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P-99 2026 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
Vaporstat - correct answer-A low pressure control mounted on
the fan housing and will shut down the burner if no air or
combustion exists
Photoelectric cell - correct answer-A flame detection control
Aquastat - correct answer-Operates the oil burner in the
summer for domestic hot water needs
Low water cut off - correct answer-An automatic electric control
that will shut down the burner when the water level is below a
safe operating point
Gauge glass - correct answer-A device used to indicate the
water level of a steam boiler
P-99 2026 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
Vaporstat - correct answer-A low pressure control mounted on
the fan housing and will shut down the burner if no air or
combustion exists
Photoelectric cell - correct answer-A flame detection control
Aquastat - correct answer-Operates the oil burner in the
summer for domestic hot water needs
Low water cut off - correct answer-An automatic electric control
that will shut down the burner when the water level is below a
safe operating point
Gauge glass - correct answer-A device used to indicate the
water level of a steam boiler
