Questions and Answers (2026) |
Verified Examination Questions and
Answers | Graded A+
‣ When is an automatic draft control not required? -✓✓When the
equipment is designed to control the draft.
‣ Combustion performance testing can indicate: -✓✓Improper air oil
mixture, too much combustion air, and low pump pressure.
‣ If a second oil-burning appliance is installed in a single chimney, you
must insure: -✓✓Sufficient draft is available for safe operation of all
connected equipment.
‣ Delayed ignition can be caused by: -✓✓Weak ignition transformer
‣ You should replace the oil burner nozzle with: -✓✓The manufacturers
recommended nozzle spray pattern and spray angle.
‣ Viscosity problems can be corrected by: -✓✓Decreasing the nozzle
size and increasing the pump pressure accordingly
, ‣ The minimum operating pressure of an oil pump is: -✓✓100 PSI
‣ If a stack relay fails you, must? -✓✓Replace it with an approved type
controller
‣ Aquastats are normally found on what type of heating systems? -
✓✓Hydronic
‣ Airstats are found on what type of heating systems? -✓✓Forced warm
air systems
‣ Under sized returns on a warm air system can result in what? -
✓✓Short cycling of the oil burner
‣ Incorrect nozzle selection in regards to gallon per hour, can result in
what problems in a steam system? -✓✓Some radiators not heating
quickly enough
‣ Low boiler water temperature in a hydronic hot water system may be
caused by? -✓✓Undersized oil burner nozzles
‣ Delayed opening oil valves are used to? -✓✓Allow oil pump to come
up to speed