under 3 gallons
Correct Answer > Constant level valve
the Supply tank is larger than 10 gallons What is the time limit for submitting certificate of completion -
Correct Answer > Swing joints
Correct Answer > Shifting with in the tank What is the minimum distance that the burner can be from the
Correct Answer > 10 gallons or less How much outside or replacement air is needed in a confined
How much outside air or replacement air is needed in a boiler
square inch per 1000 BTUs
Answer > It keeps the heat from over shooting
Advantage of PSC Motors over conventional split phase Motors
switch
Answer > Performers smoke test to be sure you're bringing at 0 to trace of smoke If a oil pumps gears are partially impeded by rust and difficult to
of the burner motor to increase The electric force or potential similar to water pressure is -
Correct Answer > Cleaner shutdowns
faulty ignition
Answer > Line voltage and wired in series with the primary control The maximum steam pressure needed to operate a residential
What problems does an oil film on the burner fan blades
It is best to connect fuel units as a one pipe system instead of a
leads to longer filter life and eliminates worries about leaking return lines To change the air ratio for different firing rates with an
the position of the drawer assembly in the air tube Dirt & Lint built up in the bevel of the burner fan blades will -
Answer > The water vapor in the flue gases will condense
defective pressure regulating valve. air in The Nozzle line. oil expansion in the nozzle line after shutdown.
Answer > The amount of excess air in the combustion gases
Answer > 100 psi The hole in the flue pipe for combustion testing should be -
unit as possible When using a pump type smoke tester 10 strokes are necessary
tester paper. clear tester air .draw the proper amount of fuel gas threw the paper.
Correct Answer > Stack temperature smoke test and excess of air
combustion products through the heat exchanger and out of the building Excessive draft drop through the heat exchanger indicates -
heat exchanger
Correct Answer > Fuel pump pressure To burn 1 pound of fuel oil it takes how many pounds of air -
In a forced warm air system the return air duct size should
Answer > 80% In a burner that has been properly set up and adjusted it will experience and occasional hard start of puff back the problem
Transformer Power ventors that are installed inside of a structure should be
- ✔✔✔ Correct Answer > Mounted as close to the outside wall as possible when the installation instructions call for a draft regulator with
Answer > Between the boiler or furnace and a power Venter In a blank system the radiator Supply and return pipe are
pipe monoflo
when using a blank heater it is necessary to maintain sufficient boiling water temperature to heat the domestic hot water -
One method for removing oil and dirt from a newly-installed
through the nipple at the water level after a few days of operation If I cadcell is seeing light when a thermostat conneted to the
The primary control will not energize Increasing the air intake in order to achieve a cleaner fire will
temperature A single stationary conductor in the flux of a permanent
Answer > The high static pressure enables boilers and furnaces with tighter more efficient heat exchanger passages
> The capacitor the auxiliary windings and the mainliners remain in circuit while the motor is running why would the burner on a furnace short cycle off the high limit
What happens when you decrease the amount of excess air -
increases efficiency
Answer > To match the boiler or furnace output to the heat load of the building to reduce off-cycle losses from oversizing to reduce cycling losses and increase run times The cross connection between two supply tanks shall not
Correct Answer > When the equipment is designed to control the draft.
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,
available for safe operation of all connected equipment.
Weak ignition transformer
Answer > The manufacturers recommended nozzle spray pattern and spray angle.
> Decreasing the nozzle size and increasing the pump pressure accordingly
Correct Answer > 100psi
If a steam boiler is to be installed with an automatic feeder it
device How can a damaged heat exchanger be detected on a forced
candle If a high limit is installed to prevent high boiler water
Correct Answer > To maintain temperature for domestic hot water On a steam system, a plugged siphon loop can have what affect
heat in the living space On a triple acting aquastat a minimum of 20 degrees is recommend between the high and low limit, this will prevent? -
before reaching the minimum circulator temperature
Answer > Their high static pressure enables boilers and furnaces with tighter more efficient heat exchange passages
Answer > combustion air Dirt or lint buildup in the bevel of the burner fan blades will -
The lowest temperature at which the fuel will flash but not continue to burn
lowered by blending with kerosene, can be lowered with fuel additives, and is the lowest temperature at which it will flow
Answer > 10,000 gallons
Sleeved in plastic or PVC pipe with no fittings below the floor
Correct Answer > Move oil from the tank to the burner and deliver oil at a constant regulated pressure to the nozzle
Answer > Use a hand pump to pull the blockage out If the operating vacuum reading a significantly above the
Answer > clogged oil filter If the operating vacuum reading is significantly less than the
Answer > suction line leak A cause of pulsating oil pump pressure and a pulsating fire is -
Increase the flow-rate.
Answer > Atomize the oil, provide a pattern of oil spray, and meter the amount of oil burned
manufacturer's recommendations
Correct Answer > Increase the pump pressure, install a nozzle line pre-heater, and use additives or kerosene to lower viscosity
large enough so the fire doesn't touch (impinge on) any surface, reflects heat back into the fire, and is made of material (like ceramic) that heats up quickly and cools off quickly
Answer > There are leaks between the sections of the boiler that let basement air into the heat exchanger